This little trek started when I found an old weather sensor in a drawer. These come with weather stations to show what the temperature is remotely (or wind speed, humidity or rainfall).
The specific FCC ID for my sensor is RNERF100MTX, sold by Chaney Instrument Co. under the ACURITE brand. I found a manual and learned that the device transmits in the ISM (Industrial, Scientific and Medical) band that spans 433.05 – 434.79 MHz. Weather sensors typically operate around 433.92 MHz, but the exact frequency can vary depending on the manufacturer and device.
I also learned from my research that such devices use simple off/on encoding. That’s why my original title, “Listening to the Weather,” had to be changed. I have a few devices that can receive the ISM band frequencies, but I selected an RTL-SDR dongle since there wasn’t going to be anything to listen to.
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