One can narrow down the bandpass filter to just enough for the signal one wants to receive. Out of the noise and surrounding interference. Out of the many features and advantages of a quality SDR receiver, I especially like its effectiveness in picking extremely weak signals When paired with free SDR software (running on a PC), it can serve as a beginner's ham radio receiver or as a standby receiver for an amateur radio station. The small SDR hardware pictured above is an entry-level unit.
