Aera 660 audio output to Trig TY91 VHF Radio

Looking for any wiring diagram info on wiring the audio output from a Aera 660 to a Trig TY 91 VHF radio.

This installation is using the Trig TY91 as the intercom with head phone jacks only

The 660 has three audio outputs LH, RH, Common.

The Trig TY91 has a single un-switched aux audio in pin.

Guessing at Common to Ground and LH audio to Aux audio in?

WA85 said:

Guessing at Common to Ground and LH audio to Aux audio in?

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This should work okay, unless the Aera puts out some info on the right channel only (?). Another option, to hear both channels, is to use a poor man’s mixer: connect the left channel to a 330 ohm (anything 200-400 ohms will work), do the same for the right channel, then tie the other end of both resistors together, and to the single aux input. Still common to ground, as before.

Yes, that will work. I connected the right channel, but the left will work just as well. If you use a shielded cable, connect the shield to ground at one end.

Thank you!