Momobeam TRI12‑SF Separate Feed 20/15/10 Meter Yagi Antennas are outstanding medium‑sized triband Yagi antennas designed for operators who demand strong performance without the compromises of traps or mechanical tuning systems. These antennas cover the 20, 15, and 10 meter bands with exceptionally low SWR, and because all elements are full size, they deliver performance that clearly surpasses older‑generation designs. No calibration or adjustments are required—simply enjoy reliable operation, even in the most challenging pileups.

Thanks to their separate feedlines, TRI12‑SF antennas allow three different transceivers to operate simultaneously, effectively functioning as three independent monoband antennas when used with proper band‑pass filters to protect station equipment. This configuration makes them an excellent choice for multi‑operator, multi‑band operation, whether for contesting or chasing DX.

Assembly is engineered to be simple and intuitive. The TRI12 20/15/10 SF antennas use a square‑boom structure, and all components arrive well‑organized for a smooth installation experience. Every hardware piece is packaged in its own labeled bag, and all aluminum tubes are clearly marked, ensuring fast and error‑free assembly.

These antennas require three coaxial feedlines, and a medium‑load rotator for proper operation. Three high‑quality 3kW RF choke baluns are included as standard—an important advantage, as many manufacturers offer them only as optional upgrades. With their combination of high performance, mechanical strength, and advanced separate‑feed capability, the TRI12‑SF Separate Feed Yagi Antennas become indispensable partners for serious Amateur Radio operators seeking powerful and flexible triband performance.

TRI12 20/15/10 Features and Specifications:

• RF Choke Balun: (3) 3kW included

• Bandwidth@ S.W.R. ≤ 1.5:1:

20M – 350kHz

15M – 450kHz

10M – 800kHz

• Longest element: 36.09ft. (1100cm)

• Power Handling: 10kW

• Wind Area: 13.35 sq. ft. (1.24m²)

• Wind Load: (80 MPH): (1012N) 746.41 ft. lbs.

• Wind Survival*: 100 Mph (160 Km/h)

• Tower Leg/Mast Diameter: 2.0-2.36in. (50/60mm)

• Tower Lift Side: 3.28ft. (100cm) Weight: 125.66lbs. (57kg)

• Feedline Connector: (3) 50-Ohm UHF SO-239 female

• Tubes and Plates: Aluminum alloy 6061T6

• Hardware: stainless steel

• Insulating Clamps: polypropylene, UV resistant