[Elecraft] Key Out jack

[Don Wilhelm]

Skip,

Yes, it does follow the keying when in QSK.  If it did not, the KPA500 
would not follow the K3(s) in QSK mode (the KPA500 connection uses the 
KEYOUT-LP from the ACC connector).
The T/R switching is all electronic and can be quite fast.

If the amplifier uses relay switching, the relay may not be able to 
follow the K3(S).

73,
Don W3FPR

On 10/13/2017 6:02 PM, Fred Jensen wrote:
> Related question:  Does KEY OUT essentially follow the TX state?  IAW, 
> if PTT or VOX is asserted, it also asserts?  If so, I guess that means 
> that it follows the keying when in QSK?  It's a real PITA to get to the 
> back of my K3 right now or I'd check it myself.
>