The institute webpage that features the Buzzer frequency is simply using a constant known signal that is transmitted on 4625 khz. The buzzer has been transmitted on that frequency for decades as is a standard set frequency and know quantity. The institute is simply using it as a set and unvariable standard. The purpose of UVB-76 is a simple and effective command and control broadcast. The frequency used as constant indicates its purpose is within the Moscow Oblast region. If it used higher HF or regularly switched for propagation conditions then it would serve a purpose outside the region that it is located.
UVB-76 is not the only Russian command and control broadcast that utilises a unique and constant carrier in order to keep the frequency maintained and open. These other known broadcast networks are regularly active in the same codeword message format exhibited by UVB-76. The clue is in the traffic sent. The only mystery about UVB-76 is that the codewords broadcast are few and infrequent compared to others.
All the Russian broadcasts follow the same pattern with their codeword and priority traffic. The carrier is interupted and the codeword is sent. Note the codeword traffic sent on UVB-76
http://en.wikipedia.org/wiki/UVB-76
Note the codeword format used. UVB-76 93 882 NAIMINA 74 14 35 74
It is exactly the same format as used on other Russian military networks in both Morse and Voice.
Dedicated radio enthusiasts have been monitoring these Russian Military networks for years and building up the picture. It is a tried and tested, simple and effective command and control system used by all Russian forces. This includes the Russian Civil Defense network now superseded by the Ministry of Emergency Situations in the 1990s.
The flash message pattern as transmitted on UVB-76 follow the same format as observed on other Russian networks. The same format is used on the other Russian voice networks such as 'Squeaky Wheel' and 'The Pip'. See later links.
Example of Morse codeword traffic
RCV 43243 SHOLAST 5301 3473
REA4 01293 BALANVA 1958 4088
RDL 82024 75205 BROMNYJ 1346 1872
http://www.cvni.net/radio/nsnl/nsnl133/nsnl133mil.html
http://www.cvni.net/radio/nsnl/nsnl129/nsnl129mil.html
http://www.cvni.net/radio/nsnl/nsnl105/nsnl105mil.html
As you can see the frequency range covers all the the HF band. Note the VLF transmissions in order to broadcast to submerged submarines. One of the most active carrier maintained stations is REA4. Unlike UVB-76 is utilises a number of HF frequencies. The frequencies in use are maintained with revolutions. REA4 is probably the most active Russian Morse broadcast that regularly sends flash priority traffic in the same format as UVB-76. The radio enthusiasts who monitor the Russian networks regularly note the codeword activity being passed over the networks within an active time frame. Passed down from a broadcast and noted on simplex and complex networks with outstations repeating back the codewords in order for the control to verify correct receipt.
You can see from Russian radio scanner forum that some of the Russian conscripts knew of the Buzzer being set up on their radios. The radios were located in military bases in the Moscow Defence Region and fulfilled an emergency communications system.
http://www.radioscanner.ru/forum/topic12415.html
Remember that the Buzzer isn't the only broadcast station in Russia that sends out the same format voice messages. Other stations such as the 'Squeaky Wheel' and 'The Pip' also function in the same manner.
http://www.youtube.com/watch?v=y8LQMDQAoVk
The Squeaky wheel
http://www.youtube.com/watch?v=HxTOK-cZpsg
The Pip
http://www.youtube.com/watch?v=2YkA16v9-X0
http://www.cvni.net/radio/nsnl/nsnl112/nsnl112vm.html
'The Pip' message 'S30 Pip on 3756 kHz. Both Tom and I have heard messages from S30. 3-12 1821 UTC Pip followed by a message in Russian read by a YL. 5-12
1506 UTC Male announcer repeated a message for about a minute or so. 5-12 1810 UTC Male with short one minute voice announcement. 6-12 1817 UTC
Short voice message. from 1817-1818 UTC.'
The UK used a similar system known as HANDEL for its Civil Defence warning system. The only difference was that instead of shortwave the system was relayed over the national phone lines. The problem with the phone line system was that it obvioulsy relied heavily on telegraph poles and lines. The Russians obviously built a more robust system to function post attack. My theory is that the Russian Buzzer is the Civil Defence network system for the Moscow region. The use of HF radio would mean that it would function during the electro magnetic pulse wave generated in a nuclear strike. This is one of the reasons that the Russians still use Morse Code on their networks and still able to get through in an EMP environment.
http://www.ringbell.co.uk/ukwmo/Page211.htm
You can see the HANDEL system in operation on the following video. See 05:00 point on video from the 1970s. The UK disbanded the specific nuclear warning Civil Defence
network in the early 1990s.
http://www.youtube.com/watch?v=RsCJMYgFNuU
A carrier is maintained on the broadcast (regular ticking) until a command and control message is sent.
http://www.youtube.com/watch?v=An3ctClI_z4
During the Soviet era the Civil Defence network was huge and a played a vital part in defence of Russia. It required command and control and so does the modern day Ministry of Emergency Situations.
http://en.wikipedia.org/wiki/Ministry_of_Emergency_Situations
The only mystery in relation to UVB-76 is its very infrequent activation in codeword messages. That infrequent activation leads me to the theory that it is the Moscow Oblast Civil Defence network going through the motions of a command and control exercise. The Russian Civil Defence organisation is run on military lines with military commanders.
In their sent format they mean nothing. The codeword and figures are not breakable. It is a pre-arranged codeword maintaining currency for a set period. The recipients simply refer to their flash message codebook and respond to the action for that particular received codeword. Simple and effective and demonstrated regularly on other Russian Morse and Voice broadcasts and networks.
