Andrew Grid Sectional Parabolic Antennas User Manual

product specifications

The Mag Grid Antenna series offers

a commercial grade product at an
exceptionally competitive price.

The die cast reflector is fabricated using an automated
injection molding process which ensures consistency in
performance. The high-grade magnesium alloy material
is lightweight, does not rust, and memorizes the
antenna’s parabolic curve to maintain its shape over
time. The result is the only low cost terrestrial
microwave antenna sufficiently durable to survive
changing climate conditions.

The patented grid reflector design provides field
reliability and ease of handling and installation. No
secondary coating is required to prevent rust and
corrosion. Breakdown packaging saves freight costs,
and optional factory assembly is available.

Mag Grid series antenna products are also available
with an industrial grade mounting option. This option
features a heavier gauge L-bracket, mast clamp, and u­bolt with mounting centers compatible for pipes of up
to 2.5 inches in diameter. The L-bracket attaches using
4 previously unoccupied holes in a thicker section of the
reflector. These holes are located farther from the
center of the assembled unit, spreading forces over a
wider range of reflector space. There are no changes to
hardware style or assembly and installation procedures.
The result is an antenna very suitable for higher
elevation installations and tower mounts without the
cost and complexity of traditional broadcast tower
antenna mounts.

Features

• Commercial grade durability

• Lower production, shipping, and handling costs

• Lightweight, durable materials

• RG8 pigtail – 24" and 40” extensions

• Up to 60° tilt adjust

Connecting the Wireless World

The low cost antenna
durable enough to
withstand changing
climates

Mag Grid Sectional Parabolic Antennas

For 1.7–2.1, 2.1–2.7 and 2.4–2.5 GHz

product specifications

All designs, specifications, and availabilities of
products and services presented in this bulletin
are subject to change without notice.

Bulletin PA-100310-EN (02/05) Copyright © 2005
Andrew Corporation, Orland Park, IL 60462 USA

Electrical

18T-1900/2127/2400 26T-1900/2127/2400

Gain, dBi . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14/16/17 ±1 . . . . . . . . . . . .21/24/23 ±1

Polarization isolation, dB . . . . . . . . . . . . . . . . . .20 . . . . . . . . . . . . . . . . . . . .24

Typical side lobe suppression, dB . . . . . . . . . . .8 . . . . . . . . . . . . . . . . . . . . .20

Beamwidth

-3 dB, degree . . . . . . . . . . . . . . . . . . . . . . . . . . .14 . . . . . . . . . . . . . . . . .14/7.5/7.5

-10 dB, degree . . . . . . . . . . . . . . . . . . . . . . . . . .35 . . . . . . . . . . . . . . . . . .24/11/11

Front/back ratio, dB . . . . . . . . . . . . . . . . . . . . . .>20 . . . . . . . . . . . . . . . . . . .>30

Impedance, ohm . . . . . . . . . . . . . . . . . . . . . . . . . .50 . . . . . . . . . . . . . . . . . . . .50

VSWR typical . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5:1 . . . . . . . . . . . . . . . . . .1.5:1

Pigtail extension, in (m) . . . . . . . . . . . . . . .24" RG8 (0.61) . . . . . . . . . . .24" RG8 (0.61)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40” RG8 (1.0) . . . . . . . . . . . .40” RG8 (1.0)

Mechanical

18T-1900/2127/2400 26T-1900/2127/2400

Output connector* . . . . . . . . . . . . . . . .“N” type male/female . . . . . .“N” type male/female

Mounting O.D. pipe

Standard, in (mm) . . . . . . . . . . . . . . . . . . .1–2 (25–51) . . . . . . . . . . . . .1–2 (25–51)

Industrial, in (mm) . . . . . . . . . . . . . . . . . . . . . .— . . . . . . . . . . . .1.25–2.5 (0.028 x 0.063)

Vertical tilt, degree . . . . . . . . . . . . . . . . . . . . . . .0–60 . . . . . . . . . . . . . . . . . .0–60

Wind load

Operational, mph, lb (kg) . . . . . . . . . . . .75, 25 (11.34) . . . . . . . . . .75, 63.8 (28.94)

Survivable, mph, lb (kg) . . . . . . . . . . . .140, 77.9 (35.33) . . . . . . . .140, 199.5 (90.49)

Reflector type . . . . . . . . . . . . . . . . . . . . . . . .Parabolic grid . . . . . . . . . . . .Parabolic grid

Reflector material . . . . . . . . . . . . . . . . .Cast magnesium alloy . . . . .Cast magnesium alloy

Dimensions, in (mm) . . . . . . . . . . . . . . . . . . .16 x 20 x 15 . . . . . . . . . . .23.5 x 39.25 x 15

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(406 x 510 x 380) . . . . . . . .(600 x 997 x 380)

Weight

Antenna, lb (kg) . . . . . . . . . . . . . . . . . . . . . .1.8 (0.81) . . . . . . . . . . . . . . .4.6 (2.07)

Standard mount, lb (kg) . . . . . . . . . . . . .0.06 (0.027) . . . . . . . . . . . . .0.09 (0.041)

Industrial mount, lb (kg) . . . . . . . . . . . . . . . .— . . . . . . . . . . . . . . . . .1.5 (0.675)

* N male connector standard; N female available by adding “F” ( i.e. 26T-2400F-1).
** Robust 1.5”–2.5” O.D. version available. Contact factory.

Ordering Information

Frequency Band Gain Single Pack Bulk Pack

MHz dBi Type Number Type Number

1700–2100 . . . . . . . . . . .14 . . . . . . . . . . . .18T-1900-1 . . . . . . . . .18T-1900-10 (10 per)

1700–2100 . . . . . . . . . . .21 . . . . . . . . . . . .26T-1900-1 . . . . . . . . . .26T-1900-6 (6 per)

2100–2700 . . . . . . . . . . .16 . . . . . . . . . . . .18T-2127-1 . . . . . . . . .18T-2127-10 (10 per)

2100–2700 . . . . . . . . . . .24 . . . . . . . . . . . .26T-2127-1 . . . . . . . . . .26T-2127-6 (6 per)

2400–2500 . . . . . . . . . . .17 . . . . . . . . . . . .18T-2400-1 . . . . . . . . .18T-2400-10 (10 per)

2400–2500 . . . . . . . . . . .23 . . . . . . . . . . . .26T-2400-1 . . . . . . . . . .26T-2400-6 (6 per)

Extended Length

2100–2700 . . . . . . . . . . .24 . . . . . . . . .26T-2127-100CM-1 . . . .26T-2127-100CM-6 (6 per)

Specifications for Mag Grid Sectional Parabolic Antennas

Connecting the Wireless World

Andrew Corporation

10500 W. 153rd Street

Orland Park, IL 60462 USA

Customer Support Center

From North America:

Telephone: [phone]
Fax: [phone]

International:

Telephone: [phone]
Fax: [phone]

Internet

www.andrew.com

Fax-On-Demand

From North America:

1-800-861-1700

International:

[phone]

90

60

30

120

150

180

210

240

270

300

330

0

-40-40

00

-10-10-10

-20

-20-20

-30

-30-30

-40

90

60

30

120

150

180

210

240

270

300

330

0

-40-40

00

-10-10-10

-20

-20-20

-30

-30-30

-40

18T-2400-x

Gain = 17.73 dBi
Frequency = 2.5 GHz
10 dB BW = 33.7º
3 dB BW = 12º

26T-2400-x

Gain = 23.91 dBi
Frequency = 2.5 GHz
10 dB BW = 11.6º
3 dB BW = 5.9º