[Elecraft] Yamaha CM500 Headset and Heil Adaptor

[Don Wilhelm]

Bruce,

Unless Heil has changed the Kenwood adapter, it should work fine.
Test your adapter - put a bare stereo plug into the adapter and use your 
DMM.  Pin 1 should connect to the tip of the stereo plug.  The shell of 
the stereo plug should connect to either pin 7 or pin 8 (or both) and 
the ring of the stereo plug should connect to either nothing or to pin 1 
(but *not* connect to either pin 7 or pin 8).

If those tests are OK, it should work - set the Mic Sel menu to FPL.bias 
and adjust the mic gain to indicate 5 to 7 bars on the ALC meter.

73,
Don W3FPR

On 12/24/2014 5:36 AM, Bruce & Gab wrote:
> Recently purchased a Yamaha CM500 headset with a Heil AD-1-K headset adaptor
> for Kenwood (the red one).  I love the headset, much cheaper than the Heil
> and performs about the same, IMHO.
>
> The only way I managed to get the mic to work was through the rear jack
> (yes, the mic was selected to front panel).
>
> I did read in previous threads referring to mono and stereo mic connection.
>
>
> Do I need to replace the stereo mic connector on the headset with a mono?
>
> Is there a trick with the adaptor or am I messing up the set-up?
>