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SDR Gain

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  • helios
    replied
    0 gain is probably too low, even with preamp. You can observe the signal strength for individual aircrafts on the web interface and there is an overall statistic in /var/log/dump1090-mutability.log.
    The unit is dBFS (dB relative to full scale) and the dynamic range reaches from about -40dB (noise floor) to 0dB FS.
    I have a 20dB preamp and my gain is at 28.0dB. But the optimum gain vastly depends on the individual components.

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  • SV1RVP
    replied
    Thanks for the fast response

    edit
    Code:
    sudo nano /etc/default/dump1090-mutability
    Code:
    the default is  GAIN="max"
    i to change to "0" because i have a preamplifier
    Code:
    GAIN="0"
    thx
    73

    Leave a comment:


  • SV1RVP
    started a topic SDR Gain

    SDR Gain

    Hello.

    I have raspberry pi 3, last raspbian & dvbt usb , how to change sdr gain?

    thx
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