General rules Pete, switch on the lowest potential side. ( which we know is
not always true, fortunately no one holds the truth. )
2 cent 1/2 worth Euro
Jos
----- Original Message -----
From: "Pete Smith" <n4zr@contesting.com>
To: <towertalk@contesting.com>
Sent: Sunday, November 09, 2003 6:28 PM
Subject: [TowerTalk] Remote switching design choice
> Can someone explain to me why some remote antenna switch manufacturers use
> a scheme that supplies 12V to the relay box and switch the ground side of
> the relays to select antennas, while others supply a common connection and
> switch the 12V to the desired relay? I can't see an advantage one way or
> the other, and it does have the effect of creating incompatibility among
> makers' hardware.
>
> 73, Pete N4ZR
> The World HF Contest Station Database was updated October 29.
> 2469 stations are listed -- 29 new and over 100 updated.
> Are you current? www.pvrc.org/wcsd/wcsdsearch.htm
>
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
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>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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