RF451 900 MHz 1 W Spread-Spectrum Radio
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.
- The RF451 is a powerful 900 MHz point-to-multipoint serial radio that is well suited for wireless networking with PakBus data loggers 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 data logger. The link can be treated as a high-speed, multi-drop serial connection.
- Does not require individual operational license in several regions around the world
- Long-distance, high-speed, serial communication with battery-operated stations
- Each radio capable of performing master, remote, or repeater role
- Remote diagnostics and setup possible with diagnostics cable and software
- Compatible with existing RF450 and FreeWave FGR radio networks
Radio Type | Frequency Hopping Spread Spectrum (FHSS) |
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Frequency | 902 to 928 MHz |
Country Used In | US, Canada, Australia |
Power Output | 10 to 1,000 mW (user-selectable) |
Transmission Distance |
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Modulation | 2 level GFSK |
RF 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 |
Frequency Zones | 16 |
Receiver Sensitivity |
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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) |
RF Connector | Reverse Polarity SMA (RPSMA) jack (external antenna required) |
CS I/O | DB9 M, SDC 7/8/10/11 device |
RS-232 | DB9 F, DCE |
Operating Temperature Range | -40° to +85°C |
Relative Humidity | 0 to 95% RH (non-condensing) |
Compliance Information |
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Average Current Drain (@ 12 Vdc) |
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Communication Ports |
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Service Requirements | Shares frequency with other devices. Must not cause harmful interference to licensed radios. Requires line-of-sight. |
Dimensions | 13.61 x 2.74 x 7.01 cm (5.36 x 1.08 x 2.76 in.) |
Weight | 0.18 kg (0.4 lb) |