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)

Almost solderless crystal set (video)

Variable inductor crystal set drives a speaker (video)

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)

12 part AM radio drives a speaker (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

Building and testing a no coils AM radio (video)

Experimenting with the BK1198 receiver IC (Digitech AR1458 conversion)

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)

One transistor direct conversion reflex receiver concept - refined (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

Ring modulators and Dalek kits for voice scrambling, shifting and sideband inversion

Binaural and phasing SSB receiver experiments

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)

27 MHz to 3 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

What can you hear on a VHF 'crystal set'? (video)

Portable VHF superregen receiver (video)

144 MHz to VHF airband receiving converter (video)

Taming a 144 MHz direct conversion receiver (video)

TV tuner VHF receiver - Part 1 (video)
TV tuner VHF receiver - Part 2 (video)
TV tuner VHF receiver - Part 3 (video)

Glass CW audio filter (video)

 

3. Transmitting projects

Very low power broadcast 'AM' with 2 transistors (video)

Low power broadcast MF FM with 3 transistors (video)

Micropwer FM broadcast transmitter with pins and wood (video)

1000km range with a 3.5 MHz crystal oscillator module transmitter? (video)

Frequency agile 3.5 MHz CW transmitter

3.5 MHz DSB transmitter

Review of and improvements to the Pixie QRP CW transceiver

A page of super simple 1 & 2 transistor 3.5 & 7 MHz CW transmitters

Your first radio transmitter you built yourself - no soldering (video)

Your first radio transmitter can now talk (video)

'Tiny Toy' 7 MHz CW transceiver (video)

'Bigger Toy' 7 MHz CW transceiver (video)

7 MHz ceramic resonator CW transmitter - receiver (video)

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

7 MHz frequency agile 2 transistor FM exciter (video)

Badly behaved 7 MHz frequency agile 4 transistor FM exciter (video)

7 MHz FT8/JS8 direct conversion DSB transceiver

Diodes as DSB transmitter finals (high level balanced modulator)

'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

Wide-swing variable crystal oscillator

Tinkerings with DDS VFOs

 

4. Accessory and test equipment projects

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

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

Automatic CW CQ caller using an Arduino (video)

Utility discrete transistor audio amplifier

Signal strength meter uses LM386 IC (video)

Antenna couplers galore!

Audible antenna coupler adjustment indicator

Squeakie audible RF field strength meter (video)

QRP power meter

Tweak your RF power meter - here's how (video)

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

Getting simple DSB transceivers to talk to one another (video)

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

Ham Radio Get Started (USA)

Australian Ham Radio Handbook (Aust)

Hand-carried QRP Antennas

More Hand-carried QRP Antennas

99 things you can do with Amateur Radio

Getting back into Amateur Radio

Minimum QRP

Illustrated International Ham Radio Dictionary

Make your Passion Pay (ebook writing)

 

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