Electron wrote: > Does anybody have a bode plot of the "frequency response" of that nasty filter > called atmosphere? 8) > > This might do http://fuse.pha.jhu.edu/~wpb/spectroscopy/atm_trans.html Jim -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist