Three of the most common digital modulation schemes you’ll see in specifications are Frequency Shift Keying (FSK), Amplitude Shift Keying (ASK), and LoRa (Long Range). To wrap my mechanically ...
This system uses frequency-shift keying to encode data. This part is done by a ST7540 modem that’s designed for power line applications. The modem is controlled over SPI by an ATmega168 ...
it supports Phase Shift Keying and Frequency Shift Keying. Prox Plus reader is a cad plus PIN unit, used where more security than card only is required. The LED and speaker provide enhanced visual and ...