Mode Wi SUN FAN

Wi-SUN FAN: smart meter and street light mesh networks, nodes and links (receive only, no decryption).

Group	IoT & sensors
Default frequency	921.5 MHz
Default sample rate	20 Msps
In the mode list	IoT, sub-GHz

Step-by-step: Tutorial-Wi-SUN-FAN

What Wi-SUN FAN is

Wi-SUN FAN is a smart utility mesh network (smart meters, street lights) on IEEE 802.15.4g FSK at 50, 100 and 150 kbit/s, with band plans for every Wi-SUN region from 470 MHz to 2.4 GHz. The nodes hop over every channel, so OnAir can look at a whole band at once (a fast radio is needed for that).

Frequencies and settings

Setting	Value
Start frequency	921.5 MHz
Tuning range of the mode table	470 to 2484 MHz
Sample rate asked	20 Msps
Lowest working rate	2 Msps
Channel width	18 MHz

OnAir takes any frequency you type; the numbers above are the mode's starting point and the range its table describes. In the app the shortcut label is IoT, sub-GHz.

What OnAir shows

Wi-SUN FAN smart utility networks (smart meters, street lights) (IEEE 802.15.4g FSK at 50, 100 and 150 kbit/s) with the band plans of every Wi-SUN region from 470 MHz to 2.4 GHz: a whole band at once (the nodes hop over every channel, all of 915 - 928 MHz at 16 Msps), networks with their name and border router, nodes with vendor, role, routing cost and schedules, links with the levels acks report, a frame log and a hop chart. Receive only: nothing is sent or joined; PAN configurations and data are encrypted and stay so. Needs 16 Msps or more for the whole band (a few channels from 2 Msps).

Tips and caveats

• Checked with generated signals and impairments; recordings of real signals welcome.
• Which radio: Usually yes for narrowband signals: an RTL-SDR tunes roughly 24 MHz to 1.7 GHz at up to about 2.4 Msps. Wide signals such as TV channels need a faster radio, and OnAir says next to the source what the selected radio can do.
• Try it without a radio: most modes include a built-in synthetic test signal, so you can open the screen and try the controls first.
• Receiving and the law: This mode is passive. It only receives, never connects, pairs or joins networks, and never decrypts payloads. Check the rules where you live. See Legal.

Related pages

• All modes, IoT & sensors
• Supported radios, Troubleshooting, FAQ
• More in IoT & sensors: ISM sensors, LoRaWAN, Meshtastic, MeshCore, Bluetooth LE, Zigbee / 802.15.4, Wi-Fi HaLow (802.11ah), ANT+ sensors, DECT cordless phones, LoRa (raw), Wi-Fi networks