TETRA14 10/15/20/40 SF
TETRA14 10/15/20/40 Separate Feed is a multiband yagi with a super compact design and unique features. We often see towers full of monoband antennas very close to each other. Do you think this is the best solution? Towers full of antennas inevitably interact, distorting radiation patterns.
With the TETRA14 Separate Feed this problem is overcome!
Indeed, each band has its own feed connection, allowing contest stations to use this antenna simultaneously with 4 different transceiver / amplifier configurations, as if each station had its own monoband antenna (the use of BPF is necessary to protect the equipment). As a result, the space occupied on the towers is significantly reduced, and performance is also significantly higher!
On the TETRA14 Separate Feed the element spacing has been optimized through latest-generation software to ensure the best performance.
On 40 meters it has two elements with a Reflector/Driver configuration, whose dimensions have been compacted using end-placed loads. This solution, originally adopted by W6NL, to whom our thanks go, allows performance to be like a full-size yagi even if it has a reduced element length. On 10/15/20 meters, it uses 4 elements per band with reflector, driver and 2 director configuration.
Requires four coaxial cables, one for each band
Requires a medium/heavy-duty rotator
RF Choke: 4X 3kW included
Availability: 8 weeks
| TETRA14 10/15/20/40SF | 10 mt | 15 mt | 20 mt | 40 mt |
|---|---|---|---|---|
| Gain dBi: (at 20 meters from the ground) | 14,1 | 14,7 | 13,1 | 11,2 |
| Gain dBd free space: | 6,4 | 7,1 | 13,1 | 4,5 |
| F/B: | 20 | 20 | 20 | 20 |
| Active elements: | 4 | 4 | 4 | 2 |
| Bandwidth KHz VSWR = 1.5:1 | 800 | 450 | 350 | 200 |
| Boom length: | 1010 cm | |||
| Turning radius: | 930 cm | |||
| Required feed lines: | 4 X 50 Ohm | |||
| Max boom to mast side: | 90 cm | |||
Longest element: 1560 cm
Applicable power: 10 kW
Wind surface: 1.7 m²
Wind load 130Km/h: 1364 N
Wind survival*: 130 Kmh
Mast attachment: 40/60 mm (larger on request)
Balun: 3/5/10 kw (not included, to be purchased separately)
Weight (excluding packaging): 80 Kg
MATERIALS USED
Tubes and plates: aluminum alloy, 6060T6
Hardware: stainless steel
Insulator shells: UV resistant polypropylene
Manuals available: Italian – English
*Wind survival is the maximum wind speed to which the antenna can be subjected without permanent deformation (value calculated in the absence of ice)
