The essence of vintage radios, IMHO. Ill never forget the sounds that came out of the AR-3 my dad built and then was my novice receiver. The hams, of course, but the most vivid memories are of teletype -- the distinctive sound without the BFO turned on, or the sound of Russian Jamming. The Russian jamming always sounded to me like a wind band playing a long, sustained chord. In my 7 year-old mind I thought that that's what the "band" switch and the "band" tuning was talking about!