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Voice Scrambling Systems
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¾ Difference between rolling and non-rolling types
The rolling type (in fact, hopping type is used for the UT-110) is an additional feature which provides higher
communication security. It changes the divided frequency over a specified period.
Voice scrambling methods
The built-in inversion type voice scrambler provides secure conversation. When a more secure system is required, the
32 code non-rolling-type voice scrambler UT-109R and 1020 code rolling type UT-110R are available as an option.
¾ Built-in inversion type voice scrambler
This is the scrambling system which is built-in inversion type voice scrambler inverts the high and low audio
frequencies.
Rolling Type (UT-110R)
300Hz 3kHz
Level
Frequency
Dividing Frequency is changed
over specified period
Dividing Frequency
Low High
Non-Rolling Type (UT-109R)
300Hz 3kHz
Level
Frequency
Dividing Frequency is fixed
with programming
Dividing Frequency
Low High
Original AF
300Hz 3kHz
Level
Frequency
Dividing
300Hz 3kHz
Level
Frequency
Dividing Frequency
Inverting
300Hz 3kHz
Level
Frequency
Dividing Frequency
¾ Variable Split and Frequency Inversion
This is the scrambling system employed in the UT-109R and UT-110R. The audio frequency band is divided at a
specified frequency (divided frequency) and high and low audio frequencies in each band are inverted. The divided
frequency is programmable with cloning.
Original AF
300Hz 3kHz
Level
Frequency
Inverted AF
300Hz 3kHz
Level
Frequency
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