M2 Antenna Systems 2M8WL Assembly Manual

M2 Antenna Systems 2M8WL Assembly Manual

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SPECIFICATIONS:
Model ......................................... 2M8WL
Frequency Range ....................... 144 To 144.6 MHz
*Gain .......................................... 18.5 dBi
Front to back .............................. 26 dB Typical
Beamwidth ............................... E=20° H=21°
Feed type ................................... "T" Match
Feed Impedance. ....................... 50 Ohms Unbalanced
Maximum VSWR ........................ 1.5:1
Input Connector .......................... "N" Female
FEATURES:
The 2M8WL provides the user with not just improvements in gain and front to back ratio but also features a robust
boom design, making the antenna capable of handling winds over 100 MPH. The 2M8WLHD features the same highly
reliable, CNC machined, driven element components used on our other VHF and UHF yagis. The boom tapers from 2.5"
in the 23 foot middle section to 1.5" at the rear and front. It is top guyed with dacron cord. A single 2M8WL provides the
gain requirement to make EME contacts with even small 4 yagi stations. It passes the echo test by producing its own
audible echoes even when pointed up with no ground gain! Obviously it is dynamite on Tropo! There's absolutely nothing
else like it.
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
M2 Antenna Systems, Inc.
Model No: 2M8WL
*Subtract 2.14 from dBi for dBd
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2009 M2 Antenna Systems Incoporated
Power Handling .......................... 2.5 kW
Boom Length / Dia ...................... 55' / 2-1/2" To 1-1/2"
Maximum Element Length .......... 21-3/16"
Turning Radius: .......................... 29'
Stacking Distance ....................... 17' High & 17' Wide
Mast Size .................................... 1-1/2" to 2" Nom.
Wind area / Survival ................... 5.5 Sq. Ft. / 100 MPH
Weight / Ship Wt. ........................ 50 Lbs. / 59 Lbs.
5/8/09
Rev.00

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Summary of Contents for M2 Antenna Systems 2M8WL

  • Page 1: Specifications

    CNC machined, driven element components used on our other VHF and UHF yagis. The boom tapers from 2.5" in the 23 foot middle section to 1.5" at the rear and front. It is top guyed with dacron cord. A single 2M8WL provides the gain requirement to make EME contacts with even small 4 yagi stations.
  • Page 2 TOOLS REQUIRED: Screwdriver, 11/32 wrench, socket or spintite, a 7/16" and 1/2" wrench or socket, tape measure. Please review these instructions and the 2M8WLHD DIMENSION SHEET before assembly. 1. BOOM ASSEMBLY Refer to the 2M8WLHD DIMENSION SHEET as a guide. Note the FRONT and REAR locations of the antenna and that it is pictured looking from underneath.
  • Page 4 6. BALUN INSTALLATION Before installing the balun, thread a 3/8” SEAL NUT all the way onto both connectors, with the black Neoprene face of the nuts facing out. Attach balun to the Block and tighten the connectors gently using a 7/16"...
  • Page 5 TURNBUCKLE L-BRACKET to the VERTICAL RISER OR to your mast. The Riser will enable you to install the antenna at the very top of your mast, should you require it. It also allows the boom to be straight in two dimensions.
  • Page 6 of gain. B. To optimize the performance from this high quality antenna, always use high quality coax and connectors, as old, corroded, or poor quality materials are common sources of performance losses. C. If possible, test the antenna, connectors and feedline BEFORE installing to your mast or tower. At 6 feet or more the antenna will exhibit VSWR similar to higher mounting heights.
  • Page 7 2M8WLHD PARTS LIST 1-10-00 REV. 7-11-00 DESCRIPTION BOOM SECTION, 2.5 x .125 x 95” SBE ....1 BOOM SECTION, 2.5 x .125 x 95” SOE ....2 BOOM SECTION, 2 x .065 x 95” SOE ..... 2 BOOM SECTION, 2 x .065 x 48” SOE ..... 2 BOOM SECTION, 1-1/2 x .065 x 60”...

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