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SPECIFICATIONS:
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
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
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.
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
M2 Antenna Systems, Inc.
Model No: 420-50-11
*Subtract 2.14 from dBi for dBd
2
for long term electrical and mechanical integrity. Elements are 3/16" 6061-T6 rod,
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2018 M2 Antenna Systems Incoporated
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.
5/23/18
REV A
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Table of Contents
Related Manuals for M2 Antenna Systems 420-50-11
Summary of Contents for M2 Antenna Systems 420-50-11
- Page 1 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.
- Page 2 420-50-11 ASSEMBLY MANUAL Tools handy for assembly process: screwdriver, 11/32” spin-tite or socket, 7/16” and 1/2” end wrenches / sockets, measuring tape. 1. This antenna uses a one-piece boom. A factory installed 7/8” x 29” sleeve provides additional boom strength for rear mounting the antenna. Check that sleeve is in position, flush with rear end of boom and all holes are aligned with boom.
- Page 3 420-50-11 ASSEMBLY MANUAL tube, supplied in the kit), internal fingers on retainer dished into tube. HOLD THE ELEMENT FIRMLY TO PREVENT IT FROM SLIDING OFF CENTER and press the retainer onto the element end and continue until retainer butts on insulator button. Locking pliers, lightly clamped up against opposite button insulator will help maintain center reference.
- Page 4 420-50-11 DIMENSION SHEET...
- Page 5 420-50-11 PARTS & HARDWARE SLEEVE, 7/8 X .058 X 29” (factory installed) ..1 ELEMENTS, 3/16 ROD x Dimension Sheet ..11 DRIVEN ELEMENT BLOCK ......1 BALUN, RG-6 1/2 WAVE ........1 BOOM-TO-MAST PLATE, .188 X 3” X 4” ..1 U-BOLT AND CRADLE, 2”...
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