One of the main problems with floodlighting masts is the electric cable having to safely travel the full length of the extended mast, and be conveniently stored when retracted.
The FM Series of Hilomast has solved both these problems in a neat and practical way, a coiled cable enters the mast through a special gland in the base and extends inside the mast to the top where it exits into a junction box for lighting connections. The memory in the cable allows it to extend and retract with the mast.
Coupled with the obvious advantages of a pneumatic telescopic mast the 'FM' System is one of the market leaders in this field.
There are three standard models in this series, all with a base, diameter of 4.5 inches. Each has an inner cable with four cores of 12 SWG, and are complete with a rainshield, rotation handles, pressure relief valve and mast extension warning switch.
Mounting is with side mounting brackets, or vehicle a roof bearing kit . Extension is by compressor or foot pump.
As these masts are usually used in situations of short duration, they do not have locking collars or top guys as standard, but are available if required.
Please request a copy of our new Hilomast brochure for further details on other competitive products we specialise in. Alternatively please click here to view the PDF.
Height Extended feet |
Height Retracted feet |
Number of Tubes |
Toptube Diameter inches |
Vertical Head Load kgs |
Maximum Windspeed mph |
With Top Guys mph |
Mast Weight lbs |
|
Mast |
||||||||
FM5 |
15.4 |
1.63 |
5 |
2.4 |
99 |
105 |
128 |
55 |
FM6 |
21.6 |
2.02 |
5 |
2.4 |
79 |
80 |
80 |
64 |
FM8 |
26.2 |
2.31 |
5 |
2.4 |
61 |
71 |
71 |
72 |
The table shows the vertical head load that each mast will support and the maximum operational wind speed. The weight of the antenna, however, is not usually the main criterion when selecting a mast. The limiting factor is usually the ‘side surface area’ of the antenna.
Wind speeds calculated on maximum vertical load with side surface area of 496 inches²