[Arran]

This thread reminds me, there was a field test conducted in the mid to late 1940s to establish whether the improved fidelity of FM was due to frequency modulation or because of it's band width, and immunity to noise because it was at a higher frequency, so they built some AM receivers designed to receive AM stations that broadcast in a wider bandwidth, at a higher frequency. I think it worked somewhat better then the medium wave AM broadcasts, but frequency modulation was definitely the deciding factor in terms of electrical noise. This is not to say that AM could not sound better, a lot of the poor sound quality is due to overmodulation, and narrower bandwidth then they they are actually allowed to use, I think that many stations are just poorly maintained, one I have listened too sounds downright tinny, like the audio is compressed,
Regards
Arran