In a message dated 6/30/2006 9:28:14 P.M. Eastern Standard Time, r at somis.org writes: Hal -- A good aid to digestion is G. W. Fyler's article: ''Parasites in Transmitters'', Institute of Radio Engineers Journal. Sept. 1935. end > Hasn't anybody re-written anything on this since 1935? Even the bible has a "new" testament. Lou