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PTT, 430W, and Audio Panel

crxcte

By crxcte
in Avionics/Panel Discussion

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crxcte Community Regular

crxcte

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Posted

Needs some help checking an intermittent PTT failure.

 

My configuration is a Narco CP 136 Audio panel, Com 1 is a 430W, Com 2 is a Garmin GNC 250 Nav/Com.

My question is on the audio panel has one Mic Jack Key in, does both Coms feed the the same Mic Jack Key in?  

Com1 I have Mic Key In tied to Com2 Transmit Interlock then an isloation diode before connected to the Audio Mic Key In

Com2, I have Mic Key In tied to Com1 Transmit Interlock then an isloation diode before connected to the Audio Mic Key In

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