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The SPECTRAL IsoPole Vhf & Uhf omni-directional antennas has been considered as a Masterpiece of Design, obtaining a strong reputation through the years and offering exceptional characteristics compared with any other type of antennas as:
O degree radiation angle, so the major lobe is oriented on the horizon giving the maximum gain on the length. Decoupling sleeves offer greater efficiency than the common radials, producing a uniform pattern and a great mechanical strength. JI

Broader frequency coverage than other collinear antenna .They can be tuned for commercial, military or amateur frequencies without re tuning across the entire band with less than 2:1 of SWR with no compromise for the transceiver.

Constructed with the best quality materials available of high resistance corrosion aluminium alloys, stainless steel mounting hardware, and insulation resistant to UV mainly manufactured for satellite applications; the connector is inside the mast fully weather protected, offering a linear and constant performance.

It is an ideal choice for repeaters and trunking systems, and can replace arrays of 4 dipoles in omni directional configuration with similar performance and saving costs of installation, less wind load area and high power handling if required.

It has a high noise threshold, capable of discriminating weak signals of spurious or static noises, and it is also DC grounded.

The installation of the Spectral is very simple, it requires only a metallic tube (not supplied with the antenna for a reason of length) of 32mm (1-1/4in) and 2,5 meter (3 feet) for VHF (137-160) models, model of higher frequencies accept shorter masts, and the UHF models are supplied with their own masts and it is only necessary to spend a few minutes assembling and tuning by a simple length adjusting according to the chart.

 

 


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