Topband: Verifying integrity of 75 ohm coax. ( silicone grease)

[Max Cotton]

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