NAT NPX136D

Cover Slide

P25 Aviation Radio Training, Introduction to the NPX136D-070 P25 Digital Airborne Radio

Presented by

National Interagency Fire Center,

Edmo Distributors Inc. and 

Northern Airborne Technology Ltd.

March 10-14, 2008

Oxford Suites Hotel, Boise, Idaho 

Introduction

The NPX136D panel mount P25 VHF transceiver is a stand-alone radio designed for aircraft and operated by a single mission user. It provides all the features needed to satisfy communications within the VHF high band. 

VHF P25, Panel Mount Transceiver 

S/W Ver: X.XX

Checking Modules

Introduction

VHF P25, Panel Mount Transceiver 

S/W Ver: X.XX

Checking Modules

Introduction to the NPX136D P25 Digital Airborne RadioNAT will be providing a 3-4 hour session on features, operation, functionality, programming and maintenance of the company’s NPX136D P25 Digital Airborne Radio. The lightweight and compact design is a perfect fit for the space and weight restricted cockpit of helicopters and light fixed-wing aircraft. Operational modes for the radio include Analog Simplex/Semi-Duplex and Digital P25. The NPX136D has been tested and accepted by NIFC/USFS as a ‘fire approved’ radio. 

Introduction (Cont’)

People familiar with VHF FM Radio operation in an aircraft and with an

understanding of the terms used with the digital modulation of the P25 Common Air Interface 

Intended Audience 

Training Schedule 

13:30	Slide Show Presentation.	(~20 minutes)

14:00	Radio Demonstration. 	(~10 minutes)

14:10	Hands on operation of	(~1-3 hours, depending on group size)	- Front Panel Controls

	- Main Frequency Editing

	- Guard Frequency Editing

	- Maintenance

	- PC Application Installation and Operation

	- Channel Loading into Radio

Overview

Aircraft Operation Block Diagram 

Overview

Equipment Block Diagram 

ANTENNA

Add label on antenna

Features

- Analog FM 25 kHz, 12.5 kHz and digital C4FM 12.5 kHz channels.

- Two channel synthesized guard receiver

- Multiple scan modes

- Agile operation

- Encryption capable

- Modular construction

- DTMF generation 

- Dzus panel mount. 2 5/8 in. height.

- Control operation similar to other products from NAT

Specifications

Power	+28 Vdc ( Transmit: 2.6 A max.)

Lights	+28 Vdc, 300 mA max.

Frequency Range	136.0000 - 173.9975 MHz

Operating Modes	Project 25 and Analog Simplex or Semi-Duplex

Channels	255 max. (main) (Zones: 16 max.)Plus two guard channels

Analogue Tones	CTCSS - 42 tones from 67.0 to 254.8 HzCDCSS - 83 data patterns

Remote Interface	RS232C Serial Data Bus

RF Impedance	50 ohms

Channel Increments	2.5 / 6.25 kHz

Channel Bandwidth	12.5 / 25 kHz 

Scan Capability	16 channels max. 1 home, 1 priority, 14 list, 8 chan/sec

Audio Output Power	100 mW (600 ohms)

Guard Audio Output Power, minimum: 10 mW (adjustable) 

Specifications (Cont’)

Carrier Output Power	1 or 10 W

Time-out Timer	30-300 s (Factory Set to 60 s)

Duty Cycle	20% (1 min Tx, 4 min Rx.)

VSWR	20:1 (30 sec duration - undamaged)

Rated Deviation	5.0 kHz (25 kHz BW)2.5 kHz (12.5 kHz BW)

Audio Input Sensitivity	100 mV rms (60% of rated deviation)

Sidetone Audio Output Power:25 mW (Adjustable)

Refer to Install and Operation Manual, Description §1.4 for more details.

Operation, Power On

To turn on the radio, rotate the main (MN) knob clockwise past the OFF detent. 

Refer to Operation Manual section 3.4.2 

Operation, Display Layout

001=Abcd23Efg WSC

T:173.9975 067 LO

Display Type

Channel Number  

Scan Flag

Tone/SquelchFlag  

Frequency

Tone/Squelch Number

Channel Name

Modulation Type

TX Power

Refer to Operation Manual section 3.5

Operation, Controls/Annunciators

Main On/Off/Volume

Main RX/TX Annunciator

001=ABCDEFGHI WSC

R:173.9975 067

Scan- Normal-Guard Transmit

Guard Volume

Guard Channel

Select

Display Switch	  Channel Switch	Squelch/Help Select         Number Pushbuttons

Guard Channel

RX/TX Annunciator

Refer to Operation Manual section 3.4.3

Operation, Change Channels

002=Forestry  NSC

R:173.9975 067

Demonstration of:

Change Channels from keypad

Disable/Enable Squelch

Guard Transmit 

Operation, Squelch Disable

002=Forestry  NSC

MAIN SQ DISABLED

Demonstration of:

Disable/Enable Squelch

Operation, Guard Transmit

GD1=Guard1    N

R:168.6250

Demonstration of:

Disable/Enable Squelch

Operation, Menus

Settings Menu

DsplBrt Lt On:20

Menu Keys

Refer to Operation Manual section 3.4.3.15

Add reference to manual page

Operation, Menus (Cont’)

Menu Structure:

Settings Menu

	Display Menu

Channel Menu

	Edit Main

	Edit Guard

	Edit Zone

	Edit Scan

Maintenance Menu

Refer to Operation Manual section 3.6-3.8

Add manual reference

Operation, Help for Menus

HELP

text scrolls past

Demonstration of help at power up.

Channel Serial Load from PC

Using a personal computer with a RS232 serial data connector system, channel data can be uploaded to, and downloaded from the NPX136D.

The NUDP NPX136D Application runs on a PC and can be used to enter, edit and upload system and channel data to the NPX136D

End of Presentation

About NAT

Northern Airborne Technology Ltd. (NAT) is a leading manufacturer of specialized aircraft communication equipment. 

Products include Audio Management Systems, FM Radios, Intercoms, PA & Loudhailers, Airborne Data Management Systems, Satellite Communication Systems, and Aural Warning Generators. OEMs such as Bell, Eurocopter, MD Helicopters, Raytheon and Rockwell have NAT products installed as standard equipment on numerous production aircraft. 

Founded in Prince George and now located in beautiful Kelowna BC Canada, Northern Airborne Technology Ltd. (NAT) has been a leading designer and manufacturer of specialized aircraft communication equipment since 1979.

With the restructuring of Cobham plc in 2005, NAT is now within the Cobham Avionics & Surveillance division. Continuing to develop avionics and electronic products in response to industry demands, NAT is proud that many of its products have earned recognition as ‘Industry Standard’.

NPX136D Installation and Operation Manual

See www.fs.fed.us/fire/niicd/documents.html

NPX136D ProgrammingFlow Chart

See www.fs.fed.us/fire/niicd/documents.html

NPX136D Cheat Sheet

See www.fs.fed.us/fire/niicd/documents.html