{"id":46013,"date":"2020-10-18T20:50:49","date_gmt":"2020-10-19T00:50:49","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=46013"},"modified":"2020-10-18T20:52:33","modified_gmt":"2020-10-19T00:52:33","slug":"airspy-sdrs-new-killer-feature-the-co-channel-canceller","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2020\/10\/airspy-sdrs-new-killer-feature-the-co-channel-canceller\/","title":{"rendered":"AirSpy SDR#’s New Killer Feature: the Co-Channel Canceller"},"content":{"rendered":"
\"An<\/a>

A version of AirSpy’s popular SDR# software, showing the dark mode interface introduced in 2019. SDR# is always evolving, and the latest new tool is the Co-Channel Canceller.<\/p><\/div>\n

It’s easy to take for granted the magical math<\/em> that happens in Software Defined Radio. Occasionally though a breakthrough occurs which really grabs our attention, thanks to the hard work and bright minds of the designers behind the receivers and the software.<\/p>\n

On the software side, the first series of “wow” moments happened for me in 2007-2008 when Nico Palermo of Perseus SDR fame expanded the program’s alias-free bandwidth incrementally from a modest (but impressive for the time) 100 kHz all the way up to the current 1600 kHz coverage.<\/p>\n

The top-end 1600 kHz bandwidth was a game changer which allowed\u00a0 medium wave DXers the opportunity to record IQ-WAV files of the entire band for later review, analysis, and DXing. It’s even more impressive considering this expansion was done without any additional hardware or receiver updates.<\/p>\n

What did Nico charge Perseus owners for this incredibly useful expansion of spectrum and waterfall bandwidth? Nothing! The program with its much improved features continued freely available to previous and new Perseus SDR owners.<\/p>\n

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Now in 2020, Youssef Touil, AirSpy’s<\/a><\/strong> hardware and software developer, brings\u00a0 a “killer feature” to his own SDR program named SDR#<\/strong><\/a>, for the benefit of medium wave DXers: the Co-Channel Canceller.<\/em> The cost for this innovative tool? Yep, it’s a free addition to SDR#.<\/p>\n

What are the benefits of the Co-Channel Canceller?<\/strong> This question is best answered by listening to three examples published by Youssef on his Twitter feed<\/a><\/strong>.<\/p>\n

Read the descriptions below and listen to the brief audio files. In each example the Co-Channel Canceller is turned on and off a few times:<\/em><\/strong><\/p>\n

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Experimenting with the Co-Channel Canceller. Here, the plugin is cancelling 594 kHz and letting 596 kHz thru. It's workish, but still needs some polishing. Check the audio!#Airspy<\/a> #sdrsharp<\/a>https:\/\/t.co\/h5TMo4OlQL<\/a> pic.twitter.com\/koMKqQR1tW<\/a><\/p>\n

— prog (@lambdaprog) October 15, 2020<\/a><\/p><\/blockquote>\n