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EC95 microphone compatibility

What is the expectation regarding microphone compatibility? I have tried 5 different microphones and the only one that works is a very expensive SHURE XLR microphone with a converter cable. i have tried a half dozen microphones and none of them have audio on the other end of the call. it’s only the SHURE that is working and that is not an option. for the production units. What is the tip expected? Specific impedance specifications? Can you give me a list of microphones that have been tested internally? Also, this is a Pi HAT implementation that RakWireless has done.

Please confirm your module model first, there should be no ec95 module in quectel .
Best wishes