Unclassified
Electrical telegraph
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Unclassified
Electrical telegraph
Early system for transmitting text over wires
epic · Q6501061
Related cards · telecommunications device
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Places
Citizens band radio
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Unclassified
Crystal radio
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Places
Identification friend or foe
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Works
Imo.im
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Places
AN/PRC-77 Portable Transceiver
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Places
AN/PRC-152
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