heil pro 7 electret microphone

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  • Question
  • Updated 3 years ago
  • Answered
Is anyone using a Heil Pro 7 with the electret element and the Flex 6500. I am using the AD-1-Y cable and turned on bias. I get no microphone input.  I measured pin 2 on the mic connector and it shows 4.9 volts with the bias setting both on and off!!!  
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Dave - WB5NHL

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Posted 3 years ago

  • 2
Photo of Dave - WB5NHL

Dave - WB5NHL

  • 285 Posts
  • 64 Reply Likes
Official Response
Nailed it down.....  Problem with bias source.   A friend measured his bias voltage with the element installed as 1.57v    Trouble ticket here I come.