I went back and re-read you article. I had made a setup for my KX3 a few years 
back and couldn’t remember all of the details. Thanks for reposting!!

BTW, Lyle’s article you mention, the link is dead. It was a great resource if 
you can find it again!

Thanks,
Hank
K4HYJ


> On May 17, 2023, at 12:07 AM, Walter Underwood <wun...@wunderwood.org> wrote:
> The mic bias is +3.3 V on the tip. On the KX3, there is also a logic level 
> DC voltage on the ring. This is not as clean as the mic bias and can cause 
> some noise on mics that short those. You can split out those signals with a 
> TRS plug or a stereo-to-mono splitter. See this blog post (from me) for 
> details.
> 
> https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/
> 
> Phantom power for studio mics is quite different.
> 
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
> 
>> On May 16, 2023, at 6:40 PM, Alan Geller via Elecraft 
>> <elecraft@mailman.qth.net> wrote:
>> 
>> Is what Elecraft calls mike “bias” in the K3 and K3s Owners handbooks 
>> Equivalent to the “48 volt ghost voltage” required for condenser mikes et al
>> In the broadcast and music industry ?
>> 
>> It is mentioned that “mike bias” needs to to be turned on for condenser type 
>> mikes
>> But off for dynamic types which is also equivalent for the more common 
>> Term  “48 volt ghost voltage”
>> 
>> Thanks for any help
>> 
>> Alan/K6ADG
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