1978

• Slim Jim 2 metre aerial

1986

• PW "Arun" parametric filter
• Restoration of old valve receivers

1987

• The Microwave MESFET 1

1988

• Practical antenna electrometer

1989

• A Two-tone Oscillator
• Designing passive attenuator networks

1990

• The HEMT - A very high performance microwave device
• Receiver sensitivity signal and noise
• Receiver front-end limitations

1991

• High voltage regulated PSU
• The PW Chatterbox 1
• The PW Chatterbox 2

1993

• Making a valved active antenna
• VLF Up-Converter
• Coils, the basic building block
• Propagation logging

1994

• A valved transmitter for 3.5 MHz

1995

• External noise vs receiver sensitivity

2003

• A Practical Antenna Electrometer