220311 Tonna 2m 11 element Radiation at 144.3 MHz
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Tonna beam-HF-VHF-UHF antennas

220311 Tonna 2m 11 element Radiation at 144.3 MHz

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Product code: 220311
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£174.95
12 Months 14.9% APR
£17.49
£15.08
£198.41
£174.95
18 Months 14.9% APR
£17.49
£10.05
£198.41
£174.95
24 Months 14.9% APR
£17.49
£7.54
£198.41
£174.95
36 Months 14.9% APR
£17.49
£5.03
£198.41
£174.95
48 Months 14.9% APR
£17.49
£3.77
£198.41
£174.95
12 Months 19.5% APR
£17.49
£15.68
£205.65
£174.95
18 Months 19.5% APR
£17.49
£10.45
£205.65
£174.95
24 Months 19.5% APR
£17.49
£7.84
£205.65
£174.95
36 Months 19.5% APR
£17.49
£5.23
£205.65
£174.95
48 Months 19.5% APR
£17.49
£3.92
£205.65

220311 Tonna 2m 11 element professional class 1kW 14.2dBi

electrical data

Radiation at 144.3 MHz
Effective electrical length : 2.33 l
Isotropic gain : 14.2 dBi
Aperture angle @ -3 dB
- E-plane : 2 x 18.4°
- H-plane : 2 x 19.4°
First side lobe set
- E-plane : - 18 dB @ 50°
- H-plane : - 12 dB @ 50°
Rear protection : - 21 dB
Average stray radiation
- E-plane : - 30 dB
- H-plane : - 24 dB
Bandwidth
Gain @ -1 dB : 141 to 149 MHz
Nominal impedance : 50 W
Impedance match bandwidth @ SWR<1.3/1 : 143 to 147 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 : 1.70 l
- E-plane - Practical distance : 3.53 m
- H-plane - Electrical distance : 1.59 l
- H-plane - Practical distance : 3.32 m

Mechanical data

Connector : N
Overall length : 4.89 m
Mass : 5 kg
Effective wind load
- Horizontal polarisation : 0.24 m2
- Vertical polarisation : 0.27 m2
Approximate wind load (25m/s - 55 mph)
- Horizontal polarization : 9.2 daN
- Vertical polarization : 10.3 daN
Approximate wind load (45m/s - 100 mph)
- Horizontal polarization : 29.6 daN
- Vertical polarization : 33.3 daN

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