Decode Z-Wave with an SDR

Group

IoT & sensors

In the mode list

IoT, sub-GHz

What Z-Wave is

Z-Wave home automation (ITU-T G.9959 FSK: R1 9.6 kbit/s Manchester, R2 40 kbit/s, R3 100 kbit/s) on the sub-GHz channels of Europe, USA, Australia / New Zealand, Hong Kong, India, Russia, China, Israel, Japan and Korea: networks by home ID, nodes, command classes and commands, a frame log. Receive only: S0 and S2 encrypted payloads are shown as encrypted and never decoded. Europe fits in 2 Msps….

Frequencies and settings

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

Z-Wave home automation (ITU-T G.9959 FSK: R1 9.6 kbit/s Manchester, R2 40 kbit/s, R3 100 kbit/s) on the sub-GHz channels of Europe, USA, Australia / New Zealand, Hong Kong, India, Russia, China, Israel, Japan and Korea: networks by home ID, nodes, command classes and commands, a frame log. Receive only: S0 and S2 encrypted payloads are shown as encrypted and never decoded. Europe fits in 2 Msps centred on 869.13 MHz.

Limits and what it was checked with

Checked with generated signals and impairments; recordings of real signals welcome.

Which radio you need

This mode sits at a high frequency, so check that your radio tunes it: a HackRF covers 1 MHz to 6 GHz, and RTL-SDR stops near 1.7 GHz. Some modes at these frequencies also need a fast radio (10 to 20 Msps) or a dish and an LNB.

Receiving and the law

Questions about Z-Wave

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