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Re: [TowerTalk] Remote switching design choice

To: Pete Smith <n4zr@contesting.com>,towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Remote switching design choice
From: "Barry " <w2up@mindspring.com>
Reply-to: w2up@mindspring.com
Date: Sun, 09 Nov 2003 20:49:14 -0000
List-post: <mailto:towertalk@contesting.com>
For the same reason they all have different wiring schemes for the 
mic connector - to make life difficult for us!
73,
Barry W2UP

On 9 Nov 2003 Pete Smith wrote:

> 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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--
Barry Kutner, W2UP              Internet: w2up@mindspring.com
Newtown, PA                     Frankford Radio Club
         


_______________________________________________

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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