M2 Antenna Systems 2M4X Assembly Manual

SPECIFICATIONS:

Model ......................................... 2M4X
Frequency Range ....................... 144 To 148 MHz
*Gain .......................................... 9.6 dBi
Front to back .............................. 20 dB Typical
Beamwidth ............................... E=54° H=74°
Feed type ................................... "T" Match
Feed Impedance. ....................... 50 Ohms Unbalanced
Maximum VSWR ........................ 1.5:1
Input Connector .......................... "N" Female

FEATURES:

M2 is always trying to design and build new antennas to fit the needs of amateur radio operators. The "X" series of antennas are all designed
to keep the packaging under 48" 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. The 2M4X replaces our very popular 2M4.
Each models performance is optimized for a specific mode and frequency range, with no compromises to achieve unneeded bandwidth. The
2M4X covers 144-148 MHz .Where do you want to make yourself heard? The 2M4X is an ideal building blocks for a small turning radius, high-gain
stacked array. Great for QTH's that won't permit a long boom Yagi. The 2M4X can be stacked on a cross boom for the same gain increases, and the
turning radius is still a very manageable 10 ft.
The heart of these antennas 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 4 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" solid rod with UV stabilized polyethylene Button insulators and stainless steel keepers. Thousands of these type ele-
ments are in amateur and commercial service with NO failures! Booms are constructed of 6061-T6 aluminum alloy tubing. Other key electrical and me-
chanical components are CNC machined for accuracy and durability. All hardware is stainless steel except the U-bolts. For uncompromising perfor-
mance and long term electrical / mechanical integrity, the 2M4X is unmatched.
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
M2 Antenna Systems, Inc.
Model No: 2M4X
*Subtract 2.14 from dBi for dBd
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2022 M2 Antenna Systems Incorporated
Power Handling .......................... 1.5 kW
Boom Length / Dia ...................... 48" / 1"
Maximum Element Length .......... 40-1/2"
Turning Radius: .......................... 55"
Stacking Distance ....................... 66" High & 80" Wide
Mast Size .................................... 1-1/2" to 2" Nom.
Wind area / Survival ................... 0.50 Sq. Ft. / 100 MPH
Weight / Ship Wt. ........................ 3 Lbs. / 4 Lbs.
11/29/21
Rev.01