The antenna will be a Jampro three-tier JLPC circular polarised antenna fitted with parasitic reflectors to achieve the radiation pattern envelope template. Jampro Incorporated will pattern tune this antenna on their test-range in California using a partial replica of the Rock Solid Transmission tower. In addition to the restriction of 19dBW at 90o, Jampro will test and pattern tune the antenna for 27dBW, 24dBW and 21dBw at 90o in anticipation of a relaxation in the 90o restriction being successfully co-ordinated with the spectrum management agencies in Ireland and the UK.
Each antenna tier will be individually fed from the power divider in the transmission building, this will facilitate antenna and tower maintenance and will enable emergency operation into the split tiers should there be an issue with the individual antenna elements or feeders.
The antenna will be side mounted on the 220o ETN tower leg at a mid height of 20m above ground level on a true North heading.
The antenna will be compliant with the ODTR regulations (T&RT 95/10) regarding Vertically Radiated Power, as the vertical aperture is 2.5 wavelengths.