1980 November  QST                                     p. 15
               Spread-Spectrum and the Radio Amateur

1983 July      QST                                     p. 14
               Spread-Spectrum Applications in Amateur 6 pages

1986 June      QST                                     p. 42
               Spread Spectrum: Frequency Hopping,     2 pages
               Direct Sequence and You

1987 July      QEX                                     p. 16
               Intellectual Properties (spread spec.)  2 pages

     October   QEX                                     p. 5
               Extracting Stable Clock Signals from AM 5 pages
               Broadcast Carriers for Amateur Spread-
               Spectrum Applications

1989 May       QST                                     p. 14
               A Practical Direct-Sequence Spread-Spectrum
               UHF Link