magnetic coil

Rotatable Dipoles  ^pop - Portable, and shortened with loading coils rotatable dipoles for 6 meters, 20 meters and multibands.

A magnetic loop antenna for HF  ^pop - Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. Most parts needed can be purchased at a hardware shop. The antenna can be put together in an afternoon and requires only hand tools to assemble. It should cost less than sixty dollars to build. by Peter Parker VK3YE ex VK1PK

Magnetic Longwire Baluns  ^pop - Do these things do exactly what they say they do, or are they total hogwash? - Patrick lifts the lid on the MLB

Current distribution in Coils - Current distribution in the antenna loading coils

Multi Turn Magnetic Loop for 40/60/80 - The 40/60/80 is a portable loop that covers 80 meters with a high degree of compromise

GM3MXN Magnetic Loop Antenna - This article describes a loop usable from 7 - 21 mHz, using half inch copper tube 3 feet in circumference

A magnetic loop antenna  ^pop - Magnetic loop antenna by GM3MXN

HB9ABX Felix - Ham Station description of HB9ABX and CE3CWF, magnetic loop antenna details, Free Energy devices, Pictures from Switzerland and Chile.

Magnetic loop for 80m - Magnetic loop for 80m OH7SV, includes the OH7SV Magnetic Loop Calculator in an Excel file

Magnetic Loop Antenna Experiments - Building a magnetic loop antenna feels more like a small plumbing project as the principle building materials consists of copper water pipe and fittings that must be soldered ("sweated") together. Full details drawing and details here.

VHF Magnetic Loop - VHF magnetic loop atenna by ON1DHT

Magnetic Loop antenna  ^pop - Why is an Magnetic Loop antenna so special, this antenna is picking only the magnetic part of the elektro magnetic radio wave. The big advantage of this antenna is that the electric interference from the big city have no influence on the received signal

Inductors used in antenna matching networks - Article about variometers, helipot inductors, roller inductors, binary switched inductors, Coil and Capstan by G3YNH

FR Radio Lab - Magnetic Loop antennas, also availble in parts from japan

Mr coily - Base and mobile antennas,custom ball mounts, single, double, triple coil antennas, flat coils.

Hi-Q Antennas - HF Ham Radio mobile operation antennas manufacturer, W6HIQ, HA5CMG, VE7BOC, HF mobile antennas, screwdriver antenna, coils and filters.

Barker & Williamson - Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio

I.C. Engineering - Electromagnetic field strength meter

Geomagnetic and Solar Indices - NOAA / Space Weather Prediction Center, Geomagnetic K-indices and Running A-indices, Local Noon Solar Radio Flux, Daily Solar Indices with SSN

Solar Activity Forecast - Solar-activity and Geomagnetic activity forecast from Czech Republic

NGDC data - archives of geomagnetic data to further the understanding of Earth magnetism, includes ionospheric datas

ASAP - A Free general purpose antenna analysis user-oriented software program for numerical electromagnetic antenna design, antenna modeling and antenna analysis.

Magnetic Loop Designer - Magnetic Loop Antenna Design software by DK1NB

WINRLC - Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.

Inductors and Transformers - Solenoids, variable inductors, electromagnetic induction, transformers theory at G3YNH