Build the Commando AM transmitter — a crystal-controlled three-transistor AM circuit with oscillator, buffer, and RF power stages delivering stable modulation for HF experimentation
DIY
“DIY” on DXR Electronics Bits is where practical ham radio projects come to life. Here you’ll find buildable circuits, antennas, receivers, preamps, audio tools, and experimental rigs designed for real‑world shack and field use. From compact HF antennas for small spaces to regenerative receivers, QRP transmitters, and uBITX add‑ons, each article focuses on parts you can actually source and solder on the bench.
ATS Mini Radio Wi-Fi Configuration for Automatic EiBi Schedule Updates
Optimise your ATS Mini Radio Wi-Fi, Learn to configure Wi-Fi & download the EiBi shortwave schedule for effortless, updated shortwave listening.
TL081 Speech Processor for HF Rigs
The main goal of TL081 Speech Processor circuit is to boost, shape and process your voice signal before sending it to the radio transmitter
Build Your Own 80M CW Transmitter from Scratch
Learn to build a simple 80M CW transmitter with crystal oscillator and parallel power amplifier. Complete circuit guide for amateur radio enthusiasts
Build Your Own Grenade AM Transmitter Circuit: A Complete Guide
The Grenade AM transmitter is a fascinating DIY electronics project that combines simplicity with effective radio frequency transmission.
Build Your Own 40M AM Transmitter: A Classic Radio Project
This blog post delves into the construction of a 40M AM transmitter. Perfect for hobbyists offers a fantastic hands-on experience with RF electronics.
Mini FM Radio Transmitter
Have you ever wanted to broadcast your voice, even just a little bit? Well, now you can! This circuit diagram shows you how to build a simple FM Radio Transmitter . It’s a fun project, and it uses only a few basic parts.
Building a Classic Untuned Field Strength Meter
Radio frequency work can be tricky business, especially when you need to measure signal strength without the complexity of tuned circuits. Enter the untuned field strength meter (FSM) a simple effective tool that every electronics enthusiast should have in their toolkit.
The Poor-Man’s Transmitter: Building a Simple AM Radio Beacon from Vintage Electronics
The Poor-Man’s Transmitter: Building a Simple AM Radio Beacon from Vintage Electronics, uses a clever arrangement of 4011 CMOS gates to create AM Radio Beacon
Building a Crystal-Controlled CMOS Oscillator: A Classic Circuit for Precise Timing
When you need accurate, stable frequency generation for digital circuits, few solutions are as elegant and cost-effective as a crystal-controlled CMOS oscillator. This classic circuit design demonstrates how a simple TV color crystal can be transformed into a versatile frequency source for various applications. At the heart of this circuit lies an inexpensive 3.58 MHz […]