12-07-2008, 08:00 PM
That is strange. As Ron noted, some stations seem to have this on their audio. What's even stranger for me, is one radio may have, yet another doesn't show it. But as soon as the program changes, the hum is gone. 800 CKLW is noted for this in my area.
-Brian
If you collect or are interested in antique telephones, please visit Classic Rotary Phones
http://www.classicrotaryphones.com/forum/index.php