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This is a video from SDRplay - This recording is courtesy the BBC Radio 4 programme "PM" . There are many theories about these transmissions but the great thing about having your own shortwave receiver is you can listen for yourself and decide. If you already have a PC, then an SDRplay RSP and a length of wire as an antenna is a great way to get into (or get back into) the interesting world of shortwave listening.
The special screen referred to 3 minutes in, is of course the visual spectrum display and waterfall you get with a Software Defined Radio (SDR) receiver like an SDRplay RSP.
Bob WA2SQQ has observed that UVB76 is on 4.625MHz
SDRplay are makers of the RSP family of SDR radios. See the full list of SDRplay videos and applications documents on: www.sdrplay.com/apps-catalogue/
The RSP family of SDRs from SDRplay cover 1kHz to 2 GHz with no gaps and give up to 10MHz spectrum visibility.
SDRplay is a UK company. The RSP SDR receivers are made in the UK and can be purchased for worldwide delivery directly from www.sdrplay.com/ (click on purchase and select your country to view shipping costs) or you can buy from any of our worldwide resellers listed here: www.sdrplay.com/distributors/ Many of the resellers offer local free shipping and/or local language technical support.
The SDRplay KZbin Channel is: / sdrplayrsp