Practical guide to receiving HF weather fax WEFAX / Radiofax

Practical guide to receiving HF weather fax WEFAX / Radiofax: Learn how to receive HF Weather Fax (WEFAX) images using SDR or shortwave radios. Step-by-step guide for radio amateurs with frequencies, software tools,

Baofeng UV-5R Mini: Compact Dual-Band Powerhouse

Baofeng UV-5R Mini: Compact Dual-Band Powerhouse: A technical review of the Baofeng UV-5R Mini. 5W output, Bluetooth programming, and "FT2" digital mode experiment. Is it the new speed king of ultra-portables?

Setting Up SSTV with HF SSB Transceivers: A Comprehensive Guide

Setting Up SSTV with HF SSB Transceivers: A Comprehensive Guide: Master SSTV setup with uBITX/sBITX transceivers. Audio interfacing, PTT control, software config, troubleshooting. MMSSTV, QSSTV guides included.

UR0GT Broadband Avia Antenna (RW4HVN Mod): The Ultimate Wideband VHF Antenna Guide

UR0GT Broadband Avia Antenna (RW4HVN Mod): The Ultimate Wideband VHF Antenna Guide: Detailed guide to building UR0GT Broadband Avia Antenna modified by RW4HVN. Covers dimensions, design principles, SWR performance, construction details

Radio Waves Weekly — Issue #003

Radio Waves Weekly — Issue #003: Sunday, February 08, 2026 Welcome to the third edition of our weekly digest! We are tracking the peak of Solar Cycle 25 and highlighting some incredible local and global engineering projects. 🔝 Top Links of the Week 1. ARRL Becomes Supporting Partner for America250 The ARRL has officially joined "America250" to celebrate the 250th anniversary

Getting Started with FreeDV: A Beginner’s Guide to Digital Voice on Amateur Radio

Getting Started with FreeDV: A Beginner’s Guide to Digital Voice on Amateur Radio: Learn FreeDV digital voice for amateur radio. Beginner's guide covers setup, equipment, modes, and making your first contact using open-source software.

If you’re an amateur radio operator looking to explore digital voice modes beyond the usual FM repeaters, FreeDV offers an exciting opportunity to experiment with open-source digital communication. This guide will help you understand what FreeDV is, why it matters, and how to get started with this fascinating mode.

Building Sovina 40M Class E CW Transmitter with BS170 MOSFETs

Building Sovina 40M Class E CW Transmitter with BS170 MOSFETs: High-efficiency 40M CW Class-E CW transmitter using BS170 MOSFETs and 74HC02. Complete circuit explanation and build notes for QRP hams.

The Sovina 40m Class-E CW Transmitter is a compact and highly efficient HF CW transmitter designed for amateur radio operators who enjoy homebrew QRP equipment. This circuit is based on the original work by PY2OHH (Roberto S. Soria) and has become popular due to its simplicity, excellent efficiency, and clean RF output.