TRASAR
®
VHF-TV Transmitting Antennas
Specifications
Channel Range:
VSWR:
Deicing:
Input Power:
Input Type:
7-13, one 6 MHz channel
(174-216 MHz)
1.05 Visual +0.5 MHz 1.08 Color
Sub-Carrier 1.10 Remainder of Channel
Fiberglass Radome Enclosed
100 kW, Peak Visual +20% Aural
Specify 50 or 75 ohm 6-1/8" EIA
Azimuth Patterns
As shown in the table, omnidirectional and skull patterns
are standard. Cardioid patterns are also available.
Note that these are typical free space patterns and may
vary slightly depending on channel, structural design
criteria and tower mounting configuration.
Antenna Selection
Antennas are selected on the basis of:
•
Azimuth Pattern
•
Elevation gain 6, 9, 12 or 16 are typical
•
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.
Top-Mounted Antennas
Azimuth Pattern
Relative Field
Pol.
Peak Power
Gain
Standard
Type No.
Omnidirectional ±1 dB
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)
330°
0
1.0
0.8
30°
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)
330°
0
1.0
0.8
30°
Relative Field
Relative Field
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.
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