Here's a live Realaudio feed of the Cal-Net repeater system in California.
You may have to start RealPlayer first and then plug that URL into it to get it going.
Heavy morning and evening use daily, nets are Wednesday night at 8:00pm Pacific (0400 UTC). Other times, it may be quiet for quite a while.
Their website is http://www.cal-net.org
, and their repeaters cover most of California so you're going to hear people spread out over a wide area.