Hi Tom,
Study the schematic ... IIRC, the #4 position uses no
power, so that is why it may seem to be 'quiet'? (And
it means that antenna is always going connected when
the power is OFF, think that out and confirm it's OK)
Are you seeing the steering/switching voltages change
as to plus, minus, and so forth ...
Seems like I recall comments on the eHam reviews on
this topic? Might be worth reviewing those too.
Hope this helps!
73 de Billy, AA4NU
----- Original Message -----
From: "K0YR" <k0yr@tomrieff.com>
Cc: towertalk@contesting.com
Sent: Monday, November 24, 2014 4:29:47 PM
Subject: Re: [TowerTalk] RCS4 Antenna Switch - Noise
T/T,
This RCS4 has a built in power supply. No wall wort. When switching unit
is brought in to the bench, there is no noise, only when placed at the
tower. Noise goes away when power is off or in the #4 default position.
Just curious if anyone has experienced this before???
Tom, K0YR
>
>
>
> On Mon, Nov 24, 2014 at 2:58 PM, K0YR <k0yr@tomrieff.com
> <mailto:k0yr@tomrieff.com>> wrote:
>
> 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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