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  • #1

    1090MHz antenna and Filter...

    Hello to everyone!

    I'm building a Raspberry Pi Flightradar Feeder.
    I am going to use a 1090MHz antenna at around 5dB.

    Do you think is a good idea to use and a 1090MHz bandpass filter together with this antenna or its not mandatory?
    The improvement between a stand alone antenna and an antenna together with a filter is huge or just slightly better?


    Kind regards,
    John
    Tags: None
  • #2
    Take a gander

    Do I need a Filter? - Find RF Signals In Area - Flightradar24 Forum
    https://forum.flightradar24.com/threads/11450-Do-I-need-a-Filter-Find-RF-Signals-In-Area?highlight=filter
    The space around ADS-B antenna contain not only 1090 MHz signals, but also lot of other signals at different frequencies. The closer the frequency of a signal to 1090 MHz, your ADS-B antenna picks it stronger. For example if there are three signals of equal strength, one at 144 MHz, 2nd at 850 MHz and 3rd at 950 MHz, the ADS-B
    Posts not to be taken as official support representation - Just a helpful uploader who tinkers

    Comment

    • #3
      Thank you Oblivian!

      Comment

      • #4
        By the way... can I use the original Raspberry Pi (2011.12 version) as a Flightradar feeder?
        Or its too slow and unable to receive multiple planes simultaneously?

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