Building a Simple 2N2222 DSB Transmitter for Amateur Radio
This compact crystal-controlled DSB transmitter combines a 2N2222 oscillator, diode balanced modulator, and tuned RF…
Circuits
QRP
Transmitter
News
radio
Reception
SDR
ATS Mini Firmware Now Supports LILYGO T-Embed SI4732
The ATS Mini firmware v2.34 now includes experimental support for the LILYGO T-Embed SI4732 receiver.…
Antenna
VHF/UHF
Build a 3-Element Directional Slim Jim Antenna for 2-Meters
Tired of wasting signal in every direction? This directional Slim Jim antenna design combines the…
Antenna
HF
Shortened EFHW Antenna for 80m to 10m
This shortened EFHW antenna covers 80m through 10m using a 49:1 transformer, 110µH loading coil,…
Antenna
VHF/UHF
Understanding the VHF Slingshot Antenna: A Smart VHF Solution
The VHF slingshot antenna is a compact and efficient design ideal for reliable signal transmission…
Antenna
HF
3-Band HF Antenna: A Simple, High-Performance Design
Discover how to build a reliable 3-band antenna for 40m, 20m, and 10m. This simplified…
Antenna
HF
Multiband City Windom Antenna — A Practical End-Fed HF Antenna for City Operators
The Multiband City Windom is a compact, end-fed wire antenna purpose-built for urban amateur radio…
Digital modes
QRP
SDR
The zBitx v2 Migration: Community Fixes for v1 Hardware Owners
The zBitx v2 update introduces a high-performance Wi-Fi architecture and fixes receiver "chuffing," but v1…
News
Radio Waves Weekly
Radio Waves Weekly — Issue #014
Welcome to Radio Waves Weekly — Issue #014! This week the focus shifts to the bench and…
Digital modes
DIY
Guide
VHF/UHF
Mastering Meshtastic on the 70cm Amateur Band (433 MHz)
Shifting Meshtastic to the 433 MHz amateur band offers superior range and higher power limits.…