"Jon Noring" wrote in message
...
[New Yahoo Group started: "AM Tube Tuners". See end of this message
for more info.]


In the last couple of years I've posted various inquiries to this and
related newsgroups regarding high-performance, tube-based AM (MW/BCB)
tuners, both "classic" and modern.

[snip]

Does anybody broadcast true hi-fi AM anymore? The FCC limits the total
bandwidth to 20 kHz or an audio bandwidth of 10 kHz but I think most
broadcasters don't even go that far. More than that, nearly all the
broadcasters now seem to be pre-emphisising the trebles, and AM usually
sounds shrill on a wide bandwidth radio. I assume they do this to somewhat
compensate for the normal IF roll off in a typical radio. Add in the other
audio processing that broadcasters use, and AM doesn't really sound a whole
lot better on a wide band radio.

I did hear some classical music on a local ethnic station a few weeks ago
which sounded quite good. It actually had some dynamic range and the
station is one of the few which sounds like they use their full bandwidth.

Getting wideband IF transformers will be a real problem. I don't know of
any NOS sources for them.

Frank Dresser