Jim,

I thought that too but what's puzzling is that the mic gets bias even with the 
mono adaptor in line.

Rick
K6LE

On 12/23/2009, at 9:11 , Jim Brown wrote:

> On Wed, 23 Dec 2009 16:56:44 -0800, K6LE wrote:
> 
>> It's a stereo plug 
> 
> No, it's not a "stereo" plug, it's a 3-circuit plug the CAN be used 
> for stereo, or can be used for other things like an electret mic. It 
> could also be used to carry shielded balanced audio wiring. 
> 
> With this mic, the tip is audio high, the sleeve is audio return and 
> cable shield, and the ring is +Vdc to power the tiny impedance 
> converter inside the mic. For more on this, see 

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