M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2018 M2 Antenna Systems Incoporated
5/23/18
REV A
Model ......................................... 420-50-11
Frequency Range ....................... 420 To 450 MHz
*
Gain .......................................... 13.44 dBi
Front to back .............................. 20 dB Typical
Beamwidth ............................... E=34° H=43°
Feed type ................................... Folded Dipole
Feed Impedance. ....................... 50 Ohms Unbalanced
Maximum VSWR ........................ 1.2:1 Typical
Input Connector .......................... “N” Female
Power Handling .......................... 1 kW
Boom Length / Dia ...................... 60” / 1”
Maximum Element Length .......... 13-3/4”
Turning Radius: .......................... 55”
Stacking Distance ....................... 34” High & 36” Wide
Mast Size .................................... 2” Nom.
Wind area / Survival ................... 0.6 Sq. Ft. / 100 MPH
Weight / Ship Wt. ........................ 4 Lbs. / 6 Lbs.
M2 Antenna Systems, Inc.
Model No: 420-50-11
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd
FEATURES:
The 420-50-11 has been computer designed to cover the entire amateur 70 CM band. It is ideal for repeater link-
ing or any point to point application. Comparing it to a common reference, the KLM 420-450-11, it has the same usable
bandwidth with a full one dB more gain and the pattern is much cleaner. Clean patterns in most applications provide more
reliable communications with less intermod. An optional stacking harness is available when more than one antenna is
required for reduced beamwidth or additional gain. Because the antenna covers the whole band, many users find it a nat-
ural for ATV and general repeater use. Users are surprised by the performance of this compact but potent antenna.
Construction is classic M
2
for long term electrical and mechanical integrity. Elements are 3/16” 6061-T6 rod,
mounted through the boom on UV stabilized insulators and locked in place with stainless steel shaft retainers. The driven
element module is CNC machined and all connectors O-ring sealed. Internal connections are encapsulated in a space-
age silicone gel with nearly 4 times the dielectric strength of air. Balun connectors are triple-sealed to the coax.
Summary of Contents for 420-50-11
Page 4: ...420 50 11 DIMENSION SHEET...
