If an alien race wished to transmit a signal consisting of prime numbers far across the galaxy, it should be sufficiently advanced to realize that AM is a very inefficient mode of transmission. It would be far better to use a single carrier wave (CW) using either simple on-off keying (like Morse code), or frequency shift keying (FSK). FSK would give the transmitted signal an extra 3dB in power over simple CW.
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05/03/2025 alle ore 08:34
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