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Codan-radio Radio Repeater Systems Training Guide Manual do Utilizador Página 66

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TRAINING GUIDE | RADIO REPEATER SYSTEM
Appendix F: Examples of Antenna DataPage 58
Figures F-3 and F-4: 400 MHz Radafl ector Characteristics
+10°
0
-10°
dB RE l /2 DIPOLE
-10
-5
0 +5 +10-10-50
+5+10
+15
Vertical Radiation Pattern for Horizontal Polarization
Mechanical Specifications
Height:
Weight:
Rated Wind Velocity:
Rated Wind Velocity:
(with 0.5 in radial ice)
km/h (mph)
kg (lbs.)
mm (in.)
2083 (82)
km/h (mph)
Horizontal Thrust at rated
wind velocity and ice load:
Width:
mm (in.)
kg (lbs.)
1041 (41)
161 (100)
136.7 (85)
113 (250)
Electrical Specifications
Frequency Range:
Nominal Gain:
Bandwidth, 1.5:1 VSWR:
Horizontal Beamwidth:
(half power points)
Power Rating:
Polarization:
Lightning Protection:
Termination:
15
406 - 420
450 - 470
32
250
Vertical or Horizontal
DC Ground
Type "N" Male
MHz
dBd
MHz
Deg.
Watts
Vertical Beamwidth:
(half power points)
Deg.
Front to Back Ratio: dB
Pattern: Directional
18
24
406 - 420
450 - 470
11.3 (25)
Characteristics of a 400 MHz Radaflector.
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