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 Incoporated
08/16/22
Model ......................................... 420-450-11HP
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
Input Connector .......................... “N” Female
Power Handling .......................... 3 kW
Boom Length / Dia ...................... 60” / 1-1/2”
Maximum Element Length .......... 40-5/8”
Stacking Distance ....................... 28”
Mounting ..................................... 1-1/2” to 2” Nom.
Wind area / Survival ................... 0.1 Sq. Ft. / 125 MPH
Weight / Ship Wt. ........................ 6 Lbs. / 7 Lbs.
M2 Antenna Systems, Inc.
Model No: 420-450-11HP
FEATURES:
The 420-450-11HP is the high powered version of the standard model 420-450-11. The driven element has been engi-
neered to handle up to 3 kW PEP. Computer optimization has allowed the antenna to cover the entire amateur 70CM
band. It is ideal for repeater linking 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 on dB more gain and the pattern is much cleaner. Clean patterns in
most applications provide more reliable communications with less inter-mod. 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 fit it a natural for ATV and general repeater use. Users are surprised by the performance of this
compact but potent antenna.
Construction is classic M2 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 are O-ring sealed. Internal connections are encapsulated in a space-age
silicone gel.
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd