[TowerTalk] RCS4 Antenna Switch - Noise

[Ron W8RJL]

Tom,
I think it is better to drill out the steel rivits and install SS bolts, 
nuts and tooth washers (all stainless) than just solder a wire between all 
SO-239's. If not you still have a corroded connection which in some 
situations can produce problems. How do you know the noise is from the 
switch? does it go away when you remove power to the switch control box? 
There are diodes involved in the switching scheme, you might replace those 
as they are cheap. 73, Ron W8RJL

----- Original Message ----- 
From: "K0YR" <k0yr at tomrieff.com>
To: <towertalk at contesting.com>
Sent: Monday, November 24, 2014 2:58 PM
Subject: [TowerTalk] RCS4 Antenna Switch - Noise


> TT,
> I inherited a RCS4 Antenna Switch from an estate.
> When first installed it generated noise when using the 1,2 or 3 switch 
> positions. The default is #4.
> Did some Google'ing and found discussion about corrosion on the SO239's 
> mounted to the base plate.
> Ran a ground wire across the SO239's to the circuit board. Cleaned up some 
> of the other connections.
> All seemed well and much improved. This past weekend the noise returned 
> and was sometimes intermittent.
> Switch is located about 450 feet out at the towers. Fed with 7/8 hardline.
> This unit was manufactured in 1992, so could be anything.
> Any thoughts on what I may be missing or failing in the switch to 
> eliminate the noise.
> Tom, K0YR
>
>
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