M2 Antenna Systems 450-800-12 Manual de usuario

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

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

Rev.01

Model .........................................450-800-12

Frequency Range.......................390 To 650 MHz

*Gain ..........................................12 To 13 dBi

Front to back ..............................20 dB Nominal

Beamwidth ...............................46° Nominal

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

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

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

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

Polarity........................................RHCP or LHCP

Mounting.....................................Adjustable AZ-EL on 2”

Operating Temperature..............-50 F To 130 F

Wind area / Survival...................100 MPH

Weight / Ship Wt.........................35 Lbs.

M2 Antenna Systems, Inc.

Model No: 450-800-12 HELICAL ANTENNA

FEATURES:

The M2 450-800-12 Helix antenna offers performance characteristics for specialized fixed and rapid deploy oper-

ations within the 400 to 600 MHz band. It is perfect for either terrestrial or satellite applications. The antenna is supplied

with a manually adjustable Azimuth / Elevation mount and a counter weight. The antenna is shipped with the helix assem-

bled less ground plane. Finishes are optional. The steel adjustable mounting fixture and counterweight are zinc plated.

Optional arrays of 2 or more are available. Other frequency ranges and gains are also available down to 100 MHz. Com-

plete motorized, computer controlled AZ-EL systems are also manufactured by M2.

Where circular polarity is not required but high bandwidth is, M2 offers a line of various log periodic antennas from 5 to

1300 MHz. If it is antenna related, we probably have made it. Call us with your requirements.

SPECIFICATIONS:

*Subtract 2.14 from dBi for dBd

4402 N. Selland Ave, Fresno CA 93711 (559) 432-8873 FAX (559) 432-3059

www.m2inc.com Email: [email protected]

450-800-12 HELICAL

ANTENNA

TOOLS REQUIRED: #2 Phillips head screwdriver, 11/32 nut

driver and 7/16” socket open end wrench.

1. Unpack the factory assembled HELICAL antenna, the CEN-

TER REFLECTOR PLATE, and the two (2) REFLECTOR

HALVES. Attach the Reflector halves to the Center Reflector

Plate using 8-32 x 1/2” screws and locknuts. Lightly lubricate

the rear end of the helix center tube and inside the collar. Then

slide the assembly up to the end of the helix element. Align the

holes of the helix assembly with that of the mounting plate collar

and secure with a 1/4-20 x 1-3/4” bolt and locknut. Slide the

‘N’-connector block assembly on the helix and rotate the con-

nector down through the large hole in the plate. Secure the

block to the plate with four (4) 8-32 x 1-1/2” screws

and locknuts Now install the 1/4-20 x 1/4” set screw

in the round end of the feed block assembly and

tighten, using the supplied 1/8” Allen wrench. Finally

mount the matching block and rotate it so it is paral-

lel to the helical tube. The final position can be ad-

justed for best match at a specific frequency if de-

sired..

2. Assemble the Elevation Bracket hardware as

shown on the assembly drawing. For the time being

set the elevation angle to 0 deg. (mast bracket per-

pendicular to the antenna). Attach the 1” saddle

adapter plate to the elevation bracket. Next, using

four 1/4-20 x 1-1/2” bolts and locknuts, attach the

four saddles loosely to the saddle adapter plate.

Now slide the entire assembly onto the back of the

boom, position right up against the mounting plate

collar, and set the feed connector to the desired

rotational orientation. Tighten the four saddle bolts.

3. With an associate, slide the antenna onto the

top of a 2” support pole. Point the antenna to the

proper azimuth and elevation angles, and tighten all

of 1/4-20 hardware on the mast clamp bracket.

This completes the assembly.

450-800-12 HELICAL ANTENNA

PARTS LIST

DESCRIPTION QTY

HELIX AND MAIN BOOM ............................. 1

CENTER MOUNTING PLATE, WELDED ..... 1

REFLECTOR PLATE.................................... 2

FEED BLOCK W/ “N” CONN......................... 1

MATCHING POST, 1/4X3/4X1-1/2” .............. 1

SADDLE ADAPTER PLATE.......................... 1

SADDLES, 1-1/2”.......................................... 4

ELEVATION BRACKET................................ 1

MAST BRACKET (2 halves).......................... 1

REAR BOOM STUB, 1-1/2 X 18” ALUM....... 1

COUNTER BALANCE 4” DIA........................ 1

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

HARDWARE BAG

DESCRIPTION QTY

BOLT, 1/4-20 x 3/4” SS..................................7

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

BOLT, 1/4-20 x 1-3/4” SS...............................1

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

BOLT, 1/4-20 X 2-1/2”,SS..............................4

BOLT, 1/4-20 X 4-1/2”.SS..............................1

SET SCREW, 1/4-20 x 1/4” SS......................1

FLATWASHER, 1/4”, SS................................4

LOCKNUT, 1/4-20, SS...................................7

SCREW, 8-32 X 1-1/2”, SS ...........................4

SCREW, 8-32 X 3/4”, SS...............................12

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

LOCKNUT, 8-32 SS.......................................16

LOCKWASHER, #8 SPLIT RING , SS...........1

1/8 ALLEN WRENCH ....................................1

450-800-12 HELICAL ASSEMBLY MANUAL

PHOTOS OF RANGE TEST SETUP AND CLOSE UPS OF THE FEED

SYSTEM AND THE MANUAL TILT MECHANISM.

450-800-12 HELICAL ASSEMBLY MANUAL

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