Carrier but no Voice SV-COM-C25

[tdavis1198]

No Audio(very low or even maybe garbled) during transmit, but good carrier. Used to work and then suddenly stopped.

The COM radio is connected to a PMA-8000B audio panel. COM1 (GTN750) works great so headset and PTT is ok. Swapped antennas with COM1, no difference, so antenna is not the problem.

Either something internal in the audio panel or its the SV-COM-425.

Anyone have any ideas?

 

[XPRSAV8R]

How are you monitoring transmissions? With a handheld? Radio check? Trying to understand who hears or what produces low audio. Or is this low audio in your headset?

For low audio reception, do you have a way to monitor current going into the 425 when you press the transmit button? You should see ~6A. Anything less is suspect of electrical wiring or circuit breaker.

For low audio in your headset, check your side tone setting in the SkyView configuration.

 

[Raymo]

Swap the inputs to the audio panel. If the problem moves with the wires, the audio panel is not the problem.