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See, for related technique http://en.wikipedia.org/wiki/Hedy_Lamarr in the section of spread spectrum.
IIRC, music-like spread spectrum was used by the German armies on the drive to Leningrad. There this may be in the book version of "Enemy at the Gates". It was used drive the radio link for the remote teletype system.
| This article has not yet been rated on Wikipedia's content assessment scale. |
See, for related technique http://en.wikipedia.org/wiki/Hedy_Lamarr in the section of spread spectrum.
IIRC, music-like spread spectrum was used by the German armies on the drive to Leningrad. There this may be in the book version of "Enemy at the Gates". It was used drive the radio link for the remote teletype system.