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Is it necessary to use scrambling or voice encryption with hopping?

April 26, 2017encryption hopping necessary scrambling Voice

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Is it necessary to use scrambling or voice encryption with hopping?

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A. No, the 64 bit DES algorithm used to determine the hopping sequence, yields a very high degree of security. Voice encryption units or scramblers tend to degrade the speech quality so no advantage is obtained by using encryption.