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
3/21/13
Rev.03
Model ........................................ 40M1L
Frequency Range tune able ...... 6.9-7.3 MHz X 200 kHz
*
Gain, (FS) / Over gnd ............... 1.75 dBi / 7.2 dBi @ 70’
Front to side ............................... 15-20 dB Height depend
Beamwidth ............................... E = 84° H = N/A
Feed type ................................... Direct Feed
Feed Impedance........................ 50 Ohms Unbalanced
Maximum VSWR ....................... 2.0:1
Input Connector ......................... SO-239 Others avl.
Power Handling ......................... 3 kW Higher avl.
Boom Length / Dia ..................... N/A
Element Length / Dia. ................ 46’ / 1 1/2” to 1/2”
Turning Radius: ......................... 23’
Stacking Distance ...................... 85’ Max
Mast Size ................................... 2” to 3 ” Nom.
Wind area / Survival .................. 3 Sq. Ft. / 100 MPH
Weight / Ship Wt. ....................... 22 Lbs. / 25 Lbs.
M2 Antenna Systems, Inc.
Model No: 40M1L
FEATURES:
This simple antenna combines 15 years of design and field experience with CNC machined parts to become the worlds
best rotatable, reduced size dipole. Everything we have learned about linear loaded dipoles and structural reliability has
been designed into the 40M1L. We just stretched it a bit and broad banded it to cover at least 250 kHz or more. We also
have added an option to make it a dipole on 17 meters as well. The center insulator is a solid 1-1/4 inch fiberglass rod.
There is nothing here to weaken or break from the effects of sun, wind or ice loading.
The linear loading elements have been lifted slightly above the main element to eliminate the tension/compression prob-
lems of other designs. The linear loading also lifts the whole element slightly virtually eliminating droop. Newly designed
shorting bars make assembly and adjustment easier and quicker. If desired, optimizing inside the 40 meter band is done
with 1/2” tip adjustment. A Husky 1:1 balun delivers all your transmit power to the antenna with no feed line radiation or
pickup.
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd / FS = Free Space
