[Elecraft] K3 Locks up in Transmit in data mode.

[Stewart Bryant]

Hi

This is probably finger trouble, but I cannot see
what the problem is, so I wonder if anyone
knows what is going on.

I have a K3, Sigalink and HRD/DM780.

For voice and CW including using the winkeyer all
works fine including CAT.

However I get a transmit lockup in data mode.

I am using vox from the Sigalink to control the K3 PTT.

I have K3 power turned to zero.

I set the K3 in data mode and send some data and all is well
relays go over tries to send some data goes back to receive.

If I plug in the RS232 cable and send some data all works
well, the Sigalink drops PTT, buy the K3 locks in
transmit and will not come out of transmit until I power
cycle the K3. Removing the RS232 cable has no effect unless
I power cycle the K3.

Removing the RS232 cable and all works exactly as expected.

I have configured ptt to off-off.

Does anyone have any idea what I am doing wrong here?

Many thanks

Stewart/G3YSX