Description
TETRA18 10/15/20/40 DF | 10 m band | 15 m band | 20 m band | 40 m band |
---|---|---|---|---|
Gain dBi: (20 meters above the ground) | 16.6 | 15.8 | 14.0 | 11.3 |
Gain dBd free space: | 8.9 | 7.9 | 6.5 | 4.7 |
F/B: | 20 | 25 | 20 | 20 |
Active elements: | 7 | 5 | 4 | 2 |
Bandwidth kHz S.W.R. ≤ 1.5:1 | 800 | 450 | 350 | 200 |
Boom Length: | 1140 cm/37.4 ft | |||
Turning radius: | 960 cm/31.5 ft | |||
Feed lines required: | 2 X 50 Ohm | |||
Max tower lift side: | 150 cm/4.92 ft |
Longest element:
1700 cm / 56 ft
Power handling:
10 kW
Wind area:
2.5 m²/26.9 sq ft
Wind load 130Km/h:
1525 N
Wind survival*:
160 Kmh – 100 Mph
Tower Leg/Mast diameter: 50/60 mm – 2/2.36 inch
(larger on request – specify on order form)
RF choke**:
2x 3 KW included
Weight (excluding packaging):
130 Kg/286 lb
Materials used
Tubes and plates:
Aluminum alloy 6060T6
Hardware:
stainless steel
insulating clamps:
polypropylene UV resistant
Manual:
English
*Wind survival is the maximum wind speed to which the antenna can be subjected without incurring permanent deformation (calculated in the absence of ice)
**The Momobeam RF Choke (standard product offering, rated at 3 KW) is made from high quality Teflon dielectric, double shielded, low loss coaxial cable with properly selected ferrite material that is sleeved over the cable that together, create a high impedance path for RF, providing high isolation between the antenna and coaxial feedline.
An SO-239 female connector is included for convenient attachment to the customer feedline and its PL-259 Male connector.
The 5 KW and 10 KW rated RF chokes (optional purchase) are made from the same materials except the coaxial cable is 10 mm diameter.
The 10KW version uses a 7/16 DIN style connector.
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