M2 Antenna Systems 40M3L Bedienungsanleitung

8/17/11

Rev.00

Model ........................................40M3L

Frequency Range.......................7.0-7.3 MHz X 150 kHz

Gain............................................6.6 dBi

Front to back..............................23 dB

Beamwidth ...............................E=62°

Feed type...................................Hair pin match

Feed Impedance........................50 Ohms Unbalanced

Maximum VSWR........................1.3:1 typ. 2:1 max

Input Connector..........................SO-239, Other avl.

Power Handling..........................3 kW, Higher avl.

Boom Length / Dia......................29.5’ / 3.0 x .125 Wall

Element Length / Dia..................51 Ft

Turning Radius:..........................29 Ft

Stacking Distance....................... Call

Mast Size....................................2” to 3 ” Nom.

Wind area / Survival...................9.5 Sq. Ft. / 100 MPH

Weight / Ship Wt.........................99 Lbs. / 125 Lbs.

M2 Antenna Systems, Inc.

Model No: 40M3L

FEATURES:

The 40M3L is a linear loaded 40 meter Yagi designed with 20 years of experience and listening to

customer’s needs. The result is a powerful package of clean mechanical design, quality materials, and

outstanding performance that will deliver years of enjoyment on the 40 meter band.

Mechanically the elements are mounted between 1/2” thick, machined aluminum clamp plates! The

Driven element is split and insulated with a 1-1/4 inch solid fiberglass rod and fed with a weather sealed 1:1

balun. All elements use linear loading of 3/16" 6061-T6 aluminum rod to reduce overall length, wind load, and

turning radius. The linear loaded sections anchor 10" above the element to reduce inductive cancellation

(requiring LESS loading), reduce mechanical stress, and minimize element droop (in the air the antenna is

easily mistaken for a 15 or 20 meter Yagi!). Compare performance, construction and durability.... This is not

just another 40 meter Yagi!!

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

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

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

BEFORE YOU BEGIN: Look over the DIMENSION SHEET, HARDWARE AND ELEMENT ASSEMBLY

DRAWINGS to get familiar with the various parts of the antenna. Tools handy for assembly process:

screwdriver, 11/32, 7/16, 1/2, 9/16 and 5/8” nut drivers, end wrenches and/or sockets, diagonal cutters,

and measuring tape. Small containers of zinc paste (Penetrox, Noalox, or equiv.) has been

provided to enhance and maintain the quality of all electrical junctions on this antenna. Apply a

thin coat wherever two pieces of aluminum come in contact or any other electrical connections

are made.

1. ELEMENT CLAMP BLOCK ASSEMBLY.

SEE “ELEMENT HARDWARE” drawing to aid in the assembly of this step. Start by assembling pairs

of ELEMENT CLAMP PLATES, #6 together with 1/4-20 x 2-1/2" bolts in the four outer holes. NOTE

THAT ONE SET OF CLAMP PLATES WILL ALSO GET A 1” X 1” X 6” ANGLE BRACKET FOR

MOUNTING THE BALUN. Add the 1/4-20 locknuts finger tight.

A. DRIVEN ELEMENT

On one of the element clamp plates assembled in the previous step, slip in the 1-1/4 X 24" fiberglass

rod and rotate until the element mounting holes are vertical. Center the rod and tighten the

hardware EVENLY, so the plates are parallel and the same amount of threads are showing

through all the locknuts. Slide the POLYETHYLENE DISC INSULATORS onto both ends of the

fiberglass rods and push them up against the clamp plates. The disc insulators can sometimes be a

very tight fit on the rods. If you can’t get them to fit place them in hot water a few minutes.

B. REFLECTOR, DIRECTOR ELEMENT

Slide a 1-1/4” x 24” aluminum CENTER COUPLING ROD into a CLAMP PLATE ASSEMBLY. Center

the assembly and align the bolt holes to vertical. Tighten all four outer element clamp plate bolts

EVENLY. Make sure plates remain parallel, top to bottom.

2. VERTICAL SUPPORT POST INSTALLATION. Use the ELEMENT HARDWARE drawing.

The element clamps require a 3/4” square x .125” wall x 11” WELDED VERTICAL SUPPORT POST to

raise and support the linear loading lines. Orient the WELDED PLATE over the element clamp plates.

Insert two 1/4-20 x 3-1/4” bolts through the holes in the SUPPORT POST . Then mount the posts to

the middle two holes of each clamp plate and secure with 1/4-20 locknuts.

Prepare the 1/4-20 x 6” turnbuckles by removing the RIGHT HAND THREAD END OF EACH

TURNBUCKLE and thread on a 1/4-20 “JAM NUT” as shown on the drawings, Thread the 1/4-20 nut

all the way up at this time. The nuts will be used to “LOCK UP” the turnbuckles once all the

adjustments are done. Install a TURNBUCKLE in each hole of the welded TOP PLATE as shown in the

drawing. NOTE: The hook is inserted from UNDER the plate through the hole. Finally, install a CABLE

EYE OR THIMBLE in the EYE of each turnbuckle.

3. HALF ELEMENT ASSEMBLIES

There are 6 half element assemblies. One pair each for the Reflector, Rear Driven, Front Driven, and

Director Elements. See the ELEMENT ASSEMBLY drawing to aid in the assembly of each half

element. Also refer to the DIMENSION SHEET and ELEMENT HARDWARE DETAIL drawings. Only

the 1/2” element tip sections are different lengths. The correct hardware to join the various sizes are as

follows:

For 1-1/2" to 1-1/4" tubing use 8-32 x 1-3/4" screws.

For 1-1/4" to 1" tubing use 8-32 x 1-1/2" screws.

For 1" to 1“ and 1” to 3/4" tubing use 8-32 x 1-1/4" screws.

For 3/4" to 1/2" tips use 5/8” compression clamps.

40M3L ASSEMBLY MANUAL

Locknuts have been provided for all the element assembly screws. Tighten the nuts until the joint

doesn't move when wiggled or shook. The element butt section closest to the boom always has one

hole located at the butt for a 1/4-20 bolt.

A. See the INSERT figure at the right of the ELEMENT ASSEMBLY drawing. Prepare the LINEAR

LOADING ARMS (1” center hole) with one 8-32 x 1/4” Allen head SET SCREW. (5/64 Allen

wrench supplied), one 8-32 x 1-1/2” screw and locknut. Slide a LINEAR LOADING ARM on each

1" section and position it next to the end screw.

B. Now slide the I” tube sections over the 7/8 x 9” fiberglass rod insulators. Connect the two sections

with 8-32 x 1-1/4" screws and locknuts. Orient the arms as shown and tighten the 8-32 x 1-1/2 screws

and locknuts. Be sure the arms are up against the screws closest to the fiberglass rod. THIS IS

IMPORTANT SINCE THE ARMS ARE USED FOR DIMENSIONING THE LINEAR LOADING

SHORTING BAR POSITION LATER IN THE ASSEMBLY

C. Locate the black plastic, 1” x 6” linear loading stabilizer bars. Attach them to the short 3/8” x 1-1/4”

x 3” support arm with the 1 inch hole. Use 8-32 x 1” screws and locknuts. Slide these on the SHORT,

one inch element sections and position about 3” in from the butt. Now attach the 1-1/4” x 60” element

sections. Add the 8-32 x 1-1/2” screws and locknuts but do not tighten until the STABALIZER BAR

AND ARM ASSEMBLY ARE IN THE FINAL POSITION. Orient the black stabalizer bar insulators

perpendicular to the element coupling holes and the support arms. Secure with 8-32 x 1-1/2” screws

and locknuts. Repeat for the other element halves.

E. Insert the 3/4 x 48” sections into the swaged 1” sections and secure with 8-32 x 1-1/4 screws and

locknuts.

NOW IS THE TIME TO DETERMINE WHAT PART OF THE BAND YOU WANT TO USE MOST AND

EMPHASISE. THE 3 BAND SEGMENTS INSURE VSWR UNDER 2:1 AND OPTIMUM GAIN & F/B.

F. Following the DIMENSION SHEET, add the 1/2” tip sections in pairs, noting that each element has

different tip lengths. Secure with 5/8” compression clamps.

G. As the outer element sections are being assembled, label each assembly as “REFLECTOR”,

DIRECTOR or “DRIVEN”, ” (according to the 1/2” tips) to avoid mix ups.

4. REFLECTOR AND DIRECTOR ASSEMBLY

See ELEMENT HARDWARE drawing.

Slide a 1-3/8” x 23-13/16" sleeve onto the 1-1/4” CENTER COUPLING ROD on the ELEMENT

CLAMP ASSEMBLY, and align the 1/4” holes. Temporarily pin the sleeve as necessary. Carefully slide

a 1-1/2” x 60” element section onto this assembly and align all holes. Insert a 1/4-20 x 2“ bolt and

tighten securely with 1/4-20 locknut. Repeat for the other element half. Now add the reflector element

outer half element assembly completed in the previous step to the 1-1/2" sections using 8-32 x 1-3/4"

screws and locknuts. Repeat for the other element halves.

5. DRIVEN ELEMENT ASSEMBLY

See ELEMENT HARDWARE drawing.

Slide a 1-3/8” x 23-13/16" sleeve onto each end of the two 1-1/4” fiberglass rods of the remaining

element clamp assemblies and align the 1/4” holes. Temporarily pin the sleeve as necessary.

Carefully slide the 1-1/2” x 60” element butt onto the element mounting plate assemblies and align all

holes. Locate 3/8” clamp blocks. Apply a little zinc paste to each of the channels. Loosely assemble

the blocks together, channel to channel. Install a 1/4-20 x 2-1/2” bolt up through the 1-1/2” element

butt and drop the blocks over the stud. Add a locknut but do not tighten the hardware at this time.

40M3L ASSEMBLY MANUAL

6. Now add the driven element outer half element assembly completed in previous steps to the 1-1/2"

sections using 8-32 x 1-3/4" screws and locknuts. Repeat for the other element half.

7. LINEAR LOADING ROD INSTALLATION (FOR BOTH ELEMENT HALVES)

Place each element assembly on a level surface with the support post up. FROM THE ELEMENT

BUTT SIDE, feed a 3/16” diameter LINEAR LOADING ROD through the flat support insulator.

Then insert the rod into the LL ARM. The rod should protrude just 1/2” through each arm. Tighten the

8-32 x 1/4" set screw and repeat for the other rod. Install a SHAFT RETAINERs, on these rod tips and

snug up against the LL arms. Repeat for the other element half. Repeat this step for each element.

NOTE: to start the RETAINER, hold the 3/8 x 3" PUSH TUBE in your hand with one end between your

thumb and forefinger. Now center the retainer on this end, “dish” into tube, and hold in place with the

same thumb and forefinger. Grasp the linear loading rod near the end with your other hand and firmly

push the retainer onto the rod.

8. SHORTING BAR PREPARATION

Locate the 16 shorting bar halves. Assemble the shorting bars with 8-32 x 1” screws and locknuts.

Finger tighten the locknuts for now. Next, begin to assemble the phyllistrand tension lines as shown

on the ELEMENT HARDWARE drawing. On each shorting bar, insert one end of each length of

PHILLISTRAN HPTG-1200 CORD into the CENTER hole of the shorting bar. Loop the cord AROUND

THE STRAIN RELIEF back through the other hole and allow about 2” to pertrude. Place a cable clip

here as a “backup” to the final clamping action of the shorting bar halves. Don’t tighten the hardware at

this time.

(OPTIONAL)> On each phyllistrand tension line insert two more 1/8” cable clips and allow them to

slide all the way to the shorting bar for now.

9. SHORTING BAR INSTALLATION

Next, feed each shorting bar onto the pair of linear rod ends and position about them at the

measurement as shown on the DIMENSION SHEET. NOTE the dimension is measured from the

OUTSIDE edge of the LL arm to the OUTSIDE edge of the shorting bar. (USING A BLACK

PERMANENT MARKING PEN OR EQUIVALENT, MARK THE SPOT ON THE ROD WHERE THE

SHORTING BAR SHOULD BE) Be sure the linear loading lines are centered about the main element.

Once the shorting bars have been correctly set, align, and tighten all of the 8-32 hardware. Cut off the

excess material (if any) so that about 1” of rod extends beyond the shorting bar. Start a SHAFT

RETAINER onto each rod end (just to backup the clamping function). Push the retainers up against

the shorting bar. Repeat for all of the other element halves.

10. SUSPENSION OF PHYLLISTRAN TENSION LINES

At this point you might want to perform the remaining steps on a flat surface. Support the ends of each

element tip up so that it is at the same height as the center section. Next insert the phyllistrand

tension lines through their respective turnbuckles, around each thimble or cable eye, and then finally

back through the two cable clips. See the ELEMENT HARDWARE drawing for an illustration. Now

pull on the free end of the phyllistrand until the entire element appears to be level. (IT MAY BE

HELPFUL TO RAISE THE OUTER END OF THE ELEMENT HALF WITH A 4” BLOCK OF WOOD OR

BRICK. At this point, secure the tension line by tightening the two 1/8” cable clips. Repeat this

procedure for all the other element halves. The final tensioning of the linear loading rods is done with

the TURNBUCKLES. This can be performed after the elements have been secured to the boom.

11. BOOM ASSEMBLY

Use the BOOM HARDWARE drawing as a guide to assemble the boom. At this point it will be helpful

to perform the remaining assembly steps with the antenna elevated off the ground (about 3 feet). This

can be accomplished by using sawhorses or something similar. Wipe off the swaged ends of each

boom section and apply a small amount of Penetrox. Insert the swaged end of the boom sections into

the straight piece. Align all of the holes, install the 1/4-20 x 3-1/2" bolts and locknuts, and tighten.

Install the 5/16 x 5” eyebolts near each end of the boom.

40M3L ASSEMBLY MANUAL

A. Install the 5/16” EYEBOLTS to the outer ends of the boom, securing with stainless 5/16” nuts and

lock washers. Align the eyes parallel with the boom and tighten.

12. For ease of element installation, support the boom about 2-3 feet above ground. Loosely attach

the BOTTOM CRADLES to the bottoms of the clamp plates using the 1/4-20 x 2-3/4" bolts. (BE SURE

TO USE ZINC PASTE ON THESE THREADS). Slide the REFLECTOR clamp plate onto the boom

end. Level the reflector element and tighten all four bolts EVENLY and firmly. Repeat for the DRIVEN

ELEMENT on the other end of the boom. ADJUST EITHER ELEMENT TO THE PROPER SPACING

BETWEEN ELEMENTS. Make sure the saddles are straight and level. A cocked clamp will loosen

quickly in the first wind. Align the elements and tighten the hardware

13. Now take a step back for a moment to observe any misalignment (if any) and the “droop” in each

element. Simply look down either the front or back of the boom to do this. If you have not already

done so, adjust each turnbuckle until each element droops 6 to 10 inches at the tip. NOTE: The

elements are the most stable in wind with a small amount of tip droop. ADJUST FOR LEVEL INNER

SECTIONS AND THE CORRECT TIP DROOP WILL BE AUTOMATIC. After the adjustments have

been made, proceed with tightening the 1/4-20 JAMNUT on all the turnbuckles.

14. 1:1 HF BALUN INSTALLATION — SEE ASSEMBLY DRAWINGS AND DIMENSION SHEET

Mount the balun to the angle plate on the driven element using a 2-1/2” U-bolt and saddle. Be sure the

balun vent hole is down. Do not over tighten as balun damage may occur.

15. INSTALLING THE HAIRPIN (MATCHING ASSEMBLY)

A. Apply a little Penetrox to the balun terminal lugs. Remove the nuts holding the 3/8 clamp blocks

and place the balun lead lugs over the studs. Replace the nuts loosely. Apply a little Penetrox to

the shorter bent ends of the hairpin tubes. INSERT the tubes into the grooved channels of 3/8”

clamp block assemblies on Driven element. Push the tubes through until at least 1/4" extends

beyond clamp and then tighten the clamp bolt slightly to hold the tubes from slipping. Rotate the

tubes so the bends are level and the long sections are parallel to the boom.

B. Install the 1/4-20 x 1/4” set screws into the ends of the HAIRPIN SHORTING BAR. Insert a 1/4-20

x 2” bolt into the hole of the #52 stainless band clamp from the inside and add the 3/8” x 1”

aluminum spacer. Add the shorting bar and the lock nut loosely to hold the assembly together.

Open the clamp and set it over the boom about 60 inches from the driven element. Now slide the

assembly to the ends of the hairpin tubes and insert the end into the shorting bar. ( lubricant like

WD-40 or zinc paste will let the shorting bar slide easier on the tubes. Position the shorting bar 38

inches from the driven element. Align the assembly, and tighten the band clamp. Next tighten the

nut securing the shorting bar and finally tighten the set screws onto the tube. NOTE: IF YOU CAN

DO FINAL VSWR MEASURMENTS AND ADJUSTMENTS DURING THE FINAL INSTALLATION,

DO NOT TIGHTEN THE SET SCREWS YET. SEE THE NOTE AT THE BOTTOM OF THE

“DIMENSION SHEET”

C. Now return the to balun end of the hairpin assembly and final tighten the bolts holding the tube

ends and the balun leads.

16 Attach the BOOM TO MAST PLATE at the balance point, using the two large 3” U-bolts, 3/8-16

stainless lockwashers, and nuts. Align plate to vertical and tighten nuts.

17. OVERHEAD BOOM SUPPORT SYSTEM.

A. Attach one end of the 5/16" Dacron cord to the rear eyebolt using two turns around the eyebolt and

a series of three half hitches or equivalent knots. Finish with about 6 inches of cord after the knots.

Without cutting the cord, do the same at the front eyebolt. Pull on the knots HARD to SET them.

Seal ends with heat or flame to prevent fraying. Tape the excess 6 inches of cord back to main cord

tightly with black vinyl electricians tape.

40M3L ASSEMBLY MANUAL

B. TEMPORARILY insert a 2 inch U-bolt through the turnbuckle plate and add two nuts so about 1/2

inch of the threads stick out. Insert this assembly through the top set of 2” U-bolt holes in the boom to

mast plate from the boom side and add two more nuts. Open the two turnbuckles up so just athread

or two from each end shows inside the body of the turnbuckle. Hook the turnbuckles into the holes at

the edge of the turnbuckle plate. Equalize the Dacron cord over the plate and cut it. Take two wraps

of the cord through the eye of the rear turnbuckle, PULL the cord as tight as possible and make the

knots as before. Repeat for the front cord section and turnbuckle. Cut off any excess over one foot

long and again seal and tape back to the main cord.

C. Now DISASSEMBLE the U-bolt from the boom to mast plate. Before installation, if possible, install

a short temporary mast, attach turnbuckle, and let the overhead guy system support the boom

overnight. The Dacron cord DOES NOT STRETCH UNDER THIS LOAD but it's weave will take a SET

and the boom may droop just a bit. If your boom droops again following final adjustments, check your

knots. They may be may be slipping.

D. After final installation of the antenna, the turnbuckle plate, installed loosely with a 2” U-bolt, is raised

up the mast. When the boom is straight the U-bolt is tightened. This should place the turnbuckle plate

4 to 6 feet above the boom. Do the final boom straightening with the turnbuckles and safety wire to

preserve adjustments.

18. Check ALL hardware for tightness. Check ALL element sections, especially tip sections, for correct

placement. Make any final adjustments to linear loading tension.

19. Attach the feedline section to the balun. Route it towards the boom to mast plate. Secure at

regular intervals with tape or nylon ties.

20. When mounting this antenna on a tower or mast with other antennas there may be interaction. In

general VHF and/ or UHF antennas mounted for HORIZONTAL POLARITY should be AT LEAST 40

inches above or below the antenna. Use good quality 50 Ohm coaxial cable to feed the antenna and

be sure your tower and rotator system can handle the wind loading and vertical weight of this antenna.

THIS COMPLETES ANTENNA ASSEMBLY

M2ANTENNA SYSTEMS, INC.

4402 N. SELLAND AVE.

FRESNO, CA 93722

(559) 432-8873 FAX (559) 432-3059

www.m2inc.com Email: [email protected]

40M3L ASSEMBLY MANUAL

3/16" x 111" ROD

3/16" x 114" ROD

1-1/4" X 60"

DRIVEN ELEMENT

3/16" x 111" ROD

3/16" x 114" ROD

1-1/4" X 60"

REFLECTOR ELEMENT

3/16" x 111" ROD

3/16" x 114" ROD

OUTSIDE EDGES

1-1/4" X 60"

DIRECTOR ELEMENT

YOUR FINAL MATCH IS A BALANCE BETWEEN THE 'S' HAIRPIN DIMENSION

AND THE TIP LENGTH OF THE DRIVEN ELEMENT. IF YOU ADJUST EITHER,

DO IT IN 1" INCREMENTS AND ONLY ADJUST ONE AT A TIME BEFORE YOU

CHECK THE RESULT. 30 FEET ABOVE GROUND IS THE MINIMUM REQUIRED

MEASURMENT HEIGHT.READING MAY CHANGE RAPIDLY AND RADICALLY

BELOW 30 FEET.

BAND SEG. UNDER 2:1 7.0-7.130 7.1-7.240 7.150-7.30

REFLECTOR 58.50" 50.50" 47.50"

DRIVEN 44.50" 37.50" 34.50"

DIRECTOR 39.50" 31.50" 28.50"

'S' (HAIRPIN SHORT) 36" 36" 36"

108.5 "

ON ALL EIGHT

HALF ELEMENT

SECTIONS

1" X 1" X 6"

BALUN MTG.

ANGLE BKT.

3" x .125" x 180", PLAIN

1-1/2" X 60" SOE

EYEBOLT

355.0"

1-1/2" X 60" SOE

163"

'S'

HAIRPIN TUBES

AND SHORTING BAR

ELEMENT SPACINGS

1.5"

3" x .125" x 180" SOE

1/4-20 x 3-1/2"

BOLT AND LOCKNUT

189"

BOOM TO MAST PLATE

NEAR BALANCE POINT

1-1/2" X 60" SOE

EYEBOLT

CENTER

CENTER 0

5/8"

COMPRESSION

CLAMP

1/2" X CHART

EXPOSED

1/2" X CHART

EXPOSED

1" X 60"

1" X 24" 5/8"

COMPRESSION

CLAMP

3/4" X 48"

1" X 60"

1" X 24"

3/4" X 48"

1/2" X CHART

EXPOSED

5/8"

COMPRESSION

CLAMP

40M3LL

1/2" TIP DIMENSIONS

1" X 60"

1" X 24"

3/4" X 48"

40M3L DIMENSION SHEET

1/2 x 1 x 4" CRADLE (2)

1/4" TURNBUCKLE (2)

PARASITIC ELEMENT

HARDWARE

1-1/4" X 24"

ALUM. ROD

1-3/8 X 23-13/16" SLEEVE

1-1/2 X 60" SOE

3/16" LINEAR

LOADING ROD (2)

1/4-20 X 2-3/4"

BOLT (4)

8-32 x 1"

SCREW &

LOCKNUT (5)

CABLE EYE

WIRE NUTS (2)

(CABLE CLIPS)

BOLT AND LOCKNUT

1/4-20 X 2-1/2"

BOOM, 3"O.D.

X .125 WALL

ELEMENT CLAMP BLOCK

1/2" X 3" X 6" (SIZE #6)

1/4-20 X 3-1/4"

BOLT & LOCKNUT

3/4" X 3/4" X .125" WALL

VERTICAL SUPPORT

1/4-20 SS

JAM NUTS

POST

1/4-20 X 2"

BOLT & LOCKNUT

DRIVEN ELEMENT HARDWARE

8-32 X 1"

SCREW &

LOCKNUT

5 PER SIDE

1-1/4" X 24"

FIBERGLASS ROD

1-3/8 X 23-13/16"

SLEEVE

1-1/2 X 60" SOE

1/4-20 X 2-3/4" BOLT

& LOCKWASHER

STRAIN RELIEF

HPTG 1200

PLILLISTRAN

(1) CABLE EYE

(3) CABLE CLIPS

8-32 X 1"

SCREW &

LOCKNUT

5 PER SIDE

ELEMENT CLAMP BLOCK

1/2" X 3" X 6" (SIZE #6)

1/4-20 X 2-1/2"

BOLT AND LOCKNUT

1/4-20 X 3-1/4"

BOLT & LOCKNUT

1/2" X 1" X 4"

INSULATOR

POLY DISC

BOOM, 3"O.D.

X .125 WALL

CRADLE

1/4-20 X 2-1/2"

BOLT & LOCKNUT

SHORTING BAR PAIRS

1/4" TURNBUCKLE

AND JAM NUT

3/4" X 11" SQ. RISER

& WELDED TOP PLATE

3/16" LINEAR

LOADING ROD

3/8" CLAMP

BLOCK

40M3L ASSEMBLY DETAIL

KEEPERS, OR

SHAFT RETAINERS

1 ON EACH END

BOOM HARDWARE ARRANGEMENT

SHORTING BAR HALVES

(2) PER ELEMENT HALF

3" X .125 X 180" SOE

LINEAR LOADING SUPPORT POST

WITH WELDED TOP PLATE

5/16 X 5"

EYEBOLT (2)

1/4" CABLE EYE (4)

2 PLCS. PER ELEMENT

BOLTS & LOCKNUTS

1/4-20 X 3-1/4"

TOP VIEW - LINEAR LOADING/ELEMENT CLAMP HDWE

1-3/8" x 23-13/16"

3/16 X 95' &

3/16" X 20" RODS

BOLTS & LOCKNUTS

4 PLCS PER ELEMENT

1/4-20 X 2-1/2"

1-1/2"x 60"

1/8" CABLE CLIPS (6)

1/8" CABLE EYE (2)

1-1/4" x 60

1/4 X 3/4 X 1"

COUPLING

2 PER SIDE

ALUMINUM=DRIVEN EL.

FIBERGLASS=REF& DIR

1-1/4" x 24" ROD:

1:1 BALUN

8-32 X 1-3/4"

SCREW &

LOCKNUT

1/4-20 X 2" BOLT

AND LOCKNUT (8)

2-1/2" U-BOLT & SADDLE (1)

5/16-18" NUTS (2)

5/16 LOCKWASHERS (2)

BALUN MOUNTING

'L' PLATE, 6" (1)

ATTACH BALUN LEADS TO

3/8" CLAMP BLOCKS

HAIRPIN TUBE

3/8" ALUM. TUBE (2)

1:1 BALUN AREA TOP VIEW

HAIRPIN SHORTING BAR DETAIL

(END VIEW)

3/8" X 1" SPACER

1/4-20 X 2" BOLT

& LOCKNUT

BAND CLAMP #52

1/-20 X 1/4" SET SCREW

LINEAR LOADING HARDWARE DETAIL

3" X .125 X 180" PLAIN

5/16" DACRON CORD,

X 30 FEET. CUT AS RQD.

5/16" TURNBUCKLES (2)

8 X 8 X 1/4 BOOM TO MAST PLATE

USE 1/4-20 X 3-1/2"

BOLTS & LOCKNUTS

8-32 X 1" SCREWS &

LOCKNUTS (5)

40M3LASY

M. STAAL

5-3-00

REV 12/03/07

8-32 X 1-1/2"

SCREW AND LOCKNUT

8-32 X 1-1/4"

SCREW &

LOCKNUT

7/8"x 9" FIBRGLASS ROD

1 X 6"

BLACK ABS

STABILIZER BAR

(BUTT AGAINST

1-1/4" TUBE)

8-32 X 1/4"

SET SCREW

1"x 60"

LINEAR LOADING

ARM (2)3/16" SHAFT

RETAINERS

8-32 X 1/4"

SET SCREW

7/8" X 9"

FIBERGLASS

ROD

8-32 X 1"

SCREW AND LOCKNUT

3/4"x48"

SUPPORT ARM FOR

STABILIZER BAR

1/2 X CHART

5/8"

COMPRESSION

CLAMP

ELEMENT ASSEMBLY

1/4-20 PLAIN

SS JAM NUT

8-32 X 1-1/2"

SCREW &

LOCKNUT

1"x24"

1/4-20 X 2-3/4"

BOLTS

8-32 X 1-1/4"

SCREW &

LOCKNUT

40M3L ASSEMBLY DETAIL

GENERIC COMPRESSION CLAMP DETAIL

NOTE:

Generic layout to show

how compression clamps work.

Your antenna may have one or the other

or may even have both compression

clamp sizes.

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