40-10m OCF Antenna: A Simple, Multi-Band Wire Antenna
Learn how to build a simple and effective 40-10m Off-Center Fed (OCF) Dipole antenna. This…
Antenna
HF
Circuits
Simple FM Receiver with Audio Amplifier
This guide walks you through a simple FM receiver circuit built around a BF256 FET…
Antenna
Urban HF Antenna Problem: 5 Proven Builds for Small Rooftops
Five space-saving HF antennas for city hams: Mini G5RV, Shorty 4020, UA6CA Windom, Window Loop,…
Guide
QRP
FT8 vs FT4: Choosing the Right Digital Mode for Weak Signal Success
Struggling to choose between FT8 and FT4 for your weak-signal amateur radio operations? This article…
Articles
radio
Reception
ATS Mini Radio Gets SSTV & Weather Maps Image Decoding
The June 2026 firmware V4 turns your pocket ESP32-S3 / SI4732 receiver into a standalone…
Digital modes
HF
News
Hamilton Auto FT8: Complete FT8 Automation for the Modern Ham
Tired of repetitive mouse clicks during long FT8 sessions? Hamilton Auto FT8 takes over the…
Articles
News
PicoADSB Makes Flight Tracking Effortless
The PicoADSB redefines flight tracking. Weighing just 3 grams and smaller than a coin, this…
Antenna
HF
UA6CA Multiband Windom Antenna for 80, 40, 20 and 10 Meters
The Windom UA6CA antenna is a simple yet highly effective multiband HF antenna covering the…
Antenna
VHF/UHF
High-Gain 5/8 Wave Mobile Antenna for 145 MHz
Improve your VHF mobile setup with a homemade 5/8 λ antenna for 145 MHz. Using…
Circuits
HF
Transmitter
Build a 4-Pin Crystal Oscillator AM Transmitter
Ever wondered how old-school AM broadcasting works without complex multi-stage LC circuits? This technical deep-dive…