TRASAR(R) VHF-TV Transmitting Antennas Azimuth Patterns Specifications Channel Range: 7-13, one 6 MHz channel (174-216 MHz) VSWR: 1.05 Visual +0.5 MHz 1.08 Color Sub-Carrier 1.10 Remainder of Channel Deicing: Fiberglass Radome Enclosed Input Power: 100 kW, Peak Visual +20% Aural Input Type: Specify 50 or 75 ohm 6-1/8" EIA As shown in the table, omnidirectional and skull patterns are standard. Cardioid patterns are also available. Antenna Selection Note that these are typical free space patterns and may vary slightly depending on channel, structural design criteria and tower mounting configuration. Top-Mounted Antennas Antennas are selected on the basis of: Azimuth Pattern Relative Field * Azimuth Pattern Pol. Peak Power Gain Standard Type No. Omnidirectional 1 dB * Elevation gain 6, 9, 12 or 16 are typical Horiz. 6.00 (7.78 dBd) Ellipt. ** 0.6 60 300 Horiz. 9.00 (9.54 dBd) 0.4 0.2 Ellipt. ** 270 90 Horiz. 12.00 (10.79 dBd) Ellipt. ** 120 240 Horiz. 16.00 (12.04 dBd) 150 210 180 Ellipt. ** Directivity: 1.00 (0.00 dB) * Beam tilt 0.75, 1.0 or 1.5 are typical * Horizontal, elliptical or circular polarization * Top or side mount Standard Type Numbers are listed in the table. Specify channel number and, for elliptically/circularly polarized antennas, the desired power split. Other patterns, gains and beam tilts are available on request. 0 1.0 0.8 30 Relative Field 330 ATW6V3-HTO- (*) ATW6V3-ETO- (*) ATW9V3-HTO- (*) ATW9V3-ETO- (*) ATW12V3-HTO- (*) ATW12V3-ETO- (*) ATW16V3-HTO- (*) ATW16V3-ETO- (*) Skull Horiz. Ellipt. 0.6 60 300 Horiz. 0.4 0.2 Ellipt. 90 270 Horiz. 120 Ellipt. 240 Horiz. 150 210 180 Ellipt. Directivity: 1.90 (2.79 dB) 0 1.0 0.8 Relative Field 330 30 11.40 (10.57 dBd) ** 17.10 (12.33 dBd) ** 22.80 (13.58 dBd) ** 30.40 (14.83 dBd) ** ATW6V3-HTS-(*) ATW6V3-ETS-(*) ATW9V3-HTS-(*) ATW9V3-ETS-(*) ATW12V3-HTS-(*) ATW12V3-ETS-(*) ATW16V3-HTS-(*) ATW16V3-ETS-(*) * Specify VHF-TV channel number. ** Horizontal and vertical gains depend on power split. Specify power split. 286 Customer Service Center - Call toll-free from: * U.S.A., Canada and Mexico 1-800-255-1479