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@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@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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