1978 May QST p. 11 A Modular Control Unit December QST p. 41 Give Your Repeater Some Identity 1979 February QST p. A First-Class Touch-Tone Encoder Feedback; May 1979 March QST p. 16 A CMOS Control Circuit for Repeaters April QST p. 11 A Low-Cost PC-Board Duplexer November QST p. 38 Build a Ragchew Clipper December QST p. 31 Compatible RTTY (FM repeater) 1980 February QST p. 18 An Automatic CW Identifier March QST p. A Universal Touch-Tone Decoder April QST p. 31 A Portable 2-Meter Repeater for Emergency Communications June QST p. 16 A Telephone-Line Repeater Control Device October QST p. 20 A CMOS Command Decoder for Repeaters and Remote Bases 1981 January QST p. The ARES Standard Tone-Alert System June QST p. 15 Mnemonic Encoder - Let's You Know What Your Repeater is Up To. October QST p. 25 Phone-Line Interface - Do It Solid-State Style December QST p. 42 Digital Frequency Filter for Repeater Inputs 1982 January QST p. 25 The DTMF "Easy-Ceiver" June QST p. 20 Not Just Another Decoder 4 pages 1983 NOvember QST p. 16 The DTMF Easy Controller - With 6 pages Security December QST p. 26 The Microcomputer Repeater Controller 6 pages 1984 May QST p. The Nearly Ultimate Decoder 1988 February QST p. 19 Professional Quality DTMF and Selcal 4 pages System July QST p. 32 A Multi-purpose DTMF Encoder 1989 December QST p. 22 A Repeater-Linking Controller 1990 May QST p. 22 An Audio Equalizer for Communications Use