The RF450 Spread Spectrum Radio is the latest addition to our line of wireless telemetry products—transmitting over distances up to 60 miles. The RF450 is a 900-megahertz, license-free radio specifically designed to work with Campbell Scientific CRBasic dataloggers (the CR800 series, CR1000, CR3000, and CR5000). The RF450 radio contains a radio module from FreeWave Technologies and a Campbell Scientific interface board.

Features

The RF450 is optimally used in a point-to-multipoint network. Traditionally, a multipoint network is used in applications where data is collected from as few as one or up to many dataloggers and reported back to one central site. The central site is typically a PC running LoggerNet, but could be a datalogger.
An RF450 in this type of network is designated as a master, where it is able to simultaneously communicate with numerous slaves. In its simplest form, a multipoint network functions with the master broadcasting its messages to all slaves. The slaves respond to the master only when given data by the datalogger.
Point-to-multipoint applications take advantage of the low power mode available in the RF450. This reduces the required power at remote sites from about 75 mA to less than 10 mA in most applications.

Specifications

Operating Frequency: 902 to 928 MHz
Type: Frequency Hopping Spread Spectrum (FHSS) Transceiver
FCC ID: KNY-6231812519
Canada: 2329B-DGR09RAS
Power Output: 5 mW to 1 W, user selectable
Transmit Range: Maximum transmission distance of 60 miles, and realistic reliable transmission distance of ~13 miles. All transmission distances assume line-of-sight and appropriate antenna; line-of-sight obstructions, RF interference, and antenna type affect transmission distance.
Modulation: GFSK, 120 or 170 kbps
Occupied Bandwidth: 230 kHz at 60 dB
Channel Spacing: 230 kHz
Hopping Patterns: 15 per band, 105 total, user selectable
Hopping Channels: 50 to 112, user selectable
Hopping Bands: 7, user selectable
Frequency Zones: 16 zones, 7 channels per zone
Receiver Sensitivity: -108 dBm for 10-6 BER; -110 dBm for 10-4 BER
Receiver Selectivity: -20 dB at Fc ±115 kHz; -60 dB at Fc ±145 kHz
System Gain: 140 dB
Error Detection: 32-bit CRC, retransmit on error
Data Encryption: Substitution, dynamic key
Link Throughput: 115.2 kbps, maximum
Data Interface Protocol: RS-232, 1200 baud to 115.2 kBaud, DCE, CS I/O, ME and SDC user selectable
Antenna Connector: Type SMA female
Input Voltage: 7 to 28 Vdc
Average Current Drain (@ 12 Vdc)
Sleep: 7 mA
Idle: 22 mA
Receiving: 76 mA
Transmitting: 500 mA

Producing Area:USA