[Elecraft] The "Kinda Random Antenna"
John Oppenheimer
john at kn5l.net
Wed Feb 1 14:49:23 EST 2017
501 ladder line #18 solid CCS copper thickness is 0.0717 mm
http://copperweld.com/sites/copperweld.com/files/w30ccs-ed5230.pdf
RF skin saturation is well below 1 MHz using the calculator:
http://owenduffy.net/calc/SkinDepth.htm
551 is #18, 19/30 stranded, #30 CCS copper thickness is 0.0178 mm
John KN5L
On 02/01/2017 01:18 PM, Lynn W. Taylor, WB6UUT wrote:
> This may not always be possible.
>
> Copper-clad steel exists because it's stronger than copper. Wind, ice,
> or simply a long span can exceed the strength of copper, and then you
> don't have an antenna at all.
>
> "Over-engineering" by making the wire bigger also makes it heaver and
> gives it a larger cross section (more windage).
>
> I guess you could take your large diameter copper and wrap it around
> something else to hold it up, but that's basically the idea behind
> copper clad steel.
>
> To me, the earlier post means that not all copper-clad wire is suitable
> for all antennas -- with #553 as an example.
>
> 73 -- Lynn
>
> On 2/1/2017 10:57 AM, Clay Autery wrote:
>> Well then... that seems to vindicate my desire to avoid CCS wire and
>> "overengineer" with the use of larger wire diameters.
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