WR WA-811 Antenna Distribution System

ANT38

 

WinRadio products are available only to customers in the U.S. and Canada.

This unit is not available for online ordering.

Contact Belinda for ordering information
1-800-438-8155 U.S.& Canada; 828-837-9200; FAX 1-828-837-2216
Monday-Friday: 9 - 11:30am-12:30 - 5pm EST
Technical Support: tech@grove-ent.com

 

The WiNRADiO WA-811 Antenna Distribution System features 4 antenna inputs and 8 receiver outputs, and consists of antenna matrix switches, preamplifiers with an extremely high third order intercept point, and a combination of suitable filters. Fully integrated to achieve the best possible performance over a wide frequency range, this system is eminently suitable for government, defense, law enforcement and other demanding high-end applications.

 

WA-0611/0811 Antenna Distribution Unit The microprocessor-controlled unit can be operated autonomously via a control panel, or remotely via an RS-232 link using Windows-based PC-resident software with an easy-to-use graphical user interface. These units can be used with any third-party equipment, and are particularly suitable for WiNRADiO MS-8000-series Multichannel Surveillance and Monitoring Systems, for which they provide user-transparent, fully automatic antenna switching.

The antenna inputs are configured as follows:

 

Antenna 1 0.15 - 30 MHz
Antenna 2 30 -100 MHz
Antenna 3 100-1500 MHz
Antenna 4 100-1500 MHz
The frequency boundaries can be customized to meet individual customer specifications. For each antenna input, an 18dB switchable attenuator and a band-stop filter for broadcast frequencies can be used. The attenuators and filters can be engaged for each antenna independently, either directly via the front panel or remotely via the serial port.

The unit also contains the following user-switchable filters, in addition to the fixed band preselector filters. These are used to reject broadcast frequencies:

 

Ant. 1 Filter 0.515-1.610 MHz
Ant. 2 Filter 88-108 MHz
Ant. 3 Filter 88-108 MHz
Ant. 4 Filter 88-108 MHz
The unit also contains power supplies for external antenna preamplifiers (+12V is applied to the antenna leads). These voltages are normally switched off by default, and can be selectively enabled/disabled in remote operation mode.

 

Front View

 

Antenna Distribution Unit - Front Panel

The front panel of the WA-811 unit is divided into a keypad area and the status display. The keypad is used to enter the matrix configuration (which receiver is connected to which antenna), to switch on/off the attenuators and band-stop filters, and to enable/disable remote control.

 

Rear View

 

Antenna Distribution Unit - Rear View

The antennas are connected using N-type connectors at the rear of the unit. The receivers are connected via BNC connectors. Connecting to the RS-232 serial port is done via a standard 9-pin connector. An optional second RS-232 port may be installed by special requirement. (This is usually used in high-reliability redundancy systems where the second RS-232 port is connected to a back-up computer equipment.)

Remote Operation

In remote operation mode, the unit will accept commands from the host computer and continue showing the current settings on the front panel status display. The unit can be controlled and its status interrogated via the serial interface, using a set of ASCII commands. For a detailed explanation of the low-level control commands, click here.

 

Control Software

For easy control of the unit from a PC under Windows, virtual control panel software is available, and supplied as part of the package. This software has a self-explanatory graphical user interface which makes it possible for the operator to observe what is happening inside the unit:

 

Antenna Distribution Unit Control Software
Virtual control panel of WA-811

The status of the antenna matrix is observed in a grid of antenna inputs and receiver outputs, and is easily changed by clicking on the intersecting lines. The status of filters and attenuators is shown by highlighting of the active attenuators or filters, and changed by simply clicking on the corresponding function blocks. Note also that power for the external antenna preamplifiers can be controlled from here, by clicking on the associated power supply blocks.

Technical Specifications

 

Configuration

4 inputs / 8 outputs
Fully non-blocking

Gain

0 dB typ (max. +5 dB, min. -1 dB)

Frequency range

0.15 MHz to 1500 MHz

Impedance

50 ohm (all inputs and outputs)

Max input level

+20 dBm for no damage

Gain compression point

 

Antenna Input Frequency 1dB GPC
1 2 MHz

30 MHz

 15 dBm

15 dBm
2 31 MHz

99 MHz

 13 dBm

13 dBm
3 106 MHz

1471 MHz

 6 dBm

6 dBm
4 106 MHz

1471 MHz

 6 dBm

6 dBm

 

 

Active device third order intercept point (typical values)

Antenna Input Frequency IP2 IP3
1 2 MHz

30 MHz

 85 dBm

86 dBm

 49 dBm

50 dBm
2 31 MHz

99 MHz

 64 dBm

85 dBm

 45 dBm

45 dBm
3 106 MHz

1471 MHz

 53 dBm

56 dBm

 31 dBm

32 dBm
4 106 MHz

1471 MHz

 53 dBm

56 dBm

 31 dBm

32 dBm

 

Dynamic range (typical values)

 

Antenna Input Frequency Dynamic range
1 2 MHz

30 MHz

 111 dB

112 dB
2 31 MHz

99 MHz

 107 dB

107 dB
3 106 MHz

1471 MHz

 97 dB

97 dB
4 106 MHz

1471 MHz

 97 dB

97 dB

 

 

Output-to-output isolation
(typical values)

 

Frequency Isolation
20 MHz 87 dB
100 MHz 75 dB
400 MHz 67 dB
1490 MHz 65 dB

 

 Input-to-output isolation
(typical values)

 

Frequency Isolation
20 MHz 60dB
100 MHz 46 dB
400 MHz 37 dB
1490 MHz 35 dB

 

 

Power : 120/240 VAC, selectable

Dimensions : Width: 19" rack
Height: 3RU (5.25" = 133 mm)
Depth: 14.4"(365 mm)
 

Weight :19.5 lb (8.8 kg)

Specifications are subject to change without notice.