Posted by
Mike Harris-9 on
Jan 04, 2005; 3:49pm
URL: http://elecraft.85.s1.nabble.com/A-minor-C22-question-tp373225p373227.html
G'day,
Not really an issue. Get C22 right with the cover off and right away do
the "cal pll" before putting the cover on. After that it doesn't matter
what happens when the cover is replaced 'cos it has no effect whatsoever
on calibration.
Regards,
Mike VP8NO
| The cover on vs. off naturally changes overall circuit capacitance as
well
| as temperature. What you do is see how much you are off with cover on,
and
| adjust with cover off, in a direction to bring the circuit right on with
the
| cover on. In other words, you overcompensate the setting for the final
| cover on case. A few iterations should give you a hint on how much
change
| is needed to be right on. marking the slot position with cover off,
vs.
| cover on, when the frequency is right on should give you the range.
Then
| set the slot halfway and see if that is not the optimum. It may be less
| than the slot width, so a deft touch is needed.
| GL and 72,
| Stuart
| K5KVH
_______________________________________________
Elecraft mailing list
Post to:
[hidden email]
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.htmElecraft web page:
http://www.elecraft.com