Pitman Publishing Ltd, 1975. — 120 p.
R.H. Warring also published by Tab books as "21 Simple Transistor Radios You Can Build: From Crystal Sets to Superhets".
Radio made easy!
The language of radio
Crystal sets
More about tuned circuits
Amplifiers
The output stage
Transistors, bias and stabilization
TRF receivers
Regenerative and reflex receivers
Superhets
Components
Circuit construction
FETs and ICs
Appendixes:
Broadcast frequencies
Suppliers