Some other folks called them and they cranked the volume up. It's slightly better than AM radio quality now minus the noise, hum, and random crunching sounds. Some of the sibilant sounds have an unnatural crunching sound (I'm sure there's a technical term for this; it's an explosive sound similar to clipping). It sounds best at a low volume.
Essentially HD3 gives an FM station a free mono AM quality station. That's not a bad deal at all!
Now they're reading newspaper articles in the "reading for the blind" fashion, including the punctuation like "close quote" and "close paren".
NOW: my post on AVS Forum.
NEXT: someone else's post on AVS Forum.