Northern Airborne Technology NTX User Manual
SM28
NTX VHF-FM Series
Remote Mount Transceivers
INSTALLATION AND OPERATION MANUAL
REV 4.10 June 1, 2004
Northern Airborne Technology Ltd.
1925 Kirschner Road
Kelowna BC, Canada
V1Y 4N7
Telephone (250) 763-2232
Facsimile (250) 762-3374
Copyright 2004 by Northern Airborne Technology
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
SM28 Rev. 4.10 NTX VHF-FM Series Remote Mount Transceivers Manual
Performed at factory
Performed at factory
Periodically NAT will release manual amendments. In order to maintain the most
accurate and up to date manual these amendments should be carried out immediately
upon receipt and recorded on the following amendment record.
AMENDMENT RECORD
Amendment
Number
Amendment
Date
Section(s)
Changed
Date
Entered
Entered By
1 Nov 19/04 2
2 Jul 28/05 2
3 Jan 14/08 2
Insert any Amendment Instruction sheets after this page.
Jun 1, 2004 Page ii
ENG-FORM: 820-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
INSTALL_OPS
MANUAL AMENDMENT
Manual:
SM28 NTX VHF-FM Series Remote Mount Transceiver Amendment #: 3
Document # SM28\Install_Ops\809-0003 Amendment Date: Jan 14, 2008
The purpose of this amendment is to update sections 2.3.4, 2.3.5 and 2.3.6.
Amendment Instructions:
1
2-1 and 2-2 Rev. 4.10 Amendment # 1 2-1 and 2-2 Rev. 4.10 Amendment # 3
2-3 and 2-4 Rev. 4.10 2-3 and 2-4 Rev. 4.10 Amendment # 3
2-5 Rev. 4.10 Amendment # 2 2-5 Rev. 4.10 Amendment # 3
Note: Ensure that all drawings are inserted in the order shown on the latest drawing lists.
Remove Pages Replace With Pages
2 Update the Amendment Record sheet at the front of the manual.
3 Insert this page into the manual after the Amendment Record sheet (page ii).
Manual Amendment ends after the following amended pages
Amendment # 3 Jan 14, 2008 Page 1
ENG-FORM: 809-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
INSTALL_OPS
MANUAL AMENDMENT
Manual: SM28 NTX066 Amendment #: 2
Document # SM28\Install_Ops\809-0002 Amendment Date: Jul 28, 2005
The purpose of this amendment is to update Section 2.0 with the Installation Approval
Test Procedure (NTX066\634-0).
Amendment Instructions:
1
2-5 Rev. 4.10 Amendment #1 2-5 Rev. 4.10 Amendment #2
2
NTX066\634-0 Rev. 1.00
Note: Ensure that all drawings are inserted in the order shown on the latest drawing lists.
3 Update the Amendment Record sheet at the front of the manual.
4 Insert this page into the manual after the Amendment Record sheet (page ii).
Manual Amendment ends after the following amended pages
Remove Pages Replace With Pages
Add Drawings (Section 2)
Amendment #2 Jul 28, 2005 Page 1
ENG-FORM: 809-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
INSTALL_OPS MANUAL
AMENDMENT
Manual: SM28 (NTX VHF-FM Transceivers) Amendment #: 1
Document # SM28\Install_Ops\809-0001 Amendment Date: Nov 19, 2004
The purpose of this amendment is to amend the cable and wiring specifications in line
with Transport Canada requirements.
Amendment Instructions:
1 Remove Pages Replace With Pages
2-2 Rev. 4.10 2-1 to 2-2 Rev. 4.10 Amendment 1
2 Update the Amendment Record sheet at the front of the manual.
3 Insert this page into the manual after the Amendment Record sheet (page ii).
Manual Amendment ends after the following amended pages
Amendment # 1 Nov 19, 2004 Page 1
ENG-FORM: 809-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
SM28 Rev. 4.10 NTX VHF-FM Series Remote Mount Transceivers Manual
IMPORTANT INFORMATION
FOR AVIONICS INSTALLATION FACILITIES
The NTX VHF-FM Series Remote Mount Transceivers are supplied
without TSO certification, as no such standard presently exists for
airborne VHF-FM radio transceivers. This equipment provides what is
considered as 'supplemental' communications, and can be installed in
an aircraft on a 'Non interference' basis. Installation should be
performed using standard procedures applicable to aircraft radio
installation, to ensure that the newly installed equipment does not
interfere with any other equipment in the aircraft.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the condition that this device does not cause harmful
interference.
Jun 1, 2004 Page iii
ENG-FORM: 820-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
SM28 Rev. 4.10 NTX VHF-FM Series Remote Mount Transceivers Manual
Table of Contents
Section Title Page
1 Description
1.1 Introduction 1-1
1.2 Purpose of Equipment 1-1
1.3 Features 1-1
1.4 Specifications 1-2
1.4.1 Electrical Specifications 1-2
1.4.2 Receiver 1-3
1.4.3 Transmitter 1-3
1.4.4 Physical Specifications 1-4
1.4.5 Environmental Specifications 1-4
1.5 VHF-FM Radio Spurious Frequencies 1-4
1.6 Unit Nomenclature 1-5
2 Installation
2.1 Introduction 2-1
2.2 Unpacking and Inspection 2-1
2.2.1 Warranty 2-1
2.3 Installation Procedures 2-1
2.3.1 Warnings 2-1
2.3.2 Cautions 2-2
2.3.3 Notes 2-2
2.3.4 Cable and Wiring 2-2
2.3.5 Antennas 2-3
2.3.6 Mechanical Mounting 2-3
2.3.7 Post-Installation Checks 2-4
2.3.8 Post-Installation EMI Test 2-4
2.4 Continued Airworthiness 2-5
2.5 Installation Drawings 2-5
3 Operation
3.1 Introduction 3-1
3.2 General 3-1
3.3 Configuration 3-1
Jun 1, 2004 Page iv
ENG-FORM: 820-0109.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
SM28 Rev. 4.10 NTX VHF-FM Series Remote Mount Transceivers Manual
Section 1 Description
1.1 Introduction
This manual contains information on the NTX VHF-FM Series Remote Mount
Transceivers. All derivative products will be covered by manual supplements, which can
be obtained from NAT as required.
Information in this section consists of purpose of equipment, features and specifications.
1.2 Purpose of Equipment
The NTX VHF-FM Series Remote Mount Transceivers are mounted using a custom 1/4
ATR tray and are operated using an NAT Tac/Com™ control head. The NTX066
models operate over 66 to 88 MHz on the VHF mid-band, and the NTX138 models are
capable of receiving and transmitting over 138 MHz to 174 MHz on the VHF high band.
Primary applications include airborne Search and Rescue, Law Enforcement and
Forestry communications.
1.3 Features
The existing Tac/Com™ series of control heads provide control for the transceivers.
The NTX066 range is 66.0000 to 87.9975 MHz, and the NTX138 VHF-FM models
cover a frequency range of 138.0000-173.9975 MHz, both in 2.5 kHz increments. A
maximum of 200 channels are available depending on the type of control head used.
Depending on the model selected, the channels can include a receive frequency and
CTCSS or DCS tone, transmit frequency and CTCSS or DCS tone, and an
alphanumeric identifier.
Depending on the model selected, the transceiver provides wideband or narrowband
receiver selectivity (selectable by the control head). Wideband operation provides a
bandwidth of 25 kHz and narrowband operation provides a bandwidth of 12.5 kHz.
The NTX138 transceiver can also be selected with an optional guard receiver installed or a
DF compatible output signal. The NTX138-100 provides a DF compatible output signal.
Voice Inversion Scrambling is available as an option, depending on the selected model.
A scan function allows scanning of selected channels. Transmit power of either 1 watt or 10
watts is selectable from the control head. Simplex and semi-duplex operations are available.
DTMF encoding and direct keyboard programming can be added using NAT's DTE12.
Jun 1, 2004 Page 1-1
ENG-FORM: 800-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
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