[Elecraft] K3 microphone MFJ297

[Don Wilhelm]

I just looked at the manual for that microphone, and found it is an 
electret (condenser) type - which means it needs bias to operate.

Problem is that the listing on mic pins shows +8 volts separately - 
which means that the voltage required to bias the mic element is likely 
wired to the pin designated as +8 volts rather than being derived from a 
voltage on the AF input.

Bottom line - in this case, the Kenwood adapter will not work because it 
expects the +8 volts to be on pin 5, but the Elecraft mic pinout puts +8 
volts on pin 6.

You may be able to use that mic if you are willing to alter the wiring 
of the Kenwood adapter to swap the wires to pins 5 and 6 in the adapter.

73,
Don W3FPR

Greenacres113 at aol.com wrote:
> I am getting ready to order a K3. Not much of a  phone operator. I use an MFJ 
> 297 desk mike because  they offered different  cables that matched 
> Kenwood,Icom & Yaesu.  I think the Kenwood might  match the K3. Anyone tell me if this 
> is correct? Rather put new microphone $$$  toward another CW filter.
> K9IL  
>   
>