M2 Antenna Systems 436CP30 Manuale utente
M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722
Tel: (559) 432-8873 Fax: (559) 432-3059 Web: www.m2inc.com
©2017 M2 Antenna Systems Incorporated 2/23/17
Rev.04
Model .........................................436CP30
Frequency Range.......................432 To 440 MHz
*Gain ..........................................15.50 dBic
Front to back ..............................18 dB Typical
Elipticity ......................................1.5 dB Typical
Beamwidth ...............................30° Circular
Feed type ...................................Folded Dipole
Feed Impedance. .......................50 Ohms Unbalanced
Maximum VSWR........................1.6:1 Max
Input Connector..........................“N” Female others opt.
Power Handling ..........................600 Watts
Boom Length / Dia......................117” / 1”
Maximum Element Length..........12-7/8”
Turning Radius: ..........................62-5/8”
Stacking Distance.......................51” High & 51” Wide
Mast Size....................................1-1/2” to 2” Nom.
Wind area / Survival ...................1 Sq. Ft. / 100MPH
Weight / Ship Wt.........................5 Lbs. / 6 Lbs.
M2 Antenna Systems, Inc.
Model No: 436CP30
FEATURES:
The 436CP30 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 M2436CP30!
SPECIFICATIONS:
*Subtract 2.14 from dBi for dBd
TOOL REQUIRED FOR ASSEMBLY: screwdriver, 11/32 nut driver or wrench, 7/16” and1/2” socket or end
wrenches, measuring tape.
1. Assemble the boom using 8-32 X 1-1/4 screws and locknuts to join sections. Sections may may be swaged
to each other or use 7/8” internal splice sections.
Note: If mounting antenna to a standard H-frame with a T-brace kit, it is important to
install the T-brace coupling bars to antenna before elements. Refer to H-Frame and T-
brace drawings for placement and more information.
ASSEMBLING THE HORIZONTAL ELEMENTS
2. Lay out the elements 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 1.937” 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 it 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. Stainless steel SHAFT RETAINERS lock the elements in
place. They should always be used for permanent and long
term antenna installations. For portable or temporary use, the
button insulators are adequate for holding the elements and
the retainers may be left off.
436CP30 ASSEMBLY MANUAL
To install the stainless steel SHAFT RETAINERS, use thumb and forefinger to hold the retainer over the end
of the PUSH TUBE ( 3/8" x 3" 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 up against
opposite button insulator will help maintain center reference (if you push the first retainer too far, remove
element from boom, push retainer completely off the element, and start over). Install another retainer to the
opposite side of the element. Continue installing retainers until all elements are secured.
6.Mount ASSEMBLY to the HORIZONTAL DRIVEN ELEMENT BLOCK / ROD 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.
7. Install the 8-32 x 1/4” set screws (internal Allen head - tool supplied) into the SHORTING BARS. Slide the
bars onto the 1/8" Driven Element Block Rods and the 3/16" driven element rod. Position the Shorting Bars
at 1/8" from the tips of the 3/16" rods. Align the bars with each other and tighten the set screws.
ASSEMBLING THE VERTICAL ELEMENTS
Note: The vertical element set is shifted forward on the boom by 1/4 wavelength. This increases isolation
between element planes, improving circularity and ease of phasing / matching the two element sets.
8. Repeat steps #2 through #5 for the Vertical elements, using the Dimension Sheet as your guide to lengths
and spacing.
INSTALLATION OF THE VERTICAL DRIVEN ELEMENT BLOCK DETERMINES THE CIRCULARITYOF
THIS ANTENNA. THE ORIENTATION OF THE BLOCK FOR RHC - RIGHT HAND CIRCULARITY, IS
SHOWN ON THE DIMENSION SHEET AND DRAWING AND DESCRIBED BELOW:
9. Viewed from the rear of the boom (rearmost Reflector HORIZONTAL), the VERTICAL Driven Element Block
mounts to the RIGHT 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. 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. A lot of torque is unnecessary. Depending on model and polarity, the Vertical balun may loop
around another element. This is normal. Form balun coax until it is close to the boom and secure with a
nylon cable tie. Also secure the other balun and the matching / phasing harness coax with cable ties. Ties
should be snug but not crushing or kinking the coax.
436CP30 ASSEMBLY MANUAL
11. Use good quality coax and “N” connector for your feedline (see Installation Tips). Secure feed coax near
connector on Junction Block, to provide stress relief. Allow about 60” of 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 cross
boom. 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 the balance point. 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
the plate. Use two 1" U-bolts and the stainless nuts and lock washers provided. DO NOT OVER TIGHTEN.
1-1/2” and 2” U-bolts (and stainless steel nuts / lockwashers) are provided for mounting the antenna to your
NON-CONDUCTIVE mast or cross boom.
INSTALLATION TIPS
13. The 436CP30 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 or cross boom. A mast or
cross boom of any NON-CONDUCTIVE material must be used. Fiberglass is the prime choice for its
strength and weather resistance. Mount the 436CP30 so that element tips are at least 12” from any
conductive material (mast, tower, feed line, etc.).
14. Recommended feed lines, in order of preference:
Andrews or Celwave 1/2” hardline
Times FM-8 or Belden 8214
Try to keep the cable run to under 100 ft. to prevent excessive signal loss.
15. To maintain proper phasing when stacking two or more antennas, mount each with the same orientation of
Driven Element Blocks. DO NOT MOUNT IN MIRROR IMAGE. See the Specification Sheet for stacking
distances. For more detailed stacking information contact M2.
M2ANTENNA SYSTEMS, INC.
4402 N. Selland Ave.
Fresno, CA 93722
(559) 432-8873 Fax: 432-3059
436CP30 ASSEMBLY MANUAL
436CP30 DIMENSION SHEET
NOTE: ANTENNA SHOWN IN RIGHT HAND CIRCULARITY.
DESCRIPTION QTY.
Boom section, 1 x .058 x 60" PLAIN ..........................1
Boom section, 1 x .058 x 59-1/8" SOE ........................1
Boom to mast plate, 3 x 4 x .125" (M2APT0019) .........1
Elements, 3/16" alum. rod x (see dims.) ......................30
Driven element block assembly....................................2
`T' Block assembly (SADE0060) .................................1
Balun, RG-6U halfwave length .....................................2
Phasing line, RG6-U quarterwave length ....................1
Phasing line, RG6-U three quarterwave length ............1
U-bolt and cradle, 2”.....................................................2
U-bolt, 1" no cradle ......................................................2
Assembly instructions ..................................................1
IN HARDWARE BAG
Shorting bars, .75 x 1.532 x .250" (M2ASB0080).........4
Button insulators, 3/16" black ......................................60
Shaft Retainers, 3/16" ss..............................................60
Nut, 5/16-18 ss.............................................................4
Lockwasher, 5/16" ss ...................................................4
Screw, 8-32 x 1-1/4" panhead .....................................5
Set screw, 8-32 x 1/4" ss .............................................8
Locknut, 8-32 ss...........................................................2
Nuts, 1/4-20 ss .............................................................4
Lockwasher, 1/4-20 ss ................................................4
Allen wrench, 5/64" .....................................................1
Push tube, 3/8 x 3" (for keeper installation)..................1
Cable ties, 8" ................................................................4
M2ANTENNA SYSTEMS, INC.
4402 N. Selland Ave.
Fresno, CA 93722
(559) 432-8873 Fax: 432-3059
436CP30 PARTS & HARDWARE
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