CurtZHP Well-known member Joined Mar 21, 2005 Messages 634 Location Allentown, PA Oct 16, 2013 #1 http://radioworld.com/article/curt%E2%80%99s-gyraf-audio-g-tube-mic-project/221879
emrr Well-known member Joined Apr 12, 2006 Messages 8,536 Location NC, USA Oct 16, 2013 #2 Yep http://groupdiy.com/index.php?topic=53821.msg687225#msg687225
shabtek Well-known member Joined Jun 8, 2005 Messages 2,379 Location midwest usa Oct 17, 2013 #3 wow--this will renew interest in diy. good stuff!