I will expand on this to add that there are still some AM stations that sound pretty good (mostly small ones that are owned either by individuals or small, regional corporations; the big corporatiuons (Audacy, Cumulus, etc don't seem to care much how their stations sound (KCBS AM has been sounding intermitently rather bad lately, almost like there's some faulty equipment), as long as they make money). KVOL near Lafayette, LA and WION in Ionia, MI are two examples I've come across lately. KVOL, in particular, makes good use of the full 10kHz that the FCC allows, and sound very good. I've compared their OTA signal (via the ScratchMoney SDR – which is one of those wide bandwidth SDRs that opens up to the full 10.2kHz – to the stream, and they actually sound quite similar (the stream is fuller and has stereo, of course). The OTA signal would undoubtedly sound much better through a decent hifi radio with wide bandwidth capability, but the SDR isn't bad. Perhaps the only thing they could do to improve their sound further would be to broadcast in AM stereo. Then it'd be a perfect example of AM at its best.
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