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Re: [TowerTalk] Used Heliax ?

To: "F5vjc" <foxfive.vjc@gmail.com>, <TowerTalk@contesting.com>
Subject: Re: [TowerTalk] Used Heliax ?
From: "Jim W7RY" <jimw7ry@gmail.com>
Reply-to: Jim W7RY <jimw7ry@gmail.com>
Date: Sat, 24 Dec 2011 08:57:56 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
It's made by ANDREW. No S on the end.  LDF1 is 1/4" in diameter. About the 
size of RG8X but much lower loss. You can use a standard PL-259 and modified 
UG176 (for RG-8X).


Both have solid center conductor. Both are very good quality coax. If it was 
used indoors, it's probably just fine. If it's bee used outside, I would 
allow several feet at each end to be cut off because of possible moisture 
ingress. LDF4 connectors are plentiful on EBay.

LDF1 connectors are much more rare. Most of the 1/4" connectors you find are 
for FSJ1 not LDF1 They are different!  FSJ is superflex. LDF is low density 
foam. FSJ is more flexible. and used for short jumpers. LDF is more rugged 
and typically used outdoors.


73 and Merry Christmas!
Jim W7RY


--------------------------------------------------
From: "F5vjc" <foxfive.vjc@gmail.com>
Sent: Saturday, December 24, 2011 8:44 AM
To: <TowerTalk@contesting.com>
Subject: [TowerTalk] Used Heliax ?

> I'm thinking to buy some used Heliax locally. I have a couple of
> offers, one is LDF4-50 which I am familiar with, the other is LDF1-50
> which I am not. I have of course looked these up on the net and can
> find and compare the specs of both.
>
> This is for an HF only installation (up to 50 MHz) 150 feet in length
> so losses are not my major concern. However in general is there
> anything to watch out for when buying used Heliax of any type? I
> believe it is Andrews.
> The LDF 4-50 will come with N type connectors so that is a plus, is
> the LDF1-50 any use in this application?
>
> Any advice please?
>
> 73 Deni
> F5VJC
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