Re: [A-DX] 4625 kHz

["Hans-Friedrich Dumrese" <hf.dumrese@xxxxxx>]

Als Antwort auf Deine/Ihre Mail vom 3 Jan 2002,  betr. "[A-DX] 4625  
kHz":

> Seit Jahren - gut zu empfangen - auf 4625 kHz ein Klang, der so klingt
> wie das Tuten eines Dampfers oder so ähnlich... schwer zu beschreiben.
> Auf jeden Fall immer in gleicher Länge und mit gleichen (kurzen)  
> Pausen
> dazwischen.

Die gewöhnlich als "Buzzer" titulierte und in der Enigma-Notation als
"S28" apostrophierte Station steht in Russland. Ich empfehle Dir die  
Seite
http://www.geocities.com/uvb76. Hier ein kleiner Auszug:

Callsign     : UVB76
Frequency    : 4625 khz
Mode         : A3E
Hours of ops : 24h
Location     : 55N50/36E47
               (40 km West of Moscow, 10 km North of Zvenigorod)
Modulation   : Buzzer 0.8 sec., pause 1-1.3 sec., repeating 21-34 times
               per minute. (Clear tone beeps observed in 1980's)
Power        : ~10 kW
Antenna      : Omnidirectional
Operator     : Ministry of Defense
Schedule     : 24h; daily at 1000-1050 MSK switch to backup low power
               transmitter.
Purpose      : Channel marker; point-to-point voice communications link
               covering Moscow oblast and Central Russia.
Traffic      : Rare control messages (Rus. "reskript") in Russian, male
               operator, live ; content example:
               "UVB-76. 74, 148. Antimonat. 26, 37, 09, 31."  (repeated
               several times)
First heard  : Around 1982
Malfunctions : Stoppages, background noise, distorted
               oscillator ("buzzer") signal, insertions of
               1000 Hz tone, on-air conversations by staff
               during malfunctions, 2nd and 3rd harmonics
               (9250 and 13875 kHz)
Circuit       : Master Ctrl-> Radio Bureau -> Radio Station
                Room
                "Apparatnaya" "Kross"         "UVB-76"
                                              "143"
Events noted : - May 6, 1994, and July 25, 1994 2nd and 3rd
                 harmonics (9250 and 13875 kHz) observed.
               - December 24, 1997 Control message* observed at 2100  
UTC:
                 "UVB-76. 180, 08. Bromal. 74, 27, 99, 14".
               - June 23, 1999 Control message* observed at 1940, 2005,
                 2040 and 2120 UTC. Unknown contents.
               - July 1, 1999 Strong background noise observed at  
2045 UTC
                 and two weeks thereafter
               - July 5, 1999 No carrier at 2130-2148 UTC
               - October 18-19, 1999 2nd harmonic observed at 2300-0500
                 UTC
               - December 24, 2000 Control message* observed at 0930  
UTC:
                 "UVB-76. 74, 148. Antimonat. 26, 37, 09, 31".
               - December 24, 2000 Control message* observed at 0945  
UTC:
                 "UVB-76. 61,  21. Antimonat. 26, 37, 09, 31".
               - December 25, 2000 maintenance noted at 0850 UTC: a  
1000
                 Hz tone, pause, 0.1 sec. of a female voice (microphone
                 switched on by error?), and at 0900 UTC the "buzzer"
                 came back.
               - March 16, 2001 Different type of modulation observed:
                 suppressed carrier during pauses between "buzzes"
                 (resembling DCS, Dynamic Carrier Suppression)
               - November 3, 2001 Observed at 1040-1120 UTC: long  
pauses
                 (no modulation), "buzzer" with strong background  
noise,
                 multiple insertions of 000 Hz tone, and conversation:
                 [male voice, in Russian] "Ya 143. Nepoluchayu
                 generatora"; [female voice] "Idyot takaya rabota ot
                 apparatnoy". ("I'm 143rd. I don't receive the
                 oscillator"; "That's what the 'Apparatnaya' is  
sending")
               - November 19, 2001 at 05:15 UTC the transmitter with
                 Dynamic Carrier Suppression was in use on UVB76.
               - Unknown time Reports about transmissions on 3320,  
3329,
                 5211 and 5310 kHz
               * Presumed purpose of the control messages is to check
                 readiness of receiving stations. Russian military
                 communications people also call these messages  
"signal".

Neben dieser Aussage habe ich bisher folgendes gelesen:

- Standort: - Penza (300km SE von Moskau)
            - Weißrußland nahe der polnischen Grenze
            - zwischen Kholm (NW von Moskau) und Moskau (DF!)
            - Tver-Region
            - Gegenstation bei der IAEA in Wien im Vienna
              International Centre (4U1VIC)

Inwieweit hier Desinformation gestreut wurde, möchte ich an dieser  
Stelle
nicht erörtern.

73,

Hans-Friedrich
hf.dumrese@xxxxxx

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