"Rule of thumb" - if the microphone produces any audio at all with no bias, it should be run with no bias - it is a dynamic type. Electret elements will not produce any audio at all unless bias is turned on.

73,
Don W3FPR

On 4/18/2017 12:27 AM, Matt Zilmer wrote:
Thanks, Jim. The gain setting just has to be set to HIGH. Bias off. I checked my settings here for the first time in almost seven years.

You got me on that. I was thinking of the CM500 headset.  Bah.
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