[Elecraft] KX3: CM500 best price/use with

[Walter Underwood]

The mic bias is cleaner than the logic bias. It is also the right level. I got more mic output with the mic bias. 

I got that info from Lyle, KK7P, on this list. He is credited in my blog post. Did you read that? I wrote it because I got tired of reexplaining it on this list. :-)

https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/

Here is Kyle’s original e-mail about that.

https://groups.yahoo.com/neo/groups/KX3/conversations/topics/9556

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Nov 10, 2017, at 12:36 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:
> 
> Walter,
> 
> When using any computer type mic (the CM500 is wired like one), turn the MIC BIAS off, the audio will be cleaner.  The bias voltage then uses the residual voltage that is developed on the ring connection.
> The reason that works is because the computer mics have the tip and ring connected together.
> 
> On 11/10/2017 3:21 PM, Walter Underwood wrote:
>> You can plug the CM500 mic straight in to the KX3. You need to disable the mic button and make sure mic bias is on.