The ATS Mini firmware v2.34 now includes experimental support for the LILYGO T-Embed SI4732 receiver. Here is what the hardware does, how ATS Mini firmware works, and what this update means for radio hobbyists
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 low radiation angle of a traditional Slim Jim with the focused power of a Yagi. Using precise metric measurements, you can build a 2-meter powerhouse that provides high gain and excellent interference rejection for your station.
Shortened EFHW Antenna for 80m to 10m
This shortened EFHW antenna covers 80m through 10m using a 49:1 transformer, 110µH loading coil, and RF choke. Ideal for small spaces and portable HF setups, the design delivers low SWR, easy installation, and reliable multiband performance for amateur radio operators seeking a compact antenna solution.
Understanding the VHF Slingshot Antenna: A Smart VHF Solution
The VHF slingshot antenna is a compact and efficient design ideal for reliable signal transmission and reception. With a balanced structure and simple coaxial feed, it offers strong performance while remaining easy to build, making it a practical choice for hobbyists and radio enthusiasts working in the VHF frequency range.
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 DL1BU modification uses an asymmetrical dipole and a toroid balun to deliver exceptional SWR performance using standard coaxial cable for your amateur radio station.
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 operators. With a 26-metre radiating element, a 13-metre RG-58 feedline section, a 1:4 impedance transformer, and a common-mode choke, it delivers reliable multiband HF performance without demanding a complex ground system or an ATU on most bands.
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 owners face “white screen” and voltage hurdles. This guide covers the essential SD card setup, the 9V power requirement, touchscreen calibration tricks, and the critical Pico vs. Pico W hardware check for a successful upgrade
Radio Waves Weekly — Issue #014
Welcome to Radio Waves Weekly — Issue #014! This week the focus shifts to the bench and the junk box. Four homebrew and shack project archives worth bookmarking, two dual-band Yagi builds you can start this weekend, a compact balcony SDR station for under €150, and a practical beginner guide to getting your first signals on screen.
Mastering Meshtastic on the 70cm Amateur Band (433 MHz)
Shifting Meshtastic to the 433 MHz amateur band offers superior range and higher power limits. This deep-dive guide explores how licensed hams can legally build high-performance mesh networks while staying compliant with international radio regulations.
The zBitx v2 Has Arrived: Efficiency, Built-in EFHW, and a Wi-Fi Revolution
Ashhar Farhan has officially unveiled the zBitx v2, a significant leap forward for the compact SDR transceiver. With upgraded hardware including a passive FET mixer and a game-changing Wi-Fi-based front-panel connection, the v2 fixes legacy bugs while paving the way for custom user interfaces.