
            QST ARTICLE BIBLIOGRAPHY - Filters, audio

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1978 April     QST                                     p. 14
               The State-Variable Filter

     June      QST                                     p. 30
               The ABC Active Filter

     December  QST                                     p. 35
               The Club Filter (cw af filter)

1979 January   QST                                     p. 42
               The CW Filter-Limiter

     April     QST                                     p. 15
               A Simple CW Audio Filter

1980 July      QST                                     p. 17
               Active Filters

     September QST                                     p. 29
               What is a Filter?

     December  QST                                     p. 14
               Modern Design of a CW Filter Using 88-
               and 44-mH Surplus Inductors

1981 October   QST                                     p. 38
               Beating Rotten QRM - CW Filtering for
               the Beginner

1982 February  QST                                     p. 18
               Build an Audio Filter with Pizazz       5 pages

     April     QST                                     p. 33
               Concept and Construction of a CW Filter 4 pages
               and Enhancer

1983 April     QST                                     p. 32
               A Dichotic Detector for CW              3 pages

               QST                                     p. 35
               An Electro-Acoustic CW Filter           4 pages

               QST                                     p. 45
               Understanding and Using Audio Filters   4 pages

     October   QST                                     p. 14
               A Tunable CW Filter                     3 pages




1984 March     QST                                     p. 19
               Switched Capacitor Filters - An         7 pages
               Engineering Technology for Amateur
               Radio Use

     July      QST                                     p. 11
               Digital Switched-Capacitor Filters -    5 pages
               A Practical Construction Project

1985 April     QST                                     p. 23
               A High Performance CW Demodulator       5 pages

1986 February  QST                                     p. 15
               A Simple Effective Receiving Aid        5 pages
               (Stereo audio filter)

     April     QST                                     p. 13
               SuperSCAF and Son - a Pair of Swithed-  7 pages
               Capacitor Audio Filters

     December  QST                                     p. 32
               Digital Signal Processing - A Modern    8 pages
               Audio Filter

1992 October   QST                                     p. 27
               An Active Audio CW Filter You Can Build 

1993 May       QST                                     p. 62
               Do You Need an Audio Filter?


