In the words of the immortal Ron Ziegler*, my previous comments on this subject
are "inoperative at the present time." Here is what I determined today:
Problem: some K2/100s produce a large click in the headphones or speaker on
unmute. The click requires that the power be set to at least 11 watts, and the
DSP to be active (not in bypass mode). No RF needs to be generated (test mode
can be set). The t-r menu parameter is set to 0.
Solution (for my k2/100, anyway): change BOTH C72 (originally 0.01 uf) and C71
(originally 0.0018 uf) to 0.1 uf. Note that C71 is a 200v cap.
Changing C71 by itself reduces the click but doesn't eliminate it. Changing C72
by itself appears to have no effect. Changing them both makes it totally go
away. Your mileage definitely may vary; some K2/100s do not have the problem at
all.
* Ron Ziegler was press secretary in the Nixon administration.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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