Heavy Duty 900MHz Half-Parabolic Antenna 900MHz band for STL Applications Directional Grid Half Parabolic Antenna High Gain, Heavy Duty Optional Radome.Specifications:Antenna type: Half Parabolic (2-pieces )Frequency range: 940 – 960 MHzBandwidth: 20 MHzGain: 19.5 dBiFront-to-back ratio: > 30 dBVSWR: < 1.5Impedance: 50 ohmsPolarization: Horizontal or VerticalPower rating: 100 WattsH-PLANE Beamwidth: 16.5 degrees (half-power)E-PLANE Beamwidth: 16.5 degrees (half-power)Connector: N type FemaleDiameter: 4 ft (1.2 mt)Windload: 125 MPHElevation Adj Range: + or - 5 degreesWeight: 27 lbs (12.5 Kg)Dimensions: 6ft x 3.5ftPkg Dimensions & Weight: 52"42"14" (13210736cm) 40lbsMounting: from 1.5" to 3"Lightning protection: all parts grounded This is a folded edge anodized aluminum half-parabolic antenna particularly suitable for STL systems. Due to its narrow radiation pattern, this antenna has excellent front-to-back and front-to-side ratios minimizing the possibility of interference from other stations. Because of its high directional and gain this antenna is well suited for long distance STL links.