Find, buy, borrow, rent, a tall extension ladder... The bigger, the better.
Fasten (tie, clamp, etc) several large pulleys with rope lines to the top
and middle of the extension ladder. Also fasten three to four rope guys to
the ladder at the middle and top positions. Stand the collapsed ladder
vertically, and anchor the middle guys. Then, extend the ladder to it's
maximum height and anchor the top guys. Now you have a raising fixture,
with two hoisting lines that can be tied to the tower (HG-70HD) at its top
and center. Guying the ladder with rope or wire, will allow considerable
force to be applied. If you also add 'turning blocks' to the bottom of the
ladder, most of the force will be vertical, through the axis of the ladder.
BTW, a common aluminum extension ladder also makes a great re-usable antenna
support for field-day applications. Boom-to-Mast plates and U-bolts can be
used to adapt the ladder to allow masts to be added at the top of the
ladder. Four ladders can easily support a full-wave loop for 160 meters.
73, Larry - W1GOR
----- Original Message -----
From: "Bob Farkaly" <firstname.lastname@example.org>
Sent: Monday, August 09, 2004 9:35 PM
Subject: [TowerTalk] Raising Crank Up Tower to Vertical
> When I've erected my HG-70HD in the past, I always had a handy tree to
> which I could attach a rope (or wire rope). Then, using the recommended
> A frame, I could get the tower from a prone position to vertical (using
> a chain fall).
> This time, no trees. I've been searching for information on the US Tower
> erection facility, but nothing but dead ends. And I don't want to pop
> for $700 if their product won't fit or work. I can't get dimensions or a
> drawing anywhere.
> I'm looking for any thoughts, ideas or suggestions on how to get the
> crank up vertical.
> Bob, K9RHY
> Bob Farkaly, K9RHY
> 13163 Edina Way
> Poway, CA 92064
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
> TowerTalk mailing list
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list