[Elecraft] K3 and SB220

[David Robertson]

To all.

Concerning using the K3 with an unmodified SB220.

Yes there is a protection diode in the K3, but consider this;

Would you put a >1000 volt spike into the key jack of a radio that cost you >$2000.

I would rather eliminate the spike be installing a very cheap 1N4007 or equivalent diode acrossed the SB 220 relay coil instead of putting the strain on my K3 components.

Think about it.

73
Dave
KD1NA