[Heathkit] Amp Keying

[Dennis Berry]

I'm sure someone knows this.  What current does the relay need in the SB-200 and SB-220?  With all the discussion, it would be interesting to know if someone has measured the current requirements of the relays, as I'm sure someone has?

Also, the solid state relays have been mentioned.  I've not used one.  Do these behave like regular relays so that the difference in voltages (DC, negative switching on the SB200, positive on the SB220) will make no difference to the relay?  It acts just like a contactor?

Thanks in advance...

dennis