[Elecraft] KX3/fldigi/USB sound card

[Don Wilhelm]

Wunder,

PTT via CAT command does not require any extra wiring, it uses the 
RS-232 control cable to provide the command listed in the K3/KX3 
Programmer's Reference to activate Transmit.  It works well with the K2, 
K3/K3S, KX3 and KX2.

Quite different than using the 'one transistor keying device' on the DTR 
or RTS signal lines.

I use PTT via CAT command successfully on all my Elecraft rigs, and no 
other wiring is required.

Yes, you can use VOX on the K3/K3S, KX3 and KX2.  The VOX on the K2 will 
not provide reliable transmit triggering.

73,
Don W3FPR

On 7/8/2018 5:22 PM, Walter Underwood wrote:
> You can use VOX instead of wiring up some sort of PTT or using CAT PTT.
>