Homebrew magnetic loop antenna

I decided to experiment with Magnetic Loops. First, I tried something simple. Using the software at the bottom of this page, I worked out that a. A magnetic loop antenna is electrically simple and looks like a two turn transformer with a tuning capacitor in the larger loop.

The “primary” of this transformer is a small loop of wire, fed by standard Ohm coaxial cable (coax) that goes to your HF transceiver. The BIG loop is like a transformer ‘secondary’, large. Here is a great article on building your own foot diameter loop from copper pipe that will fit in the attic of a single story home. Loop Antennas for ham radio.

The main capacitor was beefed up but a different value which covered MHz and above. All-I am thinking about building a small magnetic loop antenna for my apartment being that I cannot have an outdoor antenna. I have read a few forum posts which.

It is designed for portability, and can be assembled or disassembled in about a minute. When disassembled the antenna easily fits in a suitcase or backpack. What is a magnetic loop ? Radio waves travel by a wave of electric and magnetic fields at degrees to each other.

Our regular antennas work by recieving the electric field portion of the radio wave. A small current is transduced on the antenna. I will be putting together a magnetic loop antenna piece by piece, starting with home-brewing this variable capacitor.

In this video, I talk through some of the considerations I had while. Do you think that using wire with more resistance in an aerial gives you more efficiency? A loop is no different to other aerials when it comes to antenna theory. My original plan was to make it a fixed. Why an eight-shaped magnetic loop antenna ? The idea behind the double loop is that two properly polarised magnetic fields enhance each other and because the two loops are in parallel, the impedance at the tuning point will be lower and the bandwidth larger compared to a single loop.

W6LVP amplified receive-only magnetic loop antenna (boy is that mouthful): The W6LVP mag loop is a complete receive antenna system delivering top-of-the-line performance to amateur radio operators and SWLs. The army use also frequencies in this range. Two loops of 1x10mm Cu were used.

This article describes how to build a relatively small loop antenna which can be placed for instance at the balcony. My design is made for modest conditi. METER 3-ELEMENT VHF YAGI ANTENNA homemade and home brew MAGNETIC LOOP ANTENNA FOR VHF homemade and home brew 70cm 10-ELEMENT UHF YAGI ANTENNA homemade and home brew 70cm 6-ELEMENT UHF YAGI ANTENNA homemade and homebrew 70cm 4-ELEMENT UHF YAGI ANTENNA ho. I tested this loop quite a bit for the last two days.

Carolina Windom – Construction details for a 20m (66ft) off centre fed ‘Carolina Windom’ multiband antenna. A loop antenna is actually sensitive to the magnetic field and not the electric field (it is also called a magnetic loop ). Simple theory The genesis of a crossed loop from a simple two parallel loops is shown on Fig. A Magnetic loop antenna for 1-watts can be made fairly inexpensive.

There is calculator for building magnetic loop antenna. Try this calculator, to see hows the performance before making you own magnetic loop antenna. Recently I also built a receive only magnetic loop , just for shortwave listening. Since then he has been building custom magnetic loops for both amateur use as well as non.

Small transmitting loop antennas , commonly called magnetic loops or mag loops, can give surprisingly good performance when they are carefully designed and constructed. Although this online calculator is intended to assist with designing and building h. AYL-M kit that includes a mast, wire and all the hardware needed to construct the antenna.