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Thread: Strange objects

  1. #1
    First officer LN-MOW's Avatar
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    Mar 2010
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    Coal Mountain GA
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    Strange objects

    I am feeding using an SBS-3 and a roof antenna, which give me a range of around 200 nm. I have also been playing with a DVB-T stick and this afternoon I hooked it up to the antenna I use with the SBS-3. The results were really good - I'm not able to detect any significant difference using the $3.95 stick versus the expensive SBS-3.

    However - and that' why I'm writing this post - I got a lot of signals with hexcodes B00xxx. From what I can see, these are not valid codes. They were moving and appeared to behave like jets, both speed and altitude. One appeared to pass close to me and I could see an object in approximatly the same position. Could this be MLAT-related, that the receiver receive position signals, but is not able to identify the aircraft? Or what create these signals? You can see several in the attached screenshot.


  2. #2
    First officer nzradar's Avatar
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    Apr 2011
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    Palmerston North, New Zealand (T-NZPM21)
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    Spooky man!
    Michael
    Palmerston North,
    New Zealand
    ex-FR24 Feeder

  3. #3
    Super Moderator speedbird1960's Avatar
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    May 2010
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    Runcorn / LPL
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    I have seen lots of these over the UK over the last week, sometimes they have just the Registration missing, i have also seen them with Hex: 000000 codes and no Registration.
    They are more than likely MLAT Tests.

    This Playback shows virtualy the same as whats visible on the screenshot.
    http://fr24.com/2013-03-10/15:35/12x/SKW5174/fa7973
    AMS Daily Fight Information: http://schiphol.dutchplanespotters.nl/

  4. #4
    Team FR24 Mike's Avatar
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    We are not making any MLAT tests in live production.

  5. #5
    Captain Birdie's Avatar
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    Have you get a Priest to bless your $3.95 stick ?

    Looks spooky !

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