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Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.

A copper pipe Hentenna for 144 MHz. The Hentenna, a compact, high-gain loop antenna developed in Japan in the 1970s, offers approximately 5.1 dBd gain, comparable to a three-element Yagi. Adapted for 2 meters, it is crafted from copper pipe for simplicity, affordability, and broadband performance. Requiring no feed-point tuning, its construction involves soldering standard copper fittings. Installation demands non-conductive materials to minimize signal disruption. Versatile for vertical or horizontal polarization, it is ideal for FM, repeater, SSB, or CW applications. This design emphasizes practicality and performance for amateur radio enthusiasts

A magnetic loop made just of wire. Suitable for portable usage and for QRP operations.

Article on radiation patterns of small loops, equivalent circuits of loop antenna, small loops as receiving antennas, ferrite loops

A magnetic loop antenna calculator made with an excel sheet that run also with open office, let you design mag loop antenna dimensions by AA5TB

A delta loop antenna for 6 meters band with SWR diagram , construction plan and some pictures by IZ8EWD in Italian

A full size delta loop antenna for top band by PA3FUN

A Low -Power, Distributed Capacitance Twisted Loop , indoor portable HF antenna by Monty Northrup, N5ESE

This magnetic loop is 78cm diameter, with the smaller Hertz loop for tuning. Feeding is by gamma match.

Antenne Cadre Project by F5NGZ, description by F5TZA in french

Excel spreadsheet that help calculating dimensions of a high efficiency magnetic loop antenna for HF bands. Giving in input the loop perimeter, loop diameter and loop conductor will calculate electric characteristics, bandwidth, and efficiency

This receive only loop covers a frequency range of about 5 MHz to 22 MHz and is built from readily available parts.

This article describes a loop usable from 7 - 21 mHz, using half inch copper tube 3 feet in circumference

Planning and modelling Delta Loop antennas for all the ham radio HF bands include calculated wire lengths at each mid-band

Loop antennas articles with restricted access to arrl members

A simple delta loop antenna antenna for the six metre amateur radio band

Antenna experiment - Delta Loop for 7 Mhz band by AG1LE

A german documento on magnetic loop antennas

Stacking 2 Meter Halo Antennas by Mike Fedler N6TWW

Compact and efficient magnetic loop antenna that cover from 40 to 10 meters project by G8ODE published by RSARS

A figure-8 double loop antenna

A Quad Loop antenna for 17 meter band

Bill Rinker, W6OAV, handcrafted this compact magnetic HF loop from copper and pvc plumbing supplies, a 12 volt motor, and some teflon sheets. He's had great reports with it.

K9AY 160M / 80M Receiving Loop Antenna System by K7SFN

A 7MHz Full wave loop antenna in diamond shape for field day operations made with three 31 foot Jackite poles

Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes

Quad and loop antennas comparisons, evaluating the impedance and gain of both antennas and considerationso n horizontal loop antennas for low bands by PA0FRI

A wire delta loop antenna project for six meters band

This experiment was inspired by Peter VK2TPM's receiving loop experiments for 80 metres.

GM3VLB Mini delta loop antenna

A magnetic loop antenna using a 28\" bicycle rim for six meter band

A light and portable magnetic loop antenna with improved bandwidth and performance by HB9MTN

Overvoltage protection, Voltage stabilization, Grounding in wiring, Ground wire resistance

picture and dimensions of a coax loop antenna centered at 51.490 MHz

Alan yates vk2zay's ham radio website, homebrew construction, general electronics, high voltage experiments, amateur rocketry, and general geek stuff

A magnetic loop antenna for 7 Mhz by ZL1BJQ

How to build a super AM antenna, These plans have been used by many people, with good results.

Ham radio antennas and electronics, specialized in 1/2 wave dipole, OCF dipole, windom, full wave loop, end fed, inverted L, portable end fed antenna, long wire, SWL antenna, fan dipole, multiband dipole, G5RV and military antennas.

Article using a full wave delta loop antenna at low height, feeding methods, performance reports on 1984 QST article by W1FB and W1SE

An LF/VLF Portable Loop Antenna N4YWK

If you have space constraint at your QTH for a HF antenna, you can try contructing this HF magnetic loop antenna for 40-20 meters bands

Theory of horizontal loop antennas, as discovered by G2PL using a lowered quad antenna and theorized by ZS6AKA

Although a magnetic loop antenna(aka small loop antenna) is very compact, its efficiency is close to a half-wavelength dipole if carefully built.

Drawing and plan for an HF magnetic loop antenna

Magnetic Loop antenna for broadcasts band reception

Loop antenna picture gallery

A SQ Loop antenna for 50 MHz, project include pictures and schematic diagram

This max size magnetic loop antenna for 14 MHz with a totall circumference of 6m is designed to attach to a wall

A javascript online calculator for popular wire antennas, from the standard easy to build flat-top dipole, to the inverted V dipole, but also the Quad Loop, and the equilateral delta loop antenna

Antenna experiment a Delta loop antenna for 7 Mhz band