Table of Contents
Chapter 1: A medium-wave receiver
Chapter 2: An audio-frequency amplifier
Chapter 3: A medium-wave receiver using a ferrite-rod aerial
Chapter 4: A simple electronic organ
Chapter 5: Experiments with the NE555 timer
Chapter 7: What is a resistor?
All waves are described in the same way
Chapter 9: A beat-frequency oscillator
Chapter 10: What is a capacitor?
Chapter 15: An aerial tuning unit for receiver
Chapter 16: A simple 2 m receiver preamplifier
Chapter 17: Receiving aerials for amateur radio
Chapter 18: The Colt 80 m receiver – Part 1
Chapter 19: A crystal radio receiver
Chapter 20: The varactor (or varicap) diode
Chapter 21: A portable radio for medium waves
Chapter 22: The Colt 80 m receiver – Part 2
Chapter 23: A simple transistor tester
Chapter 24: An introduction to transmitters
Measuring the resonant frequency
Chapter 25: The Colt 80 m receiver – Part 3
Chapter 26: A two-way Morse practice system
Chapter 27: The Colt 80 m receiver – Part 4
Chapter 28: A simple crystal set
Chapter 29: A crystal calibrator
Chapter 30: A simple short-wave receiver – Part 1
Chapter 31: A fruit-powered medium-wave radio
Chapter 32: A capacitance bridge
Chapter 33: A simple short-wave receiver – Part 2
Chapter 34: A basic continuity tester
Chapter 35: A charger for NiCad batteries
Charging NiCads – the ampère-hour
Constant voltage to constant current
The full circuit and its assembly
Chapter 36: An 80 metre crystal-controlled CW transmitter
Chapter 37: A solar-powered MW radio
Chapter 38: A receiver for the 7 MHz amateur band
The circuit and its construction
Chapter 39: Diodes for protection
Chapter 40: An RF signal probe
Chapter 41: An RF changeover circuit
Chapter 42: A low-light indicator
Chapter 43: A J-pole aerial for 50 MHz
Chapter 44: Measuring light intensity – the photometer
Chapter 45: A 70 cm Quad loop aerial
Chapter 46: A UHF field strength meter
Using the field strength meter
Chapter 47: Christmas tree LEDs
Chapter 48: An audio signal injector
Chapter 50: A standing-wave indicator for HF
Chapter 53: A breadboard 80 m CW transmitter
Chapter 54: A 7-element low-pass filter for transmitters
A design of 7-element low-pass filter
Chapter 55: Radio-frequency mixing explained
RF mixers and beat frequencies
Chapter 56: A voltage monitor for a 12 V power supply
Chapter 57: A 1750 Hz toneburst for repeater access
Chapter 58: A circuit for flashing LEDs
Chapter 59: Digital logic circuits
Chapter 60: A resistive SWR indicator
Chapter 61: An audio filter for CW
Chapter 63: The absorption wavemeter
Chapter 64: An HF absorption wavemeter
Chapter 65: A vertical aerial for 70 cm
Chapter 66: A UHF corner reflector aerial
Chapter 67: A switched dummy load
Chapter 68: A simple Morse oscillator
Chapter 69: A bipolar transistor tester
Chapter 70: The ‘Yearling’ 20 m receiver
Chapter 71: Adding the 80 metre band to the Yearling receiver
The RSGB news broadcasts, GB2RS – Sunday mornings
Chapter 72: How the Yearling works
Intermediate frequency (IF) filter
Variable-frequency oscillator (VFO)
Chapter 73: A field strength meter
Chapter 74: Preselector for a short-wave receiver
Chapter 75: An audible continuity tester
Chapter 76: An experimental 70 cm rhombic aerial
Chapter 78: A delta loop for 20 metres
Chapter 79: A simple desk microphone
Chapter 82: An integrated-circuit amplifier
Chapter 84: CW QRP transmitter for 80 metres
Chapter 85: An audio booster for your hand-held
Chapter 86: A grid dip oscillator
Chapter 87: A CW transmitter for 160 to 20 metres