A crossword exploring historical and obsolete communication codes once vital for messaging around the globe.
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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