Ben Hofmann K1NT wrote:
I am experiencing key clicks on the sidetone with my
K2 and newly installed KPA100. They occur only when
power is >10w regardless of whether in test or operate
mode, and only when the key is released, not when
pressed.
I have found reference in the archives to a similar
issue, where a change in value of C71 and C72 on the
KPA100 solved it, but these posts mention a relation
to the KDSP2 as well which I don't have.
Any thoughts? Should I go ahead and change the value
of C71 and C72, or does my lack of KDSP2 indicate that
I have a different problem altogether?
Do not change these components. I removed the modification when I
installed the latest KPA100 mods, because I am not sure that it does not
make the problem worse with the new KPA100 revision.
What I suggest is trying it with the menu parameter '8r hold' both on
and off and see which is better. Also see if it is quieter with t-r
delay set to 0.02 or 0.03 rather than 0.00.
Some people have this problem, some don't.
I have acquired parts, and plan to complete (but
haven't yet) the faster QSK mod, as well as the TF3MA
sidetone mod. Hopefully neither of these will
inter-relate with the solution to the clicks.
The QSK mod won't help with the clicks that appear with the KPA100 on.
If you go too far, you will introduce a different sort of 'artifact'!
You can't really do too much in terms of speeding up the QSK, unfortunately.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
