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Old May 18th 18, 06:26 PM posted to rec.aviation.soaring
OHM Ω http://aviation.derosaweb.net
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Default Dittel Speaker Box

Uli,

You mention, "It working after taking the box off the mount points to the connectors." and that you have carrier without any audio. I would suspect either the microphone, the mic wiring (in/out of the speaker box), or the mic connectors (male and female) at the Dittel box. Especially the connectors.

If this is actually a Becker box then you can look at the Becker 4201 manual on page 2-8. See https://www.cumulus-soaring.com/beck...201-Manual.pdf

Finally, I created a troubleshooting guide that MIGHT (maybe kinda) help you. I just added a section on the Dittel/Becker boxes. See http://aviation.derosaweb.net/presen...leshooting.pdf

Best of Luck, John