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E06

Enigma ID E06

Spectrum image e06 spectr

Name English Man
Frequencies Various
Status Active
Voice Male, automated, with Russian accent
Emission mode USB + carrier
Location Russia
Activity pages

Download audio sample

Known counterpart stations E17, G06, S06, V06, V23, M14, M24

E06 is ran by the Russian Main Intelligence Directorate (GRU).

Null format: (rarely heard)

376 376 376 00000
3-figure transmission ID  
Repeated for 4 minutes

Traffic format:

Intro Preamble Message Outro
460 597 123 33038 33038 71495 71495 71036 71036 ... 08047 08047 597 123 00000
3-figure transmission ID 3-figure group, purpose unknown Amount of 5-figure groups in the message 5-figure paired groups 3-figure group, purpose unknown Amount of 5-figure groups in the message  
Repeated for 4 minutes Repeated twice Repeated twice   Repeated twice Repeated twice  

If more than one message is to be transmitted, then instead of "00000", the transmission ID is spoken again for one minute, then the standard message procedure follows for the next message.

E06 has two rare variants: E06a, referring to 2-group messages commencing with "11111", and E06b, referring to additional 5-figure group in the preamble.

Operation habits

E06 is mostly heard unscheduled, but there are a few regular transmissions. The formats of the schedules are highly varied:

  • Different frequency every month, different ID every month, adjusts to summer time, repeats an hour later on a different frequency, and also 24 hours later at the same times and on the same frequencies, same message repeated entire month
  • Different frequency every month, same ID every month, adjusts to summer time, repeats an hour later on a different frequency, and also 24 hours later at the same times and on the same frequencies, each week means a different message
  • Seasonal frequency changes, same ID every month but changes yearly, does not adjust to summer time, repeats an hour later, then repeats a few days later at different times and on different frequencies
  • No frequency changes, same ID every month, repeats a few hours later on a different frequency, does not repeat on a different day, each week means a different message

Most of the transmissions are preceded 5 to 20 minutes prior to the start by a long test tone, followed by the E06 voice giving the ID of the upcoming transmission once. Afterwards the carrier is either switched off, or kept silent up until the broadcast begins. The transmissions can occur at any 5-minute interval within an hour, but full and half hours are preferred. One schedule exists - 2nd Wednesday 19:20/20:20 UTC + following Sunday 11:20/12:20 UTC - where the test is performed an hour before the transmission with repeated "01234".

The entire transmission process is handled using a computer running Windows 7, as evidenced by leaked sound effects. Prior to April 2014, Windows XP was used instead.

The E06 message groups themselves don't exhibit any non-randomness, except in training messages. The second 3-figure group in the header never uses digits from the transmission ID, except in invalid messages.

Training schedules

Two schedules, on first and third Thursday at 20:30 UTC, and the Fridays following the first and third Thursday at 21:30 UTC, are handled differently to the normal transmissions. The messages are non-random, the message length is fixed at 20 groups, and the messages are repeated for many months. While the transmissions use the same software as the regular transmissions for producing the numbers, the transmissions are started up manually, frequently late. All of these behaviors together suggest a training nature of these broadcasts.

Up until November 2013, the training messages were 15 groups long. This change was also made on the training schedules of E06's sister stations.

Up until April 2014, even the numbers being spoken were produced manually, presumably by an operator at a keyboard, as indicated by highly inconsistent tempo. The zeroes ending the transmissions were always noticeably spaced.

History

It is unknown when E06 was first noted, but it was going strong by the 1970s. Its operation habits, besides equipment upgrades, have not changed since then.

Many different voices have been used throughout E06's existence, sometimes only lasting a few days. The current one is in use since February 2001, but dates back to at least 1992, and was previously used by E07.

While initially reported using the full AM mode with two sidebands (A3E), E06 changed to the current USB + carrier mode (H3E) some time in late 1990s. On 11 June 2014 and 18/19 September 2014, E06 was noted sending in pure USB mode without carrier (J3E).

Notes from the Conet Project booklet

voice 2: 821 (R5) * 704 704 42 42 = (42 pairs) 60083 53821 53933 .....23301 62657 31341 30833 14423 94069
88315 7630530346 63164 22476 13677 41846 36111 .... 10496 * 704 704 42 42 00000
voice 1: 341 (R5) * 269 269 37 37 = (37 pairs) 19881..... ending as E6 voice 2
voice 3: pairs .....95978 03685 20719 16727.... format as E6 voice 1
null message format (voice 2): 897 897 897 00000 (R5)

English Man
Russian Intelligence. R 12/03/92

Tcp d2 17 english man irdial by The Conet Project

English Man
Russian Intelligence. Different voice. R 12/08/93

Tcp d2 23 english man irdial by The Conet Project

English Man Version 1
See Enigma signal list.

Tcp d3 05 english man version 1 irdial by The Conet Project

English Man Version 3
Note the 'zeeero'.

Tcp d3 06 english man version 3 irdial by The Conet Project