[Elecraft] K3 external qro keying line

[Lee Buller]

HMMMM....  I thought the transistor on the K3 doing the switching is pretty tough.  I guess we are talking about older amps and not the ones that use 12 volts to switch.

I have done the following to....  Radio Shack sells a 5v reed relay that is pretty darn fast and has good specs.  I just used a dropping resistor from a 12 volt line in series with the reed relay and worked great for years.  I think I used a 180 ohm resistor.  Worked great.  Not QSK, but I don't like QSK anyway.  Messes with my head.  HI

Lee Buller - K0WA



In our day and age it seems that Common Sense is in short supply.  If you don't have any Common Sense - get some Common Sense and use it.  If you can't find any Common Sense, ask for help from somebody who has some Common Sense.  Is Common Sense divine?
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