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Thread: Raspberry Pi 3 B vs Raspberry Pi Zero W

  1. #1
    Flight attendant majo's Avatar
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    Raspberry Pi 3 B vs Raspberry Pi Zero W

    After replacing a Pi 3 B for feeding to FR24 by a Pi Zero W (location, antenna, FA pro stick, cables, homenet, internetconnection etc. everything unchanged)
    unfortunately my statistics concerning aircraft seen, max. distance, positions reported etc. went down significantly!

    Does someone here has an explanation for this or similar experience?

  2. #2
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    USB noise. Or different gain settings now

    Sent from my XT1092 using Tapatalk
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  3. #3
    Flight attendant majo's Avatar
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    Hi Oblivian

    USB noise could really be a factor because in order to connect the Pi Zero and the FA-stick I had to use a micro USB to normal USB pigtail adapter. Ill oder a new one to test if that makes a difference.

    Im not familiar with gain settings. What is the background here?
    Last edited by majo; 2018-08-07 at 08:26.

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  5. #5
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    Actually, that one

    https://forum.flightradar24.com/thre...highlight=gain

    Has a guide to change and see if settings adjust
    Posts not to be taken as official support representation - Just a helpful uploader who tinkers

  6. #6
    Flight attendant majo's Avatar
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    Quote Originally Posted by Oblivian View Post
    Wow, that opens a new level of adjustments for me. Thank you, Ill try to work through step by step.

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  8. #8
    Captain abcd567's Avatar
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    The easiest way is to try different values of gain listed below, and for each gain setting, observe message rate, plane count etc for a while. Finally set the value which gives you best results.

    50, 45, 40, 35, 30, 25, 20

    The method to change/set gain depends on what decoder software you have installed. Examples are:

    • Pi24 image
    • PiAware image + fr24feeder
    • Raspbian image + dump1090 + fr24feeder
    • Raspbian image + dump1090-mutability + fr24feeder
    • Raspbian image + dump1090-fa + fr24feeder

  9. #9
    Flight attendant majo's Avatar
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    Thank you abcd567,

    do you suggest gainchanges just for the ordinary dvbt-usb-sticks or also for the FlightAware pro sticks?

  10. #10
    Captain abcd567's Avatar
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    Quote Originally Posted by majo View Post
    do you suggest gain changes just for the ordinary dvbt-usb-sticks or also for the FlightAware pro sticks?
    Due to high gain (18 dB) of built-in rf-amplifier of ProStick, the gain reduction/adjustment is more beneficial (rather necessary) for ProStick.

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