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GNC 355 Feedback

h&jeuropa

Well Known Member
I've just started flying my new GNC 355 GPS Comm. I also have a GMA240 audio panel which is what I use for intercom, although the GNC comm audio goes thru it too. I have a couple setup questions:

Twice while transmitting, I have gotten what sounds like loud feedback in my headset. It happens when I key the mic and I can hear myself talking but very loud and with a whistle like feedback. It has happened twice and after trying lots of stuff (I was trying anything to get rid of the noise and don't know exactly what worked or changed), it fixed itself. I think I ended up on a different frequency.

I don't understand sidetone volume offset and Link to Com Volume as described in the manual.

Anyone got suggestions or experience?

Thanks

Jim Butcher
 
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