Help setting rtl_433 to detect water wmbus signals.

[alvaromemo]

Thank you in advance.

I get a usb dongle to capture T1 datagrams, from water meters transmitting at 434.475Mhz.

Using a SDR software, i can see some data on that frecuency, but using

rtl_433 -f 433.475M -vvv

It shows nothing. Can you help?

[zuckschwerdt]

Wireless M-Bus, Mode C&T, 100kbps has a minimum samplerate of 1.2 MHz (12 samples of 100kb/s). Try -s 1200k

[alvaromemo]

Thank you. It works!.

Any other recommendation to get more telegrams?. Maybe using some parameters regarding Gain.

[zuckschwerdt]

For gain the usual -Y autolevel and to keep an eye on levels -M level -M noise is recommended.

[alvaromemo]

Perfect.