M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2014 M2 Antenna Systems Incorporated
01/14/14
Rev.02
Model ........................................ 12M4DX
Frequency Range ...................... 24.890 To 24.990 MHz
*
Gain, (FS) / Over gnd ............... 10.7dBi / 16.4dBi @40’
Front to back .............................. 20 dB Typical
Beamwidth ............................... E=48° / H=58°
Feed type ................................... Hair pin match
Feed Impedance........................ 50 Ohms Unbalanced
Maximum VSWR ....................... 1.2:1
Input Connector ......................... SO-239, Others avl.
Power Handling ......................... 3 kW, Higher avl.
Boom Length / Dia ..................... 27’ / 2”
Element Length / Dia. ................ 21.25’ / 7/8” To 1/2”
Turning Radius: ......................... 16’ 8”
Stacking Distance ...................... 35’ To 41’
Mast Size ................................... 2” to 3 ” Nom.
Wind area / Survival .................. 4.4 Sq. Ft. / 100 MPH
Weight / Ship Wt. ....................... 28 Lbs. / 39 Lbs.
M2 Antenna Systems, Inc.
Model No: 12M4DX
FEATURES:
The 12M4DX is a great performer for its size. It was designed for low wind area but rugged and lightweight and it
will save you a bundle on shipping. IT’S UPSABLE! like all our “DX” series. The computer optimized design allows full
band coverage with good gain and front to back. Performance is excellent on both the CW and phone. Mechanically,
CNC machined aluminum (6061-T6) ring clamps ground the elements to the boom and make assembly a snap. A hairpin
type match couples the 3 kW 1: balun to the feed line. The antenna is completely DC grounded. The 12M4DX is also
great for stacking, providing 3 dB increased gain not to mention the lower angle of radiation. The 12M4DX is a perfect
stacking partner for our other “DX series Yagis like the 20M4DX and 10M4DX. Put the 12M4DX to the test in the new cy-
cle!
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd / FS = Free Space
Summary of Contents for 12M4DX
Page 4: ...12M4DX DIMENSION SHEET ...
