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Re: [TowerTalk] Budget 4-Pack?

To: "Tower and HF antenna construction topics." <>
Subject: Re: [TowerTalk] Budget 4-Pack?
From: "Tom Osborne" <>
Reply-to: "Tower and HF antenna construction topics." <>
Date: Tue, 02 Mar 2010 18:14:37 -0800
List-post: <">>
Hi Barry

I just built some antenna switches to switch antennas between radios.  I 
have one 2-position switch for each antenna.  Each switch goes to a 7 
position switch at each radio.  That way I can select whichever antenna I 
want to go to either radio.  No danger of transmitting into front end of a 
radio that way.   73

>I have two HF radios and 4 different HF antennas.  I would like to use
> each rig on any antenna, while obviously locking out that antenna for
> the other rig.  The commercial products 6-Pack, 8-Pack, etc are way
> over my budget.  Anyone have a schematic for a "4-Pack" or similar
> device they would like to share?  Obviously relays are the way to
> go, and I can get the RF relay switching part of it on paper but
> not the lockout logic.  Some sort of electro-mechanical exclusive-OR
> gate array / diode matrix?  Anyone been there and done that?
> TNX / 73,
> Barry - W1HFN


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