[Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN)

[Edwin Johnson]

> When operating, I plugged the mic and headset into the rear panel
> connectors, turned on the bias (tap 2 on the keypad while in the mic
> select menu) and set mic gain to Low (tap 1 on the keypad in the mic
> select menu). I used max cut of the two lowest bands on the K3 to
~
> Jim K9YC

I'm interested in why you turned _on_ the bias. When I look at the Yamaha it 
says this is a 'sensitive dynamic microphone', impedance 600 ohms. You do not 
use bias with a dynamic microphone. If an electret (condenser mic), yes, the 
bias is a must and generally used to power the internal preamp.

So, is this, indeed, an electret or a dynamic microphone?

73 ...Edwin, KD5ZLB
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