User's Manual

TY91/TY92 VHF Radio Installation Manual 11 April 2012
00839-00 Issue AA
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Trig Avionics Limited 7
2. Introduction
2.1 TY91/TY92 Description
The TY91/TY92 VHF radio system is an ED-23C compliant class C (25 kHz
offset carrier) and class E (8.33 kHz single carrier) VHF radio. The TY91 has
a nominal power output of 6 watts, and meets the power output requirements
for Class 4 and Class 6. The TY92 has a nominal power output of 16 watts,
and meet the power output requirements for Class 3 and Class 5. The
TY91/TY92 is certified to ETSO 2C169a 2C128a, TSO C169a and TSO
C128a.
The TY91 and TY92 VHF radios are controlled using a separate front panel
controller, called the TC90. This allows the radio to be mounted separately
from the instrument panel, and reduces the amount of panel space taken by the
VHF radio. The TC90 is certified to ETSO 2C169a, and TSO C169a.
The TY91 runs from either 14 volt nominal or 28 volt nominal DC power
supply with no configuration changes required. The TY92 requires 28 volt
nominal supply.
2.2 Interfaces
2.2.1 TY91/TY92 VHF radio Unit
The main VHF radio unit has a single TNC antenna connection and a single 25
way D-type connector. The 25 way D-type interface provides the following
services:
Power Input
The TY91 operates on 11 to 33 volts DC. The TY92
operates on 22 to 33 volts DC.
Front Panel Datalink
A two wire data link is used to connect the TY91/TY92
and the controller.
Front Panel Power
The controller is powered from the VHF radio.