M2 Antenna Systems 400CP30A Manuel utilisateur

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

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

Rev.03

Model .........................................400CP30A

Frequency Range.......................395-405 MHz

*Gain ..........................................16.20 dBIc

Front to back ..............................22 dB Typical

Ellipticity .....................................1.5 dB Typical

Beamwidth ...............................30o circular

Feed Impedance. .......................50  , Unbalanced

Maximum VSWR........................1.6:1 Max

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

Power Handling ..........................600W

Boom Length / Dia......................140-3/4” / 1" Dia

Parasitic Elements......................28, 3/16" Rod

Stacking Distance.......................55”

Mast Size....................................1-1/2- 2 Inch

Wind area / Survival ...................1 sq ft.

Weight / Ship Wt.........................5 lbs / 7 lbs UPS

M2 Antenna Systems, Inc.

Model No: 400CP30A

FEATURES:

The 400CP30A is a practical sized, yet high performance circular polarized antenna with a remarkably clean pat-

tern. 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 ATV, repeater operation, and long haul tropo

DX. 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 3/16” 6061-T6 rod elements are centered to minimize interaction and maintain good ellipticity. Insu-

lators are UV stabilized and locked in place with stainless keepers. Rugged construction, uncompromising performance

for the boom length: that's the M2 400CP30A!

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

TYPICAL TOOLS REQUIRED: measuring tape, phillips screwdriver, 5/16”, 11/32, 7/16, and 1/2

spin-tite, end wrenches and / or sockets. Heavy duty models may require larger sizes.

1. Lay out the boom sections and assemble using the

DIMENSION sheet as a guide for position and hardware.

2. Cut a strip of masking tape about 6” long. Fold the

ends under and stick the tape to a flat surface, stickey

side up. Lay out the elements by length and position as

shown the DIMENSION sheet. NOTE: THE ELEMENTS

IN THIS ANTENNA DO NOT ALL TAPER IN LENGTH.

Now lift off the REFLECTOR and find the rough center by

balancing it across finger. Push on a black button

insulator to about 1/2” from center. Insert the element

through the holes at the rear of the boom and install the

second button. IF THE ELEMENT IS LOOSE IN THE

BUTTONS, SQUEEZE THE SMALL END OF EACH

BUTTON SLIGHTLY WITH PLIERS UNTIL IT OFFERS

SIGNIFICANT RESISTANCE WHEN THE ELEMENT IS

INSERTED. THIS WILL HELP TO HOLD THE ELEMENT

IN POSITION DURING SUBSEQUENT OPERATIONS.

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 may not

consistently diminish in length from rear to front, so

pay close attention to length and position.

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

sticking out on each side of the boom. Once all are centered, sight down the antenna from the rear

and compare tip symmetry. Look for any

obvious discrepancies and correct if found.

4. Stainless steel SHAFT RETAINERS are used

for securing the elements and insulators.

Always use retainers for permanent and long

term antenna installations. For most portable or

temporary use, the button insulators are

satisfactory and the retainers may be left off.

5. Use thumb and index finger to hold a Shaft

Retainer over end of the 3/8 x 3” push tube

(internal fingers dished into tube). Hold the

element firmly and start the keeper onto the rod

by applying pressure with the push tube. Push

the Shaft Retainer down element until 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 Shaft Retainer too far). Repeat for the opposite side. Continue installing Shaft

Retainers until all elements are locked in place.

6. Mount the DRIVEN ELEMENT FEED BLOCKS to the boom using a single 8-32 screw 1-1/4" long.

Orient with feed and balun connectors as shown on the Dimension Sheet or use OPTIONAL

POLARITY SWITCHING driven element. The ‘T’ block mounts behind the rear driven element.

MASKINGTAPE

OREQUIVALENT

FACEUP

ELEMENTPREPARATION

REFLECTOR

ELEPREP

M.STAAL

5-24-05

FRONTDIRECTOR

400CP30A ASSEMBLY MANUAL

7. Generally the balun is installed in one long loop. Attach balun to the block connectors and tighten

gently using a 7/16" end wrench. Form the balun coax close to the boom and secure with cable ties

(snug but not crushing or kinking the coax).

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

Slide the bars onto the 3/16” rod driven element tips and the 1/4" Feed Block Rods. Position the

Shorting Bars as specified on the DIMENSION SHEET: the distance given is between the outer

face of the Feed Block and the inner face of the Shorting Bar. Align the bars and rods with each

other and tighten the sets crews. NOTE: the shorting bar dimensions are different on the

OPTIONAL circular switched driven element.

9. Now attach all the cables. The two medium length cables are the 1/2 wave baluns. The long coax

cable goes to the front driven element. And the short cable goes to the rear driven element. Tighten

the connectors lightly with a 7/16” end wrench.

REMEMBER CENTER MOUNTED ANTENNA MUST BE PLACE ON A FIBERGLASS OR OTHER

STRONG, NON CONDUCTIVE MAST AND THE FEEDLINES MUST RUN OFF THE REAR OF

THE ANTENNA. THIS PREVENTS THE CIRCULAR FIELD OF THE ANTENNA FROM BEING

DISTORTED BY A METALIC MAST OR METALIC FEEDLINE.

10. For center mounted antennas, the boom to mast plate is normally mounted as close as possible to

the balance point (with feedline or a temporary equivalent attached). For rear mounted antennas,

use the boom length provided behind the reflector element. Keep mounting plate at least 1" from

any element. Secure plate with two U-bolts and the stainless nuts and lock washers provided. DO

NOT OVER TIGHTEN. Additional U-bolts and stainless nuts / lock washers are provided for

mounting the antenna to your mast. THIS COMPLETES THE ANTENNA ASSEMBLY.

11. For optimum performance, mount antenna high and in the clear. Always use high quality coax and

connectors. Old, corroded, or poor quality materials can SERIOUSLY affect VSWR, gain, and

pattern. If possible, test the antenna, connectors and feedline BEFORE installation. At 6' in height,

the antenna will exhibit performance approaching the specifications. If it doesn't, check feedline

and connectors for continuity and shorts. Check antenna shorting bars, element placement and

length, against Dimension Sheet.

12. MOUNTING AND STACKING INFORMATION

Rear mounted antennas can generally be mounted in any polarization to any type of mast,

conductive or non-conductive.

Center mounted antennas can also be mounted in any polarity. However, a mast or crossboom

in-line (parallel) with the element plane must be non-conductive. Anything conductive in the

element plane will disrupt the pattern and reduce performance (even the feedline). When a non-

conductive mast or crossboom is in-line with elements, route feedline away at right angles to the

elements and reattach at least 6" beyond element tips. Fiberglass is the recommended material for

a non-conductive mast or crossboom because of it's strength and weather resistance.

Stacking: See the Dimension Sheet for stacking separation dimensions.

1. All driven element blocks MUST be oriented to the same side of boom.

2. All boom-to-mast plates MUST be mounted at the same point on the boom.

3. Feed / phasing lines MUST be of equal electrical length or, ideally, multiples of 1 wavelength in

order to maintain equal phasing in the array.

M2 ANTENNA SYSTEMS, INC.

4402 N. Selland AVE., FRESNO, CA 93722

(559) 432-8873 FAX: 432-3059

www.m2inc.com Email: [email protected]

400CP30A ASSEMBLY MANUAL

400CP30A DIMENSION SHEET

NOTE:

RIGHT HAND CIRCULARITY SHOWN

400CP30A CP SWITCH DIMENSION SHEET

NOTE:

RIGHT HAND CIRCULARITY SHOWN

400CP30A DRIVEN ELEMENT CABLE ROUTES

D.E. BALUN

PHAS LINE

1/4 WAVE

PHASE LINE

3/4 WAVE

JUNCTION BLOCK

SCREW, 8-32 X 1-1/4”

D.E. BLOCK

D.E. BALUN

D.E. BLOCK

SCREW, 8-32 X 1-1/4”,SS

D.E. BALUN

PS DRIVEN

ELEMENT BLOK

PHASE LINE

3/4 WAVE

JUNCTION BLOCK

SCREW, 8-32 X 1-1/4”

PHASE LINE

1/4 WAVE

D.E. BALUN

D.E. BLOCK

SCREW, 8-32 X 1-1/4”,SS

400CP30A POLARITY SWITCH CABLE ROUTES

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

BOOM SECTION #1, 1.0 X .058 X 60" SOE .................. 1

BOOM SECTION #2, 1.0 X .058 X 58" SOE .................. 1

BOOM SECTION #3, 1.0 X .058 X 28.75" ...................... 1

BOOM-TO-MAST PLATE, 3 X 4 X 1/8”(M2APT0019).... 1

ELEMENT SET , 3/16” X SEE DIM” SHEET .................. 1

DRIVEN ELEMENT ASSEMBLY, .................................. 2

JUNCTION BLOCK ASSEMBLY (SADE0065)............... 1

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

PHASE LINE, LONG, 3/4 WAVE RG-6U........................ 1

PHASE LING, SHORT, 1/4 WAVE RG-6U ..................... 1

U-BOLT AND CRADLE, 2" ............................................. 2

U-BOLT, 1-1/2" ............................................................... 2

U-BOLT 1” , NO CRADLE............................................... 2

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

IN HARDWARE BAG:

SHORTING BAR, 1/8 AND 3/16 HOLES......................... 4

BUTTON INSULATORS ................................................... 60

SHAFT RETAINER, (KEEPER) SS .................................. 60

NUT, 5/16-18 SS............................................................... 4

LOCKWASHER, 5/16 SS.................................................. 4

NUT, 1/4-20, SS................................................................ 4

LOCK WASHER, 1/4” SPLIT RING , SS .......................... 4

SCREW, 8-32 X 1-1/4 SS ................................................. 7

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

LOCKNUT, 8-32 SS.......................................................... 4

CABLE TIE, NYLON ........................................................ 4

ALLEN HEAD WRENCH, 5/64” ........................................ 1

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

OPTIONAL CIRCULARITY SWITCH PART LIST

DESCRIPTION QTY

INTEGRAL DRIVEN ELEMENT AND SWITCH ASSEMBLY 1

SCREW, 8-32 X 1-1/4” , SS 2

M2 ANTENNA SYSTEMS, INC.

4402 N. SELLAND AVE.

FRESNO, CA 93722

(559) 432-8873 FAX: 432-3059

www.m2inc.com Email: [email protected]

400CP30A PARTS & HARDWARE

400CP30A (ASSEMBLED) PARTS & HARDWARE

DESCRIPTION ................................................................………..QTY

BOOM SECTION #1, 1.0 X .058 X 60" (ASSEMBLY)……………..1

BOOM SECTION #2, 1.0 X .058 X 58" SOE (ASSEMBLY)……….1

BOOM SECTION #3, 1.0 X .058 X 28.75" (ASSEMBLY)………….1

BOOM-TO-MAST PLATE, 3 X 4 X 1/8”(M2APT0019) ....………….1

U-BOLT AND CRADLE, 2"..............................................………….2

U-BOLT, 1-1/2" ................................................................………….2

U-BOLT 1”, (NO CRADLE)..............................................………….2

ZINC PASTE ...................................................................………….1

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

IN HARDWARE BAG:

NUT, 5/16-18 SS ...............................................................………...4

LOCKWASHER, 5/16 SS ..................................................………...4

NUT, 1/4-20, SS ................................................................………...4

LOCK WASHER, 1/4” SPLIT RING , SS...........................………...4

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

LOCKNUT, 8-32 SS ..........................................................………...4

ALLEN HEAD WRENCH, 5/64”.........................................………...1

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

M2 ANTENNA SYSTEMS, INC.

4402 N. SELLAND AVE.

FRESNO, CA 93722

(559) 432-8873 FAX: 432-3059

www.m2inc.com Email: [email protected]

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