HF Antenna Collections -1

 

Rockloop & Loop‑Style HF Antennas

Antenna – Rockloop HF Antenna for 10,15,20 metre ham bands
The Rockloop is a compact multi‑turn HF loop aimed at 10, 15 and 20 metres, built from readily available tubing and a variable capacitor. It offers good efficiency from very small spaces with strong rejection of local noise, making it ideal for urban operators. The article walks through dimensions, mounting options and tuning methods so you can replicate the results.

Antenna – Foldaway Loop Antenna
This foldaway loop is designed for hams who travel or operate portable but still want serious HF capability. The loop collapses flat for storage yet can be deployed quickly in hotel rooms, balconies or rentals. The build covers mechanical hinges, conductor layout and tuning, showing how to achieve multiband coverage while keeping the antenna visually discreet.

Terminated Mini Loop Antenna: Small Space Ham Radio Antenna
The terminated mini loop trades raw efficiency for broadband coverage and low noise in very restricted spaces. Using a resistive load and compact loop, it covers a wide swath of HF without retuning, which suits SDR monitoring and casual HF listening in noisy apartments. The article details component choices, impedance matching and measured performance.

Loaded Loop Antenna – A Practical Balcony HF Solution
This loaded loop wraps an HF radiator around a balcony perimeter, using inductive loading to fit several bands into a compact rectangle. It’s aimed at operators with strict space or visual constraints, but who still want voice and digital contacts. The build shows mechanical mounting tricks, loading‑coil design and SWR results achieved from a real apartment installation.

HF Delta Loop Antenna
The HF delta loop is a full‑wave wire loop arranged in a triangular shape for improved low‑angle radiation and reduced noise pickup. It can be fed for different polarizations and offers a noticeable improvement over simple dipoles for DX work. The article explains dimensions, feed‑point options, matching techniques and real on‑air comparison results.

Aperiodic Multiband Wire Antenna: A Simple and Effective Design
This aperiodic multiband antenna is a non‑resonant HF wire using resistive termination and a broadband transformer for wideband coverage. It is ideal for SDR spectrum monitoring, utility listening and multi‑service monitoring where convenience trumps efficiency. The write‑up explains design theory, construction, measured return loss and when this approach beats traditional resonant wires.