The FG16397 Laird fiberglass is a quad-band omnidirectional base station antenna incorporates a collinear design. The radiating elements are made from high efficiency copper and are carefully phased to provide maximum gain in the horizontal plane. The mounting sleeves are tuned to eliminate RF currents from the transmission line, resulting in a? Sleeve that allows for greater freedom in mounting. S high quality and well-focused beam provides the best efficiency with highest gain. Covers 156-162 MHz frequency Range with 3dBi gain. VHF Antenna (30 – 300 MHz). 148 – 174 MHz. 156 – 162 MHz. Vertical/Elevation (EL) Beam Width. Horizontal/Azimuthal (AZ) Beam Width. 1.3 x 1.3 x 107.