[TowerTalk] old rotor contacts repair question

[Steven Katz]

Most would just eliminate the terminal strip and install a cover plate with a hole and grommet to bring out a cable with a detachable connector, like the "rotator reconditioning" guys do.  But whatever works.

If the meter needle is jumpy, I'd think that's because the rotator's internal 500 Ohm positioning indicator potentiometer is worn out and needs replacement.   Those are available.

I've rebuilt or reconditioned several of these rotators over the decades.   The HAM-II is really old.

-----Original Message-----
From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of David Huff
Sent: Friday, March 22, 2019 11:03 AM
To: TowerTalk at contesting.com
Subject: [TowerTalk] old rotor contacts repair question

I have just acquired an old CDE / Ham II rotor and now I am reconditioning it.  I have 2 questions.


  1.  The previous owner used steel screws or washers on the rotor electrical screw terminals, which means I need to remove the rust.  My plan is to replace with brass or stainless screws and washers.  It rotates, and the meter needle moves, but is jumpy, probably because of the rusty terminals.  What do you recommend for a good cleaner to get the electrical pads clean again.
  2.  Is there something I can cover the screw terminals with to prevent the water from getting in and creating problems in the future?

Thanks,
David
W0IM


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