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Re: Topband: Power / Control cable

To: topband@contesting.com
Subject: Re: Topband: Power / Control cable
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Mon, 16 Jul 2018 14:12:10 -0400
List-post: <mailto:topband@contesting.com>

If you don't need twisted pair for the signaling lines, look at multi-
wire sprinkler cables.  The big box stores list them in 18/4, 18/5,
18/7, and 18/10 in 500 ft rolls.  Should be available from the sprinkler
supply houses in 1000' spools.  Sprinkler cable may be a bit more rugged
than CAT5 (#18 vs. #24) ...

OTOH the big box stores seem to be more expensive (18/5 x 500' @ $155)
than places like Cable Wholesale (1000' gel filled direct burial
*copper* CAT5e @ $110).


73,

   ... Joe, W4TV


On 2018-07-16 11:36 AM, Eric NO3M wrote:
I'm in the process of finding a replacement cable to supply power (+24VDC) and differential serial signaling (RS-485) to my remote RX switching matrix and vertical arrays.  Total run is about 600ft. The original cable was outdoor rated, gel infused CAT5 using 3-cond for VDC+, 3-cond for VDC-, and the remaining two cond for serial. It lasted almost 7 years.

Recent searches for a reasonably priced replacement CAT5 have brought up a lot of candidates, but with CCA (copper clad aluminum) conductors. I'd prefer pure copper as far as the power lines are concerned, but price increases dramatically.

Any recommendations on a suitable and decently priced cable to do the job, supplier?  Perhaps parallel runs of 18/2 or 16/2, 18/4 or 16/4, or a good deal for CAT5 with pure copper?

Thanks
73 Eric NO3M

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