220317 Tonna 2m 17 element Radiation at 144.3 MHz
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Tonna beam-HF-VHF-UHF antennas

220317 Tonna 2m 17 element Radiation at 144.3 MHz

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Product code: 220317
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£289.96
12 Months 14.9% APR
£29.00
£24.99
£328.84
£289.96
18 Months 14.9% APR
£29.00
£16.66
£328.84
£289.96
24 Months 14.9% APR
£29.00
£12.49
£328.84
£289.96
36 Months 14.9% APR
£29.00
£8.33
£328.84
£289.96
48 Months 14.9% APR
£29.00
£6.25
£328.84
£289.96
12 Months 19.5% APR
£29.00
£25.99
£340.84
£289.96
18 Months 19.5% APR
£29.00
£17.32
£340.84
£289.96
24 Months 19.5% APR
£29.00
£12.99
£340.84
£289.96
36 Months 19.5% APR
£29.00
£8.66
£340.84
£289.96
48 Months 19.5% APR
£29.00
£6.50
£340.84

Radiation at 144.3 MHz
Effective electrical length : 5.01 l
Isotropic gain : 17.0 dBi
Aperture angle @ -3 dB
- E-plane : 2 x 14.0°
- H-plane : 2 x 14.9°
First side lobe set
- E-plane : - 18 dB @ 36°
- H-plane : - 14 dB @ 37°
Rear protection : - 29 dB
Average stray radiation
- E-plane : - 35 dB
- H-plane : - 27 dB
Bandwidth
Gain @ -1 dB : 141 to 149 MHz
Nominal impedance : 50 W
Impedance match bandwidth @ SWR<1.3/1 : 143 to 146 MHz
Maximum RF power (peak, SSB/CW) : 1000 W
Array of 2 or 4 antennas
(optimized stacking distance, from centre to
centre of elements, for minimal side lobe
radiation)
- E-plane - Electrical distance : 2.15 l
- E-plane - Practical distance : 4.47 m
- H-plane - Electrical distance : 2.15 l
- H-plane - Practical distance : 4.47 m

Mechanical data

Connector : N
Overall length : 10.45 m
Mass : 18.5 kg
Effective wind load
- Horizontal polarization : 0.73 m2
Approximate wind load (25m/s - 55 mph)
- Horizontal polarization : 27.8 daN
Approximate wind load (45m/s - 100 mph)
- Horizontal polarization : 89.7 daN

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