Aluminium Mast Guy Rope & Lengths

(Guying instructions downloads are at the bottom.)

GUY ROPE

 

Spiderbeam offers two kinds of rope for guying its HF Yagi antennas:

  1. 6mm Polyester Rope
  2. 4mm Dyneema Rope

 

For permanent installations, clearly the Dyneema rope is preferable.  

It's fundamental advantage over Polyester rope is that it does not stretch.  

 

Stretching is very dangerous because loose guy ropes is one of the major causes of damage in storms.  A properly guyed antenna is far less likely to be damaged than one with loose guy ropes.

 

Polyester is cheaper and definitely strong enough for the job.  It is often preferable (for cost reasons) in portable and expedition operations.  During these field day like operations, someone is near the antenna every day and can see when the lines have stretched and need a little tensioning.

 

Dyneema costs about 50% more than Polyester, but saving on this point, especially for permanent installations is, in my opinion, saving in the wrong place.  In the end it may result in far more expense and agrivation.

 

GUY ROPE LENGTHS:

 

The table on the right shows two sets of lengths for guy ropes. 

  1. Recommended (70% of height)
  2. Minimum (60% of height)

 

You can increase the distance to the guy stake for even more strength but there is no point in placing the guy stake farther out than the height of the highest guy point.

 

The Spiderbeam mast models are shown across the top with a yellow background.

The distance to the ground stake is also shown with a yellow background.

 

The lengths shown for each individual guy rope is the actual distance between the guy plate and the guy stake (in Meters).  In practice you need to cut each rope 2m (6.6 ft.) longer than the length shown.

 

Lengths are shown for 3-direction and 4-direction guying.

 

At the bottom of each chart you see how many rolls of 6mm Polyester or 4mm Dyneema rope are required for each mast.

 

Since the table is a bit difficult to read online, I will include a downloadable version below.

Downloads

Guy Rope Lengths for Spiderbeam Aluminum Masts
Lengths are show in METERS for each of the Spiderbeam mast models.
Guy Rope Lengths of Masts.pdf
PDF-Dokument [68.6 KB]
Guying Instructions for 10m Alu Mast
Instructions for guying the Spiderbeam 15m Aluminium Mast.
Guying Instructions for 10m ALU Mast.pdf
PDF-Dokument [135.9 KB]
Guying Insturctions for 10m HD Alu Mast
Instructions for guying the Spiderbeam 10m Heavy Duty Aluminium Mast.
Guying Instructions for 10m HD ALU Mast.[...]
PDF-Dokument [135.5 KB]
Guying Instructions for 12.5m Alu Mast
Instructions for guying the Spiderbeam 12.5m Heavy Duty Aluminium Mast.
Guying Instructions for 12.5m ALU Mast.p[...]
PDF-Dokument [129.7 KB]
Guying Instructions for 14.5m HD Alu Mast
Instructions for guying the Spiderbeam 14.5m Heavy Duty Aluminium Mast.
Guying Instructions for 14.5m HD ALU Mas[...]
PDF-Dokument [151.2 KB]
Guying Instructions for 15m Alu Mast
Instructions for guying the Spiderbeam 15m Aluminium Mast.
Guying Instructions for 15m ALU Mast.pdf
PDF-Dokument [156.3 KB]
Guying Instructions for 18m Alu Mast
Instructions for guying the Spiderbeam 18m Heavy Duty Aluminium Mast.
Guying Instructions for 18m ALU Mast.pdf
PDF-Dokument [181.1 KB]