Very soon afterwards (a few weeks instead of perhaps a year), the
operator called me over to show me the problem with that switch. I know
what I saw, and I am convinced that it is abrasive. That grease
accelerated
the failure of that switch by a tremendous amount.
This is very interesting and something I also discovered and never reasoned
why, I have used Potable silicone grease inside PL-259 coax connectors and
never had a problem, however, when I have used the same grease inside the
rotary preset switch for my Prosistel rotator controller box it destroyed
the switch in a couple of months, now I know why. Thanks for the interesting
thread.
73 Max
M0GHQ
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