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4O3A NC-1 headset direct into Flex6400 doesn't work


Tried to use this headset with my Flex6400, but get no audio into Flex. Bias was set on in SmartSDR.

My previous headsets has jackplug 3.5mm with two rings. This one has three. Would this given problems for working? You would expect that 4O3A has thought about this. Or maybe I'm overlooking something?


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