[TowerTalk] Long Wire Sag

[jimlux]

On 3/12/19 7:37 PM, Ken wrote:
> I see you are not capitalizing "copperweld".  Copperweld is actually a 
> trademark and company name.  Most of what I see advertised is "copper 
> clad steel" and I wonder if the cheap wire we buy has thinner specs than 
> true Copperweld.  OTOH, I see that Copperweld has been acquired and is 
> now headquartered in China, so maybe (or maybe not) capitalized 
> Copperweld does not live up to it's old reputation.

It would still have to meet the resistance spec, and even the 21% IACS 
stuff would have a fairly thick layer of copper.



> 
> Speaking of 70 year old Copperweld, when I was a young ham in high 
> school (50+ years ago) I received an "antenna kit" from MARS.  It was 
> for a rhombic and included a 5200ft roll of 3 strand #12 Copperweld.  I 
> still have some of it left.
> 
> Ken WA8JXM
> 
> On 3/11/19 6:38 AM, Rob Atkinson wrote:
>> I've been told a lot of the copperweld problems today are due to
>> modern copperweld plating being cheap and no where near the thickness
>> of your dad's copperweld.  The wire from say, 70 years ago is
>> nonexistent now and what you buy today has minimal copper.  It's kind
>> of like the difference between steel hardware from the store that's
>> been zinc electroplated, and the good hot dip galvanized hardware from
>> manufacturers like Rohn.
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