How to setup the SDR for maximum and close range? Impossible?

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#Script for "piaware sd card image" uses:
os.system("sudo systemctl restart dump1090-fa")

#Script for "dump1090-fa on Raspbian" uses:
os.system("sudo systemctl restart dump1090-fa")

#Script for "dump1090-mutability on Raspbian" uses:
os.system("sudo systemctl restart dump1090-mutability")

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https://discussions.flightaware.com/t/tweaks/20339/38

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