[Elecraft] K3 Heil Adapter, which one?

[Joe Subich, W4TV]

Eric wrote: 

> I think the confusion on this issue arose when people started 
> trying to use microphones that Kenwood sells on its VHF/UHF radios, 
> some of which are of the electret variety and require power/bias 
> on a separate pin.  

Actually, it is not the VHF/UHF ("encoder") mics that are generally 
the issue.  The real problem is with the HF "desk" mics (MC-55, 
MC-60A, MC-80, & MC-85) that use pin 5 to power a preamplifier or 
bias the electret capsule.  MC-55, 80 and 85 use electret capsules 
and require power on "pin 5" or the use of batteries.  The MC-60A 
is a dynamic mic that will work with the K2/K3 as long as the 
preamplifier is bypassed (preamp switch "off").  The MC-90 - a 
dynamic desk mic with no preamp - works without modification.  

73, 

   ... Joe, W4TV