[TowerTalk] Controllable Coax Switch

[Pete Smith]

The TopTen decoders are sink type, while the RCS8-V requires source 
drivers, I believe - the difference is that TopTen supplies power to the 
relay box, and the decoder decides which relay gets ground; the RCS-8 
supplies a common ground, and switches power to the correct relay.  I think 
TopTen makes a source driver board, and if you have the electronic smarts 
you could build one yourself; in that case WX9T makes a BCD-10 band decoder 
board that only costs $20, and emulates the Top
Ten very nicely.

SO2R capability is a different issue - you'd need two band decoders and 
source drivers, another RCS-8V and either 6 A/B switches or some 
specially-built logic to make sure that both radios can't be connected to 
the same antenna.  It doesn't come cheap!

73, Pete N4ZR

At 09:39 PM 4/30/2007, john at kk9a.com wrote:
>You can buy a Top Ten band decoder and use that to control your RCS-8V.  If
>you want to spent more money you can also purchase their relays.
>
>John KK9A
>
>
>
>To: towertalk at contesting.com
>Subject: [TowerTalk] Controllable Coax Switch
>From: "Kelly Johnson" Date: Mon, 30 Apr 2007 14:15:06 -0700
>List-post: <mailto:towertalk at contesting.com>
>
>I want to replace my RCS-8V remote switch.  I need to be able to
>switch 4 HF antennas.  I don't need a remote switch, but would like a
>switch that can be controlled automatically.  SO2R capable would be a
>plus.  I'm looking for the cheapest solution.  Any ideas?
>
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