[UK-CONTEST] Pulleys and rope

[Chris Tran ZL1CT]

Hi Steve

As Adrian suggests, you will probably need a 'double-run' i.e. 2 pulleys at 
the top and 2 at the bottom. There are several things to watch out for 
though - for example, marine pulleys are expensive and often have a 'vee' on 
one side which is designed to trap the rope when required - this is an 
undesirable feature for antenna raising/lowering. Also, it is sometimes 
difficult to obtain a pulley block which has an eyelet or hook at  both 
ends, which is what you will need for one of the pulleys.

For example, 2 x 20' steel scaffold poles with a 20m 3ele monoband yagi on 
top are easily raised by one person using a 20' steel scaffold pole as the 
gin pole, using 2 pulleys at the top and 2 at the bottom, with 10mm rope. 
However it does take quite a time setting up the side guy tension etc. and 
raising/lowering several times without the antenna of course.

73
Chris
GM3WOJ / ZL1CT