Description 1.High performance C-Load struc- ture.LinerPhaseShifter technology permits the antenna to achievehighperformance,high power rating low vswr, and broader band coverage on both 2m and 70cm bands. 2.Direct element joint structure with twointerconnectedFRPouter- shells.Enablestheantennato maintain the same strength as one with one piece structure. The ring gasket makes the antenna water- proof,andthereforemaintains performance even in rainy weather. When required, the antenna can be easily assembled or disassembled byadjustingthejointbracket accordingly. 3.Professionalqualitymaximum wind resistance is achieved by the rugged structure. Superior water- proofingeliminatesunstable VSWRthatmightotherwise happen in climatic weather. This antenna may also be used in seaside or contaminated air environments as it is rust and corrosion free. 4.Both of the bands, 2m and 70cm, can be operated simultaneously by using optional antenna duplexer. 5.DCgroundstructure,which escapes high voltage caused by lightning, protects your radio and equipment. Specifications FREQUENCY: 144-148 MHz 435-450 MHz GAIN:6.5 dB 9.0 dB POWER:200 Watts IMPEDANCE: 50 Ohms VSWR:less than 1.5:1 MAX WIND RESISTANCE: 50m/sec (112 MPH) MAST DIAMETER ACCEPTED:30-62mm (1-1/5” to 2-2/5”) LENGTH:2.9m (114.2”) WEIGHT:1.9 kg (3.3 lbs.) CONNECTOR: UHF Female (X300A) N Female (X300NA) WARRANTY:1 Year against defects in material or workmanship. VSWR Charts Adjustment All X-Series antennas are completely adjustment free. If VSWR of an anten- na is extraordinarily high, see if each connecting part is well contacted. It is most likely due to bad contact in the coaxial cable and/or connector connec- tion, or soldering problem. Be sure to use 50ohm coaxial cable to feed the antenna. Assembly X300A/X300NA 2m/70cm Dual Band High Performance Gain Base Station Antenna DIAMOND ANTENNAProducts are distributed by RF PARTS COMPANY 5340 BBS Way|Braselton, GA 30517|(770) 614-7443 www.diamondantenna.net Upper Outershell Upper Outershell Joint Bracket Gasket Holder Element Joint Bracket Upper Element Lower Element Lower Outershell Joint Bracket Lower Outershell Radial Elemen