At 12:18 PM 7/11/01 -0500, Jim wrote: >The final RF stage (in this case) is operated class C and >the collector (or plate) supply (Vcc or B+) is "modulated" - a >process called "high-level modulation". > >Any succeding stages, however, must be LINEAR in >nature and therefore cannot be "class C" stages ... Ah.. Variable power supply. Interesting approach, I bet it has some interesting kinks, as the transistor's parameters change over applied VCE. You could also call it PAM I guess. As an aside, why are we hams so stuck on 12V and 50 ohms? 48V and 75 ohms look a lot better to me. -- Dave's Engineering Page: http://www.dvanhorn.org I would have a link to http://www.findu.com/cgi-bin/find.cgi?KC6ETE-9 here in my signature line, but due to the inability of sysadmins at TELOCITY to differentiate a signature line from the text of an email, I am forbidden to have it. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads