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In page Frequency-hopping spread spectrum:

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Frequency-hopping ideas may have been rediscovered in the 1950s during patent searches when private companies were independently developing direct-sequence Code Division Multiple Access, a non-frequency-hopping form of spread-spectrum.[citation needed] In 1957, engineers at Sylvania Electronic Systems Division adopted a similar idea, using the recently invented transistor instead of Lamarr's and Antheil's clockwork technology.[7] In 1962, the US Navy utilized Sylvania Electronic Systems Division's work during the Cuban Missile Crisis.[10]