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XP

Priyom ID Spectrum image
Enigma ID XP

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Name: Polytones
Frequencies: Many
Status Inactive (replaced by XPA)
Enigma ID status Assigned
Voice N/A
Emission mode A1D (digital AM)
Location
Activity pages

No audio sample available yet

Enigma 2000 Control list description

[Russian Intel Multitone System 1+12]  
Standard Tones (Hz +-3Hz)       
[XP used as the nominal value for measurement of other Polytone systems]   
 
303, 319, 335, 351, 367, 383, 399, 
415, 431, 447, 463, 479, 495, 511 Hz.
Datum tone 303Hz
Tone/value relationships:_
303=space, 319=end, 495=start, 511=repeat, 
335=0, 351=1, 367=2, 383=3, 399=4, 
415=5, 431=6, 447=7, 463=8, 479=9.
Known counterpart stations M78?, M12
Family XP

This station was MFSK used by Russian intelligence.

Each transmission started with callup sent at 1 bd, so it was always readable even during unfavourable conditions. Message itself was sent at 8.3 bd.

Tones found out by ENIGMA group are:

Tone (Hz) Function
303 Space
319 End tone (follows 511)
335 Fig 0
351 Fig 1
367 Fig 2
383 Fig 3
399 Fig 4
415 Fig 5
431 Fig 6
447 Fig 7
463 Fig 8
479 Fig 9
495 Start tone (follows 511)
511 Repeat

Tones from ENIGMA Control List

Notes from the Conet Project booklet

XP: call (R5) and off. Null message format. ID ID ID 000
XP: call (R5) message of about 26 groups, ends. Same calling cycle as M12 family. Lowest tone indicates spaces.