I've noticed a similar inconvenience. The problem for me is that Tune will
not activate if PTT is asserted at the rear panel. In my station I don't
have the amp hooked up to the Key Out of the radio. I have a foot switch
that asserts PTT to the K3, puts the amp in transmit, and switches the T/R
relays. Hit the foot switch and Tune won't do anything. I work around it by
using CW mode and a straight key.

Your problem may be that Tune does not assert Key Out, but I've never
checked into that. I'll find out soon because I'm working on a faster T/R
switch with electronic amp bias control so that Key Out controls everything.
Then I can get rid of the foot switch.

73 & thanks for listening
Carl WS7L
K3 #486, one year old and still making Dad very happy.

> -----Original Message-----
> 
> I'm trying to setup my K3 to tune my tube amp. I have TUN PWR 
> set to 25 watts. when I long press the tune button the K3 
> goes into transmit at the selected 25 watts, in CW mode, but 
> the amp doesn't key. If I press the PTT on the mic the amp 
> goes into tx. 
> ...
> 73 Jeff kb2m

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