TETRA17 10/15/20/40 FS


TRI10 10/15/20

Tri10 10/15/20 m yagi antenna
TRI7 10/15/20 Separate Feed

TRI7 10/15/20 SF


TRI7 10/15/20 SF


TRI7 10/15/20 SF is the smallest of the Momobeam triband antennas that use separate feeds. Both 20 and 15 meters use full size elements with a reflector and driver configuration, while on 10 meters, the active elements are a reflector, driver and director configuration. TRI7 10/15/20 SF is perfect for multi transmitter stations. In fact, the solution of the separate feeds gives this antenna a great versatility. It can be used simultaneously by three different transmitters as if they were connected to three separate monoband antennas (use of BPF is necessary to protect your equipment). As a result, the space used on the towers is significantly optimized!

TRI7 10/15/20SF comes with an Assembly Tool and spare parts (bolts and a pair of aluminium tubes).
N.3  3kW RF Choke balun is also supplied as standard. This component is very expensive and many antenna manufacturers supply it as an optional extra.

This antenna allows the station owner to move to a multi-operator category in a simple way. The advantages of this solution are:
1. Decreased number of installed antennas
2. Reduction of the surface exposed to the wind
3. Elimination of a DIPLEXER or TRIPLEXER – less complicated station
4. Easy to setup multi-antenna/multiband stacking if desired

Requires three coaxial cables
Requires a rotor for a medium/light load

RF Choke:3X 3kW included

Availability: call!

For US market:
more questions? call Mark K1RX

 603-973-5963 | 
contact him by WA | 
 send an email

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

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


TRI7 10/15/20 SF10 m
15 m
20 m
Gain dBi:
(20 meters above the ground)
Gain dBd free space:
Active elements:322
Bandwidth kHz
S.W.R. ≤ 1.5:1
Boom Length:540 cm/17.7 ft
Turning radius:630 cm/20.66 ft
Feed lines required:3 X 50 Ohm
Max tower lift side:45 cm/1.45 ft

Longest element:
1110 cm/36.4 ft

Power handling:
10 kW

Wind area:
0.68 m²/7.31 sq ft

Wind load 130Km/h:
558 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**:
3X 3 KW included

Weight (excluding packaging):
28 Kg/62 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

TRI7 101520 User Manual EN 940 KB 73 downloads

User Manual Tri7 101520 ...
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