K3 QSY using mic jack

[Tony - KM0O]

I'd like to build a little QSY switch box that will sit on the table next to my keyboard. My question is: exactly what do pins 3 and 4 of the mic jack need to "see" in order to perform their function? I think it is more than just a simple closure to ground, but I'm not finding the info anywhere. Can anyone help?

Thanks,
Tony / KM0O

[Dave, G4AON]

I've just checked my Kenwood MC-43S which I use with my K3 - the "UP"
and "DWN" buttons ground pins 3 and 4 when pressed.

73 Dave, G4AON
K3/100 #80
----------------

I'd like to build a little QSY switch box that will sit on the table next to
my keyboard. My question is: exactly what do pins 3 and 4 of the mic jack
need to "see" in order to perform their function? I think it is more than
just a simple closure to ground, but I'm not finding the info anywhere. Can
anyone help?

Thanks,
Tony / KM0O
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com