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737NG microphone bias voltage

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737NG microphone bias voltage

Old 2nd Jan 2021, 02:10
  #1 (permalink)  
Thread Starter
Join Date: Oct 2013
Location: Panama
Posts: 2
737NG microphone bias voltage

So im looking at using a modmic (typically used for PC gaming), together with a WYZE noise cancelling headset. My issue is with the DC voltage bias for the mic. the modmic can accept up to 12v.

What is the DC voltage bias for the 737NG?
seb62085 is offline  
Old 2nd Jan 2021, 14:43
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Join Date: Sep 2011
Location: FL390
Posts: 81
I think you're asking for trouble if you use anything other than equipment approved by your airline or Boeing.
Fursty Ferret is offline  
Old 2nd Jan 2021, 19:56
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Join Date: Oct 2013
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Our airline does not approve anything.. nor does boeing for that matter. Ill be fine
seb62085 is offline  
Old 3rd Jan 2021, 12:49
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Join Date: Nov 1999
Location: UK
Posts: 1,534
I don't know the answer, which doesn't help you. However, phantom power for microphones can be as high as 48V, so be cautious. Perhaps you could take a voltmeter with you and simply measure the voltage across the microphone pins of the headset connector.

But I would heed Fursty Ferret's warning - the last thing you need is smoke in the cockpit or a loss of communications through using non-approved home made equipment
Uplinker is offline  

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