1. Outer Front Cover
2. Contents
3. Publisher's Letter: Most software is a product, not a service
4. Feature: All About Heat Pipes by Dr David Maddison
5. Feature: The History of Transistors, Pt3 by Ian Batty
6. Project: AM-FM DDS Signal Generator by Charles Kosina
7. Project: 500W Power Amplifier, Part 2 by John Clarke
8. Feature: Air Quality Sensors by Jim Rowe
9. Project: Slot Machine by Gianni Palotti
10. Serviceman's Log: Where there’s a weld, there’s a way by Dave Thompson
11. Project: Oatley LED Lighting & Driver Kits by John Clarke
12. Subscriptions
13. Vintage Radio: Calstan 559M2 superhet by Fred Lever
14. PartShop
15. Market Centre
16. Advertising Index
17. Notes & Errata: Dual Hybrid Power Supply, March 2022; Remote Control Range Extender, January 2022; Programmable Hybrid Lab Supply with WiFi, May & June 2021
18. Outer Back Cover

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