M2 Antenna Systems 432-6WL 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.03

Model .........................................432-6WL

Frequency Range.......................420 To 440 MHz

*Gain ..........................................18.04 dBi

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

Beamwidth ...............................E=22° H=24°

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

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

Maximum VSWR........................1.2:1 Typical

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

Power Handling..........................1 kW

Boom Length / Dia......................14’ 6”’ / 1”

Maximum Element Length..........13-7/8”

Turning Radius:..........................96”

Stacking Distance.......................65” High & 65” Wide

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

Wind area / Survival...................0.85 Sq. Ft. / 100 MPH

Weight / Ship Wt.........................4.6 Lbs. / 7 Lbs.

M2 Antenna Systems, Inc.

Model No: 432-6WL

FEATURES:

The 432-6WL is the ultimate antenna: computer and range optimized for very high gain and excellent pattern

across its bandwidth. It can be mounted vertically or horizontally and is also ideal for OSCAR, FM, LONG HAUL TROPO,

ETC. Its lightweight, yet sturdy, construction keeps the wind area low without compromising the 100 MPH wind survival

rating. We guarantee you will be impressed.

The heart of the 432-6WL is a unique Driven Element Module with superior weather resistance and power han-

dling abilities. The module is CNC machined from a solid aluminum block, features O-ring sealed connectors and internal

connections embedded in a special silicone gel that seals out weather and improves power handling. The Balun connect-

ors are triple-sealed to the coax. Other key mechanical and electrical parts are CNC machined from 6061-T6 aluminum

and all hardware except U-bolts is stainless steel.

The 432-6WL offers you uncompromising performance, enduring mechanical construction, and long term electri-

cal integrity. Where else but M2.

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

TYPICAL TOOLS REQUIRED: measuring tape, std slot or phillips screwdriver, 11/32, 7/16, and 1/2

spin-tite, end wrenches and / or sockets.

1. Lay out the boom sections and assemble using the DIMENSION sheet as a guide for position and

hardware.

2. Lay out the elements by length and position as shown the DIMENSION sheet. Find rough center of

the reflector (longest) element 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. 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 specified on Dimension

Sheet.

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

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

432-6WL ASSEMBLY MANUAL

for the opposite side. Continue installing Shaft Retainers until all elements are locked in place.

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

than the boom diameter. Orient with feed and balun connectors oriented as shown on the

Dimension Sheet.

7. Thread a 3/8” SEAL-NUT fully onto each balun connector on the feed block, with black Neoprene

side facing out. Generally the balun is installed in one long loop. Rear mounted baluns may be

coiled once if length extends beyond boom. Attach balun to the block connectors and tighten gently

using a 7/16" end wrench. Then back the Seal Nuts out and finger-tighten firmly up against the face

of the connectors (or tighten gently with 1/2" 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 setscrews.

9. 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 / lockwashers are provided for

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

10. 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.

11. 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.

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]

432-6WL ASSEMBLY MANUAL

432-6WL DIMENSION SHEET

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

BOOM SECTION, 1 X .058 X 60 SOE.................. 2

BOOM SECTION, 1 X .058 X 60 STR.................. 1

ELEMENTS, 3/16 ROD x Dimension Sheet ......... 21

FEED BLOCK, ..................................................... 1

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

BOOM-TO-MAST PLATE, 3 X 4 X .188".............. 1

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

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

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

IN HARDWARE BAG:

BUTTON INSULATORS ......................................42

SHAFT RETAINER, SS .......................................42

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

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

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

LOCKWASHERS, 1/4 SS ....................................4

SCREW, 8-32 X 1-1/4 SS....................................5

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

SHORTING BAR..................................................2

SETSCREW, 8-32 X 1/4, SS ...............................4

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

SEAL NUTS, 3/8-32.............................................2

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

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

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 Fax: 432-3059

www.m2inc.com Email: [email protected]

432-6WL PARTS & HARDWARE

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