[Elecraft] KPA100 > Heath SB-200 full break-in?

[Steven Gibbs]

[QRP diehards please avert your eyes ...]

I'd like to convert my Heathkit SB-200 linear amplifier
(two 572Bs) to full relayless QSK break-in using the
switching available at the KPA100 J7 phono socket
(PA KEY OUT).

A beefed-up version of the switching circuit used in the
KPA100 might do the job nicely.  Has anyone any thoughts,
experience, or leads to where information is available?

I've invested in new tubes and a Harbach HV board so
I'd like to give my SB-200 a further lease of life.

This is a little off-topic, so please reply by direct
email.

Tks & 73, Steve GU3MBS.