Microwave Radio Communications Ellipse 2000 Installation Manual

Ellipse 2000

2 GHz or 7 GHz

Transmit Antenna

Document: 400221-1

Revision A

November 1997

Installation Guide

Overview – page 3

Assembly – page 4

Dimensions – page 5

Wiring – page 6

WARNING

PROPRIETARY NOTICE

The information and design contained within this manual was originated by
and is the property of California Microwave Incorporated and Microwave
Radio Communications. Microwave Radio Communications reserves all
patent proprietary design, manufacturing, reproduction use, and sales
rights thereto, and to any articles disclosed therein, except to the extent
rights are expressly granted to others. The foregoing does not apply to
vendor proprietary parts.

To allow for the introduction of design improvements, specifications are
subject to change without notice.

©2000 Microwave Radio Communications

Printed in the U.S.A.

October 2000

Microwave Radio Communications
101 Billerica Ave.
North Billerica, MA 01862-1256
USA

TEL: [phone]
FAX: [phone]

E-mail:
[e-mail]
Web Site:
http://www.mrcbroadcast.com

WARNING

Raising or lowering the antenna
near power or high tension lines
can result in death or serious
injury.

3

Ellipse 2000 Installation Guide

400221-1 Rev. A

Overview

Main Features

• 3-4 dB additional gain over the traditional 2A20/7A30(50%
additional range)

• Elimination of all electro-mechanical switches

• High reliability, lower cost of ownership, less down time

• Switching performed through the latest advancements in solid­state technology

• Light weight, a superior construction

General

The Ellipse 2000 Transmit Antenna is the latest addition to the MRC
mobile antenna line. It offers 23 dB gain at 2 GHz, and 34 dB gain at7
GHz, 3-4 dB over the standard MRC2A20/7A30 antenna.

The Ellipse 2000 is a low profile, offset-fed antenna. The reflector is
compression molded fiberglass construction with an integrated
reflective surface. Improved reliability is accomplished by the feed
design which features the latest in solid-state switching technology for
the polarization selection.

The elimination of all coaxial RF relays also reduces the DC operating
power and provides greater isolation. The superior construction and
lightweight design of the Ellipse 2000, coupled with its solid-state
switching technology and additional gain, make it a solid choice for
mobile van applications.

General

Antenna Type: ..............................................Offset Fed Parabola

Beamwidth, typical (-3 dB):

*Gain is for basic antenna, net of switching options

Mechanical Characteristics

Construction:

Compression molded fiberglass with integrated reflective surface

Reflector: .....................................54.5” x 37.5” (138.5 x 95.3 cm)

System Weight:....................................................... 35 lbs (16 kg)

Temperature Range: ............................................ -30˚C to +60˚C

Feed Specifications

Configurations: ...................2 GHz, 7 GHz or 2/7 GHz Dual Band

Polarization: ..................................................................................

Quad Pol standard, switching between right circular, left circular,

vertical and horizontal polarization performed through the latest

advancements in microwave circuitry

Ordering Information

ELLIPSE-2 2 GHz Quad Pole
ELLIPSE-7 7 GHz Quad Pole
ELLIPSE-27 2/7 Dual Band Quad Pole,
Simultaneous Switching, TX

2 GHz

6.5/7 GHz

Operating Frequency: 1.99-2.5 GHz 6.4-7.4 GHz
Gain, nominal*: 23 dBi 34 dBi

2 GHz

6.5/7 GHz

Azimuth: 9.0

˚

2.5

˚

Elevation: 16

˚

5.0

˚

F/B Ratio: -28 dB min. -28 dB min.
Side Lobe Rejection: -20 dB -20 dB

4

Ellipse 2000 Installation Guide

400221-1 Rev. A

Assembly

Step 1

Align the elliptical dish to the antenna placing the notch down or toward the antenna mount.

Step 2

Mount the elliptical dish to the antenna mount using the four mounting bolts.

Caution:

To prevent damage to the elliptical dish, torque the mounting to no more than 25 inch pounds.

Figure 1 ELLIPS 2000 with Antenna Assembly and Pan and Tilt

UPPER MOUNTING BOLTS

NOTCH

LOWER MOUNTING BOLTS

5

Ellipse 2000 Installation Guide

400221-1 Rev. A

Dimensions

Figure 2 Ellipse 2000 Dimensions

(134.62 mm)

53.00"

4.00"

(10.16 mm)

4.00"

(10.16 mm)

(78.385 mm)

30.86"

(81.99 mm)

32.28"

8.19"

(20.80 mm)

4.00"

(10.16 mm)

4.00"

(10.16 mm)

4.50"

(11.43 mm)

SECTION A

SECTION A

EL_DIM

6

Ellipse 2000 Installation Guide

400221-1 Rev. A

Wiring

Figure -3 shows the mounting instructions and wiring diagram for the PA200 and PA700 a power amplifiers.

Figure 3 Wiring Diagram PA200 and PA700