[Elecraft] 8R hold question

[Vic K2VCO]

Larry Clark wrote:
> Hi,
> 
> The K2 manual says to use "8R hold" to "improve"
> amplifier keying.  It appears that this is to prevent
> a mechanical relay in an amp from cycling too
> frequently with the K2's QSK.  Is 8R hold necessary
> with PIN diode switched amps like the Alpha?  Enabling
> 8R hold in my K2 introduces a slight popping into the
> T-R switching as the rig returns to receive. This
> degrades the otherwise nearly flawless break-in.  It
> would certainly be preferable to leave 8R in the
> normal setting if this does not introduce keying
> problems.

There's no mechanical relay in the t/r path.  You don't need to use 8R 
hold with an Alpha -- I used it both ways with an Alpha 86 that was pin 
diode switched. There's enough delay built into the amplifier keying 
circuit.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco