[Elecraft] K3: Spkrs/Phones switch - cool undocumented(?) feature

[Leigh L. Klotz, Jr WA5ZNU]

I programmed PF2 (XIT) to select the MIC SEL menu, so it makes a nice 
pair with RIT being SPKR.

Leigh/WA5ZNU
> ...when I hold the PF1 switch it actually TOGGLES between the two 
> options (Spkrs on/off ) EXACTLY like you would want it to! 
>
...
> 73, Barry, K6RM
>
>