----- Original Message ----- From: "Jim" To: Sent: Monday, February 11, 2002 12:43 PM Subject: Re: [pic]: Can you amplify with a single 2n2222 ?? ... > As to where RF begins - that's easy. Does it involve > 'radio frequencies' and the technologies classically > employed to modulate, amplify, detect, filter, > demodulate or radiate EM energy as opposed to 'audio > frequencies' which have in past decades normally > 'modulated' an RF carrier in order to transmit > intelligence though the ether from point A to point > B? Audio is ELF. An audio-frequency circuit still radiates electromagnetic waves, just not very efficiently. > > I'm afraid today's 'digi-head' has blurred all > distinction between the two ... The boundary _is_ very fuzzy, but most animals can't hear beyond about 200kHz... /\/\/\/*=Martin -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads