[Elecraft] bias for Yamaha CM-500

[Jim Brown]

On Sat, 16 Jan 2010 23:20:27 -0600, David Christ wrote:

>I'm trying to understand the bias requirements for the CM-500 
>specifically and electret/condenser (which is it) mikes in general.

Go back and read the post I made two days ago on this topic. It 
tells you EXACTLY what to do. In short, tip to mic input, ring to 8V 
through a resistor in the 5K to 10K range. If you want to know more, 
see http://audiosystemsgroup.com/HamInterfacing.pdf  

and the tutorial on audio in an appendix of 

http://audiosystemsgroup.com/RFI-Ham.pdf

73,

Jim K9YC