You MUST use a stereo plug in the K2 key jack. A mono plug will short the 'ring'
connection to ground, which will key the rig. In HAND mode, either tip or ring will key
the K2 when grounded.
On 2/25/2013 7:15 PM, David Dietrich wrote:
Hello Don,
I hope you are well. You are a huge help to all of us in the Elecraft and QRP
community.
Do you have the plug from the CMOS4 wired correctly?
I believe so. I bought a 3' cable with RCA Male plugs on both ends, cut the cable in
half, and then soldered an 1/8" mono to the cut ends. I did make sure to wire the
center wire to the tip of the mono plug and the outer ground wire to the shell/lower
shaft of the mono plug. I am going to Ohm things out just to make sure.
My only other thought would be to use a stereo plug instead. If that is the case, I
might need to go to Radio Shack and get another cable and some stereo connectors this time.
Thanks & 73,
David
KC9EHQ
On Feb 25, 2013, at 07:59 PM, Don Wilhelm <[email protected]> wrote:
David,
Do you have the plug from the CMOS4 wired correctly?
There are only 2 lines to connect. The "hot" line should go to the tip and the ground
line from the CMOS4 should connect to the shell. No connection to the ring on the plug.
Be certain that the ground from the CMOS4 is wired to he shell of the plug.
Either wiring the ground from the CMOS4 to the tip or wiring to the tip and ring (rather
than the shell) will cause the behavior you have mentioned.
73,
Don W3FPR
On 2/25/2013 8:18 PM, David Dietrich wrote:
Please reply direct, as I use digest mode and may not get the reply until later.
Hi All,
I have a K2/10 and an Idiom Press CMOS4 keyer that I would like to use together. I have
everything connected properly, the K2 set to "Hand" for the input device, and the the
cables I made are properly fashioned and not shorted. HOWEVER, when I go to send (on
either side of my paddles) the K2 goes into total key-down, and the only way to stop it
is to turn the rig off OR disconnect the CMOS4. The CMOS4 doesn't seem to be
malfunctioning. When I just have paddles connected to the K2, and use the internal
keyer, everything works fine. Also, when I have the K2 set to "Hand" and the paddles
connected, everything works fine. I am not sure if the problem is with the CMOS4, K2,
or both. I know the CMOS4 works properly since I have been using it since 2008 on my
ICOM with nary a problem. Any ideas/input would be appreciated. If the problem is in
the CMOS4, I'll E-mail Rob at Idiom Press, but I figured that I would start here.
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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