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Re: [TowerTalk] decoupling RF from control lines

To: Pete Smith <n4zr@contesting.com>, towertalk@contesting.com
Subject: Re: [TowerTalk] decoupling RF from control lines
From: ersmar@comcast.net
Date: Tue, 16 Aug 2005 12:54:50 +0000
List-post: <mailto:towertalk@contesting.com>
Pete:

     I used 1000 uH chokes in the DC-over-coax feed system for my EWE relay 
boxes on 160M.  The value was cited in several feed designs I researched at 
that time.  I bought conformal coated chokes from Ocean State Electronics at 
http://www.oselectronics.com/ose_p91.htm .  FWIW.

73 de
Gene Smar  AD3F



> I am dealing with some pesky rf in control lines to a remote antenna switch.  
> I'm thinking that an RF choke in series and bypass cap to ground on each line 
> would help.  My question -- are .1 mfd and 100 uh appropriate values for good 
> performance down to 160 meters, or if not, what would be?
> 
> 73, Pete N4ZR
> The World HF Contest Station Database
> was updated on 21 June 2005
> 2965 contest stations at 
> 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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