[TowerTalk] Rotor loop coax

[Bryan Swadener]

Date: Mon, 20 Aug 2018 00:04:57 +0200


From: Peter DJ7WW
Subject: Re: [TowerTalk] Rotor loop coax

http://disti-assets.s3.amazonaws.com/cdmelectronics/files/datasheets/4697.pdf
73
Peter

REPLY:The first page says it all. Thanks!
vy 73,Bryan WA7PRC
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Date: Sun, 19 Aug 2018 21:45:45 -0400
From: John KK9A
Subject: Re: [TowerTalk] Rotor loop coax

That is what I use, specifically Belden 8267.  LMR400 is not really not much
better. Assuming that this is not a 100 to 200' tower, why not use the same
coax all the way down the tower and eliminate the top connector?

REPLY:There are several variations of LMRxxx cable. No suffix = solid copper-coated aluminum center conductor. I would avoid it for anything that has to repeatedly flex.
vy 73,Bryan WA7PRC
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Date: Sun, 19 Aug 2018 21:56:37 -0400
From: Larry Banks W1DYJ
Subject: Re: [TowerTalk] Rotor loop coax

I always thought a top connector was a good way to ground the coax to the 
tower at the top.  It also makes it a lot easier to replace the loop if need 
be.

73 -- Larry -- W1DYJ

REPLY:
Currently, among other modifications, I'm reworking the transition from the top coax arm on my tower, to the mast (three feedlines). I realized that, the last time I dealt with the rotator loop, I didn't quite allow enough cable for 360° rotation. The new setup involves brackets and bulkhead fittings on BOTH sides of the loop. I'm using DX Engineering pn DXE400MAX cable.
vy 73,Bryan WA7PRC