User's Manual

TY91/TY92 VHF Radio Installation Manual 11 April 2012
00839-00 Issue AA
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34 Trig Avionics Limited
7. Post Installation Checks
Post installation checks should be carried out in accordance with your
certification requirements. These checks should include:
 Receiver operation. Tune a local station and check that the reception
is clear and understandable.
 Transmitter operation. Contact a local station and check that they are
receiving you successfully.
 Interference check. Check the radio with other avionics and electrical
equipment on the aircraft operating. Check at low, mid and high radio
frequencies. There should be no significant interference on reception,
and when the TY91/TY92 transmits there should be no adverse effect
on any other equipment.
 Sidetone adjustment. During the transmit checks, verify the sidetone
level is set appropriately.
 Intercom adjustment. If the intercom function is being used, set the
listening level and squelch appropriately. Note that setting the
squelch is only normally possible with the engine(s) running and
developing power.