M07
| Enigma ID | M07 |
| Name | |
| Frequencies | Same as M10 |
| Status | Inactive |
| Voice | N/A |
| Emission mode | MCW |
| Location |
Czechoslovakia
|
| Activity pages |
M07 was run by the Czech military intelligence. Last heard on 8 November 2001.[1]
M07 transmission began and ended with a sequence of tones resembling Morse characters for one minute. Between them:
| Preamble | Message | Outro | ||||||
|---|---|---|---|---|---|---|---|---|
| 630 | 88 | 26 | = = | 65389 65389 40754 40754 ... | = = | 88 | 26 | 0 0 0 |
| 3-figure recipient ID | 2-figure number, purpose unknown | Group count | 5-figure paired groups | 2-figure number, purpose unknown | Group count | |||
| Repeated thrice | Repeated twice | Repeated twice | Repeated twice | Repeated twice | ||||
The preamble and the outro were sent at 15 WPM, whereas the message groups were 20 WPM. Zero was sent as T - a single dash.
The format was similar to M10, and also the same frequencies were used, but M07 always carried only one message. M07 could have started at any 10-minute interval within an hour. Sometimes M10 messages were sent on M07 with the same headers.
M07's old intro and outro were reported to be rapid dashes, rather than dot/dash sequences.
References
- ENIGMA 2000 Newsletter #8 (January 2002) [accessed October 4th, 2014]