[Elecraft] K2 - Strange Problem !!

[Stewart Baker]

Just when you think you have seen everything, something comes along and bites 
you in the b*m.

Having completed yet another mod to my K2, I put it back into it's rightful 
place on the operating desk, connected the KAT100/KPA100, PSU, desk microphone, 
computer leads, and then switched on.

The K2 was set to 40m and I could hear signals, but also I was getting audio 
feedback from my microphone and this was on RECEIVE !
Thinking that something had not powered up correctly, I powered the K2 off then 
on - still the same problem. Must be some Menu setting that I had forgotten, so 
press the Menu button - nothing changes on the display - What the *!&*$ ?
NONE of the secondary functions of the front panel work. What have I blown up ?

Decided to take the K2 cover off and see what I had messed up with the latest 
mod. Removed the K2 from the back of the operating desk, and started to 
disconnect all attached cables.

Then I found it..... Instead of plugging in the 3.5mm plug on the foot switch 
into the Key socket  I had plugged in the 3.5mm plug from the soundcard !!

Everything works fine now the correct plugs are in the correct sockets.

You live and learn...

73
Stewart G3RXQ