Using the formula for finding the frequency shift between mark and space, The frequency shift is 135.4165 kHz. B. the transmitted frequencies if the carrier (center) frequency is exactly 880 MHz The ...

Those who were around for the pre-floppy days of computer mass storage were likely to have made the mistake of slipping a cassette tape containing data into a stereo tape deck. Instead of hearing the ...

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This proof-of-concept is just waiting for you to put it to good use. [Mike Tsao] wrote an Arduino sketch that lets him decode incoming audio data which could be used to program the device. He’s ...