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Redwing Digital Cellular Modem

1. Introduction

The Redwing is a full-duplex modem, manufactured by AirLink. It supports

telecommunications via a cellular digital packet data (CDPD) network. CDPD

modems are IP based, requiring an internet address assigned by your service

provider.

A PC with Internet access runs LoggerNet or PC208W software to retrieve

data. There must be a CDPD network with coverage at the datalogger site. A

coverage map is provided at www.attwireless.com/business/data.

Features

• 19.2 kbps data transfer rate

• No dialing delays

• Long distance fees eliminated

• Pay for data throughput instead of air time

• Lower operating costs and initial equipment investment

• Built-in encryption that maintains security of data while transmitting

• Typical current drain of 60 mA standby or receiving and 280 mA during

transmission

• -30° to +70°C operating temperature range

2. Specifications

Transmit Power: 600 mW

Transmit: 824 to 849 MHz

Receive: 869 to 894 MHz

Data Rate: 19.2 kbps via TCP/IP, 1,200 to 38,400 bps

via serial interface

Input Voltage: 9 to 30 Vdc

Input Current: 30 to 450 mA

Typical Current Drain at 12 Vdc: 60 mA while receiving, 280 mA during

transmission

Operating Temperature Range: -30° to 70°C with transmissions limited to

a 10% duty cycle above 60°C

Humidity: 5% to 95% non-condensing

RF Protocol: CDPD 1.1

Serial Interface: RS-232, DB-9F

RF Antenna Connector: 50 Ohm TNC female

Serial Protocols: AT Commands, SLIP, PPP

Status LEDs: Power, Channel Acquired, Link Status,

Network Registration, RSSI,

Transmit/Receive, Block Errors

Dimensions: 3"W x 1"D x 5.1"L (5.8" w/ connector),

7.6 x 2.5 x 13 cm (14.7 cm w/connector)

Weight: <1 lb. (<0.5 kg)

This manual is a supplement to the AirLink Redwing CDPD Modem User’s

Manual that is also shipped with the modem. The AirLink manual describes the

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