[aprssig] APRS Irrigation Pipe 55' mast

[William McKeehan]

I like this idea, but I'm at a total loss about how you place the pullies and
run the rope. I've never seen something like this where I could inspect it and
can't figure out how pulling a rope down can make the pole go up.

Can anyone give me some instructions on how this would work? Something with
pictures would help.

Around here, Lowes Home Improvement sales a 30 foot pole that collapses down
to 10 feet; it would be nice to take something like that and add pullies.

On Mon, May 8, 2006 5:44 pm, Robert Bruninga said:
> For 20+ years, people have been asking me to  document
> my very lightweight 55' push-up mast that I use for APRS
> field events.  So I finally took some pictures Saturday while
> doing some long overdue maintenance for this years  Field Day:
>
> http://www.ew.usna.edu/~bruninga/Antenna-Ipipe.html
>
> WIth a 15' marine fiberglass whip on the top, it gets me to
> 70 feet in only a few minutes and only weighs 35 lbs.
>
> Just thought I would share it for anyone else that likes to
> tinker...  Built it with only a hacksaw and stuff lying around.
>
> de Wb4APR, Bob

-- 
William McKeehan
KI4HDU
Internet: mckeehan at mckeehan.homeip.net
http://mckeehan.homeip.net

Leave the beaten track occasionally and dive into the woods.
Every time you do so you will be certain to find something that you have never
seen before.
     - Alexander Graham Bell