Intercom - No MIC

M

mikemalone

I love flying!
Joined
May 12, 2017
Messages
36
I am in the process of installing and wiring the Intercom-2S.  Headphones appear to be working OK (I can hear the Dynon welcome message), but I can't hear myself on intercom when I talk through my Bose-A20 headsets, both on the pilot side and the co-pilot side.  I have two headsets, same problem on both.  What might be wrong?  I'm aware that there could be a multitude of possibilities.

Things I am aware of, and have checked are as follows:

Wired MICs to smaller diameter Jacks.
Checked all the wires run to correct -2S pins.
HP jack ground wires connect to each other then to -2S, Pin-1.
MIC grounds go to -2S Pin-2.
Shields connected together, daisy chain, and then to -2S, Pin-1.
I am aware of the 'Tip, Ring Barrel, architecture concept.

My wires are connected as follows:

Pilot HP: Tip to Pin-9, Ring to Pin-22, Barrel to Pin-1
Co-pilot HP: Tip to Pin-8, Ring to Pin-21, Barrel to Pin-1

Pilot MIC: Tip to Pin-23, Ring to Pin-10, Barrel to Pin-2
Co-pilot MIC: Tip to Pin-3, Ring to Pin-16, Barrel to Pin-2

I haven't connected up the PTT wiring yet.  I also need to check the continuity of each wire again. Am I missing something obvious?
 
Have you adjusted the SideTone % in the Com Radio Setup? If that doesn't work, our tech support folks suggest you call and the may be able to walk you through other items.
 
After further trouble shooting on this problem I can add the following:

While messing around with the connections to the MIC Jacks I noticed that when the push-on contacter, which is normally attached to the "Barrel" (Ground) also accidentally made contact with the "Tip" (Pilot MIC PTT), I could then hear myself on the intercom.  However, isn't this what should normally only happen when the two contacts are joined, say, when a PTT switch is closed in order to transmit on the radio? Very confused!
 
I've managed to somehow fix this problem. I think it all came down to the Squelch level, although I did remove some pins and re-insert them. I think I had set the Squelch level set too high. Only problem now is that I now don't hear the "Dynon Skyview" announcement when I switch the battery to ON.
 
Glad that you are making progress! You should next go to SYSTEM SETUP -> AUDIO SETUP -> BOOT SOUND -> ON. That might solve it.
 
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