[Elecraft] Re: SB-221 for K3 need some help.

[Robert Mccormack]

The K3 will handle the open-frame relays in SB-220-type amps but open-frame relays will not close reliably within 20ms.

Some contest logging programs (CTWin for example) enable up to 250ms delay which is fine for most old amps, but don't attempt to use your paddle via the K3 internal keyer.

A work-around is an external keyer via the computer - for the casual operator, a foot-switch is highly recommended.

73, Ken ZL1AIH (@ZM1A in contests)