Last time I spotted something like this while scanning on VLF frequencies, it did not occur me to record this strange and beautiful phenomena. Better luck this time!
With center frequency around 9kHz, the signal sounds like a whale or dolphin singing while demodulated as USB or LSB. No idea if its a natural phenomena or some sort of VLF/ELF transmitter tuning artifact (or a trolleybus passing by), but it is a spectacular signal nevertheless!
The audio recording is here: HDSDR_20120210_155552Z_13kHz_AF.wav (11.8MB)
Corresponding RF spectrum recording : HDSDR_20120210_155552Z_20kHz_RF.wav (47.5MB)
Another RF spectrum recording: HDSDR_20120210_155054Z_20kHz_RF.wav (42.7MB)
To browse the RF recording yourself, one will need HDSDR software.
UVB-76 Live stream |
Ukraine - 34 Kanal |
currenttime.tv |
DISCLAIMER
IT IS TIME TO TAKE SIDES
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