433MHz RF wireless modules from eBay (transmitter and receiver)

Exploring some wireless communication transmitter and receiver modules from eBay. They operate at 433.92 MHz RF frequency. Some tests, oscilloscope measurements, schematics and how do they work. Correction: dBm means decibel milliwatts, not decibel meters, but the abbreviation easily leads to confusions.

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Видео 433MHz RF wireless modules from eBay (transmitter and receiver) канала DiodeGoneWild