M2 Antenna Systems 140CP14M 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.01

Model .........................................140CP14M

Frequency Range.......................135 To 144.5 MHz

*Gain ..........................................12.53 dBi

Front to back ..............................19 dB Typical

Feed type ...................................Folded Dipole

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

Maximum VSWR........................1.5:1

Input Connector..........................“N” Female

Power Handling..........................1.5 kW

Boom Length / Dia......................134” / 2”

Maximum Element Length..........43”

Turning Radius:..........................71”

Stacking Distance.......................92” HIGH—96” WIDE

Mast Size....................................2” Nom.

Wind area / Survival...................1.0 Sq. Ft. / 100MPH

Weight / Ship Wt.........................6 Lbs. / 10 Lbs.

M2 Antenna Systems, Inc.

Model No: 140CP14M

FEATURES:

The 140CP14M is high performance circular polarized antenna with a remarkably clean pattern. The pattern is important

in order to match the antenna’s noise temperature with modern low noise preamps. This antenna is ideal for satellite work

but is also excellent for terrestrial uses like long haul tropo communications.

The CNC machined driven element module is O-ring sealed and weather tight for low maintenance and long-term

peak performance. Internal connected are encapsulated in a space-age silicone gel that seals out moisture and improves

power handling. The 3/8” 6061-T6 rod elements are centered on the boom to minimize interaction and maintain good el-

lipticity. Insulators are UV stabilized and locked in place with stainless keepers. Rugged construction, uncompromising

performance for the boom length: that’s the M2140CP14M!

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

TOOLS REQUIRED FOR ASSEMBLY: flat and Phillips screwdriver, 7/16 and 1/2" end wrench , small

pliers, measuring tape.

NOTE: THIS CIRCULAR POLARIZED ANTENNA IS MADE UP OF TWO IDENTICAL SEVEN

(7) ELEMENT YAGI ANTENNAS THAT MOUNT IN OPPOSITE PLANES ON THE BOOM. ONE YAGI

IS SHIFTED A QUARTER WAVELENGTH (90 DEGREES) AHEAD OF THE OTHER ON THE BOOM

AND THEN THE TWO ARE PHASED AND MATCHED TOGETHER TO PRODUCE EITHER RIGHT

OR LEFT HAND CIRCULAR POLARITY. THESE INSTRUCTIONS WILL DESCRIBE ASSEMBLY

FOR RIGHT HAND CIRCULAR POLARITY.

1. Use a screwdriver to slightly spread the fingers on two 2” RING CLAMPS and slide them

onto rear of boom. Position about 64” from rear. Install a 1/4-20 x 1” bolt and locknut into

each clamp, but do not tighten at this time.

NOTE: IF MOUNTING ANTENNA TO H-FRAME, SLIDE

T-BRACE CLAMP ON THE BOOM BEFORE

INSTALLING ELEMENTS INTO BOOM.

2. MOUNTING THE REAR (HORIZONTAL) SET

OF ELEMENTS: Refer to the DIMENSIONAL DRAWING

for the length and locations of elements. Start with the

longest element, the REFLECTOR. Balance the 3/8”

Element over your forefinger to find the approximate

center. Slide on a black INSULATOR BUTTON to just

about 1" off center. Insert the element through the hole 1”

from the REAR of the boom and feed the small end of the

insulator into the hole until it bottoms on the insulator

shoulder. Add the second button insulator. DON'T

BOTHER WITH ACCURATE CENTERING YET.

3. Install the 3/8” HORIZONTAL DRIVEN ELEMENT as in step #2, above.

140CP14M ASSEMBLY MANUAL

4. Find the DRIVEN ELEMENT CONNECTOR BLOCK with the short 1/4” rod match elements.

Position it over the 1/4” hole slightly forward of the driven element. Orient so the 2 connectors in the

block are facing to the FRONT. Secure with a 1/4-20 x 2-1/4" bolt and lockwasher and tighten in

place. 5. Now install 5 horizontal DIRECTOR elements to boom.

6. Using a tape measure, carefully center each of the 7 installed elements by matching the

exposed element length on each side of the boom. After all horizontal elements are physically

centered, double check quickly for symmetry by sighting along the element tips from the rear of the

boom on each side and look for any differences. Correct if found.

7. NOTE: The SHAFT RETAINERS should always be used for permanent and long term

antenna installations. However, for portable or temporary use, or whenever it is anticipated that the

antenna will be disassembled within a short time, the retainers may be left off. The button insulators,

normally a tight fit, hold the elements quite securely.

To install the stainless steel element SHAFT RETAINERS, start by using thumb and forefinger

to hold the retainer against the end of the PUSH TUBE (3" gray PVC tube, supplied in the kit), internal

fingers on retainer dished into tube. HOLD THE ELEMENT FIRMLY TO PREVENT IT FROM SLIDING

OFF CENTER and press the retainer onto the element end and continue until retainer butts on

insulator button (Locking pliers, lightly clamped on the element up against opposite button insulator,

will help maintain center reference. If you push the first retainer too far, remove element from boom

and push retainer completely off the element, then try again). Now repeat for the other side of the

element. Continue installing retainers until all seven elements are locked in place.

8. Install two 8-32 x 1/4” set screws (internal Allen head - tool supplied) into each of the

SHORTING BARS. Slide the bars onto the 3/8” rod driven element tips and 1/4” Driven Element Block

Rods. Position the Shorting Bars as specified on the Dimension Sheet: measurement is from the outer

face of the driven element block to the inner face of the shorting bar. Align the bars and rods with each

other and tighten the setscrews.

THIS COMPLETES THE ASSEMBLY OF THE HORIZONTAL YAGI MODULE EXCEPT FOR

ADDING THE COAX BALUN AND THE MATCHING / PHASING HARNESS.

9. Now install the (VERTICAL) yagi element set. The longest element (REFLECTOR) mounts

forward of, and perpendicular to the first horizontal director already in position. Install as IN STEP #2.

10. Install the vertical 3/8” driven element.

11. CONSTRUCTION FOR RIGHT HAND CIRCULAR POLARITY: The installed position of

the VERTICAL DRIVEN ELEMENT BLOCK on the boom is critical to proper circularity. Using the

HORIZONTAL elements and the ASSEMBLY DRAWING as a reference, orient the boom so the

rearmost reflector is horizontal and the horizontal driven element block is on top of the boom.

LOOKING AT THE ANTENNA FROM THE REAR, MOUNT THE VERTICAL DRIVEN ELEMENT

BLOCK ON THE LEFT HAND SIDE OF THE BOOM, ORIENTING THE TWO CONNECTORS TO

THE FRONT. See the Hardware dwg. Secure with 1/4-20 x 2-1/4” bolt and lockwasher. Install the

Shorting Bars as in step #8.

For Left hand Circularity, mount the block to the LEFT-hand side of the boom with the two

connectors to the front.

12. Now continue installing the DIRECTORS as before. Center the elements and add the

retainers. THIS COMPLETES THE SECOND YAGI (VERTICAL).

140CP14M ASSEMBLY MANUAL

13. Install the “T” BLOCK to the 1/4” boom hole between the two driven elements. Position on

the OPPOSITE side of boom as the forward driven element, “N” connector facing to rear. Secure with

a 1/4-20 x 2-1/4” bolt and lockwasher.

14. Before installing the Baluns and Matching / Phasing Harness, thread 3/8” SEAL NUTS fully

onto all small connectors, with the black Neoprene side of the nuts facing out.

15. Attach Baluns and Phasing lines to the Driven Element Blocks and Junction Block as

shown on the Hardware Dwg. There is no polarity requirement for connections to "T" block and

phasing lines are of equal length - select best routing. Tighten the connectors gently using a 7/16" end

wrench. Once the connectors are tight, back the Seal Nuts out and finger-tighten firmly up against the

face of the connectors (or tighten gently with 1/2” end wrench). A lot of torque is unnecessary.

Depending on model and polarity, baluns may loop around or straddle an element in the opposite

polarity. This is normal. A balun that extends

beyond the boom end may be looped to shorten.

Form baluns and phasing lines close to the boom

and secure with nylon cable ties. Ties should be

snug but not crushing or kinking the coax.

16. For finding balance point of antenna,

attach the feedline, even temporarily, to the "N"

connector on the "T" Junction Block. Secure coax to

boom near connector to relieve stress. Route feed

coax to rear and secure to boom again between the

reflector and driven element. Allow about 60 inches

of cable to hang in a loop from the REAR of the

antenna before routing back to a mast or cross-

boom attach-point. Feedline should clear all

element tips and sides by al least 12”. This will

maintain top antenna performance and good

standing wave ratio.

17. Locate the BALANCE POINT of the

antenna and slide the 2” ring clamps, installed earlier, to that point. Install the BOOM TO MAST

PLATE to the clamps, long side to boom, using 1/4-20 x 1-1/4” bolts and locknuts. Two additional 2”

clamps and 1/4-20 hardware are supplied for installation to a 2” mast. Bolt to boom-to-mast plate on

opposite side from boom clamps. Loosely install 1/4-20 x 1” bolt and locknut in each set of clamp

fingers.

18. INSTALLATION TIPS: This antenna, when assembled as described above, creates a field

in all planes or polarities around the antenna. For this reason do not mount the antenna on a metal

mast or cross-boom. The performance will be severely reduced. A suitable 2” mast of any non

conductive material can be used. FIBERGLASS is the first choice because of its strength and

resistance to the weather and UV. Choose a nonconductive section long enough to keep the closest

element tip at least 12" from any metal mast, tower or feedline.

NOTE: CLAMPING TO THE 3” DIAMETER MAST IS DONE WITH PAIRS OF 3” MACHINED

SADDLE CLAMPS FACING EACH OTHER AROUND THE MAST AND SECURED WITH 1/4”-20 x 4”

BOLTS PASSING THROUGH BOTH SADDLE CLAMPS AND THE BOOM TO MAST PLATE.

THIS COMPLETES THE ANTENNA ASSEMBLY.

140CP14M ASSEMBLY MANAUL

140CP14M DIMENSION SHEET

DESCRIPTION.............................................................QTY

Boom, 2” x 133.625 x .125”, alum, .............................1

Element Rod, 3/8 alum. X See Chart ...........................14

Driven element block assembly....................................2

Junction block assembly (SADE0070) .........................1

Balun cable, RG-6U .....................................................2

Matching / phasing cable, RG-6U, 18.5" .....................2

Boom to mast plate, 4” X 6” X .250” (M2APT0030)......1

Rings clamp, 2” (M2AEC0190).....................................4

Shorting block, 1/4 x 3/4 x 2-3/16" (M2ASB0310)........4

Button insulators, black polyethelene, 3/8”...................30

Shaft Retainer, 3/8”, SS ...............................................30

Nut seal, 3/8-32 with neoprene face.............................8

Cable ties, 8" black nylon.............................................6

Assembly instructions...................................................1

IN HARDWARE BAG

1/4-20 x 2-1/4” bolt, SS ................................................3

1/4 Lockwasher SS ......................................................3

1/4-20 x 1” bolt SS........................................................12

1/4-20 locknut SS.........................................................12

Set screws 8-32 x 1/4" SS............................................8

Allen Wrench, 5/64” .....................................................1

Push tube, 5/8 for 3/8” Element Rods ..........................1

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 Fax: 432-3059

www.m2inc.com Email: [email protected]

140CP14M PARTS & HARDWARE

DESCRIPTION.............................................................QTY

Driven element block assembly....................................2

Junction block assembly (SADE0070) .........................1

Shorting block, 1/4 x 3/4 x 2-3/16" (M2ASB0310)........4

Balun cable, RG-6U .....................................................2

Matching / phasing cable, RG-6U, 18.5" .....................2

Nut seal, 3/8-32 with neoprene face.............................8

Cable ties, 8" black nylon.............................................6

Penetrox / Zinc Paste...................................................1

Assembly instructions...................................................1

IN HARDWARE BAG

1/4-20 x 2-1/4” bolt, SS ................................................3

1/4 Lockwasher SS ......................................................3

Set screws 8-32 x 1/4" SS............................................8

Allen Wrench, 5/64” .....................................................1

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 Fax: 432-3059

www.m2inc.com Email: [email protected]

140CP14M REFRESHER KIT

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