Maco M107

The Maco M107 is a 7-element directional Yagi beam antenna designed for high-performance base station communication on the 10 and 11-meter bands. It features an adjustable gamma match for optimal SWR and can be mounted for both vertical and horizontal polarization.
Specifications
According to information from Maco Antennas and various retailers, the Maco M107 antenna includes the following specifications:
Specification Detail
Tuning 10/11 Meters
Number of Elements 7
Gain 17 dB (or 17.5 dBi depending on source)
Power Multiplication 55x
Front-to-Back Separation 36 dB
Boom Length 11.43 meters (37.5 feet)
Turn Radius 6.7 meters (22 feet)
Power Handling 2 kW (standard, upgradeable to 5, 10, or 30 kW with optional gamma matches)
Wind Survival 135 km/h (90 mph)
Construction Rugged, swaged, and slotted aluminum tubing for strength and minimal wind loading
Key Features and Performance
Versatile Mounting: The M107 can be mounted for either vertical or horizontal polarization, allowing for effective communication with both mobile and other base stations.
Adjustable Gamma Match: It includes a 52 Ohm adjustable gamma match, which ensures optimal SWR (Standing Wave Ratio) and high performance, easily tunable by the user.
Durable Build: The antenna is noted for its rugged construction using aircraft alloy 6063-T5 aluminum tubing, with full compression element clamps that avoid drilling holes in the elements or boom, increasing durability.
High Performance: User reviews and expert opinions praise the M107 for its “outstanding” transmit capability and “very good” rejection, with one user noting they had a Maco beam up for over 35 years.