Manufacturer Sinclair Technologies Mfg. Model No. SHA211-SF1SNM Product Description Rugged heavy-duty two-bay exposed dipole antenna that covers the 138 – 174 MHz band. It has 5 dBd gain with a bidirectional pattern. The antenna comes with an N Male connector which is terminated on a 1 ft cable. The antenna can be top or side-mounted. Item Height 120 in Lightning Protection DC Ground Vertical Beamwidth 17 deg Item Width 42.75 in RF Connectors N Male Item Length 4.75 in Polarization Vertical Gain dBi 7.1 dBi Item Weight 39.5 lb Gain dBd 5 dBd Maximum Power 250 W Connector Placement Pigtail Maximum Rated Wind Velocity 175 mile/h Maximum VSWR 1.5:1 Antenna Pattern Bidirectional Type of Hardware Included None Jumper Included Yes Specific Frequency 138-174 MHz