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The cutting-edge SIRA UTV-12 panel has revolutionized the concept of television broadcasting antennas especially on pentagonal spines: the omnidirectional pattern, traditionally achieved via four panel faces on the sides of a 600x600mm spine, is created by five faces of SIRA UTV-12 special panels. In this way, space and practicality are notably increased within the spine, for much easier installation and maintenance in complete safety, even in cases of complex or "heavy" power dividers from a point of view of component sections, which are commonly found conditions in high power systems.
The UTV-12 systems created to date have confirmed their notable practical benefits in terms of working space inside the structural spine: following the basic rules of planimetry, if we add a side I to a square of dimension I, we obtain an increase in internal surface area of 72%. Translated into the three dimensions of a television antenna spine, the internal volume increases by the same amount and, with an increase in volume occupied by the power dividers, the worst-case result has been approximately 50% more free space inside the structural spines.
Arqiva in Great Britain and RTRN in Russia have chosen SIRA pentagonal-shaped antenna systems for some of their largest sites. Different projects are currently being assessed by other important operators on the world broadcasting panorama.
To find out more about all of SIRA's proposals for panel designs and for directional and omnidirectional patterns on square, pentagonal or customized tower sections adapted to suit specific mobile television standard needs, click here.