Master the 80m–10m bands with the classic W3DZZ trapped dipole. This guide explores the technical design, trap construction, and real-world SWR performance of this legendary multi-band antenna. Perfect for hams seeking a compact, high-performance HF solution without a complex tuner
94-Foot Multi Band Doublet Antenna – Simple All-Band HF Wire antenna
If you could only ever hang one wire in your backyard for the rest of your life, the 94-foot Doublet would likely be it. Often called the “all-bander’s dream,” this specific length is a classic in the Amateur Radio world for a reason: it’s short enough to fit in most yards, yet long enough to be highly efficient on the 80-meter band.
Unlike a standard dipole that’s stuck on one frequency, the Doublet uses balanced ladder line to turn your entire feed system into part of the antenna. In this guide, we’ll look at why the 94-foot length is the “sweet spot” for multiband performance and how to properly interface it with your tuner. Forget complex traps and multiple dipoles—one wire can truly do it all. Let’s get that ladder line hanging!
Mini Radio Pocket SI4735 Dual Core – Latest Firmware Update Brings EiBi Extensions & Power Saving Mode
Upgrade your Mini Radio Pocket SI4735 experience! The new firmware adds EiBi transmitter data and an eco-friendly power-saving mode for longer listening sessions.
sBitx v5.3: A Detailed Look at the New Software Release
sBitx v5.3 software update brings a touch-optimized UI, advanced FT8/FT4 automation, xOTA logging, CW decoding upgrades, and SWR protection — enhancing the Linux SDR transceiver platform.
A Compact 4-Meter Vertical Antenna for the 80-Meter Band
Build a compact 4-meter vertical antenna for the 80-meter band. This DIY guide features a high-efficiency loading coil design and a top-hat capacity spoke system to make 80m operation possible in small yards and restricted spaces
Radio Waves Weekly — Issue #002
Sunday, February 01, 2026 Welcome to Issue #002! This week is packed with massive breakthroughs in open-source SDR, “Make in India” military radio news, and some very clever DIY projects for your weekend shack time. 🔝 Top Links of the Week Open.Space: Open Source SDR Phased Array for Moon Bouncing This is a game-changer. An […]
Near Vertical Incidence Skywave (NVIS): The Definitive Guide to Reliable Regional HF Radio
This article will give you a complete understanding of NVIS propagation. With the level of technical expertise and detail found in this article, this guide is intended for the amateur radio operator who wants to go beyond the theory and learn the details of NVIS antenna design and operations.
Extended Lazy-H Antenna: A Classic Multiband Wire Design from QST
The Extended Lazy-H antenna is one of amateur radio’s classic wire antenna designs, combining simplicity with reliable multiband performance. First published in the October 1955 issue of QST magazine, this antenna was intended to provide efficient HF operation using balanced construction and open-wire feed line.
Half Loop Antenna for 80, 40, 20, and 15 Meter Ham Radio Bands
Can’t fit a full-sized 80-meter dipole in your backyard? Or maybe you’re tired of the high noise floor of a vertical? It’s time to look at the Half-Loop. This “open-loop” design provides a fantastic balance between the quiet reception of a loop and the simplicity of a wire antenna.
In this project, we explore a multiband Half-Loop configuration that covers everything from 80 meters down to 15 meters. We’ll discuss the radiation pattern, the importance of a good ground or counterpoise, and how to use a simple tuner to jump between bands. If you’re looking for a “stealthy” antenna that punches above its weight on the low bands, this build is for you. Let’s get that wire in the air!
ADSBee 1090: An Open-Source ADS-B Receiver Built for Modern Aviation Tracking
ADSBee 1090 is an open-source ADS-B receiver that decodes 1090 MHz aircraft transponder signals using RP2040 PIO — a low-power standalone aviation tracker with Wi-Fi data streaming.

