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Re: Topband: TV coax + F-connectors

To: topband@contesting.com
Subject: Re: Topband: TV coax + F-connectors
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Sun, 20 Feb 2022 12:55:09 -0800
List-post: <mailto:topband@contesting.com>
On 2/20/2022 10:53 AM, Mike Waters wrote:
And RG-6 has a power handling curve very similar to RG-213.

WRONG! This may be true of SOME RG6 cables, but definitely NOT true of many.

For at least 50 years, RG numbers have not been a spec, but rather a general description defining impedance and approximate outer diameter. There are hundreds of RG6 cables, many of them quite different from each other, and there are many different connectors. There are 63 "RG6 type" cables in what is probably the last printed version of Belden's catalog (from 2006).

The vast majority of RG6-type cables are made for MATV and CATV applications, with copper-coated steel centers and Al foil/braid shields, and the number of those braids and foils varies from one to four.

There's at least one RG6 in the Belden catalog with a solid copper center and a double copper braid shield. I have some of a Pasternak-branded cable that appears to be built to that spec, and I suspect it was for analog video inside studios. I also have about 500 ft of a very similar Belden RG11, also designed for analog video.

73, Jim K9YC
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