[Elecraft] KX3 number 493 received

[Holger Schurig]

The archive contains a answer to your computer interface question:

http://elecraft.365791.n2.nabble.com/KX3-and-Data-Mode-Interface-td7382234.html

TL;TD: try it with a direct cable. If you have hum, use isolation
transformers. If you need anything more fancy (e.g. PTT), you need
more, but maybe you can control PTT via serial commands or turn VOX on
in the KX3.