VK3YE amateur radio pages

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VK3YE Radio Books

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Amateur radio projects

 

1. Start here

Tutorials, technical & design - Lots on the basics here

What's radio construction about and how to get started

Parts needed for electronics and radio construction

The four pieces of radio test equipment you really need

Building projects from the schematic diagram - A one transistor crystal oscillator

Introducing the Pixie Hack Challenge

 

2. Receiving projects

Induction loop audio receiver (video)

A simple crystal set (and Q multiplier)

Novel crystal set requires no antenna, earth

An electret microphone crystal set (video)

Crystal set with high gain TL431 audio amplifier (video)

All bands at once portable AM receiver (video)

Regenerative AM receiver

Thousand hour AM receiver (video)

One valve regenerative receiver operates from 12 volts HT video 1 video 2

Converting an AM broadcast receiver to hear 160 metres

Simple 3 - 23 MHz HF regenerative receiver (video)

Experiments with ceramic resonator regenerative receivers

3.5 MHz direct conversion receiver

3.5 MHz superhet receiver

Super simple 7 MHz receiver and notes on RF breakthrough (video)

One transistor direct conversion reflex receiver concept (video)

Demonstration of a chopping board HF receiver as described in Sprat (video)

Starting in simple software defined radio

Simple FT8 and JS8 direct conversion receivers NEW!

Fun with ring modulators for inverted SSB reception (video)

Binaural and phasing SSB receiver experiments NEW!

Hear Amateurs on your shortwave radio (BFO)

LF to HF converter

High quality AM through your FM stereo

Hear Amateurs on your FM radio

Car radio tunes the amateur bands

1.8 MHz to 27 MHz receiving converter (video)

7 MHz to 27 MHz receiving converter (video)

Superregenerative receivers for the FM broadcast band

70 MHz to 50 MHz receiving converter (video)

50 MHz to 146 MHz converter

144 MHz to VHF airband receiving converter (video)

Taming a 144 MHz direct conversion receiver (video)

Glass CW audio filter (video)

 

3. Transmitting projects

Frequency agile 3.5 MHz CW transmitter

3.5 MHz DSB transmitter

Review of and improvements to the Pixie QRP CW transceiver

Hand-powered 7 MHz CW transmitter (video)

'Tiny Toy' 7 MHz CW transceiver (video)

'Bigger Toy' 7 MHz CW transceiver (video)

7 MHz ceramic resonator CW transmitter - receiver (video)

7 MHz cheap and chirpy CW transmitter NEW!

Very simple 7 MHz AM transmitter using TL431 audio amplifier (video)

7 MHz frequency agile 2 transistor FM exciter (video)

7 MHz FT8/JS8 direct conversion DSB transceiver NEW!

Diodes as DSB transmitter finals (high level balanced modulator) NEW!

'Micro 40' 7 MHz DSB transceiver

'Beach 40' 7 MHz DSB transceiver

'Knobless Wonder' single channel 7 MHz SSB transceiver

Tips and tricks for the Bitx SSB transceiver

Tips and tricks for the uBitx SSB transceiver

Phasing SSB experiments

One Valve CW transmitter

Two Valve CW transmitter

Experiments with low power 27 MHz and VHF transmitters

Experiments with low power UHF transmitter modules

Tests with low power video transmitter circuits NEW!

Wide-swing variable crystal oscillator

Tinkerings with DDS VFOs

 

4. Accessory and test equipment projects

Quick laptop - transceiver interface cable for digital modes (video)

Automatic CW CQ caller using an Arduino (video)

Utility discrete transistor audio amplifier NEW!

Signal strength meter uses LM386 IC (video)

Antenna couplers galore!

Audible antenna coupler adjustment indicator NEW!

QRP power meter

Switchable 3.5 and 7 MHz QRP low pass filter (video)

RF actuated transmit indicator light for QRP rigs (video)

RF actuated CW monitor

Handheld transmitter and range testers

LED voltage indicator for under a dollar (video)

A two-way Morse practice set

Build a simple Morse keyer in 10 minutes (video)

Morse adaptor for your VHF/UHF FM rig

Simple test equipment to build

Measure UHF frequencies with wood, wire and nails (video)

Measure inductance with just two transistors (video)

Dip oscillator for HF

3 - 12 MHz Signal generator

CMOS IC audio oscillator

Dual tone audio oscillator

1A variable regulated power supply

An electronic stupidity meter (video)

 

5. Further information

See Tutorials, technical & design for more educational and experimental reading.

 

Books by VK3YE

 

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(c) Peter Parker VK3YE 1997 - 2020.

Material may not be reproduced
without permission.