Towertalk
[Top] [All Lists]

Re: [TowerTalk] 300 MHz Remote Switch

To: towertalk@contesting.com
Subject: Re: [TowerTalk] 300 MHz Remote Switch
From: Ian White GM3SEK <gm3sek@ifwtech.co.uk>
Reply-to: Ian White GM3SEK <gm3sek@ifwtech.co.uk>
Date: Tue, 20 Dec 2011 14:02:09 +0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Pete Smith wrote:
>Recently, on a whim, I bought one of these
><http://www.ebay.com/itm/12V-8-Channel-Way-Relay-Output-RF-Remote-Contro
>l-Switch-/130545242235#vi-content>,
>thinking it might be possible to use it to switch beverages at a point
>about 250 feet from my house.  I knew, of course, that the little
>hand-held remote couldn't possibly reach that far, but thought maybe I
>could cobble something up.
>
>Looking at it, I'm impressed by the relay assembly, which seems very
>sturdily made.  Is there any possibility, through the use of antenna
>improvements on both ends, that I might be able to get the range of the
>thing up to what's necessary, or would I be better off just modifying
>the relay assembly as a wired switch.
>

For a receive-only setup, you could easily run the 315/433MHz control 
signal up the coax, along with 12V DC power and the returning signals 
from the Beverages. A few inches of wire threaded under the shield braid 
at each end of the coax (like the old Monimatch) should make a good 
"launcher" and "catcher", and the coax link should deliver far stronger 
signals than over the air between antennas.


-- 

73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>