M2 Antenna Systems 2MCP22 User manual

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 .........................................2MCP22

Frequency Range.......................144 To 148 MHz

*Gain ..........................................14.39 dBic

Front to back ..............................25 dB Typical

Elipticity......................................>3db

Beamwidth ...............................38°

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

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

Maximum VSWR........................1.4:1

Input Connector..........................“N” Female others opt.

Power Handling..........................1.5 kW, 750W with PS-1

Boom Length / Dia......................18’ 7” / 1-1/2” To 1”

Maximum Element Length..........40”

Turning Radius:..........................10’

Stacking Distance.......................10’ High & 10’ Wide

Mast Size....................................1-1/2” to 2” Nom.

Wind area / Survival...................2.5 Sq. Ft. / 100 MPH

Weight / Ship Wt.........................9.5 Lbs. / 11 Lbs.

M2 Antenna Systems, Inc.

Model No: 2MCP22

FEATURES:

This cross polarized Yagi was computer designed for the serious OSCAR user. The average side and back lobes power have been

reduced by approximately 10 dB over any previous design, enhancing signal to noise ratio and putting all your power where it will do

the most good. The 2MCP22 is ideal for general use over the ENTIRE two meter band from FM to SSB and CW DX. Arrays of two or

more will even permit moonbounce contacts using the old reliable passive repeater in the sky.

The unique Driven Element Modules are CNC machined and feature O-ring sealed connectors. Internal connections are encapsulated

in a space age silicone gel with nearly 4 times the dielectric strength of air. The 2MCP22 is our finest circular polarized antenna. We

are confident you will be impressed with the 2MCP22 from the moment you open the box until you've worked DXCC and beyond!

Optional items include HDFG fiberglass crossboom kit compatible with Yaesu 5400 and 5600 series az-el rotators, power dividers

2M2PORT and 2M4PORT, polarity switch, phasing lines VHF-50-2MCP22(2) or (4), ‘H’ frames, OR-2800 azimuth and MT-1000 and

MT-3000 elevation rotators / positioners.

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

TOOL REQUIRED FOR ASSEMBLY: screwdriver, 11/32 nut driver or wrench, 7/16” and1/2” end

wrenches, pliers, measuring tape.

1. Start by laying out the boom sections, noting hole positions and matching to the DIMENSION

SHEET. Use 8-32 X 1-1/2” screws and locknuts to join 1” to 1-1/4” sections; 1-3/4” screws for 1-1/4” to

1-1/2” sections.

2. Separate elements by length into two identical sets, “H” and “V.” Position the “H” element set along

the boom by “H” length and position as shown the DIMENSION sheet. Start with the reflector (longest)

element. Balance it on your finger to find rough center and push on a black button insulator to about

1/2” off center. Push the element through the holes 1/2" from the rear of the boom and install the

second button, snugging it up into boom. DO NOT BOTHER CENTERING the element at this time and

DO NOT INSTALL the stainless steel shaft retainers yet. It is easier to do after all the horizontal

elements are installed in the boom.

3. Install the 3/16” rod DRIVEN ELEMENT as you did the reflector. Then continue with the installation

of the DIRECTORS. Note that the Director Elements do not consistently diminish in length from rear to

front, so pay close attention to length and position.

4. Now begin centering the elements. Use a tape measure to EQUALIZE the amount the element

sticking out on each side of the boom. Once you have all the elements centered, sight down the

element tips from the rear comparing each side. Look for any obvious discrepancies and correct if

found.

5. Begin installing the stainless retainers. Use thumb and index finger to hold a retainer over end of the

3/8 x 3” push tube (retainer dished into tube). Hold the element firmly and start the retainer onto the

rod by applying pressure with the push tube. Push the retainer until up tight against the button insulator

(Locking pliers, lightly clamped up against opposite button insulator will help maintain center reference

and keep you from pushing the first retainer too far). Repeat for the opposite side. Continue installing

retainers until all elements are locked in place.

6. Mount the HORIZONTAL DRIVEN ELEMENT BLOCK / ROD ASSEMBLY to the TOP of the boom

using a single 8-32 X 1-1/4" screw. Orient the block with the two balun connectors facing to rear. Install

the 8-32 x 1/4” set screws (internal Allen head - tool supplied) into the SHORTING BARS. Slide the

bars onto the Driven Element Block Rods and the driven element rods. Position the Shorting Bars at

the ends of the 3/16” rod that passes through the boom. Align the bars with each other and tighten the

set screws.

7. Mount the "T" JUNCTION BLOCK on the top of the boom to holes about 9” to the rear of the vertical

driven element block. Orient "N" feed connector to the rear. Secure with 8-32 x 1-1/4 screw.

8. ASSEMBLING THE VERTICAL ELEMENTS

Repeat steps #2 through #5 for the Vertical elements, using the Dimension Sheet as your guide to

lengths and spacing.

2MCP22 ASSEMBLY MANUAL

9. INSTALLATION OF THE VERTICAL DRIVEN ELEMENT BLOCK DETERMINES THE

CIRCULARITY OF THIS ANTENNA. THE ORIENTATION OF THE BLOCK FOR RHC - RIGHT

HAND CIRCULARITY, IS SHOWN ON THE DIMENSION SHEET AND DRAWING.

Viewed from the rear of the boom (rearmost Reflector HORIZONTAL), the VERTICAL Driven Element

Block mounts to the LEFT hand side of the boom with the two Balun connectors oriented to the REAR.

Secure with 8-32 x 1-1/4” screw. Install the Shorting Bars as in step #7.

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

connectors, with the black Neoprene face of the nuts facing out. Attach Baluns and Phasing lines to

the Driven Element Blocks and Junction Block as shown on the Dwg. 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, the Vertical balun may loop around another element.

This is normal. Form balun and phasing line coax close to the boom and secure with nylon cable ties.

Ties should be snug but not crushing or kinking the coax.

11. Use good quality coax and “N” connector for your feedline. Secure feed coax near connector on

Junction Block, to provide stress relief, route to rear of boom and secure again. Allow coax to hang in

a loop between the rear end of the boom and the reattachment point (at least 12” beyond element tips)

on the mast or crossboom. Do not route feedline to boom- to- mast plate as exiting antenna here

will adversely affect circular field.

12.The boom to mast plate is normally mounted to the boom at, or near, the physical balance point,

and only to the 1-1/2" boom section. Use two 1-1/2" U-bolts and the stainless nuts and lock washers

provided. DO NOT OVER TIGHTEN. 2” U-bolts and stainless hardware are provided for mounting the

antenna to your NON-CONDUCTIVE 2” mast or crossboom. Since the feed line represents significant

weight it is best to have it attached and fastened to the boom with cable ties before final mounting of

the plate. Element alignment is your choice. Elements oriented at 45 degrees works well for bringing

the feedline off with minimal interference to the pattern or VSWR.

13. IF YOU WILL BE USING THE ANTENNA FOR TERRESTRIAL USE ONLY, you may want to

consider installing the overhead Dacron cord boom support system (supplied). FOR SATELLITE USE

most users don't find it necessary and prefer to "keep the antenna simple". A slight droop in the boom

may be noted but it will not effect the antenna performance.

2MCP22 ASSEMBLY MANUAL

14. To add the support, install a 2" U-bolt into the 1-1/2” x 4” TURNBUCKLE PLATE and attach the

turnbuckles. Temporarily install the turnbuckle U-bolt studs into the top set of U-bolt holes in the boom

to mast plate and loosely secure with a couple of 5/16” nuts. This "locks" the alignment of the

turnbuckle plate to the boom to mast position. Install the two U-clips into the boom and secure with

retainers. Rotate boom so clips are vertical.

15. Now attach one end of the BLACK DACRON SUPPORT CORD to the front U-clip. Two turns of

cord and a square knot is adequate. Heat-seal the left over end and tape back to the main line. Route

the cord back to the rear clip and knot the same. Even-up excess cord at the turnbuckle plate and cut.

The turnbuckles should be extended until just a thread or two shows inside the body of the turnbuckle.

Attach cord ends to the turnbuckles as on the U- clips. When completed, the two lines should be tight,

the turnbuckles laying flat out just over the boom. After the antenna is installed to a mast, the

turnbuckle plate is attached and slid up about one foot until the boom is straight. Use the turnbuckles

to balance and fine tune the support. After final adjustments, safety-wire the turnbuckles to maintain

settings.

16. The 2M22CP is a circular polarized antenna and creates a field in all planes or polarities.

PERFORMANCE DETERIORATES SIGNIFICANTLY if it is mounted on a metal (conductive) mast /

crossboom or if the feedline exits the boom anywhere but at the rear. A 2” mast or crossboom of any

NON-CONDUCTIVE material can be used. Fiberglass is the prime choice for its strength and weather

resistance (1/4” wall x 2” O.D. Fiberglass tube is available from M2). Mount the 2M14CP so that

element tips are at least 12” from any conductive material (mast, tower, feedline, etc.).

THIS COMPLETES THE ANTENNA ASSEMBLY.

CAREFULLY MANUFACTURED BY:

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 Fax: 432-3059

www.m2inc.com Email: [email protected]

2MCP22 ASSEMBLY MANUAL

2MCP22 DIMENSION SHEET

2MCP22 ASSEMBLY DETAILS

DESCRIPTION QTY

#1 BOOM SECTION, 1 X .058 X 41.5” ....................1

#2 BOOM SECTION, 1-1/4 X .058 X 60” SOE........1

#3 BOOM SECTION, 1-1/2 X .058 X 60” SBE .......1

#4 BOOM SECTION, 1-1/4 X .058 X 60” SOE........1

#5 BOOM SECTION, 1 X .058 X 13”........................1

ELEMENTS, 3/16 ROD x Dimension Sheet.............22

DRIVEN ELEMENT BLOCK ASSEMBLY.................2

JUNCTION BLOCK ..................................................1

BALUN, RG-6 1/2 WAVE..........................................2

MATCHING / PHASING CABLE, 1/4 WAVE............2

BOOM-TO-MAST PLATE, .188 X 6 X 4”..................1

TURNBUCKLE PLATE, 2 X 4...................................1

U-BOLT AND CRADLE, 2’........................................3

U-BOLT AND CRADLE, 1-1/2”.................................2

DACRON ROPE, 3/32 X 16’ 8”.................................1

ASSEMBLY MANUAL ..............................................1

IN HARDWARE BAG:

TURNBUCKLES, 1/4” X 5-1/4”.................................2

U-CLIPS, 3/16” ROD ................................................2

SHORTING BAR ......................................................4

BUTTON INSULATORS...........................................44

KEEPER, SS ............................................................48

NUT, 5/16-18 SS ......................................................10

LOCKWASHER, 5/16 SS .........................................10

SCREW, 8-32 X 1-3/4 SS.........................................4

SCREW, 8-32 X 1-1/2 SS.........................................4

SCREW, 8-32 X 1-1/4 SS.........................................3

LOCKNUT, 8-32 SS..................................................8

SET SCREW, 8-32 X 1/4 SS....................................8

CABLE TIE, NYLON ................................................5

SEAL NUTS..............................................................8

ALLEN HEAD WRENCH..........................................1

PUSH TUBE, 3/8 X 3”...............................................1

CAREFULLY MANUFACTURED BY:

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 Fax: 432-3059

www.m2inc.com Email: [email protected]

2MCP22 PARTS & HARDWARE

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