Base Station Antennas BRIEF REVIEW OF OMNI DIRECTIONAL ANTENNAS Omni-directional antennas have radiation patterns that cover the horizon uniformly. Gain greater than unity is achieved by forming a.collinear vertical array, which reduces the elevation beamwidth but leaves the azimuth (horizon) pattern unaffected, Larsens moderate-duty omni antenna radiating elements and ground plane radials are constructed using our trademarked Kulrod process at the heart of which is 17-7 heat treated stainless steel, All base station antennas are supplied with mounting hardware to attach to a pole up to 2" in diameter, BSA SERIES OMNIS BSAseties omni antennas are engineered to provide lasting performance in the most demanding field conditions, Design features include: * Heavy, nickel-plated brass square nut radial collar (square nut allows easy removal for extra portability and convenience), * 150 and 220 models are DC grounded * Power rating 200W * Wind load rating 100 mph FB SERIES OMNIS FB series omni antennas are designed for optinmum performance in extreme weather conditions, Design features include: * Compact, easily transportable design * All-weather construction * Power rating 200W * Wind load rating 100 mph aBase Station Antennas RO series antennas feature a sround plane independent design, DC grounded and enclosed in a fiberglass radome, The radome protects the radiating element from the weather and reduces the flexing of the whip in a low frequency vibration environment as would be encountered at the top of long mast, Design features include: Ground plane independent All-weather construction DC grounded * Power rating 200W a Wind land eating TAN mah BRIEF REVIEW OF DIRECTIONAL ANTENNAS Directional antennas are used in communication systems where gain, higher than can be provided by a reasonable omni (> 7 dBi), is required, Directional antennas are useful for remote locations where high gain is required and the direction to a desired transmitter/receiver is known, They are used in cell and microcell applications to divide a seographical region into sectors, This reduces interference in the network allowing a greater number of users to be serviced, Antenna gain and directivity are increased by increasing the effective aperture of the antenna, In a Yagi, this means adding more elements, directors, to the antenna, For panel antennas, this means increasing the size of the panel by adding more elements or increasing the spacing between elements, A Yagi (Yagi-Uda) antenna is a parasitic linear array of parallel dipoles, Typical construction uses a single driven dipole with a reflector and director elements excited by near field coupling to the driven element. Yagi's are popular due to their rugged construction and relatively high gain, YA series Yagis are built to precise specifications to perform in extreme weather conditions. They are fully welded for high strength and low noise performance, Design features include: Fully welded * Solid aluminum elements * Aluminum tube boom * Power rating 300W * Wind load rating 100 mph PANELS Latsens panel antennas use a variety of microstrip element designs, High gains are achieved by combining several elements together with corporate power dividers, Large arrays use an edge taper to reduce side lobes, Gains up to 18 dBi can be readily achieved, PA series panel antennas are built for PCS, Cellular, Spread Spectrum data and SMR applications, They are microcell pole or building mount directional antennas, Design features include * Indoor and outdoor applications e Precision cut radiating elementBase Station Antennas MODEI ate eke Pe tesa] ale heheBase Station Antennas ODE! ate eke ODE a teh ee eB) aece ie % ee hehe es pores ee > oO = mt | ie 4 iL ion Antennas m2 . BaseBase Station Antennas db Frequency: 806 MHz Frequency: 806 MHz Polarization: (E & H Polarization: (E & H plane) plane} [eo B) = eh eke ODE ae On ie] = ale heheBase Station Antennas re Frequency: 806 MHz Polarization: (E & H plane} [eo B) = ele One tLe Ta aie Oe eB) eeeBase Station Antennas : i : : : i : = z : * oo ODE ae On MODEI eeeBase Station Antennas Frequency: 900 MHz Frequency: 800 MHz Polarization: Horizontal Polarization: Horizontal ODE! eel eke ate eeeBase Station Antennas Sse NIEaieBase Station Antennas ODE ane hen ODE! teh eke eB) eh eneBase Station Antennas [se IA Ne? a 7 \ a em ae wee Frequency: 825 MHz Polanzation: Hor (BE) Plane Frequency: 810 MHz Polarization: Hor (@ Rane gece NCC Note SceneBase Station Antennas Frequency-825 MHz Polarization: Vertical Ren y=I FREQUENCY CONNECTOR ene FREQUENCY CONNECTORBase Station Antennas Frequency :825 MHz Frequency: 825 MHz Polarization: Vert ical Polarization: Vertical Yeni GeeUe Nao Eaie Gre MeS ECS