TY91/TY92 VHF Radio Installation Manual 24 November 2014
00839-00 Issue AF
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20 Trig Avionics Limited
adapters. The controller should be mounted using the four SHORT screws
provided. The screws supplied are appropriate for panel thicknesses from 3
mm to 5 mm. If a thinner panel is used, you may need to exchange the screws
for shorter versions since they can bottom out in the mounting holes.
If alternate screws are required, please note that the mounting thread in each
case is 4-40.
5.2.1 Dual TC90 Considerations
If you are installing a second TC90 controller then it must also meet the
mounting requirements as stated above.
Both TC90 controllers will need to be wired to the TY91/TY92 remote radio
unit. Consideration should be given to the routing of the additional wires as
this may impact on the overall panel placement of the TC90 controllers.
5.3 VHF Radio Main Unit Mounting
The TY91/TY92 VHF radio is designed to be mounted in any convenient
location in the cockpit, the cabin, or an avionics bay.
The following installation procedure should be followed, remembering to allow
adequate space for installation of cables and connectors.
Select a position in the aircraft that is not too close to any high
external heat source. (The TY91/TY92 can become warm to the
touch itself).
Avoid sharp bends and placing the cables too near to the aircraft
control cables.
Secure the mounting tray (p/n 00667-00) to the aircraft via the three
(3) mounting holes in the tray. The tray should be mounted to a flat
surface - it is important that the tray is supported at the two dimples as
well as the three mounting points.
Put the TY91/TY92 VHF radio into the secured mounting tray by
hooking the connector end under the lip on the tray.
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