[Elecraft] DIY Hard-drawn copper wire

[Henry Pollock - K4TMC]

Also...just in case...make sure the wire is longer than the height of the
tree...

73,
Henry - K4TMC


On Thu, Feb 11, 2016 at 9:57 AM, Dave Cole <dave at nk7z.net> wrote:

> But the real question is:
>
> If the tree falls over, and no one hears it, did it really fall over,
> and did the wire snap?
>
> Sorry, I could not resist...
> --
> 73's, and thanks,
> Dave
>
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> On Thu, 2016-02-11 at 14:34 +0000, Dauer, Edward wrote:
> > In a recent post Jim, K9YC, suggested making hard-drawn copper wire
> > for antennas by attaching a few hundred feet of bare copper wire to a
> > tree or telephone pole at one end and to a bumper hitch at the other,
> > then driving away very slowly until it snaps.  That sounded like a
> > very attractive idea - much in the ham tradition.  I wondered,
> > though, whether it could be done using a car without a bumper
> > hitch.  The minimum breaking strength of number 8 hard-drawn copper
> > wire (though it might be closer to number 10 after being stretched)
> > is between 644 and 826 pounds, according to a chart I found on the
> > Internet.  Rather than test it empirically with my 16-year-old SUV
> > (no bumper hitch), I wondered what 700 or 800 pounds of shear force
> > would do to an automobile frame, assuming attachment to a suitable
> > bolt somewhere.  Or would the tree fall over first?
> >
> > Ted, KN1CBR
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