I plan on going Friday morning for the flea market. It's not all radios -
I got some good TV stuff last year.
"The Antique Radio Club of Illinois (ARCI) will be holding its 30th annual Radiofest on August 5 -7, 2010 at the Willowbrook Holiday Inn Convention Center in Willowbrook Illinois."
More info here...
http://chicago.craigslist.org/wcl/clt/1829007992.html
http://www.antique-radios.org/