[Elecraft] bias battery box fromYamaha CM500

[Jeff]

Thanks everyone for all the offers for the bias box, I now have one OTW. 
Jim, I was going to build one, it would certainly be simple enough. Try to 
find a suitable battery box that will have room for the mic pass through 
cables. I thank you for your always useful information.
  So I figured plenty of people would still have them laying around on a K3 
group. I lost mine I never had a use for during a move, or it's sitting in 
my summer home in NJ.

73 Jeff kb2m

-----Original Message----- 
From: Jim Brown
Sent: Sunday, January 15, 2017 1:47 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] bias battery box fromYamaha CM500

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