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Thread: Filter position?

  1. #11
    Captain
    Join Date
    Apr 2018
    Posts
    605
    You should understand what a bias-t is. Maybe google it to understand what it does?

    If you have an rtl-sdr v3 you can activate the internal bias-t.
    (https://forum.flightradar24.com/thre...e-power-on-off
    https://www.rtl-sdr.com/getting-the-...-ads-b-images/)

    Otherwise you need an external bias-t and feed that with 4 to 5 V.
    (For example: https://www.ebay.de/itm/10MHz-6-GHz-...9/283289518784)

  2. #12
    Passenger
    Join Date
    May 2019
    Posts
    13
    I have an RTL-SDR V3, so I can buy 1090 MHZ ADS-B LNA, activate the internal bias-t and have lower noises and better receiption, yes?

  3. #13
    Captain
    Join Date
    Apr 2018
    Posts
    605
    Yes that will work.

  4. #14
    Captain
    Join Date
    Apr 2018
    Posts
    605
    There have been some problems getting this stuff to work, blacklisting some various kernel drivers for dvb-t should fix any problems.
    You can already do that right now then you won't forget it when you have the LNA:

    Code:
    echo -e 'blacklist rtl2832\nblacklist dvb_usb_rtl28xxu\nblacklist rtl8192cu\nblacklist rtl8xxxu\n' > /etc/modprobe.d/blacklist-rtl-sdr.conf

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