UVB-76 Live stream

Ukraine - 34 Kanal



During almost 12 years the repeater has been up, I have been keeping it apolitical. But Putin has gone batshit and UVB-76 radio station is a weapon. So, while I keep translating it, you are welcome to also watch the Ukrainian news channel '34 Kanal' to see, what kind of events this signal is actually participating at today.
Slava Ukraini!

DISCLAIMER: I have no association with UVB-76 station, neither do I have any clue what is the content I am relaying. I can only assure, that the signal is received on 4.625MHz about 300km NW from supposed origin and retransmitted unaltered. In no way can I guarantee this service, nor be considered responsible of any content re-transmitted. The only purpose for this relay to exist is because lot of people who do not have equipment or are located too far from station seem to be interested about listening to it. Note, that because of shortwave radio signal propagation specifics the station is not always audible

Tuesday, October 5, 2010

Mibbit IRC client video waterfall embedding works!

For all of you using the Mibbit client for IRC chatting (not the widget on a blog page, but the one what you get when pressing the "Clock for New Window" link above the widget) the news is, that you are now able to get the WinradHD waterfall window embedded inside the Mibbit client window!

In order to do that, just type the address "http://justin.tv/uvb76repeater" on a IRC chat window, and it will automatically convert it to a nice icon of monkey with a camera. Click on that icon, and voila!

This is how it looks:

Thats another one for using the Mibbit for IRC, besides its fascinating cross-browser compatibility and absence of flash nor java whatsoever (ok, the video part is flash, but thats inevitable with justinTV).

Some words about the waterfall streaming in general: Audio streaming seems to be lightyears ahead from the video streaming. It took me less than a hour to set up the audio feed and it has more or less worked ever since.
The WinradHD screen broadcast has taken two different streaming providers (after careful selection from about 10) and at least three different software setups after I can announce, that it is now theoretically stable (with an exception that it has a 2-second pause on every full hour when it is having a forced restart to work around of yet another bug).

What makes an unattended video streaming so difficult is associated with the fact that most, if not all, video broadcast services are aimed towards average Jane and Joe using their webcams. It has to be as simple and straightforward as possible and therefore all the streaming sites use flash plugins for broadcasting as default.
It works nicely most of the time, except the fact that the flash plugins universally seem to lack error recovery part on connection  loss. Therefore, on first glitch, the broadcast stops. Needless to say, you have to manually click on a "Broadcast" button again to restart it, what is pretty useless running unattended.

The only service apparently having some sort of API available was Justin.TV. They have developed a broadcaster application for Windows what takes VLC media player stream as a source and relays it to the website. Works nicely, but with two exceptions: It  still does not have the connection recovery part implemented as of version 0.41 and it has a nasty memory leak what slowly consumes all your memory over time.

Both shortcomings are handled at the moment with restarting the broadcaster automatically on every full hour, what introduces a 2-second interruption on video, but avoids trashing the memory and in case the connection was lost, gets it restored in one hour on worst case scenario.

Sunday, October 3, 2010

UVB-76: One Frequency Fits All

It has now been two weeks since I updated this site, for no other reason than the fact that I had to re-balance my life between UVB-76 and my family and kids! :)

Once again someone decided to pull a plug on Buzzer on September 23, 2010 at 15.48UTC after being in and out during September 21 and 22. This is how it sounded:


However, the frequency has been anything else but dead and digging myself through 15 days worth of archives I have made notes about 13 (!) different transmission types worth noting on 4.625MHz USB as received here. Here's a summary, not in a order of appearance but as I made the notes:

1. All over the mos distinctive transmission type has been the male and female voice transmissions carrying MDZhB signature:

It has been already disputed that UVB-76 may have changed to that callsign permanently, but please bear in mind two things (following is originating from discussions at http://www.radioscanner.ru/forum/topic12415-35.html):

 - As far as communication dispatches seem to be built up, the transmission site (and the frequency associated) is a separate entity from the party what actually airs the "content". Therefore in any moment can someone decide that particular transmission site will now service another "content provider" and so will be. In that context, MDZhB is now simply using the same transmission unit as UVB-76.
- UVB-76 has not been very active with voice messages throughout its lifetime, so the fact that there has not been any lately is not really giving any information if its more or less in good health than always.

2. A around September 27, the background voice transmissions started to happen what are almost impossible to translate, but sound like a number callsign following by word "prijom" (Russian equivalent to "over"). They seem to be made rapidly with several callsigns, so it may be a commcheck of some sort. They sound little bit pitch-shifted on USB from their AM modulated counterparts, so they are slightly off from the 4.625MHz.

3. Something what sounds like a digital packet transmission has started to appear more frequently:

4. Lot of 50Hz noise is audible on the 4.625MHz. This is not a local problem at the UVB-76 Internet Repeater, as the same line noise is received by Russian amateurs.

5. There is a morse transmission happening regularly. I will not get into speculating what it is and where its coming from, but here's the sample:

6. Another type of morse sounds like "tapping". This is just a regular CW transmission which is very close to 4.625MHz, so it is not getting audible properly.

7. Heavy static is appering on the UVB-76 frequency and there have been some speculations that it is some sort of jamming attempt. It does not seem to be an interference, as it starts and stops abruptly.

8. With summer giving way to fall and no heatwave around, the shortwave propagation gets better and better. The 70m antenna I am having is picking up all sorts of signals and sometimes overloads the radio module entirely, so there are commercial stations audible what have nothing to do with UVB-76 and are not even close to the frequency. If this keeps happening, I have to build an attenuator what switches on for the nighttime and off for day.

9. A sine wave has appeared regularly on the broadcast what does not seem to be a separate carrier frequency but is actually transmitted on 4.625MHz. This is an example what makes one think so:

10. Random voice transmissons and commchecks

11. RTTY teletype transmissions
(Seemed ordinary enough, but could not find a sample when I started to look for one ..)

12. Some sort of interference what I can only describe as "BuRRer"

13. And besides all that, there are just strange sounds appearing, what are not interferences but seem to be actual transmissions of a sort. Two examples here:

Some of it may be artifacts of the other stations bleeding in etc., but some of them seem to originate from whatever transmits on 4.625.

It seems that if one wants to listen to the magics of shortwave radio, you will only need to tune in on a single frequency and it delivers! :)

And for a record, here is a chronological list of transmissions I have found from last two weeks of archives. As the individual track count is quite large, here are the links to the daily sets at SoundCloud: