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DUO5 30 40T

DUO5 30/40T SF


DUO5 30/40T SF


DUO5 30/40T SF is a spectacular dualband yagi for the 7 and 10 MHz bands with incredible performance. On 30 meters it has three full size elements with Reflector/Driver/Director configuration; on 40 meters it has two elements with a Reflector/Driver configuration with compact size using loads placed at the ends of the elements. This solution, which was originally adopted by W6NL, allows to maintain the performance of a full size by reducing the size of the elements. Consequently, the performance of this antenna is comparable to a fullsize and both bands are fully usable with SWR below 1.5:1 on over 200 kHz.
It will no longer be necessary, during installation, to choose the portion of the band for which to optimize the antenna (typical characteristic of antennas with coils). You will have top performance!

Requires two coaxial cables
Requires a medium / heavy duty rotor

RF Choke:2X 3kW included

Availability: 6 weeks

Contact us for more info

4 U-bolt 50/60 mm (2-2.3 in) INCLUDED.
If you need larger ones, please choose below.

2x 3kW RF choke SO239 PLUG INCLUDED.
If you prefer, choose below different RF choke.


DUO5 30/40T30 m
40 m
Gain dBi:
(20 meters above the ground)
Gain dBd free space:4.854.2
Active elements:32
Bandwidth kHz
S.W.R. ≤ 1.5:1
Boom Length:700 cm/23 ft
Turning radius:975 cm/32 ft
Feed lines required:2 X 50 Ohm
Max tower lift side:70 cm/2.29 ft

Longest element:
1820 cm/59.70 ft

Power handling:
10 kW

Wind area:
0.9 m²/9.68 sq ft

Wind load 130Km/h:
730 N

Wind survival*:
130 Kmh – 80 Mph

Tower Leg/Mast diameter:  50/60 mm – 2/2.36 inch (larger on request – specify on order form)

RF Choke**:
2 x 3kW included

Weight (excluding packaging):
70 Kg/155 lb

Materials used

Tubes and plates:
Aluminum alloy 6060T6

stainless steel

insulating clamps:
polypropylene UV resistant


*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.

Get the manual

DUO5 3040SF User Manual EN 940 KB 1 downloads

User Manual DUO5 3040SF ...
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