NB-Fi transceiver

Low Power Ultra Long Range Transceiver
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Exceptional receiver sensitivity down to -148 dBm
Built-in Forward Error Correction
Low Power Consumption
860-925 MHz & 430-500 MHz frequency ranges
NB-Fi MAC Layer compatible
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Part number
DBPSK modulation
Built-in Forward Error Correction
NB⁠-Fi MAC Layer compatible
Data rates
50, 100, 400, 3200, 25600 bps
Receiver sensitivity
-148 dBm @ 50 bps
-145 dBm @ 100 bps
-139 dBm @ 400 bps
-130 dBm @ 3200 bps
-121 dBm @ 25600 bps
Adjacent channel suppression
80 dB
DBPSK modulation
with Frequency Hopping support
Data rates
Up to 100 kbps using digital
pin-controlled phase modulator
Up to 25 600 bps for short
DBPSK messages (288 & 320 bits)
using built-in IQ modulator
Frequency generation
860 MHz - 925 MHz;
430 MHz - 500 MHz
RF Carrier Frequency
Programmable with < 10 Hz step
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
17 mA @ Low⁠-⁠current LNA mode
23 mA @ Low⁠-⁠NF LNA mode
Current - Transmitting
20 mA @ 8 dBm; 50 mA @ 15 dBm
Operating Temperature
-40°C ~ +85°C
Device Package
32-QFN (5×5)
Tape & Reel
The NB-Fi transceiver is a high-performance low power RF transceiver intended for RF wireless applications in the sub-1 GHz band.

The NB-Fi transceiver supports high performance NB Fi protocol with data rates of 50 - 25 600 bit/s with exceptional receiving sensitivity down to -148 dBm.

Besides transmitting of any DBPSK/BPSK modulated messages at data rates of up to 100 kbps using digital pin-controlled phase modulator, the NB-Fi transceiver supports sending of short (up to 320 bits) DBPSK messages at data rates of up to 25 600 bps using built-in IQ modulator. Thus, the NB-Fi transceiver allowing to transmit the NB-Fi messages, specified by the NB-Fi protocol, with enabled built-in IQ modulator. Using of the built-in IQ modulator allows to reduce MCU power consumption by transitioning it to the inactive state right after pushing the message to the transceiver’s RAM input stack.

The NB-Fi transceiver has exceptionally high sensitivity and enables developers of IoT devices to use all advantages of the NB-Fi technology simultaneously: long range of bidirectional data transmission, high selectivity and low power consumption. Together with WAVIoT base stations, the NB-Fi transceiver allows achieving the best link budget among other IoT solutions. The NB-Fi communications protocol and the WAVIoT system provide the protection of confidentiality and integrity of transmitted data by strong encryption algorithms.

NB-Fi technology enables transmission distance of up to 10 km in dense urban environment, and up to 30 km in rural area, ensuring minimum power consumption and high resistance to interference. One of the advantages of the new NB-Fi transceiver is chip-to-chip connectivity over a long distance (up to 10 kilometers). This allows building decentralized IoT solutions and mesh networks.

The NB-Fi transceiver operates in the 430 - 500 MHz and 860 - 925 MHz frequency ranges.
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IoT Solutions

Wireless solutions by WAVIoT are based on the NB-Fi technology that supports secure bidirectional communication for the Internet of Things (IoT), machine-to-machine (M2M), Smart Grid, Smart Utilities, Smart City and industrial applications.

WAVIoT base stations and NB-Fi Transceivers with best-in-class receiver sensitivity enable the use of all advantages of the NB-Fi technology at the same time: long range of bidirectional data transmission, low power consumption and high scalability and stability of IoT networks.

NB-Fi base stations and devices allow fast deployment of IoT applications and provide the protection of confidentiality and integrity of transmitted data by strong encryption algorithms.

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If you are interested in NB-Fi technology, want to know about IoT solutions for your business or have any other questions about business opportunities and products – please contact us.

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