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Ancient and Obscure Communication Devices is a easy crossword puzzle with 20 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.

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Ancient and Obscure Communication Devices
A crossword exploring rare and unusual instruments used throughout history for communication.
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Across
  • 1. Beating pattern used for communication over distances
  • 2. Uncommon term sometimes linked with messenger devices (trick clue)
  • 3. Sound instrument used in remote or natural settings
  • 8. A system to encrypt messages
  • 9. Characteristic used in messenger pigeons and devices
  • 12. System involving compressed air tubes for message delivery
  • 15. Ancient sound signaling instrument
  • 17. Rare conveyance method for messages via air
Down
  • 4. Signal method using visible puffs for communication
  • 5. Beaded belts used by Native Americans for communication
  • 6. Incan knotted cords used for recording messages
  • 7. Ancient alphabet often used for carved messages
  • 10. Rare long-distance communication by water
  • 11. Device using sunlight reflections for signaling
  • 13. Visual signaling system using flags or lights
  • 14. Early electric communication device transmitting coded signals
  • 16. Book used to encode or decode messages
  • 18. Instrument used by some cultures to send long-distance coded sounds
  • 19. Bird used historically as a message carrier
  • 20. Hidden passage sometimes used for secret message transport
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