How did the harmonic telegraph attempt to separate distinct signals on a single line?
Answer
By using different musical pitches generated by tuning forks
The theory behind the harmonic telegraph relied on controlling the frequency of electrical vibrations. By using tuning forks to generate specific musical tones, the operator could encode different messages into those distinct pitches. The receiver would then theoretically separate these signals based on their frequency, allowing several conversations to happen simultaneously on the same electrical circuit.
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