M2 Antenna Systems 40M3C Manual de usuario

M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722

Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com

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. M2engineers 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.

40M3C ANTENNA OVERVIEW

BEFORE YOU BEGIN: Look over all the DRAWINGS to get familiar with the various parts and assem-

blies in the system. Tools handy for assembly process: screwdriver, 11/32”, 7/16”, 1/2”, 9/16” and 5/8”

spin-tites, end wrenches and/or sockets, and a measuring tape.

Note:

All installations are unique in some way, which means it's OK to preassemble certain hardware, or

rearrange the assembly process 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 becomes inaccessible.

One container of zinc paste (Penetrox, Noalox, or equiv.) has been provided to enhance and

maintain the quality of all mechanical and electrical junctions on this system. Apply a thin coat

wherever two pieces of aluminum come in contact or any other electrical connections are made.

It is also useful on screws and bolt threads as an ANTI SEIZE compound.

REFLECTOR

DRIVEN

ELEMENT

DIRECTOR

40M ELEMENT HALF OVERVIEW

ELEMENT MOUNTING

PLATE

(M2AEC0040)

ELEMENT CLAMP

(M2AMC0136)

ELEMENT SECTION #1

(M2AEP40MC-1)

ELEMENT SECTION #4

(M2AEP40MC-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

ELEMENT SECTION #2

(M2AEP40MC-2)

INSIDE ELEMENT SECTION #1

2 (QTY) SCREW,

8-32 X 1-1/2”

& LOCK NUT

2 (QTY) SCREW,

8-32 X 1-3/4”

& LOCK NUT

BOLT,

1/4-20 X 2”

& LOCK NUT

40M COIL OVERVIEW

40M COIL

(M2ACA1550)

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 ILLUSTRATION PURPOSES.

BOOM ELEMENT TIP

40M COIL ASSEMBLY

INSTRUCTIONS

STEP 1:

The coil comes wound tight with 16 total turns from the factory. The excess

material will be trimmed off after the coil is in its final position. Using a permanent

marker, draw a straight line from one end of the coil to the other. This will help later

to determine if your coil has grown in diameter during assembly. After final position-

ing of the coil no more 3/4 of an inch of line tilt is allowed. A larger coil will cause the

inductance to change which can cause your antenna to be off frequency.

STEP 2:

The COIL is wound tight at the factory to prevent damage during shipping. Use the

COIL SPREADING TOOL provided, and carefully insert it into the first turn of the

COIL. Now gently push or roll the tool through all 16 turns of the COIL. Now the

COIL is nearly in its final shape and is ready to be threaded onto the COIL SUP-

PORT. Note the reference line drawn earlier, it will have a slight tilt after spreading.

STEP 3:

On one end, use pliers to gently straighten the last 1/2” of the COIL and file

off any burrs.

STEP 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 SUPPORT or close to the

center. Exact centering is not important. Again, note your reference line.

NOTE: PENETROX PASTE FOR LUBRICATING SCREW THREADS AND TUBING JOINTS HAS BEEN SUPPLIED. USE A VERY SMALL AMOUNT ON

EACH SCREW THREAD AND UNDER THE COIL POSTS DURING THE NEXT OPERATION.

STEP 5:

Insert the COIL INSULATOR (M2AFG0050) into your COIL SUPPORT (M2ACA1554). Rotate the COIL and the

COIL SUPPORT so the leading end of the COIL goes over and just past the inner hole in the COIL INSULATOR. Now slide

on one COIL POST on to one end of the COIL so it is right over the first hole. Next, carefully slide on the ELEMENT SEC-

TION #6 (M2AEP40MC-6) and align it so both holes in the tube match the two holes in the COIL INSULATOR.

STEP 6:

Insert hardware through the ELEMENT SECTION #6 and the COIL INSULATOR and begin threading it into the

COIL POST. Tighten hardware. Thread the SET SCREW into the top of the COIL POST and with about 1/2” of wire protrud-

ing past the COIL POST, tighten the SET SCREW gently. Use supplied ALLEN WRENCH to tighten the SET SCREW.

1/2” TO 3/4”

TILT

40M COIL ASSEMBLY

INSTRUCTIONS

STEP 7:

The second COIL POST is mounted on the OP-

POSITE SIDE of the COIL INSULATOR so 15 1/2 turns of

the COIL are used. The extra 1/2 turn COIL should pass

over the COIL INSULATOR hole. Slide on the second

COIL POST and align it over the hole. Slide on ELEMENT

SECTION #4 (M2AEP40MC-4) and fasten the COIL POST

to the tubing assembling using the supplied hardware. Use

you reference line and adjust the coil so the line has no

more tilt the 3/4”

STEP 8:

Insert the SET SCREW into the COIL POST and

tighten gently. Adjust the COIL and COIL SUPPORT loca-

tion for equally spaced turns. 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 ASSEMBLY. Secure COIL END CAPS into position by securing

hardware through TUBE ASSEMBLIES on both ends of the COIL ASSEMBLY. Slide ELEMENT OVERHEAD SUPPORT onto

ELEMENT SECTION until it reaches the head of the screw holding on the COIL COVER. Clamp ELEMENT OVERHEAD SUP-

PORT in place with screw and locknut.

STEP 10:

Assemble all the remaining COIL ASSEMBLIES by repeating steps 1-9. Set COIL ASSEMBLIES aside for future use.

COIL (15.5 TURNS)

(M2ACA1550)

COIL INSULATOR

(M2AFG0050)

COIL SUPPORT

(M2ACA1554)

ELEMENT SEC-

TION #4

ELEMENT SECTION #6

(M2AEP40MC-6))

COIL POST

(M2ACA1551)

SCREW, 8-32 X 1-1/4”

SET SCREW, 1/4-20 X 1/4”

STEP 11:

At this point it will be helpful to perform the remaining

assembly steps with the BOOM ASSEMBLY elevated off the

ground (about 3 feet). This can be accomplished by using

sawhorses or something similar. Wipe off the swedged ends of

each BOOM SECTION and apply a small 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”

LOCKNUT, 1/4-20

BOOM

SECTION

BOOM

SECTION

40M3C BOOM ASSEMBLY

INSTRUCTIONS

BOOM SECTION #1 and #4

(M2ABS40M3C-1-4)

(QTY 2)

BOOM SECTION #3

(M2ABS40MC3-3)

(QTY 1)

BOOM SECTION #2

(M2ABS40MC3-2)

(QTY 1)

REAR OF

BOOM

EYE BOLT,

3/8 X 6

AND

LOCK NUT

FRONT OF

BOOM

EYE BOLT,

3/8 X 6

AND

LOCK NUT

STEP 13:

Assemble the ELEMENT MOUNT

assemblies for the reflector and front director

element. Refer to the assembly drawing to aid in

assembly. Be sure to center the ELEMENT

CENTER SPLICE and the holes are in the

vertical position.

STEP 14:

Assemble the DRIVEN ELEMENT

MOUNT assembly for the DRIVEN ELEMENT.

Refer to the assembly drawing to aid in assembly.

Be sure to center the INSULATOR and the hole

are in the vertical position. The DISC

INSULATORS are a press fit. Heating them with

a heat gun or hot 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 ASSEMBLY

REFECTOR OR DIRECTOR

BOLT, 1/4-20 X 2-1/2”

LOCKNUT, 1/4-20

(QTY 4)

CRADLE 3”

(M2AMC0136)

(QTY 2)

VERTICAL RISER

ASSEMBLY

(M2AVR0010)

BOLT, 1/4-20 X 3-1/2”

AND LOCKNUT

(QTY 2)

CRADLE 3”

(M2AMC0136)

(QTY 2)

ELEMENT MOUNTING

PLATE

(M2AEC0040)

(QTY 2)

BOLT, 1/4-20 X 2-1/2”

LOCKNUT, 1/4-20

(QTY 4)

INSULATOR

(M2AFG0034)

VERTICAL RISER

ASSEMBLY

(M2AVR0010)

BALUN BRACKET

(M2APT0016)

DISC INSULATOR

(M2ADI0020)

(QTY 2)

ELEMENT MOUNT ASSEMBLY

DRIVEN ELEMENT

BOLT, 1/4-20 X 2-3/4”

LOCKNUT, 1/4-20

(QTY 4)

BOLT, 1/4-20 X 3-1/2”

AND LOCKNUT

(QTY 2)

NOTE: For the final assembly on all the elements, it is best to perform the next steps on the ground or long flat surface.

This will aid during final adjustment of the ELEMENT OVER HEAD SUPPORT. The ELEMENT HALVES are symmetrical

on both sides. Do each of the following steps on both sides of the ELEMENT.

STEP 15:

Slide ELEMENT SECTION #2 onto ELEMENT CENTER SPLICE or INSULATOR.

STEP 16:

Slide ELEMENT SECTION #1 onto ELEMENT SECTION #2. Insert hardware and tighten locknut. Attach VERTI-

CAL RISER ASSEMBLY. For the driven element you need to add (4) CLAMP BLK, 3/8 (HAIRPIN) (M2AMC0261) and

hardware. See drawings for hardware call out for the different elements.

STEP 17:

Insert ELEMENT SECTION #3 into the end of ELEMENT SECTION #1. Insert and tighten hardware.

STEP 18:

Insert the ELEMENT SECTION #6 of the COIL ASSEMBLY previous assembled in STEPS 1-10 into ELEMENT

SECTION #3. Insert and tighten hardware.

STEP 19:

Insert ELEMENT SECTION #5 into the end of ELEMENT SECTION #4. Insert and tighten hardware.

STEP 20:

To be able to adjust the ELEMENT TIP, a COMPRESSION CLAMP is used. First thread on the hex nut to capture

the screw in the CLAMP. Then slide the COMPRESSION CLAMP such the screw is lined up with the hole in ELEMENT

SECTION #5. Use the DIMENSION SHEET and set the proper exposed length of the 1/2” 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 guys: See the LOCK BLOCK AND KNOT DETAIL page. Familiarize your self

with knots at the top of VERTICAL RISER, bend the thimbles open and insert them into the holes on the top plate of the

VERTICAL RISER, then bend them back to there original shape. Follow the knot diagram and tie the upper section of

rope, leave no more than 3” of excess rope and finalize by taping the short tail of rope down to the main portion of rope.

Thread the opposite end of the rope through the ELEMENT OVERHEAD SUPPORT (M2APL0212) (See the LOCK

BLOCK AND KNOT DETAIL page) and tension the rope so the element is in a level or neutral position. It is always best to

have the element in a level or neutral position or with a slight sag downward. Over tensioning can lead to a bowed ele-

ment. This finalizes the element construction.

40M3C ELEMENT FINAL

ASSEMBLY INSTRUCTIONS

GROUND OR FLAT SURFACE SCREW, 8-32 X 1-3/4”

AND LOCKNUT

(QTY 2)

ELEMENT SECTION #1

(M2AEP40MC-1)

ELEMENT SECTION #2

(M2AEP40MC-2)

INSIDE ELEMENT SECTION #1

USE 3/16 THIMBLE

AND TIE KNOTS

SEE DIAGRAM

ELEMENT SECTION #3

(M2AEP40MC-3)

COIL ASSEMBLY

ELEMENT SECTION #5

(M2AEP40MC-5)

ELEMENT TIP

(SAEL40MCDD)

LENGTH VARIES

DEPENDING

ON ELEMENT

USE LOCK BLOCK ROPE

ROUTING DETAIL

SEE DIAGRAM

SCREW, 8-32 X 1-1/2”

AND LOCKNUT

(QTY 2)

SCREW, 8-32 X 1-1/4”

AND LOCKNUT

(QTY 2)

40M3C ASSEMBLY DETAIL

BOLT, 1/4-20 X 2”

AND LOCKNUT

(QTY 2)

BOLT, 1/4-20 X 2-1/2”

LOCKNUT, 1/4-20

(QTY 2)

USE 3/16 THIMBLE

AND TIE KNOTS

AND TAPE

SEE DIAGRAM

USE 3/16 THIMBLE

AND TIE KNOTS

AND TAPE

SEE DIAGRAM

VERTICAL RISER

ASSEMBLY

(M2AVR0010)

VERTICAL RISER

ASSEMBLY

(M2AVR0010)

1 1/2 U-BOLT & CRADLE

5/16-18 NUT & LOCKWASHER

(QTY 2)

BALUN ASSEMBLY 1:1

(FGBL500)

CLAMP BLOCK, 3/8

(M2AMC0261)

HAIRPIN TUBE

(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 PLATE

(M2AEC0040)

(QTY 2)

CRADLE 3”

(M2AMC0136)

(QTY 2)

CRADLE 3”

(M2AMC0136)

(QTY 2)

BOLT, 1/4-20 X 2-1/2”

LOCKNUT, 1/4-20

(QTY 4)

BOLT, 1/4-20 X 2-1/2”

LOCKNUT, 1/4-20

(QTY 4)

BOLT, 1/4-20 X 3-1/2”

AND LOCKNUT

(QTY 2)

BOLT, 1/4-20 X 3-1/2”

AND LOCKNUT

(QTY 2)

BOLT, 1/4-20 X 2-3/4”

AND LOCKNUT

(QTY 2)

BOLT, 1/4-20 X 2-3/4”

AND LOCKNUT

(QTY 2)

ELEMENTASSEMBLY

REFLECTOR OR DIRECTOR

ELEMENT

ELEMENTASSEMBLY

DRIVEN ELEMENT

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