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Campbell Scientific

RF411A 922 MHz Spread-Spectrum Radio

ClimateCommunications

The RF411A is a 900 MHz radio designed for license-free use in several countries, including Australia and New Zealand. It provides a hassle-free way to create long-distance wireless links between your computer, data loggers, and measurement devices. The RF411A has a 920 to 928 MHz operating-frequency range and a configurable transmit-power output of 5 to 250 mW.

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Overview

The RF411A is a 900 MHz radio designed for license-free use in several countries, including Australia and New Zealand.
It provides a hassle-free way to create long-distance wireless links between your computer, data loggers, and measurement devices.
The RF411A has a 920 to 928 MHz operating-frequency range and a configurable transmit-power output of 5 to 250 mW.
The RF411A is compatible with all of its RF400-series radio predecessors, including the RF410, RF411, and RF431.
This also means that it is compatible with the CR210, CR211(X), and AVW211.
Note: The RF411A radios are recommended for existing installations that require compatibility with products such as the RF411, CR211, and AVW211. For new installations, Campbell Scientific recommends using the RF412 or RF451.

Specification

Radio Type	Frequency Hopping Spread Spectrum (FHSS)
Frequency	920 to 928 MHz
Country Used In	Australia, New Zealand
Transmission Distance	-Note- Transmission distance assumes line-of-sight and appropriate antenna. Line-of-sight obstructions, RF interference, and antenna type will affect transmission distance. Up to 1.61 km (1 mi) with omnidirectional antenna; up to 16.09 km (10 mi) with higher-gain directional antennas at ideal conditions
Power Output	5 to 250 mW (software-selectable)
Receiver Sensitivity	-109 dBm (Campbell Scientific protocols will issue retries wherever a bit error occurs.)
Channel Capacity	7 hop sequences share 25 frequencies.
RF Throughput Data Rate	9.6 kbps
Data Rate	10 kbps
Antenna Connector	Reverse Polarity SMA (RPSMA) jack
LEDs	Power on, Tx, Rx, diagnostics
RS-232 Baud Rate	1200 to 115200 bps
CS I/O Modes	SDC 7, 8, 10, 11, and ME master
Average Current Drain	Transmit: < 80 mA (250 mW TX power) Receive: 15 mA Stand-by: < 0.5 mA (depending on power saving mode)
Power	9 to 16 Vdc
Power Connector	2.5 mm DC power jack
Operating Temperature Range	-25° to +50°C (standard) -40° to +85°C (extended)
Communication Ports	RS-232 9 pin D female CS I/O 9 pin D male USB Type B jack
Service Requirements	Shares frequency with other devices. Must not cause harmful interference to licensed radios. Requires line-of-sight.