Momobeam Mono4-17 Monoband Yagi Antennas are full‑size, four‑element Yagi antennas designed to deliver excellent SWR bandwidth, optimal gain, and impressive front‑to‑back performance. These antennas remain lightweight for effortless handling while offering the strength needed to withstand harsh weather conditions.

Built on a square boom, they are supplied with an assembly tool, spare hardware components, and clearly labeled bolts and aluminum tubes to ensure fast and intuitive assembly. All hardware is packaged in separate, clearly marked bags for added convenience. Mono4-17 can be mounted on a mast or side‑mounted on towers and require a medium‑duty rotator.

A 3kW RF choke balun is included as standard equipment—an essential component that many manufacturers offer only as an optional upgrade. Momobeam RF Chokes are built using high‑quality, low‑loss, double‑shielded coaxial cable with a Teflon dielectric, combined with carefully selected ferrite material sleeved over the cable. Together, these elements create a high‑impedance path for RF, providing excellent isolation between the antenna and the coaxial feedline.

MONO4-17 Features and Specifications:

• RF Choke Balun: 3kW included

• Bandwidth@ S.W.R. ≤ 1.5:1: 450kHz

• Longest element: 27.70ft. (844cm)

• Power Handling: 10kW

• Wind Area: 8.61 sq. ft. (0.8m²)

• Wind Load: (80 MPH): (815N) 601.11 ft. lbs.

• Wind Survival*: 100 Mph (160 Km/h)

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

• Tower Lift Side: 1.64ft. (50cm) above the tower top

• Weight: 46.30lbs. (21kg)

• Feedline Connector: (1) 50-Ohm UHF SO-239 female

• Tubes and Plates: Aluminum alloy 6061T6

• Hardware: stainless steel

• Insulating Clamps: polypropylene, UV resistant