Tag Archives: Sony ICF-SW7600G

Playing music with computer-emitted interference

RFI-Sony-7600GSWLing Post reader, Chris Smolinski, writes:

Here’s my Mac Book Pro (2010 model) playing Mary Had A Little Lamb over the radio, by modulating the RFI (Radio Frequency Interference) produced by it and other computers. As picked up on a Sony 7600G receiver. I found the best reception was on the long wave band, although I could continue to hear it well above the AM (medium wave) band, past 1700 kHz. The signal was pretty much everywhere, no matter where I tuned, in 1 kHz steps.

Picking up radio emissions from computers is one method that can be used to spy on them.

I used the source code available here: https://github.com/fulldecent/system-bus-radio

If you want to see some radio related software I’ve written, please visit http://www.blackcatsystems.com

Click here to view on YouTube.

That is fascinating, Chris. While I was well aware that computers and mobile devices (of all stripes) produce RFI, I had no idea that it could be used for spying. I love how you’ve manipulated this interference to play a tune! What a creative hack!

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Chris field records NHK while traveling in Peru

Chris-Peru

SWLing Post reader, Chris, has just shared a recording of NHK World he made while traveling in Peru on Monday (April 21st, 2014).

Yes, that’s his photo above taken in the picturesque coastal town of Máncora. Can you tell I’m envious? 

Chris recorded this broadcast starting at 10:00 UTC on 9,625 kHz with a Sony ICF-SW7600G and using a Sangean ANT-60 antenna. The actual recording was made with Chris’ Sony ICD SX712 digital recorder and he uploaded it using a Dell Windows 8.1 (8 inch) tablet.

That, Chris, is a nice field recording combo!

Click here to download his recording as an MP3, or simply listen via the embedded player below. This recording will also be available on the Shortwave Radio Audio Archive.

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