The Vigo-Val Miñor Amateur Radio Union from Spain is organizing a historic special event station to commemorate the 114th anniversary of the RMS Titanic tragedy and honor its heroic telegraph operators.
Tag: CW
CW (Morse code) transmitter, transceiver, and QRP radio projects including HF CW circuits, homebrew rigs, and amateur radio construction guides
Reverse Beacon Network: The Ultimate Guide for Ham Radio Operators
The Reverse Beacon Network represents one of the most significant technological advances in amateur radio during the past two decades. By providing instant, objective feedback about your transmissions, the system empowers operators to understand their stations better, optimize their performance, and make informed decisions about when and where to operate. Whether you are testing a new antenna, chasing DX, competing in contests, or simply exploring the bands, the RBN adds a dimension of awareness that was previously impossible.
Mighty Mite 5W Crystal Controlled QRP CW Transmitter
The Mighty Mite 40 Meter QRP CW Transmitter is a legendary low-power Morse code transmitter widely built by amateur radio operators for portable, minimalist, and educational operation.
Building Sovina 40M Class E CW Transmitter with BS170 MOSFETs
Build the Sovina 40 m Class-E CW transmitter using BS170 MOSFETs and 74HC02 logic for efficient 7 MHz QRP operation. High-efficiency switching PA delivers 4–7 W output with clean RF and simple crystal-controlled design for homebrew HF rigs.
Mosquito TRX: Single-MOSFET 40-Meter (7030 kHz) CW Transceiver
Mosquito TRX is a single-MOSFET 40 m CW transceiver for 7030 kHz using crystal control and direct-conversion reception — an ultra-simple QRP rig and SDR front-end for sound-card radios
Curumim Transceiver – World’s Smallest QRP CW Transceiver
Discover the Curumim Transceiver, an ultra-minimalist QRP CW rig for 7.030 MHz that combines a single-transistor crystal oscillator and LM386 audio amplifier into one of the world’s smallest working HF transceivers, ideal for homebrewers, educators, and portable CW enthusiasts
Simple UJT Morse Code Practice Oscillator Circuit
Learn to build a simple UJT Morse code practice oscillator with basic components. Perfect beginner electronics project for ham radio enthusiasts.
Build a Simple 40 Metre CW Transmitter Using 2N2222
Build a simple 40 m CW transmitter using a 2N2222 and 7 MHz crystal oscillator — a minimalist QRP design with keyed oscillator and low-pass filter for clean HF Morse transmission.
80 meter 1W QRP Transmitter with Ceramic Resonator Control
Simple 80 m CW transmitter using a 3.58 MHz ceramic resonator for frequency stability and MOSFET power stage — ideal first HF QRP build for beginners
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