Jason, If you looking for basic RF design, you might find useful the Amateur Radio Relay League (ARRL) book, "Experimental Methods in RF Design" by Wes Hayward, et al. I It's a getting a bit dated but It will take you from direct conversion to advanced super heterodyne receivers. Tony > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .