[TenTec] OT: RCS-4 Remote Antenna Switch

Robert & Linda McGraw K4TAX RMcGraw at Blomand.Net
Sun Nov 20 13:50:23 EST 2005


Rick:

Sounds like the control circuit is opening up under cold, metal is 
contracting, conditions. When its warm, metal expands and contact is made. 
Looks like some detail circuit tracing is in order.  Put it in the freezer 
for a couple of hours, then do point to point measurements with an ohm 
meter. Thus unique to the box you have.

73
Bob, K4TAX


----- Original Message ----- 
From: "NJ0IP" <Rick at DJ0IP.de>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Sunday, November 20, 2005 11:21 AM
Subject: [TenTec] OT: RCS-4 Remote Antenna Switch


>I have installed an Ameritron RCS-4 remote coax switch fed by 28m of coax.
>
> It is not functioning properly.
>
>
>
> It seemed to work OK during the day when the temperature was about +2
> degrees, but tonight when it is -3 degrees, it is not switching.
>
> When I shut down the power, it turns all antennas off.
>
> When I switch on the power, it selects antenna #2 with the switch in
> position 1 or 2, and no antenna with the switch in position 3 or 4.
>
>
>
> So my question is, has anyone used this box and did you have any 
> temperature
> problems?
>
> There are no logic chips inside the remote box - only diodes, relays, 
> Elkos
> and C's.
>
>
>
> Any ideas?
>
>
>
> (Otherwise I'll have to use a manual switch and I'm going to be running 
> back
> and forth between the shack and the switch more than I'm operating!)
>
>
>
> 73
>
> Rick
>
>
>
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