1978 May       QST                                     p. 29
               Sunspots and the HW-16

     October   QST                                     p. 20
               A 25-kHz Calibrator for the HW-8

1979 February  QST                                     p. 20
               Upgrading Your Heath SB-220 Linear
               Amplifier

     April     QST                                     p. 18
               Putting the Boots to Your HW-8 QRP
               Transceiver

     June      QST                                     p. 17
               An LED Readout for the HW-2036

     August    QST                                     p. 28
               Improving the SB-104A/SB-644A

     September QST                                     p. 17
               The Low-Bander's Special

1980 January   QST                                     p. 16
               Adding Receiver Incremental Tuning to
               the HW-104 or SB-104 Transceiver

               QST                                     p. 25
               All Solid-State QSK for the Heath SB-220

     October   QST                                     p. 25
               External Paddles for the Heath HD-1410
               Keyer

1984 November  QST                                     p. 28
               The Smith Chart in Basic                4 pages

1987 September QST                                     p. 43
               DX60B Switch Replacement (Tech. Cor.)   1 page

     November  QST                                     p. 33
               Putting the Heath SB-200 on 160 Meters  3 pages

1988 April     QST                                     p. 26
               Improving the HW-9 Transceiver

1990 November  QST                                     p. 25
               Circuit Improvements for the Heath SB-220
               Amplifier--Part 1

     December  QST                                     p. 41
               Circuit Improvements for the Heath SB-220
               Amplifier--Part 2