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It's not. Combine a loud emergency whistle with Morse Code, and you have the ability to signal without any electric power over much longer distances than voice.
by SiVal 3y ago
It's not. Combine a loud emergency whistle with Morse Code, and you have the ability to signal without any electric power over much longer distances than voice.
- julian_t 3y agoFor years the only Morse I knew was how to use a whistle to send SOS. Maybe it's time to learn a few more letters...