1980

• High S.W.R. protection for transceivers and amplifiers

1987

• How to build a simple SWR bridge
• RFI and computers in the shack
• A new twist for the HF J-pole antenna
• A lightning protection system for your shack

1989

• The spark zapper

1990

• Low-band verticals and how to feed them
• A transverter for 10.368 MHz

1991

• The practical aspects of VFO design