M2 Antenna Systems 235-11 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

Rev.00

Model .........................................235-11

Frequency Range.......................230 To 240 MHz

*Gain ..........................................15.07 dBi

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

Beamwidth ...............................E=30 deg. H=35 deg.

Feed type ...................................“T” Match

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

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

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

Power Handling..........................1200W

Boom Length / Dia......................141” / 1-1/2”

Maximum Element Length..........25-3/4”

Turning Radius:..........................80”

Stacking Distance.......................84” High & 80” Wide

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

Wind area / Survival...................1.1 Sq. Ft. / 100 MPH

Weight / Ship Wt.........................8 Lbs. / 13 Lbs.

M2 Antenna Systems, Inc.

Model No: 235-11

FEATURES:

Performance has been computer optimized to meet your application. Physical construction

emphasizes long term electrical and mechanical durability. Elements are rod 5/16” 6061-T6 alumi-

num, grounded to the boom. The driven element “T” Match uses a CNC machined central block with

O-ring sealed connectors. Internal connections are encapsulated in a silicone gel with a dielectric

strength 3.7 times greater than air for enhanced power handling. Balun connectors are triple O-ring

sealed to the coax.

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

TOOLS REQUIRED: Screwdriver, 11/32 wrench, socket or spintite, a 7/16" and 1/2" wrench

or socket, tape measure. For best results please review instructions before assembly.

1. Assemble the boom (SEE DIMENSION SHEET).

2. Install the boom to mast plate with two 2” U-bolts and cradles, placing it at about 53” from

the rear of the boom.

3. Layout the elements using dimension sheet and Install using 6-32 X 1” screws to hold

elements in place. Note: Leave Driven Element Rod screw lose until shorting bars are

positioned (SEE DRIVEN ELEMENT DETAIL PAGE).

4. Install Driven Element Assembly & Shorting Bars.

(SEE DRIVEN ELEMENT DETAIL PAGE & DIMENSION SHEET).

5. Install the two gold SEAL NUTS on the Driven Element Balun connectors with the black

neoprene face out. Locate the 1/2 wavelength balun cable assembly and form into a large "U"

shaped loop. Tighten up the 7/16" balun connector nuts gently with a 7/16" end wrench first.

Then run the seal nuts up against the face of the connectors and tighten about 1/2 turn more

with a 1/2" end wrench. Tuck Balun into rear of boom and secure.

6. Install the feed line. Route feed line on the underside of boom towards Boom to Mast Plate

and secure with nylon ties.

This completes the assembly.

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 FAX: 432-3059

www.m2inc.com Email: [email protected]

235-11 ASSEMBLY MANUAL

2M4 ASSEMBLY MANUAL

235-11 DIMENSION SHEET

235-11 DRIVEN ELEMENT DETAIL

NOTE:

TUCK BALUN INTO REAR OF BOOM AS SHOWN BELOW.

SECURE WITH TAPE OR NYLON TIES.

235-11 BOOM TO MAST PLATE DETAIL

DESCRIPTION QTY

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

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

BOOM SECTION #3, 1-1/2” X .058 X 27”............................................................... 1

ELEMENT ROD, 5/16” X SEE DIM SHEET............................................................ 11

DRIVEN ELEMENT ASSEMBLY............................................................................ 1

BALUN CABLE, RG-6U X 22-1/2” .......................................................................... 1

SHORTING BAR, 3/4” X 1/4” X 1-7/8”.................................................................... 2

BOOM TO MAST PLATE, 4 X 6 X 1/4” (M2APT0022) ........................................... 1

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

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

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

HARDWARE

NUT, 5/16-18 SS..................................................................................................... 8

LOCKWASHER 5/16 SS......................................................................................... 8

SCREW, 8-32 X 1-3/4”, SS..................................................................................... 5

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

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

SCREW, 6-32 X 1”,SS............................................................................................ 15

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

ALLEN WRENCH 5/64 ........................................................................................... 1

NYLON TIES LARGE ............................................................................................. 5

Carefully designed and manufactured by:

M2ANTENNA SYSTEMS, INC.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 FAX: 432-3059

www.m2inc.com Email: [email protected]

2M4 ASSEMBLY MANUAL

235-11 PARTS & HARDWARE

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