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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 Incorporated 

1/19/19 

REV 2 

Model  ......................................... 40M3C 
Frequency Range ....................... 7.0-7.3 MHz x 150 kHz 
Typical gain ................................ 7.2 dBi typical 
Front to back ratio ...................... 24 dB typical 
Beamwidth   ............................... 74° 
Feed type ................................... HAIR PIN /1:1 Balun 
Feed Impedance. ....................... 50 Ohms

 

VSWR ......................................... 1.3:1  typical, 2.0:1 max 

 
Connector ................................... SO-239, Other avl. 
Power Handling .......................... 3 KW PEP, Higher avl. 
Boom Length / Dia ...................... 30’ /  3” X .125 
Maximum Element Length .......... 49’ 
Turning Radius: .......................... 28.5’ 
Mast Size .................................... 2” or 3” Nom. 
Wind area / Survival ................... 13.0 Sq. Ft. / 100 MPH 

M2 Antenna Systems, Inc. 

Model No: 40M3C 

SPECIFICATIONS: 

*Subtract 2.14 from dBi for dBd / FS = Free Space 

FEATURES:  

 
The new 40M3C is a new exciting antenna. 

M

2

 engineers developed a new coil using 3/16” copper wire with an aluminum 

core. The result is a lightweight inductor with great power handling and a Q near 1000. The coil has a weather cover 
made from polyethylene protecting the coil from birds, weather and snow build up. This allows for an almost lossless    
REDUCED SIZE element. Countless hours have been spent optimizing all of our 40 meter antennas using this new coil 
technique. The 40M3C uses simple element tip adjustments for optimizing performance for any part of the 40M band in 
150 kHz steps. The 40M3C uses all of the same high quality hardware and machine parts that all of customers have 
come to know. The 40M3C also has an optional 17m add on kit that uses a single feed point for both 40M and 17M. Don’t 
miss the best part of the cycle, contact M2 for some help today.

 

Содержание 40M3C

Страница 1: ...ES The new 40M3C is a new exciting antenna M2 engineers developed a new coil using 3 16 copper wire with an aluminum core The result is a lightweight inductor with great power handling and a Q near 10...

Страница 2: ...cess to meet specific site requirements A quick review of the assembly drawings should help firm up the appropriate strategy Please remember to double check all hard ware for tightness BEFORE it becom...

Страница 3: ...4 ELEMENT SECTION 3 M2AEP40MC 3 ELEMENT SECTION 5 M2AEP40MC 5 ELEMENT TIP SAEL40MCDD LENGTH VARIES DEPENDING ON ELEMENT 2 QTY SCREW 8 32 X 1 LOCK NUT ELEMENT SECTION 6 M2AEP40MC 6 COIL ASSEMBLY ELEMEN...

Страница 4: ...A1550 COIL SUPPORT M2ACA1554 COIL INSULATOR M2AFG0050 COIL POST M2ACA1551 QTY 2 ELEMENT SECTION 6 M2AEP40MC 6 COIL END CAP M2ACA1552 QTY 2 ELEMENT SECTION 4 M2AEP40MC 4 NOTE COVER REMOVED FOR ILLUSTRA...

Страница 5: ...P 4 Begin threading the COIL onto one end of the COIL SUPPORT BE CAREFUL to not deform the COIL during this process The COIL should thread smoothly Continue until about 5 1 2 turns are past the COIL S...

Страница 6: ...The distance between each turn should be the same as the COIL diameter Once the COIL is straight and aligned tighten the final SET SCREW securely STEP 9 Slide COIL COVER and COIL END CAPS onto COIL A...

Страница 7: ...l amount of PENTROX Refer to the drawing below and assemble BOOM SECTIONS as shown Insert hardware and tighten STEP 12 Add the eye bolts into the open hole on boom sections 1 4 SCREW 1 4 20 X 3 1 2 LO...

Страница 8: ...water will help in assembly 40M3C ELEMENT MOUNT ASSEMBLY INSTRUCTIONS BOLT 1 4 20 X 2 3 4 LOCKNUT 1 4 20 QTY 4 ELEMENT MOUNTING PLATE M2AEC0040 QTY 2 ELEMENT CENTER SPLICE M2ASR0050 ELEMENT MOUNT ASS...

Страница 9: ...ELEMENT TIP for the appropri ate element then mark the element assembly to avoid confusion later See GENERIC COMPRESSION CLAMP DETAIL page for more detail STEP 21 Tensioning the element over head guy...

Страница 10: ...M2ADP6675 QTY 2 SHORTING BAR M2AHP0262 SPACER 3 8 X 1 M2ASR0010 BAND CLAMP 52 W HOLE BOLT 1 4 20 X 2 AND LOCKNUT SET SCREW 1 4 20 X 1 4 QTY 2 ELEMENT MOUNTING PLATE M2AEC0040 QTY 2 ELEMENT MOUNTING P...

Страница 11: ...s of each element and lightly tighten STEP 24 Standing at one end of the antenna sight down the boom and reference each element to one another making sure each element is parallel to one another make...

Страница 12: ...7 300 MHz RELECTOR 52 50 47 50 45 50 DRIVEN ELE 39 50 35 50 33 00 DIRECTOR 1 34 50 30 50 28 50 HAIR PIN SHORT BAR POSITION 55 00 55 00 55 00 DRIVEN ELEMENT DIRECTOR ELEMENT SEE CHART THE HAIR PIN SHO...

Страница 13: ...GENERIC COMPRESSION CLAMP DETAIL...

Страница 14: ...fter final adjustments of knots and lock blocks use electrical tape to tape the excess rope down to the main rope as prevention for rope slippage LOCK BLOCK AND KNOT DETAIL LOCK BLOCK ROPE ROUT DETAIL...

Страница 15: ...T0070 1 PENETROX ZINC PASTE CUP 1 ASSEMBLY MANUAL 1 BAG 1 40M COIL 15 1 2 TURNS M2ACA1550 6 COIL POST 500 X 500 X 1 187 ALUMINUM M2ACA1551 12 COIL END CAP 3 625 X 625 UMHW M2ACA1552 12 COIL COVER 3 29...

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