Moderate difficulty suitable for most players
Cryptic Relics of Archaic Transmission
Challenging puzzle for experienced crossword solvers
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Across
- 1. Sunlight’s Morse code reflector used before radio waves
- 4. Semaphore’s distant cousin, encoding pulses through wire
Down
- 2. Early 20th-century intercom device for encrypted verbal exchange
- 3. Victorian voice immortalizer, etching sound on wax
- 5. Visual signaling system waving flags in coded patterns
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