RF450

900 MHz 1 W Spread-Spectrum Radio
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RF450

End of life

900 MHz 1 W Spread-Spectrum Radio

Model:
RF450
Item Number:
18326
Warranty:
1 year
Lead time:
7 days

Overview

RF450 900MHz 1W Spread Spectrum Radio (-40 to +75C)

The RF450 is a frequency-hopping, spread-spectrum radio that operates within the 902 to 928 MHz license-free band. This 1 W radio provides a solution for wireless network communications over longer distances (13 to 60 miles, depending on antenna and line-of sight). Designed specifically for our PakBus® data loggers, the RF450 works particularly well in point-to-multipoint PakBus networks.

Technical Description

The RF450 consists of a radio module manufactured by FreeWave Technologies and a Campbell Scientific interface board. It reduces susceptibility to RF interference from other spread spectrum devices by providing user-selectable frequency hopping patterns.

Spread spectrum radios spread the normally narrowband information signal over a relatively wide band of frequencies. This process allows communications to be more immune to noise and interference from RF sources such as pagers and cellular phones.

Benefits

  • Individual FCC license not required
  • Maximum transmission distance of 60 miles, and realistic reliable transmission distance of approximately 13 miles
  • Low current drain
  • Wide operating temperature range
  • High data transfer speeds
  • High noise immunity—superior performance in noise congested environments
  • Error Free Communications—32 bit Cyclical Redundancy Checking (CRC) with automatic retransmission
  • Ability to have stand-alone RF router/repeaters (up to 8 repeaters)
  • Real time remote diagnostics and setup, transparent to network communications

Specifications

Operating Frequency
902 to 928 MHz
Radio Type
Frequency Hopping Spread Spectrum (FHSS) Transceiver
FCC ID
Canada ID
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
120 or 170 kbps

(GFSK)

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

(7 channels per zone)

Receiver Sensitivity
-108 dBm

(for 10-6 BER)

Receiver Sensitivity
-110 dBm

(for 10-4 BER)

Receiver Selectivity
-20 dB

(at Fc ±115 kHz;)

Receiver Selectivity
-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
CS I/O, RS-232, DCE, ME and SDC

(user selectable)

RS-232 Baud Rate
1200, 4800, 9600, 19.2k, 34.4k, 57.6k, or 115.2k bps

(user selectable)

RS-232 Connector
9-pin D socket (female)

(4 wire: Tx, Rx, CTS, GND)

CS I/O Connector
9-pin D pin (male)

(Newer data loggers provide power to the radio on the CS I/O connector; data loggers purchased before December 1997 require the #14291 Field Power Cable.)

Antenna Connector
Type SMA socket (female)
Power Connector
Barrel plug, center positive 12 V

(used to connect the 14291 Field Power Cable or 15966 AC adapter)

Input Voltage
7 to 28 Vdc
Operating Temperature Range
-40° to +75°C
Relative Humidity
0 to 95% RH

(non-condensing)

Dimensions
3.66 x 8.05 x 14.48 cm

(1.44 x 3.17 x 5.7 in.) without mounting plate

Dimensions
3.66 x 8.05 x 19.05 cm

(1.44 x 3.17 x 7.5 in.) with mounting plate

Weight
0.3 kg

(0.7 lb)

Average Current Drain @ 12 Vdc

Sleep
7 mA
Idle
22 mA
Receiving
76 mA
Transmitting
500 mA

Related Resources

Connect With Us

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Phone Numbers
General: (435) 227-9000
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Corporate Address
815 W 1800 N
Logan, UT 84321
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Email Address
sales@campbellsci.com

As a trusted leader in measurement systems for more than 50 years, our top priority at Campbell Scientific has always been to provide the most accurate, reliable data for research and industry.