Tonna 220329 70cm Antenna

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SKU
220329
£174.95 £145.79
Quick Overview
70cm (430-440MHz) 27 Element Antenna

Electrical data 
 
Effective electrical length  : 7.13 l
Isotropic gain  : 18.3 dBi
Aperture angle @ -3 dB 
- E-plane  : 2 x 9.3°
- H-plane  : 2 x 11.6°
First side lobe set 
- E-plane  : - 11.0 dB @ 25°
- H-plane  : - 12.0 dB @ 25°
Rear protection  : - 18.9 dB
Average stray radiation 
- E-plane  : - 36 dB
- H-plane  : - 28 dB
Bandwidth 
Gain @ -1 dB  : 426 to 444 MHz
Nominal impedance.................................. : 50 W
Impedance match bandwidth @ SWR<1.3/1 : 427 to 445 MHz
Maximum RF power (peak, SSB/CW)  : 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  : 2.5 l
- E-plane - Practical distance  : 1.73 m
- H-plane - Electrical distance  : 2.5 l
- H-plane - Practical distance  : 1.73 m
 
Mechanical data 
 
Connector  : N
Overall length : 4.92 m
Mass  : 6.2 kg
Effective wind load 
- Horizontal polarisation  : 0.21 m2
- Vertical polarisation  : 0.39 m2
Approximate wind load (25m/s - 55 mph) 
- Horizontal polarization  : 7.1 daN
- Vertical polarization.  : 14.2 daN
Approximate wind load (45m/s - 100 mph) 
- Horizontal polarization  : 23.4 daN
- Vertical polarization  : 45.7 daN

More Information
Manufacturer Tonna
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