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X06

Enigma ID X06

Spectrum image X06

Name
Frequencies
Status Active
Voice N/A
Emission mode USB + carrier; 6-tone MFSK
Location Moscow, Russia
Activity pages

Download audio sample

Known counterpart stations

X06[a] is a proprietary selective calling system, used exclusively by the Russian diplomatic service.

Waveform

The signal consists of a sequence of 6 tones in succession, 333⅓ ms long each, followed by a ~1320 ms pause, repeated over and over. The tones are assigned to the following audio frequencies in hertz: (±5 Hz)

1 2 3 4 5 6
815 845 875 910 950 990

Operation

X06 broadcasts are made exclusively by MFA Moscow. Each tone sequence uniquely identifies a single Russian diplomatic mission, and has its own pool of frequencies on which it may be broadcast; only one frequency is used at a time.

While X06 is being broadcast, Moscow is waiting for the target to initiate a point-to-point link using Perelivt on any of its frequencies; in case no such attempt is received, the X06 broadcast may be moved to a different frequency from the pool.

There are 54 tone sequences corresponding to diplomatic missions:

Sequence Target Daytime frequencies Nighttime frequencies
124356 Embassy Dushanbe 10422, 13965  
125643 Embassy Ulaanbaatar 11081, 13524, 14615, 15989, 19875  
134265 Embassy Tunis 12134, 13985, 16116, 18245  
145632 Embassy Algiers 13410, 14414, 15810 6866, 8169, 9163, 10114
153624 Embassy Damascus 12133, 13843, 14550, 16153  
154263 Embassy Rome 11085, 12149, 13401, 14358, 15687  
156234   11525, 13940, 14871, 17475, 20690 5772, 7635, 9235
162543 Embassy Nicosia 10508, 12219, 13448, 14447, 15973  
164253 Embassy Addis Ababa 12120, 13924, 14655, 18177, 20334 7862, 9128
164532 Embassy Dublin 10293, 11411, 13506, 16223 6962, 7527, 8131, 9163
165324 Embassy Vienna 10161, 11638, 12122, 13452 6960, 7411, 8078
165423 Embassy Brussels 9450, 11462, 12157, 13411, 15836 8005
213546 Embassy Islamabad 10283, 11438, 12168, 13954, 14425 5412
214356 Embassy Amman 12186, 14501, 17430, 18346 8180, 9253
215346 Consulate General Mumbai 12207, 13979, 14650, 16115 7560, 9076, 10202
216354 Consulate General Chennai 11125, 12091, 13961, 14970, 17470, 20813 9351
216435 Embassy Dhaka 11095, 13510, 15920, 19610  
231654 Embassy Abuja 15676, 16103, 17506 9174, 11467
241563 Consulate General Karachi 14720, 16320 6850, 7680, 8180, 10815
246531 Embassy Accra 14812, 17421, 18206, 20336 9386
256134 Embassy Abidjan 12055, 15828, 17463, 19611, 20605 7833
256341 Embassy Beirut 10145, 10684, 12150, 13838, 14405, 15819  
261453 Embassy Cairo 11136, 13530, 14865, 15710, 16060  
263145 Embassy Prague 10214, 11561, 13441, 14812 6948, 7961, 9127
314265 Embassy Antananarivo 12195, 16276, 17517, 19511, 21825 7740, 8105, 10731
324615 Embassy Madrid 11030, 12094, 14570, 16219 10380
325614 Embassy Nairobi 14942, 16188, 17454, 18523, 20655 11472, 12118
351264 Embassy Abu Dhabi 12060, 14934, 14947, 17534, 18060, 19858 5932, 7691, 10255, 11010
352416 Embassy Dar es Salaam 12089, 13951, 14950, 16132, 18575, 19405  
356412 Embassy Berlin 9288, 10653, 12177 4912, 7604
361245 Embassy Copenhagen 9158, 12215, 14501 4542, 6986
362154 Embassy Athens 10815, 12138, 13465, 14631, 17445 8062
364152 Embassy New Delhi 11492, 12177, 13467, 14683, 15656 9162
412356 Embassy Budapest 9061, 10814, 11483, 13369  
421635 Embassy Oslo 7426, 10127, 11424, 11537, 13423  
431625 Embassy Warsaw 9923, 10372, 12109 6893
432516 Embassy Bern 10453, 11562, 12152, 14377 5760, 7823
435621   12066, 15651, 17444, 18591, 20950 8147
436512 Embassy Harare 11413, 15866, 16277, 17468 10196
452163 Embassy Kabul 10181, 12130, 13481, 14595 6818, 8041
463125 Embassy Rabat 12224, 13517, 16117, 18060 6870, 7820, 8123, 9105
465132 Embassy Sofia 10172, 11153, 13419 7516
521634 Embassy Bucharest 12126, 13854, 14419, 16324 5775
532614 Embassy Paris 10270, 11438, 12199, 13395, 14392 4975, 8081, 9160
534216 Embassy Baghdad 10767, 11545, 13420  
542136 Embassy Beijing 12107, 13439, 14861, 16257, 17523 8175
561243 Embassy Helsinki 7988, 9065, 9388  
564213 Consulate General Bonn 10475, 11447, 12158, 13338, 14442 5815, 7545
612534 Embassy Ashgabat 12100, 13510, 14675, 16317, 17520 5818, 6884, 7975, 9253
615243 Permanent Mission Geneva 12213, 13575, 14863  
621543 Embassy Lisbon 11126, 12167, 14944, 15878, 18660 6938, 7870
625413 Embassy Tel Aviv 12194, 13547, 14824  
641523 Embassy Lusaka 14825, 17511, 18750, 20675 7532
645321 Consulate General Ho Chi Minh City 12178, 16103, 18197, 20837 5785, 6877, 7773, 9041, 10957

Other uses

X06 is sometimes used to emit test sequences like 123456, 111666, 121212, or 111111. Notably, such sequences are emitted about an hour before the Moscow-based E07, M12, XPA, XPA2, and XPB schedules, successively broadcasting on each frequency that will be used in ascending order (regardless of the order used on the schedule).

Notes

  1. X06 is the ENIGMA ID. Western sources often use the name Mazielka, which is a made up word invented in the 1980s by one of the Western military forces. The actual name of the system is unknown.