Archive for '4 square project'
80m 4-square Element Build
The elements are made in three sections. The bottom is a 3m 2.5 x .25 inch aluminium tube, the middle is a standard 6m scaffold pole and the top is a 12m spiderbeam pole.
The first job is to make the overlap joint for the aluminium sections. I’ve allowed for a minimum of a 12 inch overlap. Two M10 [...]
Posted: October 6th, 2009 by G6PZ under 4 square project, G6PZ's entries.
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80m 4-square Luffing System
As the element is designed to swivel on the bottom bracket and lay flat on the ground for easy installation and maintenance a one man raising and lowering system is required. I purchased 4 inexpensive trailer winches off an Ebay shop. I had first thought about running the rope over a pulley wheel on the [...]
Posted: October 6th, 2009 by G6PZ under 4 square project, G6PZ's entries.
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80m 4-square Pressure Treated Posts and Mounting Hardware
Four pressure impregnated posts were sourced from a local farm outlet store. They are 5×5 (1250mm) inch x 2m long. I made 4 holes with a petrol driven hole borer to a depth of 750mm and spaced them 66 ft apart in a true square measuring across each of the diagonals. I then put [...]
Posted: October 6th, 2009 by G6PZ under 4 square project, G6PZ's entries.
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80m 4-square Radial Connection
Connecting radials to a vertical can be a pain. There are some good commercially available systems but it can work out to be quite expensive when you have to have four of every thing. Here I have made a simple radial connection system out of copper electrical earthing bar. Its fairly labour intensive [...]
Posted: October 4th, 2009 by G6PZ under 4 square project, G6PZ's entries.
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80m 4-square Radial System
These views are looking down from a 45 foot cherry picker that I use for my electrical business but it also comes in very handy for aerial maintenance at the aerial farm.
As you can see the radial system is being installed, at the moment there are 40 radial wires for each vertical. Most of [...]
Posted: September 22nd, 2009 by G6PZ under 4 square project, G6PZ's entries.
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80m 4-square project
This project has been a long time coming, for a while now it was realised that our 80m performance was some what lacking and Sergei UT5UDX suggested that a 4 sq might be the way to go.
As my neighbour keeps her horses in our field I did not want to have lots of guy wires [...]
Posted: August 24th, 2009 by G6PZ under 4 square project, G6PZ's entries.
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