[Elecraft] How to wire KX3 to an Amp

[Don Wilhelm]

John,

The Key Out signal is on the ring contact of the ACC2 jack.  You will 
need a 2.5mm stereo plug.  Of course the shell is common, and the tip is 
the GPIO - see page 5 of the KX3 manual.

If you have both the KPA500 and KAT500, the Key Out signal must connect 
to one of the AMP KEY jacks on the KAT500 first, and then use an RCA TO 
RCA cable to connect from the KAT500 to the KPA500 Key IN jack.

73,
Don W3FPR

On 12/20/2018 3:18 PM, John Pierce wrote:
> I recently purchased a KPA500 with the cable to connect to the KX3.   Can
> someone tell me where the plugs on cable that connects the  KPA100 amp plug
> into the KX3?  I have been told that that cable can be used to connect to
> the KPA500 without the frequency control.
>