Drone/UAS Practice Group 35 E Wacker Drive

Suite 1875

Chicago, IL 60601

Tel: 312-201-8310

Fax: 888-211-8624

 Jeffrey@Antonelli-Law.com

U.S. Department of Transportation April 23, 2015

Docket Management System

1200 New Jersey Ave S.E. 

Washington, D.C. 20590

Re: Request for Exemption under Section 333 of the FAA Modernization and Reform Act of 2012 

and Part 11 of the Federal Aviation Regulations from Certain Provisions of 14 C.F.R.

Dear Sir or Madam:

Pursuant to Section 333 of the FAA Modernization and Reform Act of 2012 (the Reform 

Act) and 14 C.F.R. Part 11, Antonelli Law files this petition for exemption on behalf of UA 

TacSolutions, LLC (“TacSolutions”). TacSolutions sells, services and inspects Small Unmanned 

Aircraft Systems (“UAs”). It seeks an exemption from the Federal Aviation Regulations (“FARs”) 

listed in Appendix A to allow commercial operation of its UAs, so long as such operations are 

conducted within and under the conditions outlined herein or as may be established by the FAA in 

a grant of this petition. The commercial operations will be for purposes of conducting 

TacSolutions’ UA sales and maintenance business, including but not limited to, demonstrating the 

capabilities of the UA to potential customers, and test flying customers’ UA after TacSolutions 

performs servicing or inspection operations on the UA.

Approval of the exemption for petitioner will allow commercial operation of (1) the 

Aerialtronics Altura Zenith ATX8 and (2) the CyberQuad Maxi in Class G airspace nationwide

unless otherwise prescribed by an Air Traffic Organization (ATO) issued COA. The UAs covered 

by this petition are small battery-powered craft, with the Aerialtronics Altura Zenith ATX8

weighing approximately 18.7 lbs. (8.5 kg.) and the CyberQuad Maxi weighing approximately 17.6

lbs. (8 kg.), inclusive of battery and payload. The Aerialtronics Altura Zenith ATX8 has previously 

been approved for commercial operations in Exemption Nos. 11175, 11188, and 11237. Operation 

of the UA under the strict conditions proposed below will provide an equivalent level of safety, as 

Congress intended, while still allowing commercial operations. Operations using these UAs are 

far safer than conventional operations conducted with helicopters and fixed-wing aircraft that 

weigh thousands of pounds, carry highly flammable fuel, and operate in close proximity to the 

ground, trees, infrastructure, and people. 

Congress directed the FAA to consider seven factors in deciding whether to approve

Section 333 exemption petitions - size, weight, speed, operational capability, proximity to airports, 

proximity to populated areas, and operation within visual line of sight. In this case, each factor 

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Table of Contents

I. Publishable Summary.............................................................................................................. 5

II. Petitioner’s Contact Information ............................................................................................. 5

III. Proposed Operations................................................................................................................ 6

A. The UAs ......................................................................................................................... 6

B. The Crew ........................................................................................................................ 7

C. Flight Conditions............................................................................................................ 7

D. Flight Operations............................................................................................................ 8

IV. Aircraft and Equivalent Level of Safety.................................................................................. 9

V. Proposed Conditions of the Exemption................................................................................... 9

VI. Privacy................................................................................................................................... 12

VII. Public Interest and Safety...................................................................................................... 13

VIII. Regulations from Which Exemption is Requested .............................................................. 14

A. Appendix A .................................................................................................................. 14

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Exhibit List

Exhibits pertaining to the Aerialtronics Altura Zenith ATX8 and the CyberQuad Maxi

Exhibit 1: UA TacSolutions LLC Safety Manual...................Submitted confidentially to the FAA

Exhibit 2: UA TacSolutions, LLC Operations Manual .........Submitted confidentially to the FAA

Exhibit 3: MikroKopter Flight Controller User Manual.........Submitted confidentially to the FAA

Exhibit 4: MikroKopter GPS User Manual ............................Submitted confidentially to the FAA

Exhibit 5: Graupner GR-24 HoTT 2.4 GHz Receiver System User Manual................................ 17

Exhibit 6: Flight Log Booklet.................................................Submitted confidentially to the FAA

Exhibit 7: PIC Training Syllabus............................................Submitted confidentially to the FAA

Exhibits pertaining only to the Aerialtronics Altura Zenith ATX8

Exhibit 8: Altura Zenith Aircraft System – Aerialtronics............................................................. 28

Exhibit 9: How to remote control the Altura Zenith – Aerialtronics............................................ 38

Exhibit 10: High performance unmanned aircraft systems – Aerialtronics.................................. 47

Exhibit 11: Graupner MX-20 Transmitter Programming Manual....................................................

.................................................................................Submitted separately due to upload constraints

Exhibits pertaining only to the CyberQuad Maxi

Exhibit 12: CyberQuad Flight Manual ...................................Submitted confidentially to the FAA

Exhibit 13: CyberQuad Maxi UAV Portfolio............................................................................... 51

Exhibit 14: Graupner MC-20 Transmitter Programming Manual ...................................................

.................................................................................Submitted separately due to upload constraints

Exhibit 15: Graupner MC-20 Transmitter User Manual............................................................... 53

Exhibits 1-4, 6-7, and 12 have been submitted confidentially to the FAA and are not 

available to the public.

Exhibits 11 and 14 have been uploaded separately due to file size constraints.

4
I. Publishable Summary

Pursuant to 14 C.F.R. §11, the following summary is provided for publication in the 

Federal Register, should it be determined that publication is needed:

Petitioner seeks an exemption from the following rules: 

14 C.F.R 21(h); 14 C.F.R. 43.7; 14 C.F.R. 43.11; 14 C.F.R. 45.11; 14 C.F.R. 45.27; 14 

C.F.R. 45.29; 14 C.F.R. 91.7(a); 14 C.F.R. 91.9(b)(2); 14 C.F.R. 91.9(c); 14 C.F.R. 

91.103(b)(2); 14 C.F.R. 91.105; 14 C.F.R. 91.109; 14 C.F.R. 91.113(b); 14 C.F.R. 

91.119(b) and (c); 14 C.F.R. 91.121; 14 C.F.R. 91.151(a); 14 C.F.R. 91.203(a) and (b); 

14 C.F.R. 91.215; 14 C.F.R. 91.403; 14 C.F.R. 91.405(a); 14 C.F.R. 91.407(a)(1); 14 

C.F.R. 409(a)(1) and (2); and 14 C.F.R. 91.417(a) and (b) to operate commercially a 

small unmanned aircraft system (UA) (19lbs or less).

Approval of the exemption requested by petitioner will allow commercial operation of 

the Aerialtronics Zenith ATX8 and the CyberQuad Maxi in Class G airspace 

nationwide. The commercial operations will be for purposes of conducting petitioner’s 

UA sales and maintenance and training business, including but not limited to, 

demonstrating the capabilities of the UAs to potential customers, and test flying 

customers’ UAs after petitioner performs servicing or inspection operations on the UA. 

The requested exemption should be granted because operation of small UAs, with the

Aerialtronics Altura Zenith ATX8 weighing approximately 18.7 lbs. (8.5 kg.) and the 

CyberQuad Maxi weighing approximately 17.6 lbs. (8 kg.), inclusive of battery and 

payload, conducted in the strict conditions outlined below, will provide an equivalent 

level of safety, while still allowing commercial operations. The seven factors Congress 

directed the FAA to consider when approving Section 333 exemption petitions - size, 

weight, speed, operational capability, proximity to airports, proximity to populated 

areas, and operation within visual line of sight – each support the request. In particular, 

the aircraft are small, and will operate at slow speeds, and close to the ground. The 

substantial increase of safety and decrease of risk to human life, coupled with the low 

risk use of UAs to conduct these operations, weigh heavily in favor of granting the 

exemption.

II. Petitioner’s Contact Information

Michael Farchie

President

UA TacSolutions, LLC

3751 Main Street #600-145

The Colony, TX 75056

Counsel for Petitioner:

Antonelli Law

35 E Wacker Drive

Suite 1875

Chicago, IL 60601

Tel: 312-201-8310

Fax: 888-211-8624

5
Email: jeffrey@antonelli-law.com

III. Proposed Operations

A. The UAs

The requested exemption will permit petitioner to operate (1) the Aerialtronics Altura 

Zenith ATX8 and (2) the CyberQuad Maxi.

This petition, along with Exhibits 1-6 and 11-14, which include the supporting 

documentation of the UAs, are hereinafter referred to as the “operating documents.” The specific 

conditions of the proposed exemption that relate to the characteristics of the UAs are numbers 1, 

5, and 16-20 in Section V below. Each has been adopted or imposed by the FAA in numerous 

previous grants of Section 333 exemption petitions. 

1. Aerialtronics Altura Zenith ATX8

The requested exemption will permit petitioner to operate the Aerialtronics Zenith ATX8, 

with a maximum weight of approximately 18.7 lbs. (8.5 kg), inclusive of batteries and technical 

payload. This rotorcraft operates at a speed of no more than 19.4 knots and has the capability to 

hover and move in the vertical and horizontal planes simultaneously. 

This UA will have the following specifications or equivalent:

Airframe: Aerialtronics Altura Zenith ATX8

Control System: MikroKopter based controller, which includes the navigation system and GPS 

unit.

Transmitter (Tx): Graupner MX-20

Receiver (Rx): Graupner HoTT GR-24

Motors: eight MT 4008-12 electric brushless motors

Propellers: 16” x 4 MN APC Tractor; 16” x 4 MN APC Pusher

Data link: xBee 868 MHZ

Video Link: AT-Video 5.8 GHZ

OSD: available on a dedicated mobile device, allowing live telemetry to be displayed, including 

the battery level and altitude.

Gimbal: AV series 2-axis

Batteries: Lithium polymer batteries with capacity of 16,600 mAh

For more information regarding this UA, its transmitter, and receiver, please refer to 

Exhibit 2, Part B and Appendix E; and Exhibits 3-5 and 8-11. The FAA has previously approved 

commercial operations of the Aerialtronics Altura Zenith ATX8 in Exemption Nos. 11175, 11188, 

and 11237.

2. CyberQuad Maxi

The requested exemption will also permit petitioner to operate the CyberQuad Maxi, with a 

maximum weight of 17.6 lbs. (8 kg.), inclusive of batteries and technical payload. This operates at 

a speed of no more than 33 knots and has the capability to hover and move in the vertical and 

horizontal planes simultaneously.

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The UA will have the following specifications or equivalent:

Airframe: CyberQuad Maxi

Control System: MikroKopter based control system, which includes the navigation system and 

GPS unit.

Tx: Graupner MC-20

Rx: Graupner HoTT GR-24

Motors: four custom designed CyberTechnology motors

Propellers: 10” x 4

Data Link: internal to the Graupner HoTT 2.4GHz receiver system

Video Link: 5.8 GHz 

OSD: integrated into the Tx, allowing live telemetry to be displayed to the PIC, including the 

battery level and altitude

Batteries: 4.5 Ah 4S Lithium polymer batteries

For more information regarding the CyberQuad Maxi, its transmitter and receiver, please 

refer to Exhibits 3-5 and 12-15.

B. The Crew

The crew will consist of a pilot in command (PIC) and a visual observer (VO). The PIC 

and VO will have been trained in operation of UAs generally and received up-to-date information 

on the UAs to be operated pursuant to this grant.

The PIC will have, at minimum, a sport pilot’s license and a third class medical certificate

or U.S. driver’s license. The PIC and VO will have received additional training as described in:

Exhibit 1, Section 5: Safety Training;

Exhibit 2, Part A, Section 5: Qualification Requirements; and

Exhibit 7, PIC Training Syllabus.

The specific conditions of the proposed exemption that relate to the training and 

characteristics of the crew are numbers 3 and 6-9 in Section V below. Each has been adopted or 

imposed by the FAA in numerous previous grants of Section 333 exemption petitions. 

C. Flight Conditions

The UA operations will involve sales demonstrations and testing after servicing or 

inspection of customer-owned products and will take place in Class G airspace (unless as 

prescribed by an ATO-issued COA) under 400 feet above ground level (“AGL”) and under 

controlled conditions over property that is restricted as set out in Exhibit 2, Section 8.2: Ground 

handling instructions. Petitioner will work with the local FSDO when planning operations. 

Petitioner will only operate its UA in visual meteorological conditions (VMC). The UA will at all 

times be no less than 500 feet below and no less than 2,000 feet horizontally from a cloud, and 

petitioner will not conduct operations unless visibility is at least 3 statute miles from the PIC. The

flight crew will always make a safety assessment of the risk of every operation, and will only 

operate when it is determined that no undue hazards are present.

Please refer to the following operating documents for more information about the flight 

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conditions:

Exhibit 2, Part A:

Section 8.1.2: Weather minima

Section 8.3.1: Adverse and potentially hazardous weather conditions

Section 8.4: All weather conditions

Section 8.8: VFR flight rules

Section 8.9: Flight planning

Exhibit 12:

Section 4.6: Weather and environment

The specific conditions of the proposed exemption that relate to the flight conditions in 

which the UA will be operated are numbers 2, 4, 16, and 26-27 in Section V below. Each has been 

adopted or imposed by the FAA in numerous previous grants of Section 333 exemption petitions.

D. Flight Operations

The purpose of every UA flight will be to conduct either sales demonstrations or testing of 

a specific customer’s UA after inspections or servicing, and to do so in an efficient and safe 

manner.

Every UA flight will use at minimum a two person flight crew: a PIC and a VO. The 

standard operational procedures that they will follow are set out in the operating documents, 

specifically Exhibits 1-2 and 12. Please refer to the following sections for information pertaining 

to operations:

Exhibit 1

Section 2.4: Incident management and investigation

Section 3: Risk management

Exhibit 2, Part A:

Section 7: Flight time limitations

Section 7.1: Maintenance

Section 8: Operating procedures

Section 11: Handling, notifying and reporting occurrences

For information specifically pertaining to the Aerialtronics Altura Zenith ATX8, please 

refer to the following exhibits:

Exhibit 2, Part B

Section 2: Normal Procedures

Section 3: Abnormal and Emergency Procedures

Exhibit 2, Appendix F: Checklists

For information specifically pertaining to the CyberQuad Maxi, please refer to the 

following exhibits:

Exhibit 12

Section 5: Flight Theory and Operation

Section 7: Daily Inspection

Section 8: Pre-Flight Procedure

Section 9: Post-Flight Procedures

The CyberQuad Maxi will have the same “loss of control link” capability and operating 

8
procedure as the Aerialtronics Altura Zenith ATX8. See Exhibit 2, Section 3.1: Emergency 

Procedures Description.

The specific conditions of the proposed exemption that relate to flight operations are 

numbers 11-12, 17-25, and 30-34 in Section V below. Each has been accepted or imposed by the 

FAA in numerous previous grants of Section 333 exemption petitions.

IV. Aircraft and Equivalent Level of Safety

Petitioner proposes that the exemption apply to UAs that have the characteristics and that 

operate with the limitations proposed herein. These limitations provide for a level of safety at least 

equivalent to or higher than manned aircraft operations under the current regulatory structure. 

Section V below identifies the limitations and conditions to which petitioner agrees to be bound 

when conducting commercial operations under a grant of this petition. Appendix A contains a 

matrix connecting (i) the specific proposed condition with (ii) the FAR provision for which it 

provides an equivalent level of safety and (iii) one or more recent Section 333 exemption grants 

in which the FAA recognized this equivalent level of safety.

Approval of the commercial operations outlined in this petition presents no national security 

issue. The PIC will possess, at minimum, a sport pilot’s certificate, so he or she will have been 

subject to security screenings by the Department of Homeland Security.

V. Proposed Conditions of the Exemption

1. The UAs will weigh no more than (a) 18.7 lbs. (8.5 kg.) (Aerialtronics Altura Zenith ATX8) 

and (b) 17.6 lbs. (8 kg.) (CyberQuad Maxi), inclusive of battery and technical payload.

2. UA operations under this exemption will be limited to conducting operations for the purpose 

of sales demonstrations or testing in Class G airspace nationwide, unless otherwise prescribed 

by an ATO issued COA.

3. Flights will be operated within line of sight of a pilot and visual observer.

4. Flights will be operated at an altitude of no more than 400 feet AGL, as indicated by the 

procedures specified in the operating documents. All altitudes reported to ATC must be in feet 

AGL.

5. The UA will not be flown at an indicated airspeed exceeding 19.4 knots (Aerialtronics Altura 

Zenith ATX8) and 32.4 knots (CyberQuad Maxi).

6. Minimum flight crew for each operation will consist of the UA pilot in command (PIC) and a 

visual observer (VO).

7. The PIC will have, at minimum, a sport pilot license and a third class medical certificate or a 

U.S. driver’s license.

8. The petitioner will not permit any PIC to operate unless the PIC meets its qualification criteria 

and demonstrates the ability to safely operate the UA in a manner consistent with how the UA 

will be operated under this exemption, including evasive and emergency maneuvers and 

9
maintaining appropriate distances from persons, vessels, vehicles and structures. PIC 

qualification flight hours and currency will be logged in a manner consistent with 14 CFR § 

61.51(b). A record of the PIC training will be documented and made available upon request by 

the Administrator. Training operations will only be conducted during dedicated training 

sessions. During training, proficiency, and experience-building flights, all persons not essential 

for flight operations will be considered nonparticipants, and the PIC will operate the UA with 

appropriate distance from nonparticipants in accordance with 14 CFR § 91.119. 

9. The VO will not perform any other duties beyond assisting the PIC with seeing and avoiding 

other air traffic and other ground based obstacles/obstructions, and will not be permitted to 

operate the camera or other instruments.

10. The PIC will be designated before the flight and will not be allowed to transfer his or her 

designation for the duration of the flight. The PIC will ensure that the VO can perform the 

functions prescribed in these conditions and the operating documents.

11. A briefing will be conducted in regard to the planned UA operations prior to each day’s 

activities. It will be mandatory that all personnel who will be performing duties in connection 

with the operations be present for this briefing. 

12. Prior to each flight, the PIC will inspect the UA, including the Ground Control Station, to 

ensure it is in a condition for safe flight. If the inspection reveals a condition that affects the 

safe operation of the UA, the PIC will not operate the UA until the necessary maintenance has 

been performed and the UA is found to be in a condition for safe flight. All maintenance and 

alterations will be properly documented in the aircraft records.

13. Petitioner will conduct a functional flight test on any UA that has undergone maintenance or 

alterations that affect the UA operation or flight characteristics, e.g. replacement of a flight 

critical component. The PIC who conducts the functional test flight will make an entry in the 

aircraft records. 

14. The petitioner will carry out its maintenance, inspections, and record keeping requirements, in 

accordance with the UA manufacturer’s aircraft/component, maintenance, overhaul, 

replacement, inspection, and life limit requirements set forth in the operating documents. 

Maintenance, inspection, alterations, and status of replacement/overhaul component parts will 

be noted in the aircraft records, including total time in service, description of work 

accomplished, and the signature of the authorized person returning the UA to service. The 

authorized person will make an entry in the aircraft record of the corrective action taken against 

discrepancies discovered between inspections.

15. The UA will be operated within visual line of sight (VLOS) of the PIC and VO at all times. 

This requires the PIC to be able to use human vision unaided by any device other than 

corrective lenses. PIC and VO will at all times be able to communicate verbally. They will not 

be permitted to use electronic messaging or texting to communicate during flight operations. 

16. The PIC will not begin a flight unless (considering wind and forecast weather conditions) there 

is enough power to fly at normal cruising speed to the intended landing point and prepare to 

land with 25% battery power remaining.

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17. Actual total flight time for each operational flight will result in no less than a 25% battery 

reserve.

18. The UA will have the capability to abort a flight in case of unexpected obstacles or 

emergencies. 

19. The UA will be programmed so that if it loses communications or loses its GPS signal, it will 

return to a pre-determined location within the planned operating area and land or be recovered 

in accordance with the operating documents

20. If the UA and its radio control link disconnect during flight, the system’s failsafe protection 

will be triggered and the multirotor will return to home and land automatically, rather than 

flying off uncontrollably or landing at an unknown location. 

21. The operating documents required under 14 CFR §§ 91.9 and 91.203 will be maintained and 

available to the PIC at the Ground Control Station of the UA any time the UA is operating. 

These documents will be made available to the Administrator or any law enforcement official 

upon request. If a discrepancy exists between the conditions and limitations in the exemption 

grant and the procedures outlined in the operating documents, the grant conditions and 

limitations will take precedence and will be followed. Otherwise, the petitioner will follow the 

procedures outlined in its operating documents. If it updates or revises its operating documents, 

it will present updated and revised documents to the Administrator upon request. If the 

petitioner determines that any update or revision would affect the basis upon which the FAA 

granted the exemption, then the Petitioner will petition for an amendment to the grant of 

exemption. 

22. Petitioner will obtain written and/or oral permission from the landowners/authorized agents of 

the landowners over which flights will be conducted.

23. Petitioner will obtain all required permissions and permits from territorial, state, county or city 

jurisdictions, including local law enforcement, fire, or other appropriate governmental 

agencies. 

24. UA operations will not be conducted during night, as defined in 14 CFR § 1.1. All operations 

will be conducted under visual meteorological conditions (VMC). Flights will not be 

conducted under special visual flight rules (SVFR). 

25. The petitioner will obtain an Air Traffic Organization (ATO) issued Certificate of Waiver or 

Authorization (COA) prior to conducting any operations under the grant of exemption. 

Petitioner will request a Notice to Airman (NOTAM) not more than 72 hours in advance, but 

not less than 48 hours prior to the operation. All operations will be conducted in accordance 

with airspace requirements in the ATO issued COA, including class of airspace, altitude level 

and potential transponder requirements. 

26. The UA will not be operated within 5 nautical miles of an airport reference point as denoted 

on a current FAA-published aeronautical chart unless a letter of agreement with that airport’s 

management has been obtained, and the operation is conducted in accordance with a NOTAM 

as required by the operator’s COA. Any letter of agreement with the airport management will 

be made available to the Administrator upon request. 

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27. The UA will not be operated less than 500 feet below, or less than 2,000 feet horizontally from, 

a cloud or when visibility is less than 3 statute miles from the PIC. 

28. All operations shall be conducted in Class G airspace or as otherwise prescribed in an ATO

issued COA. 

29. All aircraft operated in accordance with this exemption will be identified by serial number, 

registered in accordance with 14 CFR part 47, and have identification (N-Number) markings 

in accordance with 14 CFR part 45, Subpart C. Markings will be as large as practicable. 

30. Before conducting operations, petitioner will ensure that the radio frequency spectrum used 

for operation and control of the UA complies with the Federal Communications Commission 

(FCC) or other appropriate government oversight agency requirements. 

31. The UA will remain clear and yield the right of way to all manned aviation operations and 

activities at all times. 

32. The UA will not be operated by the PIC from any moving device or vehicle. 

33. Petitioner will conduct all flight operations at least 200 feet from all nonparticipating persons, 

vessels, vehicles, and structures unless one of the following three conditions is met:

a. Barriers or structures are present that sufficiently protect nonparticipating persons from the 

UA and/or debris in the event of an accident. The petitioner will ensure that 

nonparticipating persons remain under such protection. If a situation arises where 

nonparticipating persons leave such protection and are within 500 feet of the UA, the PIC 

will ensure that flight operations cease immediately. 

b. The aircraft is operated near vessels, vehicles or structures where the owner/controller of 

such vessels, vehicles or structures has granted permission and the PIC has made a safety 

assessment of the risk of operating closer to those objects and determined that it does not 

present an undue hazard.

c. Operations nearer to the PIC, VO, operator trainees or essential persons do not present an 

undue hazard to those persons per § 91.119(a).

34. Petitioner will report any incident, accident, or flight operation that transgresses the lateral or 

vertical boundaries of the operational area as defined by the applicable COA to the FAA's UAS 

Integration Office (AFS-80) within 24 hours. Petitioner will report accidents to the National 

Transportation Safety Board (NTSB) per instructions contained on the NTSB Web site: 

www.ntsb.gov.

VI. Privacy

There is little concern that the proposed flights will cause invasions of privacy because all 

flights will occur over private property. When a UA is being flown, the onboard cameras will be 

focused on the ground beneath it, and thus turned so as to be facing away from any occupied 

structures that may be in the area to minimize inadvertent video or still images of uninvolved 

12
persons. 

All data collected will be for private use only and will not be distributed through public 

channels. If such data is later made available for public view, all images containing uninvolved 

persons will be blurred or blacked-out. No attempt will be made to identify any individuals filmed 

during the flights except in cases where they are trespassing upon or damaging customer property, 

or interfering with the petitioner’s or its customers’ operations.

VII. Public Interest and Safety

The planned UA use will increase ground safety for users of the Aerialtronics Altura Zenith 

AT8X and the CyberQuad Maxi by ensuring that the individuals who sell, conduct maintenance 

on, and train future users these systems are experienced on the systems, are qualified technicians, 

and knowledgeable trainers.

There are myriad uses for UAs such as the Aerialtronics Altura Zenith AT8X and 

CyberQuad Maxi. Both UAs can be used for precision agriculture, asset management, including 

wind turbine and power line inspections, law enforcement, and mapping and surveying operations. 

However, they are expensive and powerful pieces of equipment. Purchasers will want to work with 

experienced and qualified dealers, such as petitioner, when researching and purchasing these 

systems. Commercial operators of these UA systems will need a support team, such as the 

petitioner’s, in order to ensure that their operations continue to be safe. Having experienced and 

qualified sales, maintenance, and training programs in the United States is in the public interest.

Petitioner has devoted significant time and resources to developing risk mitigation 

strategies for these UAs. Please refer to the following sections for further information:

Exhibit 1

Section 1: Safety Goals

Section 2.4: Incident management and investigation

Section 3: Risk Management

Section 4: Safety Assurance

Section 5: Safety Training

Section 6: Safety Promotion

The enhanced safety and reduced environmental impact achieved using a UA and carrying 

no passengers or crew, rather than a manned aircraft of significantly greater proportions, carrying 

crew in addition to flammable fuel, gives the FAA good cause to find that the UA operation 

enabled by this exemption is in the public interest.

Satisfaction of the criteria provided in Section 333 of the Reform Act of 2012 – size, 

weight, speed, operating capabilities, proximity to airports and populated areas and operation 

within visual line of sight and national security – provide more than adequate justification for the 

grant of the requested exemption allowing commercial operation of petitioner’s UA, pursuant to 

TacSolutions’ rules of operation.

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VIII. Regulations from Which Exemption is Requested

A. Appendix A: FARs as to which TacSolutions wishes the same determination to be 

made as has been made previously.

FAR 

Provision

Applicable condition(s) in 

Section 5 of petition

FAA Exemption Decision

21(h) 1, 2, 3, 4, 5, 15, 24, 27, 28, 

33

Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11111, 11110, 11114, 11136, 11138, 

11150, 11153, 11156, 11157, 11166, 11167, 11170, 

11171, 11172, 11174, 11175, 11176, 11177, 11178, 

11184, 11185, 11188, 11189, 11191, 11192, 11193, 

11195

43.7 13, 14 No. 11208

43.11 12 No. 11208

45.11 29 No. 11208

45.27 29 No. 11188

45.29 29 Nos. 11136, 11157, 11170, 11185, 11193

91.7(a) 12 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11136, 11138, 11150, 11153, 

11156, 11157, 11158, 11160, 11161, 11166, 11167, 

11170, 11171, 11172, 11174, 11175, 11177, 11178, 

11184, 11185, 11188, 11189, 11191, 11192, 11193, 

11195, 11204

91.9(b)(2) 22 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11062, 11063, 

11064, 11065, 11066, 11067, 11080, 11109, 11110, 

11111, 11112, 11114, 11136, 11138, 11150, 11153, 

11156, 11157, 11174, 11177, 11178, 11184, 11185,

11189, 11192, 11193, 11195

91.9(c) 30 Nos. 11136, 11170, 11171, 11174, 11185

91.103(b)(2) 3, 9, 16, 17, 18, 19, 20, 28 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11138, 11150, 11153, 11156, 11158, 

11160, 11161, 11166, 11167, 11171, 11172, 11176, 

11177, 11178, 11184, 11185, 11188, 11188, 11189, 

11191, 11192, 11193, 11195, 11204

91.105 6 No. 11185 

91.109 7, 8 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11112, 11136, 11138, 11150, 

11153, 11156, 11157, 11166, 11167, 11170, 11171, 

11174, 11177, 11184, 11185, 11189, 11191, 11192, 

11193, 11194, 11195, 11206, 11208

91.113(b) 3, 31 No. 11238

14
FAR 

Provision

Applicable condition(s) in 

Section 5 of petition

FAA Exemption Decision

91.119(c ) 4, 33 Nos. 11162, 11163, 11164, 11165, 11166, 111080, 

111109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11160 11161, 11166, 

11167, 11170, 11171, 11172, 11174, 11175, 11176, 

11178, 11185, 11188, 11189, 11190, 11193

91.121 4 Nos. 11162, 11163, 11164, 11165, 11166, 111080, 

111109, 11136, 11138, 11150, 11153, 11156, 11160 

11161, 11166, 11167, 11170, 11171, 11174, 11176, 

11178, 11185, 11188, 11189, 11190, 11193

91.151(a) 16, 17 Nos. 11110, 11153, 11156, 11161; 111109, 11110, 

11112, 11136, 11138, 11150, 11153, 11156, 11160 

11161, 11166, 11167, 11170, 11171, 11172, 11174,

11175, 11176, 11178, 11185, 11188, 11189, 11190, 

11193

91.203 (a) 

and (b)

21 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136,

11138, 11150, 11153, 11156, 11157, 11170, 11171, 

11172, 11174, 11176, 11177, 11178, 11184, 11185, 

11188, 11188, 11189, 11191, 11192, 11193, 11195

91.215 25, 26 No. 11185, 11195

91.403 12, 13, 14 No. 11185

91.405(a) 12, 13, 14 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11158, 11160, 

11161, 11166, 11167, 11170, 11171, 11172, 11174, 

11175, 11176, 11177,11178, 11184, 11185, 11188, 

11188, 11189, 11191, 11192, 11193, 11195, 11204

91.407(a)(1) 14 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11158, 11160, 

11161, 11166, 11167, 11170, 11171, 11172, 11174, 

11175, 11176, 11177,11178, 11184, 11185, 11188, 

11188, 11189, 11191, 11192, 11193, 11195, 11204

91.409(a)(1) 12, 13, 14 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11158, 11160, 

11161, 11166, 11167, 11170, 11171, 11172, 11174, 

11175, 11176, 11177, 11178, 11184, 11185, 11188, 

11188, 11189,11191, 11192, 11193, 11195, 11204

91.409(a)(2) 12, 13, 14 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11158, 11160, 

11161, 11166, 11167, 11170, 11171, 11172, 11174, 

11175, 11176, 11177,11178, 11184, 11185, 11188, 

11188, 11189, 11191, 11192, 11193, 11195, 11204

15
FAR 

Provision

Applicable condition(s) in 

Section 5 of petition

FAA Exemption Decision

91.417(a) 12, 13, 14 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11158, 11160, 

11161, 11166, 11167, 11170, 11171, 11172, 11174, 

11175, 11176, 11177,11178, 11184, 11185, 11188, 

11188, 11189, 11191, 11192, 11193, 11195, 11204

91.417(b) 12, 13, 14 Nos. 11062, 11063, 11064, 11065, 11066, 11067, 

11080, 11109, 11110, 11111, 11112, 11114, 11136, 

11138, 11150, 11153, 11156, 11157, 11158, 11160, 

11161, 11166, 11167, 11170, 11171, 11172, 11174, 

11175, 11176, 11177,11178, 11184, 11185, 11188, 

11188, 11189, 11191, 11192, 11193, 11195, 11204

16
GETTING STARTED 

Thank you for purchasing the Graupner HoTT 2.4 System Please read through this entire manual before 

you attempt the installation and usage of your Graupner HoTT 2.4 System!

These operating instructions are part of this product. They contains important notes to the operation and 

handling. Please take this into consideration when you pass on the product to third parties. Neglect of 

the operating instructions and the safety instructions lead to expiring the warranty. 

Graupner constantly work on the advancement of all remote control systems; changes of the scope of delivery in form, technology and equipment we must reserve ourselves therefore. Please have understanding 

for the fact that from data and illustrations of this operating instructions no requirements can be derived.

Please keep these instructions for further reference!

1. GENERAL NOTE

When switching on or adjusting the radio control system it is essential to keep the transmitter aerial at 

least 15 cm away from the receiver aerials at all times. If the transmitter aerial is too close to the receiver 

aerials, the receiver will be overloaded, causing the red LED on the receiver to light up. The transmitter 

responds by emitting a beep once every second; the red LED also goes out. The radio control system 

is now in Fail-Safe mode.

If this should occur, simply increase the distance between the aerials until the audible warning signal 

ceases, and the red LED on the transmitter lights up again; at the same time the red LED on the receiver 

should go out.

2. FUNCTIONS 

2.1. Binding

When you wish to use the Graupner HoTT 2.4 GHz receiver with a particular transmitter, the fi rst step 

must always be to “bind” the unit to “its” Graupner HoTT 2.4 GHz RF module (transmitter). This “binding” 

procedure only needs to be carried out once for each combination of receiver and RF module. The units 

supplied in the set are already bound to each other at the factory, i.e. the binding procedure described in 

the following section only needs to be carried out when you wish to use an additional receiver. However, 

it can also be repeated at any time if required, e.g. after changing transmitters. When binding is required, 

this is the procedure:

• Switch the transmitter and receiver on.

• Locate the BIND / RANGE button on the back of the transmitter, and hold it pressed in while you

 press and hold the SET button on the receiver. Both LEDs on the back of the transmitter now glow

 constantly, and the red LED on the receiver fl ashes.

• Under normal circumstances the fl ashing red LED on the receiver will cease to fl ash and switch to 

 a constant green within about ten seconds. This indicates that the binding process is complete. You 

 can now release both buttons, and your transmitter / receiver combination is ready for use.

• However, if the red LED on the receiver continues to fl ash for longer than ten seconds, then the 

 binding process has failed. If this should occur, repeat the whole procedure.

2.1.1.Binding“ multiple receivers in one model

If required, it is also possible to bind multiple receivers to the transmitter for a particular model. The fi rst 

step is to bind each receiver individually using the procedure already described.

When the system is in use, the receiver which was bound last is the Master receiver. Any telemetry sensors installed in the model must be connected to this unit, as only the Master receiver transmits sensor 

data using the downlink channel. The second and all further receivers operate in parallel with the Master 

receiver but in Slave mode, with the downlink channel switched off.

The control functions can also be distributed amongst multiple receivers; this is carried out using the 

Channel Mapping function of the SMART-BOX (Order No. 33700). In the same way it is possible to assign one control function to multiple receiver outputs; a typical example would be the use of two servos 

for each aileron instead of only one, etc.

Getting Started Graupner HoTT 2.4 01

17
2.2. Range checking

The method of checking the effective range of the Graupner HoTT 2.4 GHz system is described below. 

We recommend that you ask a friend to help you with this procedure.

After binding the receiver to your transmitter, switch the transmitter and the receiver on, and wait until 

the green LED on the receiver lights up.

• Install the bound receiver in the model in its fi nal intended position.

• Switch the RC system on, so that you can observe the movement of the servos.

• Set up the model on a fl at surface (pavement, closely mown grass or earth), and ensure that the

 receiver aerials are located at least fi fteen cm above the ground. This may require a support for the

 model.

• Hold the transmitter at hip-height, away from your body, but do not point the aerial directly at the

 model; instead turn and / or angle the aerial tip so that it stands vertical, and keep it there for the

 duration of the range check.

• Locate the BIND / RANGE button on the back of the transmitter, and press it to initiate range-check

 mode. Hold the button pressed in until the transmitter starts to beep at a regular rhythm; the red and

 green LEDs adjacent to the BIND / RANGE button now fl ash alternately.

• Walk away from the model, operating the transmitter sticks constantly. If you detect an interruption

 in the link within a range of about fi fty metres, stand still and attempt to reproduce it.

• If the model is fi tted with a motor, switch it on in order to check whether the power system is gene-

 rating interference.

• Continue to walk away from the model until you reach the point where perfect control is no longer

 possible.

• Now press the BIND / RANGE button on the transmitter once more; this terminates range-check 

 mode manually, and the model should respond normally to control commands. If this does not occur

 with 100% reliability, the system should not be used. Contact your local Service Department of 

 Graupner GmbH & Co. KG.

• Range-check mode is usually terminated manually when the user presses the BIND / RANGE but

 ton, but it terminates automatically after about ninety seconds in any case. The red LED now glows

 constantly again, while the green LED either glows constantly or fl ashes continuously, according to

 the Country setting.

• We recommend that you check effective radio range before every fl ight. While you are carrying 

 out the check, simulate all the servo movements which will take place when the model is in fl ight. 

 The ground range must always be at least fi fty metres in order to ensure safe, reliable model con-

 trol. 

Note:

Range-check mode is usually terminated manually when the user presses the BIND / RANGE button, 

but it terminates automatically after about ninety seconds in any case.

CAUTION:

During normal operations (i. e. when controlling a model) never press and hold the programming 

button on the transmitter module!

2.3. Fail-Safe function

In its default state (as delivered) the receiver is set to “Hold” mode, i.e. if a fail-safe situation occurs, all 

the servos connected to it maintain the last position detected as valid. In this mode the red LED on the 

receiver lights up when interference occurs, and the red LED on the transmitter goes out. The transmitter also starts beeping about once per second as an audible warning.

You can exploit the safety potential of the fail-safe option by at least programming the throttle channel to 

respond to a fail-safe situation: the throttle channel of an engine-powered model should be set to idle, 

the throttle channel of an electric-powered model to “stop”, and the throttle channel of a model helicopter 

to “Hold”. If interference should occur, these settings will help prevent the model fl ying out of control, 

possibly causing personal injury or property damage.

IMPORTANT:

The two functions “Binding” and “Range check” described above can be used regardless of the method 

you last employed to program the transmitter, i.e. using the programming button or the SMART-BOX; 

neither of these two options causes signifi cant changes to the settings saved in the receiver. However, 

02 Getting Started Graupner HoTT 2.4

18
if you call up the Fail-Safe function using the programming button as described below, this resets ALL 

the settings of the SMART-BOX at the Fail-Safe screen (RX FAIL SAFE) - and this includes the settings 

available through the facilities of the programming button. At the same time the Country setting will 

revert to Universal if you have previously selected “France” using the programming button - see below 

under “2.4”. You MUST therefore select the Country setting again if necessary. For this reason, wherever possible it is always best to maintain your programmed settings using the SMART-BOX.

Switch your receiving system on. Locate the BIND / RANGE button on the back of the transmitter, and 

hold it pressed in while you switch the transmitter on. Release the button again once it is switched on.

You can now call up the desired Fail-Safe mode (Fail-Safe on / off, Hold, or Standard) by cycling through 

the modes with a brief press of the BIND / RANGE button:

• Fail-Safe mode: when you press the BIND / RANGE button, the transmitter beeps once; the red

 and green LEDs glow constantly.

 It is now possible to program positions to which the servos will move in a Fail-Safe situation; this

 occurs after a “Hold” period of 0.75 seconds: move the corresponding transmitter controls (sticks,

 rotary knobs, INC / DEC buttons etc.) to the desired Fail-Safe positions SIMULTANEOUSLY, then 

 hold the BIND / RANGE button pressed in for three to four seconds. When you release the button,

 both the red and green LEDs should light up constantly, and the transmitter should not emit an au-

 dible signal: the transmitter now reverts to Control mode. If this does not occur, repeat the procedu-

 re.

• Hold mode (recommended for model helicopters): when you press the BIND / RANGE button,

 the transmitter beeps twice; the red LED lights up constantly, and the green LED goes out (factory

 default setting).

 If interference occurs, all servos programmed to “Hold” remain at the last position detected by the 

 receiver as correct; this situation is maintained until such time as the receiver picks up a new, valid 

 control signal.

 You can save your selection by holding the BIND / RANGE button pressed in for three to four se-

 conds. When you release the button, both the red and green LEDs should light up constantly, and 

 the transmitter should not emit an audible signal: the transmitter now reverts to Control mode. If this

 does not occur, repeat the procedure.

• Fail-Safe OFF: when you press the BIND / RANGE button, the transmitter beeps three times; the

 green LED glows constantly, the red LED goes out.

 You can save your selection by holding the BIND / RANGE button pressed in for three to four se-

 conds. When you release the button, both the red and green LEDs should light up constantly, and 

 the transmitter should not emit an audible signal: the transmitter now reverts to Control mode. If this

 does not occur, repeat the procedure.

• Standard mode (suitable for fi xed-wing model aircraft only): when you press the BIND / RAN-

 GE button, the transmitter beeps four times; both LEDs are off.

 In this mode the throttle servo (channel 1) moves to the Fail-Safe position, i.e. the position you have

 programmed for a Fail-Safe situation, while all the other channels remain at “Hold”.

 Move the throttle stick to the desired position, then hold the BIND / RANGE button pressed in for 

 three to four seconds. When you release the button, both the red and green LEDs should light up 

 constantly, and the transmitter should not emit an audible signal: the transmitter now reverts to

 Control mode. If this does not occur, repeat the procedure.

2.4. Range warning

If the receiver signal in the down-link channel becomes too weak, the transmitter always generates an 

audible range warning in the form of a beep emitted about once per second. Since the transmitter’s 

output is much higher than that of the receiver, you will still maintain full control of the model, but in the 

interests of safety you should fl y the model back towards you until the warning signal ceases again.

If the audible range warning signal does not cease when you reduce the distance, then the transmitter 

or receiver low voltage or temperature warning is active! In this case you must land the model and cease 

operations without delay.

2.5. Firmware update or SMART-BOX connection

The SMART-BOX is connected to the DATA socket on the back of the transmitter.

Getting Started Graupner HoTT 2.4 03

19
Firmware updates for the transmitter RF module can be transferred via the DATA or telemetry interface 

in conjunction with a PC running Windows XP, Vista or 7. For this you also require the USB interface, 

Order No. 7168.6, and the adapter lead, Order No. 7168.6A, which are available separately.

The programs and fi les required for this are available from www.graupner.de in the Download area for 

the corresponding products.

See also chapter 4.1.

04 Getting Started Graupner HoTT 2.4

3. Receiver

3.1 Connections

Plug the servos into the row of sockets on the right-hand end of the receiver. The connector system is 

polarised; note the small chamfer on one edge. Never use force - the plugs should engage easily and 

fully. The socket polarity is also marked on the case: brown wire (-), red (+) and orange (signal).

The servo sockets of the Graupner-HoTT 2.4 receiver are numbered. The socket marked “- +/B” is 

intended for the battery. If necessary, a servo can be connected to this socket in parallel with the power 

supply; a Y-lead (Order No. 3936.11) is required for this.

It is also possible to program the channel 8 for the sum signal using a Graupner HoTT transmitter or the 

SMART-BOX (Order No. 33700). This is important for certain optional devices which require this signal.

Power supply for receiver 33508, 33512

When using High Power servos, connect the receiver power supply/s preferably to the vertical ports of 

the receiver. If necessary, the servos can be connected to this sockets in parallel with the power supply; 

a Y-lead (Order No. 3936.11) is required for this.

The lower sockets (33508 and 33512) should not be used, because an increased voltage drop occurs.

When using a dual power supply, use the sockets on the outside:

Receiver 33506/33508 (GR-12/GR-16): Channel 1 and 6 (or 2 and 5)

Receiver 33512 (GR-24): Channel 11 and 12

The socket marked “T” - telemetry interface - on the left-hand end of the receiver is intended for the 

optional telemetry sensors. This socket is also used for loading fi rmware updates in conjunction with the 

USB interface. This socket is also polarised; note the small chamfer on one edge. Never use force - the 

plugs should engage easily and fully. The socket polarity is also marked on the case: brown wire (-), red 

(+) and orange (T). 

Servo sockets

Programming socket

RECEIVER 33508

Channel 1 and 6

do not use

20
Getting Started Graupner HoTT 2.4 05

3.2. Low voltage warning

If the receiver voltage falls below 3.8 V, the transmitter’s RF module generates a low voltage warning in 

the form of a “general alarm sound”: a steady beeping at intervals of about one second.

Note: The warning threshold can be programmed in the TELEMETRY menu of the transmitter (or with 

the SMART-BOX). Please read the manual of your transmitter.

3.3. Temperature warning

If the receiver temperature falls below -10° C or exceeds +70° C, the transmitter’s RF module generates 

a temperature warning in the form of a “general alarm sound”: a steady beeping at intervals of about 

one second.

Note: The warning threshold can be programmed in the TELEMETRY menu of the transmitter (or with 

the SMART-BOX). Please read the manual of your transmitter.

3.4. Firmware updates

Firmware updates for the receiver can be transferred via the programming socketvia the programming 

socket on the side of the unit, in conjunction with a PC running Windows XP, Vista or 7. For this you 

also require the USB interface, Order No. 7168.6, and the adapter lead, Order No. 7168.6A, which are 

available separately.

The programs and fi les required for this are available from www.graupner.de in the Download area for 

the corresponding products.

See also chapter 4.2.

21
4. Firmware update Graupner-HoTT 2.4 Transmitter and receiver

Firmware updates for the transmitter RF module can be transferred via the DATA or telemetry interface 

in conjunction with a PC running Windows XP, Vista or 7. For this you also require the USB interface, 

Order No. 7168.6, and the adapter lead, Order No. 7168.6A or 7168.6S, which are available separately.

The programs and fi les required for this are available from www.graupner.de in the Download area for 

the corresponding products.

Install the Firmware Update Utility Graupner and the USB drivers on your computer. Check the system 

requirements!

This socket is polarised; note the small chamfer on one edge. Never use 

force - the plug should engage easily and fully.

4.1. Receiver

Connect the adapter lead to the socket on the left-hand end of the receiver, as shown in the illustration. This socket is also polarised; note the 

small chamfer on one edge. Never use force - the plug should engage 

easily and fully.

The black wire (-) must be at the front, the white wire (T) at the back.

4.2. Update procedure

Ensure that the adapter lead is confi gured as shown in the illustrations, and is connected correctly to 

the transmitter or receiver.

Start the Firmware Upgrade Graupner Studio.

Under „Port Select“ select the correct 

COM port „Silicon Labs CP210x USB 

to UART Bridge“, i.e. the one to which 

the USB lead is connected. 

Choose the „HoTT receiver update“ 

menu. Now click on the “File Browse” 

button and select the the previously 

loaded fi rmware fi le ending in *.bin. If 

everything is correct, the fi le will appear in the corresponding window.

The fi rmware fi les are encoded in product-specifi c form, i.e. if you accidentally select a fi le which does 

not match the product (e.g. transmitter update fi le instead of receiver fi le), then the pop-up window “Product code error” will appear, and you will not be able to start the update procedure (fi g. A).

06 Getting Started Graupner HoTT 2.4

22
Press the “Program” button in the software. Wait briefl y until 

you see movement in the progress bar. This make take up to 

fi ve seconds, depending on the computer (fi g. B).

Receiver: press the SET button, and switch the receiver on 

while you hold it pressed in.

After a few seconds the Status screen displays the message 

“Found target device...”; you can now release the button, and 

the fi rmware update process commences.

If the device is not recognised, if the pop-up window “Target device ID not found” appears, or if the process fails before 100% 

is reached, you must restart the update procedure. Repeat all 

the steps as described above.

The Status display and the Progress bar show the progress of 

the fi rmware update. The update is completed when the popup 

message “Download Process Complete” appears (fi g. C).

During the update process both red and green LEDs on the receiver glow constantly. When it is complete, the red LED starts 

fl ashing, the green goes out.

Switch your receiver off, and disconnect the adapter lead.

Caution: after completing an update process, you must initialise the device before using it, i.e. reset it to the factory 

default values.

Initialisation:

Press and hold the SET button on the receiver and switch it on, the red and green LED‘s are blinking. 

After about three seconds the LED‘s expires, then only the red LED fl ashes. Release now the SET 

button, the initialization is complete. 

Please note:

The initialisation procedure erases ALL the settings you have entered. Where necessary, you will need 

to program your preferred settings again.

Any settings you have entered using the SMART-BOX are also lost when you initialise the receiver. If you carry out a receiver fi rmware update, you will need to re-enter these settings.

The latest version of these instructions can be found at www.graupner.de

Getting Started Graupner HoTT 2.4 07

A

C

B

23
Konformitätserklärung gemäß dem Gesetz über Funkanlagen und

Telekomunikationsendeinrichtungen (FTEG) und der Richtlinie 1999/5/EG (R&TTE)

Declaration of Conformity in accordiance with the Radio and Telecomunikations Terminal Equipment

Act (FTEG) and Directive 1999/5/EG (R&TTE)

Graupner GmbH & Co. KG

Henriettenstraße 94-96

D-73230 Kirchheim/Teck

erklärt, dass das Produkt:

declares that the product

Geräteklasse: 2

Equipment class

den grundlegenden Anforderungen des § 3 und den übrigen einschlägigen Bestimmungen des 

FTEG (Artikel 3 der R&TTE) entspricht. 

complies with the essential requirements of § 3 and the other relevant provisions of the FTEG (Article 3 of the

R&TTE Directive).

Angewendete harmonisierte Normen:

Harmonised standards applied

EN 60950:2006

 

EN 301 489-1 V1.7.1

EN 301 489-3 V1.4.1

EN 300 328 V1.7.1 

 Health and safety requirements pursuant to § 3 (1) 1. (Article 3 (1) a))

 Protection requirement concernig electromagnetic compatibility

 § 3 (1) 2, Artikel 3 (1) b))

 Measures for the efficient use of the radio frequency spectrum

 § 3 (2) (Article 3 (2))

Kirchheim, 19. Dezember 2011 Stefan Graupner, Geschäftsführer 

Stefan Graupner, Managing Director

Graupner GmbH & Co. KG Henriettenstraße 94-96 D-73230 Kirchheim/Teck Germany

Tel: 07021/722-0 EMail: Fax: 07021/722-188 info@graupner.de

Gesundheit und Sicherheit gemäß § 3 (1) 1. (Artikel 3 (1)a)) 

Schutzanforderungen in Bezug auf elektromagnetische 

Verträglichkeit § 3 (1) 2, Artikel 3 (1) b))

Maßnahmen zur effizienten Nutzung des Frequenzspektrums 

§ 3 (2) (Artikel 3 (2))

mx-12 HoTT - No. 33112, mx-16 HoTT - No. 33116,

mx-20 HoTT - No. 33124,

GR-12 HoTT - No. 33506, GR-16 HoTT - No. 33508,

GR-24 HoTT - No. 33512

0678

08 Getting Started Graupner HoTT 2.4

24
Getting Started Graupner HoTT 2.4 09

ENVIRONNEMENTAL PROTECTION NOTES

When this product comes to the end of its useful life, you must not dispose of it in the ordinary 

domestic waste. The correct method of disposal is to take it to your local collection point for recycling electrical and electronic equipment. The symbol shown here, which may be found on the 

product itself, in the operating instructions or on the packaging, indicates that this is the case.

Individual markings indicate which materials can be recycled and re-used. You can make an important 

contribution to the protection of our common environment by re-using the product, recycling the basic 

materials or recycling redundant equipment in other ways.

Remove batteries from your device and dispose of them at your local collection point for batteries.

In case of R/C models, you have to remove electronic parts like servos, receiver, or speed controller 

from the product in question, and these parts must be disposed of with a corresponding collection point 

for electrical scrap.

If you don’t know the location of your nearest disposal centre, please enquire at your local council offi ce. 

FCC INFORMATION

Graupner GR-16 HoTT #33508 and GR-24 #33512 

FCC ID: ZKZ-33508 and ZKZ-33512

FCC Label Compliance Statement

This device complies with Part 15C of the FCC Rules.

Operation is subject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received, including interference that may cause undesired 

 operation.

WARNING:

Changes or modifi cations not expressly approved by the party responsible for compliance could void 

the user‘s authority to operate the equipment.

NOTE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15C of the FCC Rules. These limits are designed to provide reasonable protection against 

harmful interference in a residential installation. This equipment generates uses and can radiate radio 

frequency energy and, if not installed and used in accordance with the instructions, may cause harmful 

interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more 

of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connec-

 ted.

• Consult the dealer or an experienced radio/TV technician for help.

RF Exposure Statement

This device has been evaluated to meet the FCC RF exposure requirement when used in combination 

with the genuine Graupner HoTT accessoires and operated with a minimum distance of 20 cm between 

the antenna and your body.

25
10 Getting Started Graupner HoTT 2.4

ACCESSORIES:

Order No. 33505 Receiver GR-12S HoTT

Order No. 33506 Receiver GR-12 HoTT

Order No. 33508 Receiver GR-16 HoTT

Order No. 33512 Receiver GR-24 HoTT

Order No. 33600 Graupner HoTT GPS/Vario 

Module

26
ACCESSORIES:

Getting Started Graupner HoTT 2.4 11

Order No. 33611 General Air-Module Graupner HoTT 

Vario, RPM, Fuel, 2x temperature, 2x 

voltage, max. current 40A, capacity, 

single cell voltage 2 -6 S

Order No. 33615

Order No. 33613 Graupner HoTT Temperature Sensor 

200°C, voltage sensor

Graupner HoTT RPM Optical Sensor

Order No. 33700 HoTT SMART BOX

Order No. 33612 Graupner HoTT Temperature Sensor 

120°C, voltage sensor

27
Graupner GmbH & Co. KG

Henriettenstraße 94 – 96

D-73230 Kirchheim/Teck

Germany

www.graupner.de

Änderungen sowie Liefermöglichkeiten vorbehalten. Lieferung durch den Fachhandel. Bezugsquellen 

werden nachgewiesen. Für Druckfehler kann keine Haftung übernommen werden.

Specifi cations and availability subject to change. Supplied through specialist model shops only. We will 

gladly inform you of your nearest supplier. We accept no liability for printing errors.

Sous réserve de modifi cations et de possibilité de livraison. Livraison uniquement au travers de magasins spécialisés en modélisme. Nous pourrons vous communiquer l’adresse de votre revendeur le plus 

proche. Nous ne sommes pas responsables d’éventuelles erreurs d’impression.

Con riserva di variazione delle specifi che e disponibilità del prodotto. Fornitura attraverso rivenditori 

specializzati.Saremmo lieti di potervi indicare il punto vendita più vicino a voi. Si declina qualsiasi responsabilità per errori di stampa.

HoTT 1.0 / November 2012 - EN V1.5 

28
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Altura Zenith

Explore the Altura Zenith

Unprecedented quality

Altura Zenith

Fly tomorrow's innovation today

Altura

Zenith

Control &

Functions

Payload

options

Aircraft

performance

What’s in

the package?

Product

gallery

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 EN

29
Altura Zenith Aircraft system - Aerialtronics

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Flight-time up to

45 minutes

Payload up to

2.9 kg

GPS assisted

flights

Winds up to

14 m/s

Integrated

fail-safe system

Design, beyond the cutting edge

The Altura Zenith sets a precedent for the design of unmanned aircraft system, by

 combining state of the art technology with remarkably flat, compact and

 lightweight design. Starting from scratch enabled us to develop a multirotor

 aircraft system that can meet a wide variety of application requirements without

 compromise.

Unrivalled performance

Performance and beauty are the cornerstones of the Altura Zenith. The structure

 was designed to enclose electrical components of the highest quality in a

 streamlined manner. Hidden within a super flat design, the Zenith carries a

 20.000 mAh battery, which facilitates up to 45 minutes of flight-time with total

 payloads of up to 2.9kg.

30
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Altura Cardan adaptor

A unique patented payload adaptor

Easy to operate

31
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Everyone can fly the Zenith

Advanced propulsion system

Customized optimization of flight-time and payload

Easy to operate

The Zenith can be operated by tablet and RF joystick. The intuitive tablet control

 interface is designed to facilitate swift and easy learning whilst the RF joystick

 enables stabilized precision flights. Convience is key!

Learn more

Safety first!

The Altura Zenith was designed according to aviation grade standards to ensure

 the highest levels of safety. Each Zenith is thoroughly flight tested and equipped

 with several fail-safes to avoid incidents or danger. Safety is guaranteed by

 Zenith.

Learn more

Explore all control features

32
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The Aerialtronics in-house research team has spent over 6500 man-hours developing and optimizing the

 propulsion system of the Altura Zenith. The Zenith is equipped with 4 or 8 brushless motors to enable optimal

 torque, rpm and energy efficiency ratios. The brushless motors combined with efficient 16” propellers exert over

 16kg of vertical thrust. However, there is no need to question safety. A general flight with recommended payload

 is flown at approximately 30 to 40 percent of maximum power. So, there is plenty of room for expansion.

High-performance batteries

Integration of the latest high performance and

 high capacity batteries of up to 20 Ah, makes

 the Zenith more compact, yet equally efficient.

Aircraft performance

Flight-time up to 45min

The modular setup enables customized

 optimization of payload and flight time

 facilitating up to 45 minutes of flight time.

Aircraft performance

Payload up to 2.9kg

The onboard propulsion system, facilitates a

 remarkable payload range up to 2.9kg, which

 makes it suitable for almost all applications.

Aircraft performance

33
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Mastermind

Innovative control

The mind of the Zenith is where the magic happens.

The advanced flight controller ensures effortless, safe and stable flights. The Zenith essentially thinks for you.

The Zenith allows you to focus on obtaining the information you require whilst it manages your flight for you.

34
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The efficiency of 4, the power of 8

Explore the Zenith family

Compare aircrafts

35
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Request our brochure

Salutation

Call us 0031 (0)70 322 32 24 E-mail us request@aerialtronics.com

Safety and Security

Inspection

C ti

Country *

Altura Zenith

Altura Enviar HD

Alt X 23 i b l

Product Gallery

Altura Zenith right Altura Zenith left Altura Zenith back Altura Zenith front

36
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Products

Altura Zenith

Control & Functions

Payload options

Dupla Vista

Altura Nucleo+

Video transmission

Company

About Aerialtronics

Management Team

Services

Careers

Media

Video Gallery

Contact

Company details

Terms & Conditions

Wind turbine Accident & Crime Scene Investigation

Crowd control Fire Fighting

Search & Rescue (SAR) Surveillance

Geomorphology Mapping

Crop Science Live Stock Control

Creative High voltage

Infrastructure Anti-Poaching

Drug & Gas Detection SWAT

Traffic Monitoring Surveying

Applications

Call us: +31(0)70 322 32 24 Email us: request@aerialtronics.com

37
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Altura Zenith

Simplicity facilitates easy control

Everyone can fly the Zenith

Altura Ground Control

Control without limitations

Altura

Zenith

Control &

Functions

Payload

options

Aircraft

performance

What’s in

the package?

Product

gallery

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Altura GCS App

Joystick RF control

The Joystick RF control module enables full manual or GPS assisted control.

 Pilots can adjust the flight direction, payload or camera angles from the ground,

 according to their specific requirements.

Tablet control

The touchscreen tablet control has a simple, intuitive user interface, which

 enables easy navigation and flight information. Automated ”take-off” and flight

 programming are within one touch reach.

39
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Simplifies flight

Aircraft telemetry & status

The Altura GCS app provides you a

 detailed overview of the aircraft status

 such as location, battery status and

 GPS.

Automate with waypoints

Fly autonomously along pre-defined

 flight paths and independently

 gather the required data.

Dog mode / Follow me

The Altura Zenith autonomously follows

 and films you by carrying our GPS

 enabled GCS tablet.

Auto take-off & landing

Do not worry about take-off and

 landing. It is now possible to start,

 take-off and land the Zenith by a flick

 of a switch.

Photogrammetry &

 mapping

Heading lock

This mode will cause the Zenith to

Virtual fence & safe zones

The Zenith can be flown within its

Aircraft configuration

40

The Altura GCS app enables you to
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Easily pre-define flight grids, after

 launching the Zenith, the software

 takes control, navigates and takes

 pictures according the grid

 remember which direction is “forward”

 so you don’t have to worry about the

 aircraft heading during flight.

 virtual shelter of which it can ́t leave

 the virtual pre-defined flight radius or

 maximum height.

 adjust functions such as: payload

 settings, cruise-speed, max-height and

 flight distance.

Joystick RF control

For those who requires precise handling.

Manual control

Pilots can manually adjust the flight

GPS assisted flights

The pre-programmed switches allows

Aircraft telemetry & status

The RF controller is provided with an

Payload or camera control

41

Pilots can remotely adjust the payload
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 direction, height, cruise-speed and

 have full control on all payload

 features from the ground.

 the pilot to switch between various

 flight-modes, such as: GPS/Altitude

 hold, coming home and landing.

 build-in LCD status monitor, which

 provides you with the most important

 aircraft status information.

 tilt and panning angle and have full

 control on all payload features from the

 ground at the same time.

Dual operation

Focus on flight as well as payload

42
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Analyze in realtime

The Zenith provides you a cristal clear live-view image

In the dual operation mode the system is configured with a second control unit

to facilitate a focus on both the flight as well as the payload configuration. This allows the users

to perform safe and steady flights whilst delivering optimal data or imagery.

43
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Live view

The live HD downlink provides real-time access to

 the Zenith’s video feed via HD or SD monitor. This

 feature enables the operator on the ground to see

 what the camera is recording in the sky. more...

Upgrade to HD quality

The Zenith comes standard with an SD quality

 (analog)video-link, for high-end broadcast purposes,

 you can upgrade the video transmitter to HD

 encrypted quality. more...

Up to 1km range

The Altura Enviar HD video transmitter provides

 a unique Full HD 1080i – H.264 encrypted video

 feed with as little as 20ms latency and a range of up

 to 1 km. more...

Ground control station

From standard to premium

44
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Request our brochure

Salutation

Safety and Security

I ti

Country *

Altura Zenith

Alt E i HD

 

Product gallery

Ground control station standard Ground control station premium Camera controller standard Camera controller premium

45
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Products

Altura Zenith

Control & Functions

Payload options

Dupla Vista

Altura Nucleo+

Video transmission

Company

About Aerialtronics

Management Team

Services

Careers

Media

Video Gallery

Contact

Company details

Terms & Conditions

Wind turbine Accident & Crime Scene Investigation

Crowd control Fire Fighting

Search & Rescue (SAR) Surveillance

Geomorphology Mapping

Crop Science Live Stock Control

Creative High voltage

Infrastructure Anti-Poaching

Drug & Gas Detection SWAT

Traffic Monitoring Surveying

Applications

Call us 0031 (0)70 322 32 24 E-mail us request@aerialtronics.com

Safety and Security

Inspection

C ti

Altura Zenith

Altura Enviar HD

Alt X 23 i b l

Call us: +31(0)70 322 32 24 Email us: request@aerialtronics.com

46
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Altura Zenith ATX4

The endurance winner

Altura Zenith ATX8

A true heavy lifter

Altura Zenith

Aircraft performance

Payload ATX4

Take-off weight

4.6 kg

Max payload ATX4

1.4 kg

Payload ATX8

Take-off weight

5.6 kg

Max payload ATX8

2.9 kg

Flight-time graph ATX4

Max flight time

45 minutes

Battery

22.2V - 16.600 mAh

Flight-time graph ATX8

Max flight time

35 minutes

Battery

22.2V - 16.600 mAh

Altura

Zenith

Control &

Functions

Payload

options

Aircraft

performance

What’s in

the package?

Product

gallery

Geomorphology

Mapping

Surveying

Traffic Monitoring

SWAT

Anti-Poaching

Creative

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Weather conditions ATX4

Max wind speed

Up to 9 m/s

Weather

Dry to light rain or snowfall

Weather conditions ATX8

Max wind speed

Up to 14 m/s

Weather

Dry to light rain or snowfall

Flight performance ATX4

Max cruise speed

20 m/s

Average cruise speed

5 m/s (adjustable)

Flight performance ATX8

Max cruise speed

20 m/s

Average cruise speed

5 m/s (adjustable)

Aircraft dimensions

Length x Width

600 x 600 mm

Height

350 - 550 mm

MTOW ATX4

6.0 kg

MTOW ATX8

8.5 kg

Joystick controller

Controller frequency

2.4 Ghz

Telemetry frequency

Variable

Range

1000 m

Tablet controller

Controller frequency

2.4 Ghz

Telemetry frequency

Variable

Range

1000 m

Video frequency analog Video frequency digital Video frequency analog Video frequency digital

48
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Control functions

12 Channel manual RF control

GPS / Altitude Hold

Auto go home and landing

Camera angle control

Camera shutter and zoom

Multiple camera switching

Automatic fail-safe system (signal loss)

Telemetry (data display)

Battery voltage (V)

Battery usage (mAh)

Range / Signal status

5.8 Ghz 2.1 - 2.9 Ghz

Control functions

Auto take-off and landing

Auto go home and landing

GPS waypoint navigation

Direction lock (carefree)

Camera point of interest

GIS mapping

Telemetry (data display)

Battery voltage (V)

Altitude & Distance (meters)

GPS Longitude/Latitude coordinates

Number of GPS satellites

Flight-time (min)

Flight mode

System state

Joystick display

Battery usage (mAh)

5.8 Ghz 2.1 - 2.9 Ghz

Aircraft system overview

49
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Airworthiness approvals

The Altura Zenith Aircraft systems have successfully received Design & Construct and

Products

Altura Zenith

Control & Functions

Payload options

Dupla Vista

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Video transmission

Company

About Aerialtronics

Management Team

Services

Careers

Media

Video Gallery

Contact

Company details

Terms & Conditions

Wind turbine Accident & Crime Scene Investigation

Crowd control Fire Fighting

Search & Rescue (SAR) Surveillance

Geomorphology Mapping

Crop Science Live Stock Control

Creative High voltage

Infrastructure Anti-Poaching

Drug & Gas Detection SWAT

Traffic Monitoring Surveying

Applications

Request our brochure

Salutation First name*

E­mail*

Call us 0031 (0)70 322 32 24

Last name*

Phone

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Select Application

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Select Product

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50
51
52
en/MC-20

19

LotharF

MikroKopter.de

53
Contents

1 Info...............................................................................................................................................................1/52

2 Graupner MC-20 HoTT.............................................................................................................................2/52

2.1 Instruction for the MC-20.............................................................................................................4/52

3 Configure the transmitter + bind receiver...............................................................................................5/52

3.1 Spring in the transmitter...............................................................................................................5/52

3.2 Set Stick Mode..............................................................................................................................5/52

3.3 Bind the receiver...........................................................................................................................7/52

3.4 Set the receiver to sum-signal.....................................................................................................10/52

3.5 Set servo adjustment...................................................................................................................12/52

3.6 ASSIGN CHANNELS................................................................................................................14/52

4 Connect receiver.......................................................................................................................................18/52

4.1 Connection of the receiver to the FlightCtrl2.1..........................................................................18/52

4.2 Receiver GR-12..........................................................................................................................19/52

4.3 Receiver GR-16..........................................................................................................................22/52

4.4 Receiver GR-24..........................................................................................................................23/52

5 Check function receiver and channels in the KopterTool.....................................................................26/52

6 Telemetry settings.....................................................................................................................................28/52

6.1 Select Sensor...............................................................................................................................28/52

7 Telemetry display......................................................................................................................................30/52

7.1 MikroKopter-Menu.....................................................................................................................31/52

7.2 MikroKopter Text-Telemetry.....................................................................................................33/52

7.3 Telemetry - additional Info.........................................................................................................36/52

8 Set voice output and Vario.......................................................................................................................38/52

8.1 Selection of announcements.......................................................................................................38/52

8.2 Announcements "All Messages" or "Warnings only"................................................................40/52

8.3 Voice output set to a button........................................................................................................42/52

8.4 VARIO-Altitude regulator via loudspeaker................................................................................44/52

9 Logfile in the Transmitter........................................................................................................................46/52

9.1 Starting the SD-Logging in the Transmitter...............................................................................47/52

10 Setting for a flight simulator or trainer mode......................................................................................48/52

11 Example: Setting - Download................................................................................................................50/52

11.1 Modell memory for transmitter.................................................................................................50/52

11.2 Setting FlightCtrl......................................................................................................................52/52

en/MC-20

i

54
1 Info

Important

If you use the latest Graupner software on your transmitter and receiver, you have to switch off the

FAIL SAFE in the receiver !!!

If you do not switch off the FAIL SAFE the copter can not note the "signal lost" if the connection is broken !!!

Switching off goes like this:

• Switch ON the transmitter and receiver

• Push and hold the button ESC - the menu Menü Telemetry opens

• Down to SETTING & DATA VIEW and open with SET

• Go right to the menu RX FAIL SAFE

• OUTPUT CH und INPUT CH are set to 01

• Down to MODE and edit with SET

• Change from HOLD to OFF

• Pres SET again and close the menu with ESC

Ready.

If now the transmitter / receiver lost the signal, the copter will note this.

You can test this quick.Switch off the transmitter. Now the copter should beep.

The described settings and procedures are related to the current V4 from Graupner.

All references to pages of the instruction manual refer to the current manual "33020_mc20_HoTT" (Link).

A working model memory for the MC-20 and a setting for the FlightCtrl you can find and download under

"Example: Setting - Download".

See also: HoTT-Update

1/52

55
2 Graupner MC-20 HoTT

Shoplink: Graupner MC-20 HoTT

The MC-20 HoTT is an ideal transmitter for the MikroKopter. With its function you are able to use all 12

channels of the FlightCtrl.

The data:

• 12 channels for switches, buttons and potis

• 2,4GHz transfer technology

• Graupner indicates a range of about 3km (with receiver GR-16 or GR-24)

• Bidirectional communication between transmitter and receiver

• Display of the MikroKopter-Telemetry on the built-in and illuminated 8x21 character LCD

• Language edition of the telemetry values (via connected loudspeaker or head-set)

• 12 switches (3 three-way switches, 5 two-way switches, 2 pushbutton, 2 two-way switches with lock)

• 2 INC/DEC-switches

• 4 analog Potis

• Built-in DSC-socket for the connection of flight simulators (AeroSim) or a TrainerMode

More than 200 systems can be used simultaneously -> No agreements on channels like 2 or 3 years

ago

• 

• Future-proofed with update capability via USB Interface (HoTT-Update)

• Different menu-languages for the transmitter (i.e. Dutch, English, French, German, Italian, Spanish)

2/52

56
Graupner MC-20 HoTT

INFO:

The HoTT-Telemetry is supported from FlightControl V2.1.

NEW: Support of the Graupner V4 version.

The needed software for the Graupner transmitter/receiver and the needed voice file you can download

here: Download

Now with the V4 you can display the telemetry data in a new menu. The display in the text-telemetry is also

still possible.

In addition customized voice messages can be played to the same time.

That is possible since the following software versions:

At the Kopter:

FlightCtrl V 0.88m + NaviCtrl V 0.28m (Link)

• 

en/MC-20 04/03/15 23:02:10

3/52

57
Graupner transmitter/receiver:

Transmitter MC-20 HoTT (V4) V 1.016

Receiver GR-16 V 5a70 / GR-24 V 3a40

Soundfiles => Dutch, English, French, German, Italian, Spanish

2.1 Instruction for the MC-20

The instruction of the appropriate and actual version you can download directly from Graupner: MC-20 HoTT

Instruction Manual

en/MC-20 04/03/15 23:02:10

4/52

58
3 Configure the transmitter + bind receiver

3.1 Spring in the transmitter

By default there is a spring at the gas stick which keeps it always in the center position.

Normally this spring of the gas-stick is without function to move the stick infinitely variable. (Instruction of

the transmitter - page 21)

If you have already a little bit experience and if you want to fly with vario-height control all the time, you

don't need to remove the spring.

If you leave the spring in function so that the Gas-Stick is always in a middle-position you need to enter in the

setting (Link) at "Stick neutral point" the middle-position => 127:

3.2 Set Stick Mode

The easiest way (also for beginners) is to fly the MikroKopter in Mode2.

Here you have the function "Gas" and "Yaw" on the left control stick, "Nick" and "Roll" on the right control

stick.

(Instruction of the transmitter - page 84)

If you fly a different mode over years you can also use it here.

The stick arrangement for the different modes (1-4) and how the various functions of the MikroKopter can be

set via the transmitter is described here: Stick-Setup

Adjust transmitter to Stick-Mode2 (or a different mode):

• In the opening screen of the transmitter you need to press on SET to enter the settings.

With the arrow keys UP/DOWN you choose the entry Base setup model and with the key SET you

open it.

• 

Here you switch to the entry Stick mode and choose it with the SET button (The displayed number is

now a dark background).

• 

• With the arrow keys you can set now the desired mode (1-4) and save it with "SET".

• Via the button "ESC" you can switch back.

5/52

59
Channel assignment of the control sticks in Mode2:

• Channel 1 = Gas

• Channel 2 = Roll

• Channel 3 = Nick

en/MC-20 04/03/15 23:02:10

6/52

60
• Channel 4 = Yaw

3.3 Bind the receiver

Transmitter and receiver have to be bound together, so that the receiver only reacts to that transmitter.

(Instruction of the transmitter - page 69)

To bind the receiver you do as follows:

• When turning on the transmitter you see the message RF ON / OFF. Choose OFF.

• The receiver has to be supplied with 5V (i.e via 3-core-wire from the FlightCtrl).

• Press "SET" in the opening screen to get into the settings.

• Select "Base setup model" with Up / Down and open it with the button SET.

In that menu pull down with the arrow key to the entry Base Setup Model.

♦ Only if there is already a "BIND", press once SET to get a "n/v".

• 

At the receiver now press and hold down the button "SET":

♦ Receiver GR-12 => hold down "SET" button.

Receiver GR-16 => hold down "SET" button until the red and green LEDs light together

(maybe difficult to see that clearly).

♦ 

Receiver GR-24 => hold down "SET" button until the red and green LEDs light together

(maybe difficult to see that clearly).

♦ 

• 

• Press "SET" within 3 seconds at the transmitter (in the row "RF BIND)

• "Finding" appears in the display for a short time.

"RF BIND [bind]" appears in the display at success and the green LED lights continously at the

receiver.

• 

en/MC-20 04/03/15 23:02:10

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61
en/MC-20 04/03/15 23:02:10

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62
en/MC-20 04/03/15 23:02:10

9/52

63
3.4 Set the receiver to sum-signal

The !Mikrokopter needs a so-called !sum-signal. All channels of the receiver are included in it. This makes

the wireing a lot easier compared to normal servo-receivers.

After the receiver has been bound to the transmitter you can set the PPM sum-signal:

(Instruction of the transmitter - CH OUTPUT TYPE - page 238)

• The receiver has to be supplied with 5V (i.e via 3-core-wire from the FlightCtrl).

• Hold down "ESC" at the transmitter for about 2 seconds -> You get into the menu "Telemetry".

• Select SETTING & DATA VIEW and open it via the button SET.

• The menu RX SERVO TEST will open.

Switch to the menu "RX SERVO TEST" by pressing "right" 5 times.

INFO: If you have clicked to far and you see the MK-Menu you can remove the 1-core

telemetry plug from the FC to get back to the page "RX SERVO TEST".

♦ 

• 

• In the menu "RX SERVO TEST" you switch to the lower entry CH OUT TYPE.

With the button SET you open that entry and you change from "ONCE" to SUMO (with the arrow

keys UP/DOWN).

• 

• Confirm with SET.

You get to the data field with the number of channels in the sum-signal. Set this to "12" with

Up/Down (for 12 channels).

• 

en/MC-20 04/03/15 23:02:10

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64
en/MC-20 04/03/15 23:02:10

11/52

65
INFO

If you hold down the button (accidentially) at the receiver while connecting, the "SUMO 12" setting will be

deleted. This can be also happen if you connect the receiver with a powered up Mikrokopter and hold down

the button. In this case you have to set this setting again.

INFO

If you doesn't have a number behind SUMO an older software version is installed in the receiver!

You have to update the receiver. How to update the receiver you can see here: Update

3.5 Set servo adjustment

To run the functions on the MikroKopter properly the servo adjustment of the 12 individual channels must

reach a range of "0" to "254" (See also later in the KopterTool).

The servo adjustments at the transmitter are pre-set to 100% for all channels. If you leave it in that way you

are not able to reach the full servo adjustment.

For that reason you need to set all servo adjustments to 103%.

To set the servo adjustments we proceed as follows:

• Press SET in the opening screen to get into the settings.

• Select servo adjustment with UP/DOWN and open it with SET.

Switch to the channel (S1-S12) which need to be changed. Use the arrow-key to the right on the

percentages for "- travel +" and select SET.

• 

(Both percentage values are selected at the same time (dark background))

INFO: If only one percentage value is selected you can toggle/turn through the appropriate

switch/potentiometer to the second percentage

♦ 

• 

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• Change the percentage value with UP/DOWN to "103%" and press SET to confirm.

In that way you set all 12 channels.

(Instruction of the transmitter - page 90)

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3.6 ASSIGN CHANNELS

In your transmitter the first four channels are already assigned to the control sticks for the function Gas, Yaw,

Nick und Roll.

The remaining channels (5-12) you can assign freely to switches, buttons and potentiometer on your

transmitter.

With those channels you can control the functions of the MikroKopter.

(Instruction of the transmitter - page 71)

Before starting with the assignment of the channels you should establish memory for that at your transmitter.

This memory need to be created as Winged Model. The first memory is usually already set as a Winged Model

and can be used.

Is that not the case or you need an additional model memory (because you operate more than one Kopter or

other models with one transmitter) you can set it as a new Winged Model.

Setting of the channels:

To assign the channels you proceed as follows:

First at all switch all switches to an "OFF"-position (away from you).

• Press SET in the opening screen to get into the settings.

• Select Control adjust with UP/DOWN and open it with SET.

• Choose desired channel with UP/DOWN (i.e. channel 5 => |Input. 5|GL|---| 0%|).

• Here now switch with LEFT/RIGHT to the three bars (---) and push SET.

• A display appears "Move desired switch or control adj.".

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• Now switch the desired switch (or turn potentiometer).

• Instead of the three bars you will see now the operated switchn.

Repeat now the operations for the remaining channels.

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Examples for the channel assignment:

This is an example for the channel assignment. Any other assignment is also possible.

(The first 4 channels for the control are already pre-assigned.)

- Channel 5 (Poti1) => Function altitude hold

- Channel 6 (Poti2) => Function GPS (PositionHold / ComingHome)

- Channel 7 (Poti3) => Free

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- Channel 8 (Poti4) => Function CareFree

- Channel 9 (Poti5) => Camera tilt (Nick)

- Channel 10 (Poti6) => Camera tilt (Roll)

- Channel 11 (Poti7) => Trigger camera & LED on/off

- Channel 12 (Poti8) => Function Motor Protection

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4 Connect receiver

The HoTT-System offeres different receiver which can be used on the MikroKopter.

The connection of the receiver GR-12, GR-16 and GR-24 are described below.

All of the three receiver are able to provide 12 channels via the PPM-Sum-signal.

Each receiver need to be connected with a PPM-Connection-cable and a JR-Data-cable (for the telemetry

transfer) (Link) to the FlightCtrl.

4.1 Connection of the receiver to the FlightCtrl2.1

The PPM-cable as well as the JR-Data-cable for the telemetry will be connected to the FlightCtrl as follows:

• PPM-cable - Black on "GND" (Ground/Minus)

• PPM-cable - Red on "+5" (Plus)

• PPM-cable - Orange on "PPM" (PPM-Data-wire)

• +

• Solder JR-Data-cable (for the HoTT-Backchannel) to "RX".

• (Connected will be this cable to the sensor connector labeled with "T" on the HoTT-Receiver.)

• +

• Jumper "JET" on the FlightCtrl has to be bridged.

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To enlarge -> click on the image

4.2 Receiver GR-12

The GR-12 HoTT is a 6-channel receiver and is able to provide up to 16 channels throughout the sum-signal

(depends on the transmitter).

The range with this receiver is according Graupner: 2000mtr.

Output for the sum-signal GR-12:

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• The receiver has to be bound to the transmitter (see: "Binding").

• The !Sum-Signal must be activated (see: "Set receiver to sum-signal").

• The !Sum-signal is on output 6.

Telemetry connection GR-12:

The receiver has a separate data channel at output 5 for the MikroKopter telemetry:

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 ATTENTION:

The following setting is only for the receiver GR-12!

To receive the telemetry here you need to change the servo-output 5 first.

• In the opening screen of the transmitter press ESC to switch into the telemetry.

• With UP/DOWN choose Setting & Data View and open it with SET.

• With the arrow-keys LEFT/RIGHT switch to RX CURVE.

• Choose 5CH FUNCTION and change it to SENSOR.

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4.3 Receiver GR-16

The GR-12 HoTT is a 8-channel receiver and is able to provide up to 16 channels throughout the sum-signal

(depends on the transmitter).

The range with this receiver is according Graupner: 4000mtr.

Output for the sum-signal GR-16

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• The receiver has to be bound to the transmitter (see: "Binding").

• The !Sum-signal must be activated (see: "Set receiver to sum-signal").

• The !Sum-signal is on output 8.

Telemetry connection GR-16

The receiver has a separate data channel on the other side of the receiver for the MikroKopter-Telemetry:

4.4 Receiver GR-24

The GR-12 HoTT is a 12-channel receiver and is able to provide up to 16 channels throughout the sum-signal

(depends on the transmitter).

The range with this receiver is according Graupner: 4000mtr.

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Output for the sum-signal GR-24

• The receiver has to be bound to the transmitter (see: "Binding").

• The !Sum-Signal must be activated (see: "Set receiver to sum-signal").

• The !Sum-signal is on output 8.

Telemetry connection GR-24

The receiver has a separate data channel on the other side of the receiver for the MikroKopter-Telemetry:

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5 Check function receiver and channels in the

KopterTool

If the receiver is connected to the FlightCtrl and the transmitter is switched on you can check in the

KopterTool the channel assignment.

By operating the appropriate control on the transmitter you can see the peaks of the signal.

Hints:

• As a type of the receiver you must set "Graupner HoTT".

Therefor the telemetry will be activated and set to the correct channel-offset (Otherwise the zero value

would be 133 instead of ca. 128 )

• 

 If you change the type of the receiver you need to save the setting first in the MK (Write) so that

the changfe will be active.

• 

The peaks of the sticks (Nick/Roll/Gas/Yaw) need to have in the middle-position 127 or 128. You can

adjust it with the trim button (next to the sticks).

• 

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6 Telemetry settings

Via the telemetry screen you can display different values over different menus:

• Current LiPo voltage

• Current consumption

• Consumed Lipo-capacity

• Height / Altitude

• Direction

• Number of satellites and SatFix

• Flight speed

• Distance and direction to the "Homeposition"

• Error messages

• Magnet value and in clination

• Temperature of the BL-Ctrl's

• FailSafe value

• Home Altitude

• Used Setting

6.1 Select Sensor

So that the telemetry data can be displayed you need to set the appropriate sensors on the transmitter.

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN choose SENSOR SELECT and open it with "SET".

• Here you can select all sensors.

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7 Telemetry display

On your transmitter you have the opportunity to display the telemetry in two different menues:

Summarized you can find the values of the telemetry in theMikroKopter-Menu:

Or with more and detailed information on several pages in the Text-Telemetry:

 Please note: An audio output as well as logging the GPS position on your transmitter is only with the

MikroKopter-Menu to the same time possible.

If you are in the Text-Telemetry the voice output and the GPS-Logging to the Micro-SD-Card in your

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transmitter is during that time not possible!

7.1 MikroKopter-Menu

 So that the "MikroKopter-Menu" displays the right values you need to select the sensor "GPS".

On your transmitter you will find an extra MikroKopter-Menu which displays you summarized the most

important telemetry values.

Out of the main menu you will get into the telemetry display by pressing UP/DOWN/LEFT/RIGHT of the

transmitter.

You can browse it with the LEFT/RIGHT button to get into the MikroKopter-Menu.

Select the GPS sensor and open the MikroKopter menu:

Step1: In the menu you can see a telemetry display.

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Step2: Press the touch button (up / down) to open the Sensors screen and select GPS.

Step3: If the GPS sensor is selected the sensors display will close automatically. Then you will see this

display.

Step4: Press the touch button (left / right) to open the MikroKopter-Menü.

The following values are displayed in the MikroKopter-Menu:

• Lipo voltage

• Flight Time

• Consumed Lipo-capacity

• Height / Altitude

• Direction of the Kopter

• Actual power consumption

• Numbers of satellites

• Flight Speed

• Distance and direction to the "Homeposition"

If everything is "OK" at your Kopter that will be displayed under "MikroKopter". If you have an error a

message will be displayed.

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7.2 MikroKopter Text-Telemetry

 Please note: If you are in the Text-Telemetry the audio output and the GPS-Logging to the

Micro-SD-Card in your transmitter is during that time not possible!

The "Text-Telemetry" you can open via the menu "Telemetry". With the "Text-Telemetry" you are able to

display more telemetry values.

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Setting & Data View and open it with SET.

• Now either way click 1x arrow "UP" or 6x arrow "RIGHT".

• The Text-Telemetry will open.

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Here the following values will be displayed:

• Lipo voltage

• Flight Time

• Consumed Lipo-capacity

• Height / Altitude

• Direction of the Kopter

• Actual power consumption

• Numbers of satellites

• Flight Speed

• Distance and direction to the "Homeposition"

If everything is "OK" at your Kopter that will be displayed under "MikroKopter". If you have an error a

message will be displayed.

If you press one time the SET button you can display the magnet value and the inclination:

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With the arrow keys LEFT/RIGHT you can open two additional displays in the "Text-Telemetrie":

Anzeige:

• Flight Time

• Lipo voltage

• Consumed Lipo-capacity

• Direction of the Kopter

• Height / Altitude

• Direction to the Homeposition

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• Distance to the Homeposition

• Power consumption

• Flight Speed

• Numbers of satellites + Fix

• Temperature of each BL-Ctrl

and

Display:

• Used Setting

• Min. voltage for low-voltage warning (battery)

• The set Kopter-Type

• Mode and switch status "Altitude switch"

• Mode and switch status "CareFree"

• Mode and switch status "GPS" + FailSafe Time

• The set FailSafe Height

• Position of the control sticks (Ni=Nick, Ro=Roll, GS=Gas, Ya=Yaw, C=Nick camera mount)

7.3 Telemetry - additional Info

In addition to the described telemetry display you can see some additional information / symbols.

These are as follows:

• '-' = No GPS fix

• '/' = off

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• '?' = Coming home, but home Position unknown (goes to PH then)

• 'H' = Coming home

• 'W' = Flying Waypoints

• 'D' = Dynamic Position Hold

• 'P' = Position Hold

• 'm' = Manual controlled

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8 Set voice output and Vario

With the integrated speaker or with headphones you can hear the chosen telemetry values.

8.1 Selection of announcements

In the settings you can choose which telemetry values should be issued:

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Voice Trigger and open it with SET.

Select here the appropriate sensor (i.e. "ELECTRIC AIR-MODUL" and "GPS") and open it with

SET.

• 

• In the opening window you can select the desired menu points for the voice output.

Browse down to "ELECTRIC AIR-MODUL":

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And the settings on "GPS":

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8.2 Announcements "All Messages" or "Warnings only"

Additionally, you can choose messages you want to hear.

If you e.g. will not hear a message if you switch a function (like GPS, altitude, CareFree, etc.) you can change

it.

Therefore you can switch between "All Messages" or "Warnings only":

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• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Setting & Data View and open it with SET.

• Now either way click 1x arrow "UP" or 6x arrow "RIGHT".

• The Text-Telemetry will open.

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To change the announce "click" 3x the arrow "Left". Now you see the following window where you can

change between "All Messages" or "Warnings only".

8.3 Voice output set to a button

To get the selected values one after the other to the voice output you can use here a button on your transmitter.

That need to be set also in the menu "Telemetry":

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Voice Trigger and open it with SET.

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• Here switch to TRIG and activate it with SET.

• An information opens up: "Desired switch to ON Position (Ext. Switch: SET)"

• Push now the desired button on your transmitter.

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8.4 VARIO-Altitude regulator via loudspeaker

Like the voice output a tone can be issued for the climb and the fall via the switched-on altitude regulator on

your transmitter.

It is recommended for that function to use that switch which is used to switch ON/OFF the "Altitude hold".

We switch again into the menu "Telemetry":

• In the opening screen of the transmitter press ESC for around ~2 seconds to switch into the telemetry.

• With UP/DOWN select Voice Trigger and open it with SET.

• Switch here to VARIO and activate it with SET.

• An information opens up: "Desired switch to ON Position (Ext. Switch: SET)"

• Push now the desired button on your transmitter.

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9 Logfile in the Transmitter

The HoTT Telemetry data can be logged on a SD card in the HoTT-Transmitter. Just in case you would loose

a MikroKopter, you could see the last GPS Position in the Logfile of the Transmitter.

(Graupner HoTT Manager)

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(Graupner grStudio => Log View)

9.1 Starting the SD-Logging in the Transmitter

• to start the logging, the "flight time counter" in the transmitter must be started

under "Flight timers" in the menu of the transmitter you can assign a switch to start the flight timer

(see the manual of the Transmitter)

• 

• A small SD-card-Symbol will appear on the LCD when the logging runs

 You can start the "flight time counter" with a switch or a stick, but you can not stop it with the same. For

this you have to press "ESC".

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10 Setting for a flight simulator or trainer mode

You can also use the transmitter with an flight simulator or for the trainer mode. To use all channels of this

transmitter you should change the DSC Output to PPM24.

If you do not change this you can only use the first 5 channels of this transmitter with an flight simulator or

for the trainer mode.

• In the opening screen of the transmitter you need to press on SET to enter the settings.

With the arrow keys UP/DOWN you choose the entry Base setup model and with the key SET you

open it.

• 

• Here you switch to the entry DSC Output and choose it with the SET button.

• With the arrow keys you can set now "PPM24" and save it with "SET".

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11 Example: Setting - Download

11.1 Modell memory for transmitter

 A "ready to use"-setting like above you can download here:

• Download modell memory (for MC-20)

(To enlarge -> click on the image)

After downloading the file (aMK MC-20.mdl) you can copy it directly into a folder "Models/mc-20" on a

Micro-SD-Card.

How you import model memories from the Micro-SD-Card into your transmitter can be read in the instruction

on page 66 (Chapter: Import SD).

>

INFO:

If you insert an empty Micro-SD-Card into the transmitter and switch it on, automatically the needed

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directories will be created.

In this model memory is the upper right Flight-Time counter/Flt active. This one is set in that way as soon as

the Gas-Stick will be moved upwards the Flight-Time counter starts.

This Flight-Time counter is required so that the GPS position data of the Kopter can be saved on a

Micro-SD-Card in your transmitter.

So, if the Kopter is maybe getting lost you still have then the last received coordinates of the Kopter.

Is the Gas-Stick down this counter still continues! (Instruction see page 139)

To stop it you can push the ESC button.

To reset the Flight-Time counter you need to push the UP/DOWN (or LEFT/RIGHT) button to the same time

on the right Touch-Pads.

(Instructions of the transmitter - page 138 + 252)

 The channels in both model memory are set as you can see here.

If you use this model memory you have to set this functions/channels in the settings of the FlightCtrl.

(or you dowload the setting below and update your FlightCtrl with this setting.)

(to enlarge -> click image)

TIPP: If you use a different mode rather then Mode 2 you are still able to use the downloaded model

memory.

After downloading the model memory you can set the desired mode (1,3,4) by yourself (Instruction manual

page 68).

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The control sticks have then the channels/function of the set mode. All other switches/channels remain as

described in the example.

11.2 Setting FlightCtrl

Here you find a setting for the FlightCtrl (from V2.02): Download.

The settings are adjusted with the model memory for the MC-20.

To load the setting into the FlightCtrl, open the settings of the KopterTool.

Here "click" the button Load in the bottom bar and open the downloaded setting "MK-Setting_(V2.00).mkp".

After this "click" the button Write to set the setting into the FlightCtrl.

 Note:

The FlightCtrl have 5 Settings you can save. If you wan to use the downloaded setting in all 5 settings you

have to open each setting single and save the downloaded setting there.

After you safe the setting into the FlightCtrl you have to set the right Mixer (Link).

See also:

• Firmware-0.88

• HottUpdate

• KategorieFernsteuerung

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