[Elecraft] External linear amplifier with CW

[Vic Rosenthal]

Fred Jensen wrote:

> I have the circuit from the Elecraft web site.  Unfortunately, my SB-220
> won't really do QSK.  Any ideas on how to modify the little perf board
> interface to put some (hopefully adjustable) delay in the release to
> simulate semi-QSK with VOX for the amp?

The perf-board circuit also uses 8r, and if you have '8r hold' enabled in the 
menu (the default in recent firmware), the delay will follow the t-r setting. 
The problem you may have will be with the attack, not the release.  The stock 
SB220 relay is quite slow and bouncy, so it might hot-switch when you start to 
talk or send.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco