[Scott Dorsey]

Mike Rivers wrote:
On Jan 5, 2:57 pm, (Scott Dorsey) wrote:

"Almost as good as AM radio!"

But AM radio is better (fidelity-wise, not content-wise) today than
when I was growing up and listening on headphones connected to a
crystal detector. I think that I got to be the way I am today by
licking the lead mount for the galena crystal trying to get better
contact, for better reception.

I doubt it. Around the time when the NRSC standards were being set up
in the late eighties, some folks from the NAB measured channel bandwidth
and group delay of a bunch of radios, and a 1929 RCA Radiotron TRF set
came out as number one. I'm not surprised that the current range of
crappy AM radios with 4 KHz cutoffs didn't come out so well, but I was
surprised an old TRF set would be any better than an All-American Five.

With a crystal set, of course, the headphones are the only bandlimiting
in the circuit. (Well, plus the cable parasitic capacitance.)
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."