M2 Antenna Systems FD35.5 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

Model .........................................FD35.5

Frequency Range.......................35-36 MHz

Gain............................................6.5 dBi / 4.36 dBd

Front to back ..............................10 dB Typical

Beamwidth ...............................E=130° (Azimuth)

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

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

Maximum VSWR........................< 1.5:1

Polarity........................................Vertical

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

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

Element Length ..........................131”

Mounting.....................................2” Mast

Wind Survival .............................100 MPH

Weight / Ship Wt.........................45 Lbs. / 55 Lbs.

M2 Antenna Systems, Inc.

Model No: FD35.5

FEATURES:

The FD35.5 Dipole antenna offers performance characteristics for specialized operations within the 46-36 MHz region.

The FD35.5 Dipole produces a smooth, vertically polarized pattern. No rotation or steering is required. The FD35.5

Dipole’s rugged, weatherproof construction suits mobile and marine applications as well as fixed, land based installations

in hostile environments.

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

35.5 MHz Dipole Assembly Manual

TYPICAL TOOLS REQUIRED: 7/16, 1/2 spin-tight, end wrenches and or sockets and large adjustable wrench.

NOTE, ZINC PASTE HAS BEEN SUPPLIED TO ADD LIFE TO THE CONNECTIONS IN THIS ANTENNA. IT

CAN ALSO BE USED ON ALL THREADS AS ANTI-SEIZE COMPOUND.

1. Assemble the DIPOLE AND OPTIONAL REFLECTOR referring to the ASSEMBLY DETAIL drawing. Bolt

sizes and other details should make assembly very straight forward. Tighten all 1/4-20 hardware to 10 inch

pounds of torque except on the balun. Hold the bottom nut on each balun stud while tightening the top nut

securely.

2. Use good quality 50 Ohm coax such as Times Wire and Cable LMR-400 or larger.

3. The Mast or Tower leg clamp assembly will accommodate up to 6” diameter tube. It can also be tilted

DOWN as much as 15 degrees to accommodate a tapered tower leg configuration. Install the 2” machined

saddles for the antenna boom. Use bolts, 5/16-18 x 3-1/2” with flat washers on each side and 5/16-18 lock

nuts. Slide in the boom so it just protrudes past the second saddle set, align the dipole vertically (or

horizontally) and tighten the 5/16” nuts. Now position the plate so the antenna boom is at the bottom of the

plate. The large saddles for the mast / tower leg attach on the opposite side of the plate. Mount the

assembly on the tower leg or mast and adjust the dipole perpendicular to the horizon. Then tighten the 1/2”

bolt assemblies. Add the two extra nuts to “jam” the assembly for sever vibrations.

35.5 MHz DIPOLE WITH OPTIONAL REFLECTOR

BALUN LEADS

INSTALLATION DETAIL

FORM BALUN LEADS

AS SHOWN IN PICTURE

PARTS LIST 35.5 MHz DIPOLE AND OPTIONAL REFLECTOR

DESCRIPTION QTY

Boom, 2” x .125 x 84” ...................................................................... 1

Dipole Element, 1” x .058 x 72” ....................................................... 2

Reflector Element, 1” x .058 x 82” ................................................... 2

Center Insulator, 7/8 x 30” Fiberglass Rod ...................................... 1

Ring Clamp, 2” Machined ................................................................ 2

Balun, 330 (38” wires) 30-100 MHz ................................................. 2

Balun Leads, 1/2” x 4-3/8” x .062..................................................... 1

Mounting Plate, Balun Aluminum..................................................... 1

U-Bolt and Saddle, 2” ...................................................................... 1

U-Bolt and Saddle, 2-1/2” (Balun).................................................... 1

Mast Plate, Steel (Plated with Slot) ................................................. 1

Saddle, 2” Machined ....................................................................... 4

Large Saddle Clamp (for mast or tower leg mounting) .................... 2

Assembly Instructions...................................................................... 1

HARDWARE

Threaded Rod, 1/2-13 x 12” Zinc..................................................... 2

Nut, 1/2-13 SS ................................................................................. 6

Lock Washer, 1/2” Split Ring ........................................................... 4

Flat Washer, 1/2” SS ....................................................................... 4

Bolt, 5/16-18 x 3-1/2” SS ................................................................. 4

Lock Nut, 5/16-18 SS....................................................................... 4

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

Lock Washer, 5/16” SS.................................................................... 4

Flat Washer, 5/16” SS ..................................................................... 8

Bolt, 1/4-20 x 2” SS.......................................................................... 4

Bolt, 1/4-20 x 1-3/4” SS ................................................................... 2

Bolt, 1/4-20 x 1” SS.......................................................................... 2

Lock Nut, 1/4-20 SS......................................................................... 4

Lock Washer, 1/4” Split Ring SS ..................................................... 2

Flat Washer, 1/4” SS ....................................................................... 2

Penetrox Paste, Cup........................................................................ 1

M2 Antenna Systems, Inc.

4402 N. Selland Ave.

Fresno, CA 93722

(559) 432-8873 FAX: 559-432-3059

www.m2inc.com Email: [email protected]

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