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.Read More
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.
|Operating Frequency||902 to 928 MHz|
|Radio Type||Frequency Hopping Spread Spectrum (FHSS) Transceiver|
|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)|
|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 Female (4 wire: Tx, Rx, CTS, GND)|
|CS I/O Connector||9-pin D 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 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)|
|Weight||0.3 kg (0.7 lb)|
Average Current Drain @ 12 Vdc
Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
|CR200X (retired)||The internal radio of the CR200X-series dataloggers should not be used with the RF450.|
|CR206X (retired)||The internal radio of the CR200X-series dataloggers should not be used with the RF450.|
|CR211X (retired)||The internal radio of the CR200X-series dataloggers should not be used with the RF450.|
|CR216X (retired)||The internal radio of the CR200X-series dataloggers should not be used with the RF450.|
|CR295X (retired)||The internal radio of the CR200X-series dataloggers should not be used with the RF450.|
|CR5000 (retired)||The RF450 does not support a connection with more than one CR5000 or CR9000X datalogger, because the host RF450 radio does not support slave switchable addressing and our CR5000 and CR9000X dataloggers do not have PakBus routing protocol.|
|CR9000X (retired)||The RF450 does not support a connection with more than one CR5000 or CR9000X datalogger, because the host RF450 radio does not support slave switchable addressing and our CR5000 and CR9000X dataloggers do not have PakBus routing protocol.
Although the CR9000X is compatible, the RF450 does not support its fastest communication rates, and therefore may not be practical for many CR9000X applications.
The RF450 can be used in networks containing FGR-115 radios. Campbell Scientific does not recommend using the RF450 with our RF401-series radios or RF430-series radios.
A desiccated, non-condensing environment is required. The RF450 includes built-in keyhole flanges for mounting to the backplate of a Campbell Scientific enclosure.
Current RF450 firmware. The Device Configuration Utility is used to update the firmware in the RF450.
A software utility used to download operating systems and set up Campbell Scientific hardware. Also will update PakBus Graph and the Network Planner if they have been installed previously by another Campbell Scientific software package.
Supported Operating Systems:
Windows 11, 10, 8.1, 8, and 7 (Both 32 and 64 bit)
Number of FAQs related to RF450: 6
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There are many cavity- and notch-type filters available from third-party manufacturers.
Any RS-232 transmission will work with the RF450.
No. They do not use the same over-the-air communications protocol. In fact, unless extra steps are taken, the two models will cause interference with each other.
Yes. This type of connection is called a PakBus network. The intermediate CR1000 needs to be enabled as a router, and a suitable telemetry link needs to exist between the two CR1000 dataloggers.
Antenna selection depends on multiple criteria:
To help with antenna selection and site placement, consider renting and using a demo kit to test the pathway quality. Campbell Scientific offers a 900 MHz demo kit for the RF401, RF430, CR206X, and AVW206, as well as a demo kit for the RF450. Contact Campbell Scientific for assistance.