CrosswordMint
Forgotten Signals of Early Messaging
A crossword puzzle exploring archaic and obsolete communication codes once used for messaging and signaling.
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Across
  • 1. Code using dots and dashes for letters and numbers
  • 2. Message delivery system using birds
  • 4. Device sending messages by reflecting sunlight with mirrors
  • 6. Maritime system of colored flags to convey messages
  • 7. An absence of communication or an obsolete code meaning no message
  • 10. Primitive signaling method using visible puffs
Down
  • 3. Bird used historically to carry messages quickly
  • 5. Early long-distance communication tool using coded pulses
  • 8. Visual signaling system using flags or arms
  • 9. Old alphabet sometimes used in coded messages
  • 11. Rearranged letters sometimes used to hide messages

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