Maco M108

The Maco M108 is an 8-element, directional Yagi base station antenna designed for high performance on the 10 and 11-meter radio bands. It is known for its rugged aluminum construction and long boom length, offering significant gain for long-distance communication (DXing).
Key Specifications
According to various sources, including the manufacturer’s information via Maco Antennas and other retailers, the specifications for the Maco M108 (including the M108C variant) are as follows:
Tuning Frequency: 10-11 meters (CB radio and amateur radio bands).
Elements: 8 elements.
Design: Classic directional Yagi beam, mountable for either vertical or horizontal polarization.
Gain: Advertised as 18 dB, which is a 60x power multiplication. (Note: some expert opinions suggest actual gain is closer to 9 dBd).
Boom Length: 40 feet.
Longest Element: 19 feet.
Turn Radius: 24 feet.
Wind Survival: Rated for 90 mph winds.
Surface Area/Wind Load: 15 sq. ft..
Weight: 60 lbs.
Power Handling: Features an adjustable gamma match designed for up to 2kW of power.
Construction: Rugged, using swaged and slotted aluminum tubing for strength.
User & Expert Opinions
Performance: Users often praise the M108 as a “great beam” that does a good job, with some saying it is the “best antenna for the money”. It’s a popular choice for those looking for high performance on the CB and 10-meter bands. The dual-polarity version (M108HV) is particularly noted for its versatility.
Durability: The antenna is generally considered well-made and uses solid materials. Some long-term users have reported their antennas lasting for many years.
Assembly: The antenna comes with detailed instructions and a parts list, and the manufacturer’s staff have been noted as helpful with questions. The manufacturer recommends deburring rough edges during assembly and using a silicone sealant on hardware to prevent loosening from wind vibration.
Critiques: Some technical experts argue that Maco’s advertised gain figures are exaggerated and that the design could be more optimized. There are also recommendations to replace the supplied hardware with stainless steel for better long-term durability.

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