[Elecraft] K3 Microphones

[Lyle Johnson]

> Why does only certain microphones operate the VOX properly? I have the most recent firmware (downloaded yesterday) installed.

If the MIC GAIN is set such that you are getting 4 to 5 bars of ALC, the 
VOX should work consistently.  At least, it has in my testing with three 
different dynamic mics and two different electret mics, as well as the 
LINE OUT from my PC.

It may be that you have enough audio drive from your dynamic mic to 
adequately drive the transmitter but not enough to get 4 to 5 bars of 
ALC, in which case the VOX is being under-driven (or perhaps the 
anti-VOX is being over-driven).

If this is not your problem, please email k3support and they may have 
further insights for you.

73,

Lyle KK7P