Overview

M2 Antennas 2M9X 2 Meter Yagi Antennas

M2 Antennas 2M9X 2 Meter Yagi Antennas provide two sets of elements to build either a horizontally polarized SSB-CW-Digital beam or a vertically polarized FM beam, replacing the separate 2M9SSB and 2M9FM.

Performance is optimized for a specific mode and frequency range, with no compromises to achieve unneeded bandwidth. The 2M9X SSB covers 144-146 MHz and the 2M9X FM covers 145-148 MHz. Where do you want to make yourself heard? Both models are ideal building blocks for a small turning radius, high-gain stacked array. Two horizontally polarized, vertically stacked 2M9Xs yield the same gain (14.8 dBd) as M2's 33 ft. 2M5WL, but with about 1/2 the turning radius. Great for QTHs that won't permit a long boom Yagi. The 2M9X can be stacked on a cross boom for the same gain increases, and the turning radius is still a very manageable 10 ft.

Always designing and building new antennas to fit the needs of amateur radio operators, the "X" Series of antennas were redesigned to keep the packaging under 48 in. long, to minimize oversize surcharges applied by shippers. The "X" Series antennas offer the same performance as its predecessor, but with shorter boom sections. The boom sections also have a thicker wall for added strength. A side benefit of the "X" Series antennas are that they are more portable with the smaller sections.

At the heart of M2 Antennas VHF beams is a driven element module originally designed for maritime ATS satellite service. All connectors are O-ring sealed to the CNC-machined block. Internal connections are sealed with a space-age silicone gel with nearly four times the dielectric strength of air. The balun connectors are triple sealed on the coax and nut-sealed at the block connectors. The type N feed connector uses a gold-plated, beryllium copper center pin.

Elements are 6061-T6 3/16 in. solid rod with UV stabilized polyethylene Button insulators and stainless steel keepers. Thousands of these type elements are in amateur and commercial service with NO failures! Booms are constructed of 6061-T6 aluminum alloy tubing. Other key electrical and mechanical components are CNC machined for accuracy and durability. All hardware is stainless steel except the U-bolts. For uncompromising performance and long-term electrical and mechanical integrity, the 2M9X is unmatched.

Specifications the M2 Antennas 2M9X:

Frequency range (2M9X SSB): 144 To 146 MHz
Frequency range (2M9X FM): 145 To 148 MHz
Gain: 14.1 dBi
Front to back: 20 dB Typical
Beamwidth: E=35 degrees; H=38 degrees
Feed type: "T" match
Feed impedance: 50 Ohms unbalanced
Maximum VSWR: 1.2:1 typical
Input connector: N female
Power handling: 1.5 kW
Boom length/diameter: 14 ft. 6 in./1 to 3/4 in. OD
Maximum element length: 40 5/8 in.
Turning radius: 8 ft.
Stacking distance: 9 ft. 6 in. High and 10 ft. Wide
Mast Size: 1 1/2 to 2 in. Nom.
Wind area/survival: 1.2 sq. ft./100 mph
Weight/ship weight.: 5 lbs./7 lbs.

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