The RF451 is a powerful 900 MHz point-to-multipoint serial radio that is well suited for wireless networking with PakBus dataloggers that are located miles apart. The RF451 is a 902 to 928 MHz frequency-hopping spread-spectrum radio. The radio features high noise immunity, fast serial data transfer speeds, and the maximum transmit power allowed by the FCC in an effort to provide reliable, hassle-free operation.
Constructing a network using RF451 radios is a simple, easy-to-do configuration process. To construct a network, connect one radio to a PC and configure it as the master radio. Then connect a second radio to a datalogger. The link can be treated as a high-speed, multi-drop serial connection.Read More
The RF451 is a frequency-hopping spread-spectrum radio, capable of operating between 902 to 928 MHz and transmitting with up to 1 Watt (30 dBm). The specific frequencies used may be selected when operating outside the US and Canada to meet local regulations. Additionally, the RF power output may be adjusted to as low as 10 mW via software.
Typical communication distances are greater than 4 miles with up to 60 miles achievable under ideal conditions. Extended communication distances are possible using repeaters.
|Radio Type||Frequency Hopping Spread Spectrum (FHSS)|
|Frequency||902 to 928 MHz|
|Power Output||10 to 1,000 mW (user-selectable)|
|Modulation||2 level GFSK|
|Data Rate||115.2 or 153.6 kbps (selectable speeds)|
|Occupied Bandwidth||142 kHz (applicable to FCC ID KNYAMM0921TT)|
|Hopping Patterns||15 per band, 105 total (user-selectable)|
|Hopping Channels||50 to 111 (user-selectable) applicable to FCC ID KNYAMM0921TT|
|IF Selectivity||40 dB (at fc ± 230 kHz)|
|Receiver Selectivity||50 dB (at 896 MHz, 935 MHz)|
|Error Detection||32-bit CRC (retransmit on error)|
|Data Encryption||proprietary spread-spectrum technology|
|Link Throughput||115.2 kbps (maximum)|
|Antenna Connector||Reverse Polarity SMA (RPSMA) jack|
|CS I/O||DB9 M, SDC 7/8/10/11 device|
|RS-232||DB9 F, DCE|
|Operating Temperature Range||-40° to +75°C|
|Relative Humidity||0 to 95% RH (non-condensing)|
|Dimensions||13.61 x 7.01 x 2.74 cm (5.36 x 2.76 x 1.08 in.)|
|Weight||0.18 kg (0.4 lb)|
|Input Voltage||7 to 28 Vdc|
|Powered Over||CS I/O or barrel plug|
|Connector||Barrel plug, center positive 12 V (used to connect the 14291 Field Power Cable or 15966 AC adapter)|
|-NOTE-||Used for connection to computer for network communications or device configuration. Does not supply enough power for normal operation; RF451 must be powered through DC barrel plug or CS I/O.|
|Type||USB standard B (device only)|
*Connects via RS-232; disable internal 900 MHz radio if using CR205, CR210, CR206(X), or CR211(X).
**To integrate the CR6 with the RF451, order the CR6-RF451 option on the CR6 product page.
*** Connects via RS-232; use a 18663 null modem cable.
‡The RF451 provides a point-to-mulitpoint link. For non-PakBus dataloggers, there is typically only one datalogger on the network, as they cannot be uniquely addressed by LoggerNet.
♣The RF451 does not support Modem Enable devices over CS I/O. An RF451 may be connected to a mixed-array datalogger (for example, CR10, CR10X) by using an SC932A or SC105 between the datalogger's CS I/O port and the RF451's RS-232 port.
The RF451 can be used in networks containing RF450 and FreeWave FGR radios. Campbell Scientific does not recommend using the RF451 next to an RF400, RF410, RF401, RF411, RF401A, RF411A, CR205, CR210, CR206(X), CR211(X), AVW206, or AVW211, as it may cause interference that will adversely affect device performance.
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 10, 8.1, 8, and 7 (Both 32 and 64 bit)