[Fourlanders] Crank-up Antenna Supports on Trailers

[Robin Midgett]

Hi Guys,
An idea I've had for quite some time is to use two 20' pieces of square 
steel tubing one inside the other. The bottom (outside) tube could be 3" 
square (w/ 3/16" wall) and the top (inside) tube can be 2" square (w/ 1/8" 
wall).
Outfit each with small blocks of Nylatron (the graphite impregnated Nylon I 
use for bushings on the Sidewinder) for the friction points and you have 
two tubes that will sleeve properly. Then add a hand cranked winch, some 
1/8" stainless wire rope and a couple of pulleys to move the upper tube 
with. Mount the thing on a hinge point on a trailer so it tilts up. Guy 
cables (ropes?) at the top of the outer tube will keep the thing upright.

A small cage attached to the top of the inner tube will function as a rotor 
perch and supply a place to fix bushings or a thrust bearing for the mast. 
Clean, prime and paint for rust prevention.
Me thinks one one the front of my trailer and one on the rear would be a 
robust combination.

Here is a very good reference 
http://www.qsl.net/ei7ba/Crank-up%20Tilt-over%20Tower.htm

Thanks,
Robin Midgett KB4IDC
VHF+ Glutton
Southeastern VHF Society 2003 Conference
April 25-26 Huntsville, AL
www.svhfs.org