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Polyphemus

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    Polyphemus reacted to chicken in [POTM] dAISy - A Simple AIS Receiver   
    Hi Polyphemus,
     
    Yes, dAISy includes a bandpass filter.
     
    I experimented with external LNAs a few times, but didn't see any benefit. Though I never was very systematic about my experiments.
     
    The max input must not exceed 10 dBm. Even -50 dBm is more than enough to reliably decode a signal. A LNA would only be useful if it pulls very weak signals (say below -100 dBm) out of the noise.
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