[Elecraft] Microphones for K2/3

[Geoffrey Mackenzie-Kennedy]

Never had a problem John getting full rated PEP output from K2/100 #3255 
using the HC-4 and HC-5 elements in the Heil ProSet Plus headset without an 
external preamp, but I don't use the K2/100's VOX. If I used VOX a little 
more audio gain would be required in the VOX circuit, but additional audio 
gain between the mic elements and modulator would result in overdrive. 
Perhaps my K2/100 is a positive tolerance version.

73,
Geoff
GM4ESD


John R. Lonigro <johnlon at sbcglobal.net> wrote:

> John and Charles:
> The Heil Prosets with the HC-4 or HC-5 elements don't have quite enough 
> output to drive the K2 without either an external preamp or tweaking of 
> the K2's internal circuitry.  The version with the electret element seems 
> to work better with the K2.  I believe the Heil K2 Proset is essentially 
> the version with the electret element, but I'm not 100% certain on that 
> matter.
>
> All Prosets require an adapter to match your particular mic jack 
> configuration, so that is not a factor.
>
> No idea about the K3.
>
> 73's,
> John AA0VE