RF Modulation

• 433.923MHz center signal
• 2-FSK, with 26.37kHz deviation
• 40625bps data rate (before manchester)
• Manchester coded, non-ieee
• SYNCM_CARRIER_16_of_16 (16/16 sync word bits detected)
• MFMCFG1_NUM_PREAMBLE_8 (8 bytes of preamble)
• Sync word: 0x54c3
• 8-bit crc with standard/common polynomal

RF HARDWARE used to RECEIVE transmissions from PDM or Pod

For SDR capture, you can use one of the following devices, or any SDR capable of capturing 2048000 samples per second at the 433.90MHz rf range. You'll need software to demodulate this data (see below):

• rtl-sdr usb dongle
• HackRF One

For hardware based demodulation, you can use a cc111x based device like one of these:

• RFCat
• TI USB Stick
• RileyLink

SOFTWARE for capturing/decoding SDR signals

• SDR# - to capture sdr iq data
• omnipod_decode This code will extract packets of correct length from raw sdr iq data, and will verify CRCs.
• baudline will show signal characteristics

SOFTWARE for doing hardware based demodulation:

• rfcat
• omni.py - tool to explore omnipod signals with rfcat
• SmartRF Studio and an omnipod configuration for it.