Intercom - No MIC

[mikemalone]

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?

 

[RobertHamilton]

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.

 

[mikemalone]

Hi Dynon. Do you have a telephone number. I’m in the UK.

 

[RobertHamilton]

+1 425 dash 402 dash 0433 and ask for Tech Support.

 

[mikemalone]

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!

 

[mikemalone]

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.

 

[RobertHamilton]

Glad that you are making progress! You should next go to SYSTEM SETUP -> AUDIO SETUP -> BOOT SOUND -> ON. That might solve it.