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Re: [TowerTalk] Balun question

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Balun question
From: Steve Maki <lists@oakcom.org>
Date: Mon, 11 Oct 2021 14:00:47 -0400
List-post: <mailto:towertalk@contesting.com>
Carol,

Your first question was not clear - is it RG-11 style or hardline coax that you have?

If it's RG-11 braided cable you should take the suggestions and replace the F connectors with PL-259's. If it's solid aluminum hardline I'd still replace the F connectors, but you'd have to use one of the many DIY methods that have appeared on this reflector over the years, none of which is as simple as a PL259 on an RG11 cable, but not very hard either.

73, Steve K8LX


On 10/9/2021 3:14 PM, CAROL RICHARDS wrote:
Hello all,

I have two questions which I hope someone will be able to answer...


1. I have acquired a large supply of 75 ohm ( aka RG 11) CATV hardline from the 
local CATV company. They were even kind enough to install the F-fittings for 
me. I have enough F-PL259 adapters to use with the cable. Will the CATV 
fittings handle 1kw on 80m and 40m inverted vee's?

2. I built several 1:1 Current Baluns from the April 2021 issue of QST and they 
work fine. The specs say they will handle legal limit. Both my 80m and 40m vees 
are cut for CW. When I want to go on SSB, I usually run the coax through a 
Palstar AT2K tuner. I never worried about this before since I always used coax 
chokes, but now I might have some concerns. Although the amplifier ( 1kw) is 
happy, SWR-wise, I realize that I might have some high voltage that might be 
going through the chokes and ultimately fry them. Any Thoughts out there?


Carol
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