"Dick, AA5VU" wrote:

I am having fits with my old Ham IV control head readings. The controls
(CCW and CW) work but the meter is flakey. I tried the Cal procedure int
he manual but that does not seem to work.

Regarding the manual is is useless on the purpose of the Calibrate
control. I know it has an IN and OUT position and should be used to set
the meter in the full CW postion.

What is the 'In' position and what is the 'Out' position?

It does not seem to have a great deal of control over the needle. The
needles seem to like staying in the far right South postion.

Help!

Dick - AA5VU

There is a wirewound pot in the rotator unit which tends to get dirty
and can lead to erratic readings as well. You can clean it pretty well
with a little very fine grit paper, or contact cleaner. It is this
pot which tells the meter which direction the antenna is pointing. I
also saw one which opened up at one end and had to be replaced. That
way way back when, but you should be able to order the part. Replacement
is easy. If you do replace it, give it a little spray of contact
cleaner before reassembling the rotor unit.

Hope this helps...

Irv VE6BP

--
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Diagnosed Type II Diabetes March 5 2001
Beating it with diet and exercise!
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58"/43"(!)/44" (already lower too!)
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Irv Finkleman,
Grampa/Ex-Navy/Old Fart/Ham Radio VE6BP
Calgary, Alberta, Canada