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Narco MK12D transmit prob.

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Joined
Mar 22, 2017
Messages
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I have Narco MK12D Nav/com and Narco CP136 Audio Panel .
The MK12D receives, but is not transmitting. When “push to talk” is activated, the transmit light is visible,
but my radio calls are not received. The other Com transmits and receives normally.
Could the problem be in the audio panel or the MK12D? Any recommendations?
Thank you.
 

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