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M2 Antenna Systems 80M2L Installation Instructions Manual

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SPECIFICATIONS:

Model ........................................ 80M2L
Frequency Range switchable .... 3.50-3.565 & 3.75-3.82
Gain ........................................... 6.0 dBi Free space
Front to back .............................. 15 dB
Beamwidth ............................... E=71°
Feed type ................................... Hair pin match
Feed Impedance........................ 50 Ohms Unbalanced
Maximum VSWR ....................... 1.2:1 / 2:1@band edges
Input Connector ......................... SO-239, Other avl.
FEATURES:
The recently computer upgraded and improved 80M2L is now even better, both mechanically and electrically.
Gain is up by .6 dB over older versions and efficiency is now over 95%! This is accomplished by using low loss 3/8" alu-
minum tube for the linear loading elements. Element halves start with 3" diameter tubing and taper through 2", 1-3/4", 1-
1/2", 1-1/4", 1" and 3/4", 1/2" sections to the 3/8" tips. Machined saddle clamps have replaced the U-bolts previously
used. A solid 2" O.D. Fiberglass rod, sleeved to the 3" elements, serves as the center insulator.
The new, highly efficient 3/8" tube linear loading system is supported above the boom and out of the element
plane to reduce inductive cancellation, provide element support, and minimize excessive element droop. New, rugged
linear loading shorting bars now allow easier assembly and adjustment. A weather proof fiberglass housing now protects
the 5 kW 1:1 balun, the relays for phone-CW switching and the high Q (600+) CW band coils. These top quality compo-
nents are now accessible for frequency adjustments in the 3.5 to 3.6 MHz section of the band. Relays requires 12 VDC at
0.3A supply. Look forward to outgunning even the best of the 4 squares! Parts are available for upgrading older 80M2's.
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
M2 Antenna Systems, Inc.
Model No: 80M2L
*Subtract 2.14 from dBi for dBd
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2014 M2 Antenna Systems Incorporated
Power Handling ......................... 3 kW, Higher avl.
Boom Length / Dia ..................... 29.5' / 3.0 x .125 Wall
Element Length / Dia. ................ 105 Ft / 3" to 1/2"
Turning Radius: ......................... 55' Ft
Stacking Distance ...................... Call
Mast Size ................................... 2" to 3 " Nom.
Wind area / Survival .................. 19.5 Sq. Ft. / 100 MPH
Weight / Ship Wt. ....................... 200Lbs. / 295 Lbs.
9/12/12
Rev.02

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Summary of Contents for M2 Antenna Systems 80M2L

  • Page 1: Specifications

    FEATURES: The recently computer upgraded and improved 80M2L is now even better, both mechanically and electrically. Gain is up by .6 dB over older versions and efficiency is now over 95%! This is accomplished by using low loss 3/8” alu- minum tube for the linear loading elements.
  • Page 2 80M2L ASSEMBLY MANUAL OVERVIEW: Feel free to change order of assembly to fit your space needs. Once fully assembled or even in pieces, this antenna is LONG. Assemble the center section to the 2” diameter point. Then assemble the element tip sections from the 1-3/4 inch diameter section out. Use the length and hardware sizes called out on the DIMENSION AND ASSEMBLY DRAWING.
  • Page 3 80M2L ASSEMBLY MANUAL 6. Insert each 2-3/4 x 8” fiberglass sleeve insulator into the outer end of the 3” element butts and add the 1 -4-20 x 3-1/2” bolts and locknuts finger tight. NOTE: The REFLECTOR requires a special 3” X .125 X 180”...
  • Page 4 80M2L ASSEMBLY MANUAL 11. Now, begin tensioning the linear loading tubes using the turnbuckles. If you run out of adjustment, relax the turnbuckle again and pull more slack with the cord. Then re-tighten the clips and tension again with the turnbuckles. Adjust tension until each INNER 3” element is flat and not bowed up.
  • Page 5 80M2L ASSEMBLY MANUAL 17. Insert the 3/8 x 72” HAIRPIN tubes into the block connectors on the driven element relay switch box , align the tubes and lightly tighten one set screw in each block with an 1/8” Allen wrench. Add 2 set screws to the HAIRPIN SHORTING BAR and slide the bar onto the ends of the tubes.
  • Page 6 80M2L ASSEMBLY DETAILS...
  • Page 7 80M PHONE/CW SWITCHING OPTIONS...
  • Page 8 80M2L DIMENSION SHEET...
  • Page 9 GENERIC COMPRESSION CLAMP DETAIL...
  • Page 10 80M2L PARTS & HARDWARE DESCRIPTION ................QTY Boom section 4 X .125 X 180" ALUM. TUBE ......... 2 Boom Splice, bushed, 3.5 x 60” alum ..........1 Inner Element , 3 X .125 X 180" (Reflector) ........2 Inner Element, 3 x .125 x 180” (Driven Element) ......2 Inner Element Extension (Reflector) 3 X .125 X 41”...
  • Page 11 80M2L PARTS & HARDWARE HARDWARE BAGS ............... QTY Bolt, 3/8-24 x 5-1/2 hex head zinc ..........12 Bolt, 3/8-16 x 4-1/2 hex head stainless ......... 4 Bolt, 3/8-16 x 3-1/2 hex head stainless ......... 12 Locknut, 3/8-16 stainless .............. 16 Locknut, 3/8-24 zinc ...............
  • Page 12 OPTIONAL PHONE BAND DIAGRAM (ONLY 80M) & PARTS LIST 1:1 BALUN, 1:1 HF, 5KW ..........1 PLATE, BALUN MOUNTING ........1 HAIRPIN TUBE, 3/8 X 72, MODIFIED ......2 CLAMP BLOCK, 3/8” ........... 4 U-BOLT AND SADDLE, 2-1/2” ........1 U-BOLT, 2”, SS ............