[Elecraft] bias battery box fromYamaha CM500

[Jim Brown]

On Sat,1/14/2017 6:57 PM, Jeff wrote:
> Does anyone have a spare, or unused bias battery box that came with your Yamaha CM500 headset? I desperately need one to use my headset with a radio other them my K3.

Sort of near the end of this set of slides are simple instructions for 
using ANY electret mic with any radio. You WILL need a soldering iron 
and a few connectors. And you will need to open the manual for that 
radio to find pin-out of the mic connector. Start with slide #168 and 
continue from there.

http://k9yc.com/GroundingAndAudio.pdf

73, Jim K9YC