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    Homebrew SDR radio antenna question

    I am building a SDR type radio using a microprocessor and self contained radio IC. The frequencies will be limited for sure as the datasheet claims reception at 153kHz ~ 279kHz, 520kHz ~ 1.71MHz, 2.3MHz ~ 26.1MHz, 64MHz ~ 108MHz. I want to be able to listen to a frequency and constantly scan...