[Elecraft] KX3 stopped answering to serial commands

[Holger Schurig]

Hi,

I have a KX3 with Firmware 02.33. When I put the orginal Elecraft USB->ACC1
Plug into the device, then programs like kx3util, fldigi, rigctl (from
hamlib) and even a terminal won't work.

Actually, this is not totally true. When I turn AUTO INF to "riG Ctrl" in
the menu, then I see various frequency change settings. So I know that the
KX3 can send and my computer can receive. And that the baudrate is correct.

Also, when I enter "ID;" in a terminal program, I will get the echo "ID;",
but not the response "IDnnn;". When I remove the plug from AC1, I won't get
the echo. So I think the "ID;" is really sent from the KX3, so somehow the
KX3 can still receive and echo. It just doesn't honor any commands.


Any idea on how I could fix that?  Or what I might do wrong?




Holger, DH3HS