TN910 Codan MT-3 and IFR COM-120 Test Procedures
MT-3 Radio Systems
TECHNICAL NOTES
TN910 Rev 5-0-0 May 14Page 2 of 16
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Victoria, B.C.
Canada V8V 1P8
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Phone: 1-800-664-4066
Fax: 1-877-750-0004
International
Phone: 250-382-8268
Fax: 250-382-6139
Internet
Email: LMRsales@codanradio.com
Web: www.codanradio.com
Table of Contents
General Set-Up and Connections ............................................................................. Page 3
System Regulator Testing
System Voltage Testing .................................................................................................. Page 4
Receiver Testing
Set-Up ............................................................................................................................ Page 5
Distortion ........................................................................................................................ Page 6
Sensitivity (12 dB SINAD) ............................................................................................... Page 6
Squelch ........................................................................................................................... Page 6
Receiver and Auxiliary (AC-3E) Output Audio Levels ..................................................... Page 7
CTCSS Decode .............................................................................................................. Page 8
Receiver Front End Alignment and Tuning ..................................................................... Page 9
Transmitter Testing
Set-Up ............................................................................................................................ Page 10
Distortion ........................................................................................................................ Page 12
RF Power ........................................................................................................................ Page 12
Frequency Stability ......................................................................................................... Page 12
Transmitter Deviation Levels .......................................................................................... Page 12
Auxiliary (AC-3E) Input Audio Levels .............................................................................. Page 13
CTCSS Encode .............................................................................................................. Page 13
Duplex Testing
Set-Up ............................................................................................................................ Page 14
Distortion ........................................................................................................................ Page 15
Repeater Deviation Levels ............................................................................................. Page 15
Important Information
This Technical Note is intended as an aid to confi guring and testing Codan radios using an IFR COM-120 (B or C)
Service Monitor by Aerofl ex. Neither Codan Limited or Aerofl ex Inc. assume responsibility for damage caused to
either unit as a result of misinterpretation or misuse of this procedure. Codan manufactured Products are warranted
against defective materials and workmanship. This warranty does not extend to damage due to misuse, neglect,
accident, improper confi guration or installation. Codan and Aerofl ex shall be released from all obligations under
its respective warranty in the event the Products are subject to misuse, neglect, alteration, accident, improper
installation or testing, or if un-authorized repairs are performed by the Customer or others. These procedures can
be modifi ed, changed and altered at any time to better suit your specifi c needs and requirements.
This product has been discontinued and is no longer manufactured by Codan Radio Communications
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