[TowerTalk] Wire Rope

[Edward Mccann]

Tom -

Do you recall manufacturers designation? JSC 1318? Other?

Ed McCann
AG6CX

Sent from my iPhone

> On Sep 10, 2020, at 11:35 AM, Tom Osborne Sr. <w7why1 at gmail.com> wrote:
> 
> I had some of that 450 ohm ladder line with copperweld wire and that stuff
> was terrible.  It rusted like crazy where it hooked to the antenna.  After
> about 6 months I had to lower the antenna, cut the ends off of the feed
> line and reconnect it.  The SWR would go out of sight.  Finally took it
> down and threw it away.  73
> Tom W7WHY
> 
> 
>> On Thu, Sep 10, 2020 at 3:07 AM Rob Atkinson <ranchorobbo at gmail.com> wrote:
>> 
>> I've been told that modern copperweld doesn't have anywhere near the
>> thickness of copper on it compared to the copperweld of 60 or 70 years
>> ago.   The old wire lasted.  I think W6AM used it with his rhombics
>> and I never heard of Don having to replace them every few years.   And
>> he was near the Pacific with the salt water problem.  I suggest
>> contacting commercial shortwave broadcasters who, in the U.S., have a
>> lot of rhombic antennas and find out what sort of long span wire they
>> use.  In general, I find it helpful to contact broadcasters whenever I
>> am attempting something that parallels what has been done by
>> commercial industry.  Those people have a knowledge base of facts and
>> data such as time between failure, and while their materials may be
>> costly, they can provide a method that can be followed to some extent
>> at a lower cost for a ham.
>> 
>> 73
>> 
>> Rob
>> K5UJ
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