I was wondering, what is the difference between a function generator and an RF signal generator, besides the frequency . Does it have ONLY to do with the higher frequency or something else such as the lack of waveforms besides an ordinary sine? Basically, I am looking to buy a Wavetek 2407 and want to make sure I am getting a piece of equipment that can put out an RF carrier sine wave without an input and without modulation. Thanks Matt Bajor -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist