At one point or another, I was either taught or entertained (often both) by these pages :
Radio Collecting & restoration links
Antique Radio Home Page - Phil's Old Radios Great articles, super collection
Nostalgia Air Many schematics & articles here
WAØJCV's Page “the old radio shop” is a must-read. Oh, why can’t that happen to me?…
The Philco Repair Bench Chuck Schwark’s great Philco site
rec.antiques.radio+phono Usenet discussion group. Would be great if it didn’t have ebay wars every 8.75 minutes
Yahoo! Antique radio group Less people here, but very helpful and MUCH more friendly.
Radio related documentation
BAMA Boat-anchor documentation repository, some test equipment docs here as well.
Chapter 4 Radio Simple AM Transmitter
Magic eye tubes Great site showing different types of eye-tubes.
Radio history links
Early Television Foundation Ok, so it’s not radio, but it’s still very entertaining and somewhat related.