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RE: [BULK] - [TowerTalk] RG-11 Source?

To: "Tower Talk List" <towertalk@contesting.com>
Subject: RE: [BULK] - [TowerTalk] RG-11 Source?
From: "Jim Brown" <jim@audiosystemsgroup.com>
Reply-to: Jim Brown <jim@audiosystemsgroup.com>
Date: Wed, 09 Feb 2005 18:18:12 -0600
List-post: <mailto:towertalk@contesting.com>
On Wed, 9 Feb 2005 15:13:17 -0800, Steve Katz wrote:

>It wasn't until we tried quad
>shielded cables (foil/braid/foil/braid) that we just plain couldn't create
>ghosts at any interference level we could generate. 

About 30 years ago, I worked for an MATV contractor who had lots of 
installations in high rise buildings on Chicago's Lake Shore Drive, in the 
shadow of VHF and UHF transmitters on Hancock and Sears, and with 
transmitting antennas having very little directivity in the vertical plane (1 
and 2-bay on 2-6, 3 bays on 7, 4 on 9 and 11). VERY well shielded cable was 
absolutely necessary for these installations -- anything less simply would 
not work!   

>I can't think of any
>common amateur applications where any of this would matter, though

Dunno -- perhaps in very densely populated VHF/UHF sites?  I would certainly 
defer to those with far more experience in that world than I. 

Jim Brown  K9YC


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