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Re: [TowerTalk] Inner conductor migration in Heliax(TM)

To: "rcblumen@centurylink.net" <rcblumen@centurylink.net>
Subject: Re: [TowerTalk] Inner conductor migration in Heliax(TM)
From: Jon <kd5sfa@gmail.com>
Date: Tue, 12 Apr 2016 14:21:48 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
The cable is circular...it shouldn't matter.   I would think that the
requirement to store a certain way is for drainage possibly.

On Tuesday, April 12, 2016, Dick Blumenstein <rcblumen@centurylink.net>
wrote:

> Not sure what you mean by the "drums vertical"? Do you mean that the wire
> is mostly vertical being stored on the drums; that the drums are sitting on
> edge?
>
> Dick K0CAT
> =====================
>
> David Aslin G3WGN wrote on 4/12/2016 2:33 PM:
>
>> Hi all,
>> Looking for the TT brains trust to help me out with this issue:
>> I have two drums of LDF4-50 and one of LDF5-50 which have been stored on
>> their sides for around 10 years.  This disobeys one of the prime
>> directives, since Andrew/Commscope say they MUST be stored with the drums
>> vertical.  My understanding is that the horizontal storage may lead to
>> inner conductor migration.
>> QUESTIONS: How can I determine whether migration has occurred; if so to
>> what extent; and what extent should cause me to avoid using the cable for
>> the 50m/165ft+ runs to my HF towers?
>>
>> Of course, if there is gross migration, a continuity check from inner to
>> outer would reveal a short, but would a TDR or other method reveal
>> performance degradation from lesser amounts of migration?
>> 73, David G3WGN  M6O
>>
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> --
>
>
> Richard (Dick) Blumenstein
> Tel:  (386)  451-6660
>
> E-Mail:  rcblumen@centurylink.net
>
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