Some specific features of the transmission courses

1. The source A

The source appears in the air in the beginning of an hour or half an hour. A message starts with 3-minute tuning: repeated pronouncing an appropriate 3-letter combination (those revealed are: EZI, ULX, PCD, YHF). Afterwards with the beginning of 4th minute the following is pronounced: „message“ (repeated twice), „group three five“ (if the group 3.5 is being transmitted) (repeated twice), „text“ (repeated twice), afterwards a text of the message follows. After finishing transmission of the whole text: „end of message, repeat“ (repeated twice), afterwards the whole procedure repeats. With finishing the repeated transmission: „end of message, end of transmission“. Afterwards in 25-30 sec the carrying frequency is switched off.

Thus, the message is repeated in the whole body, not by each combination separately. Duration of each transmission course is limited by half an hour. If the message is quite long its repeated transmission is aborted 3-5 minutes before the end of the half an hour. Tempo of transmission slightly varies depending on the length of the message: the shorter ones are pronounced slower, and vice versa.

Only the first letters of each of the special key/code words (which are actually pronounced in the air) are meaningful. The key words are pronounced in the French way — with the stress on the last syllable. A list of the key words is enclosed. One can hardly recognize any intonation accent within each of the 5-word combinations. Only the first and the last word of each combination is intonation stressed: up and down correspondingly. Interval between the words in each combination is not fixed the same, and slightly varies depending on a specifics of pronunciation of each word. The interval between the combinations is noticeably longer (in about 1.5 times) than the in-combination one.

Sometimes it is difficult for the Russian ear to differ: OSKAR - ALFA, ALFA - PAPA, ALFA - DELTA, WHISKY - YANKEE, VICTOR - UNIFORM. Besides DELTA is always heard like BERTA.

The number of a group equals to the number of 5-letter combinations in the message.

1.1. The list of the code/key words representing the starting letter

A – Alfa

B – Bravo

C – Charley

D – Delta

E – Echo

F – Foxtrot

G – Ghost

H – Hotel

I – India

J – Juliet

K – Kilo

L – Lima

M – Mike

N – November

O – Oscar

P – Papa

Q – Quebec

R – Romeo

S – Sierra

T – Tango

U – Uniform

V – Victor

W – Whisky

X – X-ray

Y – Yankee

Z – Zulu

2. The source B

The source appears in the air in the beginning of an hour. Each transmission course starts with 10-minute tuning: continuously repeated set: 3-digit combination (its own for each message) (three times) and the whole range of digits: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 (once). With the beginning of 11th minute: a beep signal (ten times repeated), afterwards: „cut one eight two“ (if the cut 182 is being transmitted) (repeated twice), then the message follows. After transmitting the whole message: „repeat“, and the entire procedure repeats. With finishing the repeated transmission: „end“, afterwards in about 25 sec the carrying frequency is switched off.

The message is repeated in the whole body and always completely. The duration of a transmission course is limited by one hour. Tempo of the speech is quite high (higher than that of the source A) and always the same. Rhythm of the speech is fixed: on three counts — the first three digits, the next one count — blank, the next two counts — the two last digits of a 5-digit combination, the next two counts — blank, afterwards — the next combination. An intonation accent is clearly noticeable on the first digit of each combination (up) and on the last digit (own). Slight down accent is noticeable on the third digit.

For the Russian ear it is often difficult to differ: 5 - 9, 9 - 1.

The number of a cut equals to the number of 5-digit combinations in the message.

3. The source C

All the messages start with 5-minute tuning which consists of repeated 3-digit combination, its own for each message. Afterwards two 3-digit combinations follow (or one — 3-digit, another — 2-digit) repeated twice, the second of which equals to the number of 5-digit combinations in the message coming next. Each combination in the message is pronounced twice. Thus the whole message is always repeated completely. Each message finishes with the same two combinations it started. The transmission finishes with five zeros combination. Not always but often the source appeared in the air in the beginning of an hour. The attempt to identify any regular schedule was not successful.

Tempo of the speech is about the same for each message and lower than that of the source B (approximately equals to that of the source A). The rhythm is not fixed and slightly varies. Both the beginning and the end of each combination are not accented; intervals between the combinations are practically the same as those in-combination. These both aspects together would make separating combinations quite difficult if not ‘combination-by-combination’ way of repeating. There is not any intonation groups within each combination. In the same way like in the source B it is difficult to differ: 5 - 9, 9 - 1.

4. Few comparative notes

The source B is rather the most distortion resistant one: due to the digital content and the fixed rhythm of pronouncing the digits. Besides, pronouncing the whole range of the digits while tuning does also foster acoustical/hearing adaptation of a recipient and additional selectivity under the air distortions condition.

The next (in the distortion resistance priority) is the source A, which takes the advantage due to the meaning-identification of the code/key words.

The obvious deficiency of the source C is the non pre-warning signals start of the transmission of the messages.

It has been still left not clear: which way is more efficient in sense of higher distortion resistance (taking into account different types of the air distortion at the short waves band: periodical and not periodical noise, swing, flickering etc): repeating the message in the whole body (sources A and B) or combination by combination.

One the same for all the three sources way of correspondence between the number of a group or a cut and the number of digital or letter combinations in the message can indicate that all the sources are in fact just one mega-source (by a country of origin, by another way of belonging) with the different ways to build (or to code) the messages.

Taking into consideration the similar way to finish their messages, all the revealed Russian speaking sources can find their origin in the same place with the source C.

The frequencies of all of the three sources are pretty close. A slight accent in all the messages can indicate that the transmissions originate most likely not in the English speaking countries (country).

Considerable time difference in the schedule of EZI messages and YHF messages of the source A can indicate that these two recipients (EZI and YHF) have their locations on different continents (YHF — in America or Asia).