Maco M103C-HV Dual Polarity Beam

The Maco M103C-HV (also known as the M103HV) is a high-performance, 6-element dual-polarity Yagi beam antenna designed for the 10-meter (Amateur) and 11-meter (CB) radio bands. It is essentially two 3-element beam antennas mounted on a single boom, allowing for simultaneous horizontal and vertical polarization.
Key Features & Performance
Dual Polarization: Features both vertical and horizontal elements on one 11.5-foot boom. You can tune the vertical side for one band (e.g., 11m CB) and the horizontal side for another (e.g., 10m Ham), or both for the same band.
Gain & Power: Provides a gain of 11 dB and a 20x power multiplication factor. It typically comes with a 2,000-watt gamma match but can be upgraded with optional Maco gamma matches to handle up to 30,000 watts.
Construction: Built with rugged, swaged, and slotted telescopic aircraft-grade aluminum for high strength and low wind loading.
Directionality: Offers a high front-to-back separation of 25 dB, effectively rejecting signals from the rear to focus your transmission and reception.
Technical Specifications
Feature Specification
Elements 6 (3 Horizontal, 3 Vertical)
Boom Length 11.5 feet
Turn Radius 10 feet
Longest Element 19 feet
Wind Survival 90 mph
Wind Surface 3.99 – 4.5 sq. ft.
Weight Approximately 21 lbs