[Elecraft] Dave Clark Microphone

[Roger Steyaert, K7RXV]

Rob

The David Clark aircraft headset or any mike for aircraft use are 
designed to work the same as carbon mikes. The pin out is sleeve ground, 
Ring mike audio, and Tip key. They use the carbon mike bias to power an 
internal amplifier. the output is way to high for use with a ham rig of 
any kind.

Ex aircraft electronic systems engineer.

Roger Steyaert, K7RXV

Don Wilhelm wrote:
> Rob,
> 
> If you can tell us what the functions of 3 wires are, then we should be able
> to tell you how to connect it.
> Pure speculation tells me that one is AF, another is ground and the third
> may be either the voltage feed to the electret element or it may be the
> audio to the headphone section, or it could be a PTT wire - but that is
> strictly a guess based on my assumption of whatever might be included in the
> set of 3.  In other words, a SWAG.
> 
> If the element is truly an electret type, it will likely work with the K2
> just fine.
> 
> 73,
> Don W3FPR
> 
>> -----Original Message-----
>>
>> I have a query for the group. I am a pilot and have several Dave
>> Clark H13.4 headsets with noise-cancelling electret microphones
>> that terminate in a 3-wire connector. Can these microphones be
>> configured to work with the K2?
>> Rob
>> KC6ROC  K2 #5924 in progress
>>
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