Gene,
You *must* use a stereo plug in the K2 paddle jack no matter whether you
are using a straight key or paddles. If using a straight key (or
computer keying) connect only to the tip and to the shell of the plug.
That is true when using a direct connection, and not necessarily Auto
Detect.
Auto Detect will allow you to use paddles in conjunction with a straight
key (or computer keying), and requires two diodes. See page 99 of the
K2 Owner's Manual (download it from www.elecraft.com if you do not have
a paper copy). It will work more reliably if you use Shottky diodes
such as 1N5711 which have a lower forward voltage. You must turn Auto
Detect ON to use it. Go to the INP menu, edit the parameter and tap
DISPLAY to toggle ADET on or off. With ADET set to ON, you should be
able to key the K2 from the straight key (or computer) even though the
INP menu is set to PDLn or PDLr.
73,
Don W3FPR
On 9/18/2014 7:19 PM, Gene N4FZ wrote:
Thanks Matt, very much, I had that sinking feeling. Auto detect doesn't work
then I guess. I bought this K2 second hand, nice little rig. Had it over two
years now. Normally use the BY-1 paddles. 73 Gene
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