The W8JI Super Mini Loop antenna is a compact full-wave loop design that delivers multi-band HF performance. Learn how it works, why it’s efficient, and how to build and optimize it for your stati
Tag: multiband HF antenna
The Half Square Antenna: Low-Profile DX Wire for HF Bands
The Half Square has been quietly delivering low-angle DX gain to operators who know about it, while remaining invisible to everyone else — including curious neighbours. Shaped like the Greek letter π, it uses two quarter-wave verticals fed in phase through a half-wave horizontal section, matches directly to 50-ohm coax without a tuner, needs no radials, and can beat an Inverted-V by 4 dB toward the horizon. Here is everything you need to build one
Low-Loss Feedline on a Budget: Building 450 to 600 Ohm DIY Ladder Line from Common Materials
If you are running a multiband doublet or any antenna with a tuner, ladder line will outperform coax on almost every band. Here is how to build your own from scratch — four proven designs, common materials, and every practical detail from spacer drilling to routing it through the shack wall.
Fan Dipole Antenna: Two Bands, One Feedline, Zero Compromises
Learn how a fan dipole (parallel dipole) antenna lets you operate on two HF bands from a single feedline with no tuner. Includes the 468 formula, component breakdown, band pairing tips, and step-by-step building guide
Aperiodic Multiband Wire Antenna: A Simple and Effective Design
Aperiodic multiband wire antenna design by HB9KX/DK7ZB: 10.5 m asymmetrical dipole with resistive loading for broadband HF coverage without complex tuning