Russian E07 "English Man" number station (with preceding, strange test transmission)

Russian E07 "English Man" number station at 13363 kHz (long message with preceding, strange test transmission). I tuned in early to catch this number station and caught a rather strange test transmission on frequency prior to the numbers being transmitted. As you can see/hear, it started with a sound burst, then a strong carrier tone, then what sounds like XPA polytone sync tones. (Numbers transmission starts around the 7:06 mark).

More info at: http://priyom.org/number-stations/english/e07

Update: After I posted this video, I was contacted from a person in Germany who stated that the sound burst is "a variant of the Russian Mazielka selcall system called X06, in this case X06b, because this scale consists in less than 6 tones: "1-6-" (the lowest and highest tone of the scale, both in double-length)."

Since I had never heard of this, I looked it up. The X06b is an interesting signal: http://priyom.org/diplomatic-stations/russia/x06b

More about X06 here: http://www.sigidwiki.com/wiki/Mazielka_(X06)

Видео Russian E07 "English Man" number station (with preceding, strange test transmission) канала Curt Rowlett