[Elecraft] K2 Fast QSK

[Vic Rosenthal]

Don Rasmussen wrote:

> You can try shortening the t-r delay muting by
> reducing R17 in the Q6, Q7 mute circuit from 3.3M to
> something smaller. Try tacking another resistor of
> 3.3M across the existing R17 for example. 

> Has anyone else tried this, and come up with an
> optimal value that I might use as a starting point?

I have been using a 1 M resistor across the existing 3.3 M resistor. 
Any smaller value DEFINITELY causes a click.  I think this is probably 
about as aggressive as you want to get.

It does speed up the QSK, although I haven't tried to determine by how much.

73
Vic K2VCO