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Electrical data
Radiation at 50 MHz
Effective electrical length............................ : 0.57 l
Isotropic gain............................................ : 10.1 dBi
Aperture angle @ -3 dB
- E-plane ........... : 2 x 27.5°
- H-plane ........... : 2 x 37.5°
First side lobe set
- E-plane ........... : None
- H-plane ........... : None
Rear protection......................................... : - 23.8 dB
Average stray radiation
- E-plane ........... : - 30 dB
- H-plane ........... : - 18 dB
Bandwidth
Gain @ -1 dB........................................... : 48 to 52 MHz
Nominal impedance.................................. : 50 W
Impedance match bandwidth @ SWR<1.3/1 : 49.9 to 50.5 MHz
Acceptable RF power (continous duty)........ : 1000 W
Array of 2 or 4 antennas
(optimized stacking distance, from center to
center of elements, for minimal side lobe
radiation)
- E-plane - Electrical distance .. : 0.93 l
- E-plane - Practical distance ... : 5.58 m
- H-plane - Electrical distance .. : 0.75 l
- H-plane - Practical distance ... : 4.50 m
Mechanical data
Connector................................................ : Bracket
Overall length............................................ : 3.45 m
Mass....................................................... : 4.9 kg
Effective wind load
- Horizontal polarisation.. : 0.13 m2
- Vertical polarisation...... : 0.35 m2
Approximate wind load (25m/s - 55 mph)
- Horizontal polarization.. : 4.9 daN
- Vertical polarization..... : 13.2 daN
Approximate wind load (45m/s - 100 mph)
- Horizontal polarization.. : 15.9 daN
- Vertical polarization..... : 42.8 daN
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