[TowerTalk] Remote switching design choice

Barry w2up at mindspring.com
Sun Nov 9 20:49:14 EST 2003


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




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