S-FHSS/FHSS-2.4GHz system(Auto Detection),
4-channel receiver

R2104GF

Thank you for purchasing the R2104GF receiver.
The R2104GF is designed for use with the Futaba
S-FHSS or FHSS system transmitter. The S-FHSS
system has two(2) operation mode as shown below.
s.ORMAL MODE(IGH 3PEED MODE
The "Normal mode" accepts any type of servos
or the peripherals as the frame rate of the output
is 13.6ms. The "High Speed mode" only accepts
the digital servos, including BLS series, and mostperipheral equipments such as the brushless ESCs.
Link switch

The frame rate of the outputs is 6.8ms.
Please pay special attention to the information
contained within this manual and transmitter's
manual in order to have a pleasant running/flyingexperience.
The R2104GF is compatible with the S-FHSS orFHSS system transmitters as shown "Transmitterand Receiver Compatibility".

ｎ WARNING

LED.%6%2 USE DRY BATTERIES FOR

ｌ THE POWER SUPPLY OF THE R2104GF

AS THEY MAY CAUSE DIFlCULTIESCh output (1 to 4)

Link Procedure
Each transmitter has an individually assigned,unique ID code. In order to start operation, thereceiver must be linked with the ID code of thetransmitter with which it is being paired. Once thelink is made, the ID code is stored in the receiverand no further linking is necessary unless thereceiver is to be used with another transmitter.

1 0LACE THE TRANSMITTER AND THE RECEIVER CLOSE)F THERE ARE MANY S-FHSS/FHSS SYSTEMS TURNEDON AROUND YOUR RECEIVER IT MIGHT NOT LINK TO YOUR
TRANSMITTER )N THIS CASE EVEN IF THE RECEIVERS,%$ STAYS SOLID GREEN UNFOR TUNATELY THERECEIVER MIGHT HAVE ESTABLISHED A LINK TO ONE OFTHE OTHER TRANSMITTERS 4HIS IS VERY DANGEROUSIF YOU DO NOT NOTICE THIS SITUATION )N ORDER TOAVOID THE PROBLEM WE STRONGLY RECOMMENDYOU TO DOUBLE CHECK WHETHER YOUR RECEIVER ISCONTROLLED BY YOUR TRANSMITTER BY GIVING THROTTLEINPUT ETC AND THEN CHECKING SERVO RESPONSETO EACH OTHER WITHIN ONE  METER

2 4URN ON THE TRANSMITTER AND THE RECEIVER
3 0USH AND HOLD THE ,INK SWITCH ON THERECEIVER
4 7HEN THE LINK IS COMPLETE THE ,%$ ON THERECEIVER CHANGES TO SOLID GREEN
0LEASE REFER TO THE TABLE BELOW FOR ,%$ STATUSAND RECEIVER CONDITION
.O SIGNAL RECEPTION
2ECEIVING SIGNALS
2ECEIVING SIGNALS BUT )$IS UNMATCHED

2ED  /N'REEN /N'REEN "LINKｎ WARNING!FTER THE LINKING IS DONE PLEASEｊ CYCLERECEIVER POWER AND CHECK IFTHE RECEIVER TO BE LINKED IS REALLY UNDER THECONTROL BY THE TRANSMITTER TO BE LINKEDNOT PERFORM THE LINKING PROCEDUREｌ $O
WITH MOTORgS MAIN WIRE CONNECTED ORWITH THE ENGINE OPERATING AS IT MAY RESULT INSERIOUS INJURY

Battery terminal (B)Usage condition on "High Speed mode"ｎ CAUTION
7HEN USING THE HIGH SPEED MODE USE A
ｊ &UTABADIGITAL SERVO INCLUDING BRUSHLESSSERVO  !NALOG SERVOS CANNOT BE USED/PERATING 0RECAUTIONS/NCE THE R2104GF DETECTS THE S-FHSSNORMAL MODE S-FHSS HIGH SPEED
MODE OR FHSS MODE THE DETECTEDMODE IS LOCKED AS LONG AS THE POWERIS /. 7HEN NEED TO CHANGE THE
MODE PLEASE CYCLE POWER

2'& 3PECIlCATIONS(S-FHSS/FHSS system, 4-channel receiver)s 2ECEIVING ON '(Z BANDs 3YSTEM S-FHSS/FHSS SYSTEM AUTO DETECTION
s /PERATION MODE .ORMAL(IGH SPEED AUTO DETECTION
s 0OWER REQUIREMENT 6 OR 6 SHARED WITH SERVO
s #URRENT DRAIN M! AT NO SIGNAL
s 3IZE XXv XXMMs 7EIGHT OZ Gs 4HE USE OF ANALOG SERVOS MAY CAUSE SERVO TROUBLEFHSS-2.4GHz/S-FHSS-2.4GHz System
Transmitter and Receiver Compatibility&(332ECEIVER

Transmitter

R603GF
R2004GF
OkayOkayOkay

40, ' &(3340, ' &(3349& ' &(3340, '.ORMAL&(33This device, trade name Futaba Corporation of America, model number R2104GF, complies
with part15 of the FCC Rules. Operation is subject to the following two conditions:(1) This device may not cause harmful interference, and(2) This device must accept any interference received, including interference that may cause
undesiredoperation.
The responsible party of this device compliance is:Futaba Service Center
3002 N Apollo Drive Suite 1, Champaign, IL 61822 U.S.A.
TEL (217)398-8970 or E-mail: support@futaba-rc.com (Support)

R2104GF
Okay
Okay
Okay

&3 FUNCTION #H
&3 FUNCTION #H—Okay&3 FUNCTION !LL CHANNELS" &3 FUNCTION #H
$IGITAL SERVO ONLY AT (IGH 3PEEDMODEOkayOkay&3 FUNCTION #H

(IGH 3PEED

3 &(33Compliance Information Statement (for U.S.A.)

3 &(33&(332ECEIVER.OTE &UTABA FHSS/S-FHSS SYSTEM AND FASST SYSTEM ARE NOT COMPATIBLE EACH OTHER
1M23N17432

FUTABA CORPORATION
1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan
Phone: +81 475 32 6982, Facsimile: +81 475 32 6983
©FUTABA CORPORATION

2010, 8 (1)