Video: Uncovering a Buried Co-Channel Station with the New AirSpy SDR# Tool

AirSpy’s Youssef Touil shares a video from YouTube author “PY3CRX&PY2PLL” which dramatically demonstrates the extent to which the Co-Channel Canceller tool can uncover a much weaker signal beneath a powerful one:

Youssef commented on the video that It only needs some tweaking to the lock/offset to get a perfect decode. So, presumably the result could be even better than heard here.

For more information on the Co-Channel Canceller, see my original article here, and the follow-up piece.

Guy Atkins is a Sr. Graphic Designer for T-Mobile and lives near Seattle, Washington.  He’s a regular contributor to the SWLing Post.

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7 thoughts on “Video: Uncovering a Buried Co-Channel Station with the New AirSpy SDR# Tool

  1. Bill R

    I’m afraid I am so ignorant on these radios that I don’t know how to get the new advanced filter. I presume I have to either update my software or replace it, but darned if I know which of the many files in the AirSpy download package is the one I’d have to install. Does anyone know?

    I already have one of their radios and am using an earlier version of the software. I just push buttons and move sliders on the various filters and noise blankers. Nothing much seems to change. If I had some idea what all these different filters and blankers were, what they did, how they worked, and how to operate them, I might be able to do better. I would even read the manual. If there were a manual. If there IS a manual. Otherwise it appears that we are just supposed to know about all of this somehow. Did I miss the memory implant injector in the radio’s package? Looked everywhere for it.

    Reply
    1. Guy Atkins

      Hi Bill, you don’t need to install any plugins; just download the latest SDR# version from the AirSpy web site and it’ll be there in the list on the left. Youssef has continued to improve the Co-Channel Canceller over the last few days, so just install the very newest version even if you updated recently.

      I too look forward to a tutorial or some guidance; I’m sure something will appear on YouTube in due time. Until then I’d recommend studying the annotated text for the screenshots I’ve included in my SWLing Post articles on this subject… these marked-up screenshots came directly from Youssef’s Twitter posts.

      73,
      Guy

      Reply
  2. George A Stein

    Which unit is the recommended airspy, the hf+ or the hf+ discovery. What are the main advantages of the hf+ since it is 30 bucks more?

    Regards,
    George, NJ3H
    Redmond, Oregon

    Reply
    1. Guy Atkins

      The HF+ Discovery is generally recommended, as it has a preselector built-in which makes it even more overload resistant than the original.

      The HF+ has the separate HF & VHF antenna inputs, and the metal case, which some radio hobbyist desire. The Discovery version is less expensive for these reasons, plus lower manufacturing costs.

      Note that the Discovery is no slouch in the shielding department, despite its plastic case. AirSpy’s manufacturer ran some tests during the design phase that showed the Discovery’s internal shielding techniques were the equal or better of the original HF+.

      73,
      Guy

      Reply
  3. George A Stein

    Which airspy is recommended, the hf+ or the hf+ discovery? What are the basic differences? The discovery is 30 bucks less, so what is its downfall, if any?

    Does the currently available sdr# have the co-channel capability or was Guy using a version not released to the public as if yet.

    Reply
    1. Guy Atkins

      As I mentioned in my reply to Bill, above, be sure to download the latest SDR#, as it has all of the evolving tweaks and improvements Youssef has made to the Co-Channel Canceller.

      Guy

      Reply
  4. 13dka

    This is just spectacular and ground-breaking, and an MW DXer’s dream. Also makes me think what that could mean for stations that are subject to jamming. Thanks for keeping us posted!

    Reply

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