[Elecraft] Is it possible to connect a amp to the K2

[Eric Swartz - WA6HHQ, Elecraft]

The K2/100 already includes a high voltage output keying line for linear 
amplifiers on its KPA100 back panel. It can handle up to 200V and 1A 
max. Most amps with -positive- keying voltages can be T/R keyed from the 
K2/100.

I think the SB-220 uses a positive voltage so it should work.

The few amps with negative keying voltages will need a relay or solid 
state buffer between the amp and the rig.

See page 59 of the KPA100 manual for the key out line specification, and 
page 53 for the 8R Hold menu option that provides a keyout hold feature 
to prevent amplifier relay chatter on CW.

73, Eric  WA6HHQ
Elecraft

Todd Gahagan wrote:
> I would really be interested in this also Tom.  Been going to  drive my 
> SB220 with the KPA-100, K-2 combo for some time.