[Elecraft] K2 and Yamaha CM500 headset

[Jim Brown]

On 11/17/2011 1:31 PM, Robert G. Strickland wrote:
> Does anyone have any experience using the Yamaha CM500 headset with the
> K2? Thanks for comments.

It should work quite well. The K2 is a bit low on audio gain, and the 
CM500 is a very hot mic, which compensates nicely.  You will need to 
make a simple cable adapter (female 1/8-in jack to a mic connector that 
fits the K2), and you need a 5.6K resistor between +8V on the K2 mic 
jack and the mic input. Find a tiny resistor (1/10 watt) and it will fit 
in the connector that plugs into the K2.

73, Jim Brown K9YC