M2 Antenna Systems 2M4X, Assembly Manual

Page: 1 / 5

M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: (559) 432 - 8873 Fax: (559) 432 - 3059 Web: www.m2inc.com
©2022 M2 Antenna Systems Incorporated
11/29/21
Rev.01
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
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.
M2 Antenna Systems, Inc.
Model No: 2M4X
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.
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd