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Query: magnetic loop ant
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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. The antenna can be put together in a short time and is cheap by Peter Parker VK3YE ex VK1PK -
This loop it is small and light enough to carry while operating, it disassembles into small but rugged pieces that fit easily in a backpack or gym bag, and it can be tuned from 14 MHz to 30 MHz. This tunable magnetic loop antenna is my contribution to the well established art of amateur loop making. Can be tuned from 14 MHz to 30 MHz. -
Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible -
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Documents and schema on how to build a Magnetic Loop Antenna fo 80/30 mtrs -
Article on a small magnetic loop antenna for forty meters band by Ben Smith -
A custom made 80 meter loop antenna. Reports on usage and tips to build the support. -
Experience and practical use of magnetic loop antennas, by N0HC -
A well documented plan to build a magnetic loop antenna for Shortwave Listening, includes photos and diagrams. -
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A Mississippi Style 40 meter magnetic loop made from available aluminum conduit, this antenna will not disappoint by Ken Holland, K9FV -
Car mount magnetic loop antenna plans from 3.5 MHz to 7.5 MHz, LA6NCA, Larvik, Norway -
Magnetic loops are a compromise antenna and performance will be down on a full size-wire antenna particurlarly on lower HF Bands. This article compare this magnetic loop with a full-sized wire antenna on 80 meters by VK3YE -
Ham Station description of HB9ABX and CE3CWF, magnetic loop antenna details, Free Energy devices, Pictures from Switzerland and Chile. -
The resource provides detailed information about a five-band indoor magnetic loop antenna designed for amateur radio operators. This antenna is capable of operating on the 20, 17, 15, 12, and 10 meter bands, making it a versatile choice for various HF communications. Constructed from a single 3-meter length of 22 mm copper tube, the design emphasizes compactness and efficiency, which is particularly beneficial for operators with limited space. The page includes insights into the construction process, tuning, and operational tips, catering to both novice and experienced users. In addition to the technical specifications, the resource also discusses the advantages of using a magnetic loop antenna indoors, such as reduced interference and improved performance in urban environments. It serves as a practical guide for those interested in building their own antenna, offering a straightforward approach to antenna design and construction. Overall, this resource is a valuable addition to the toolkit of amateur radio enthusiasts looking to enhance their station with an effective indoor antenna solution. -
Magnetic loop antenna calculator and loop antenna design program for windows let you calculate dimensions for magnetic loops antennas, in german -
Free windows program to calculate magnetic loop antenna.This small loop antenna calculator allow to determine capacitance and voltage based on Loop circumference, desired resonant frequency, conductor diameter and the operating power -
A simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, made from 16 feet of RG58 coax cable. The performance is impressive for its size but not meant to replace a Yagi. The antenna features a tuning head, matching unit, tuning capacitors, band change switch, and matching transformer. The feedpoint is at the bottom of the loop. The document provides detailed instructions on assembly and operation. -
HF Antennas, magnetic loop antenna, based in Italy -
You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM -
antennas experiments by David Reid PA3HBB G0BZF -
VHF Antenna in a lunchbox. The magnetic loop on two metres band Lloyd Butler VK5BR -
A homemade Magnetic Loop antenna from a spare 3m length of RG213 working from 30m to 15m with a 130pF tuning capacitor -
Interesting review about active magnetic loop antenna Wellbrook ALA 1530 and 330S by ON4SKY -
If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter -
A coaxial cable tuneable magnetic loop antenna for 7MHz. This experimental antenna does not require a tuning capacitor -
Pictures and calculated values for this home made magnetic loop antenna for the 160 meters band by HB9MTN -
Constructing a compact, two-band magnetic loop antenna for HF operation, especially from constrained locations like a balcony, presents unique challenges. OK1FOU's design, inspired by DJ3RW's 50 MHz loop, addresses these by employing an unusual side-fed configuration and placing the symmetric, two-section variable tuning capacitor at the bottom of the loop, directly connected to the coax shield. The article provides specific material recommendations, including two 1-meter wooden pales and about 3 meters of thick loudspeaker cable, noting the high current (60A at 100W) in the loop. Construction steps detail forming two turns with a 5 cm gap, using a GDO to pre-tune the open loop to a frequency slightly above the desired highest band, and then integrating the tuning and coupling capacitors. For 10/14 MHz, an open loop resonance of 16-17 MHz is suggested. Practical experience with the 10 MHz band from a third-floor balcony in Prague (JO70GC) shows a 1:1 SWR across most of the band without an external ATU. While DX traffic was modest due to the urban environment, QSO examples with RA6WF, LA6GIA, G0NXA, and LZ1QK on 10 MHz are provided, demonstrating its operational capability. -
Also known as Magnetic Loop Antennas, by AA5TB. Excellent article on construction tips and tecniques of a Small Loop antenna -
A well documented article on a small magnetic loop antenna for the 40 meters band -
A page about a Magnetic loop antenna project for the 40 meters band, includes nice pictures and history of construction -
Local and DX contacts from tight spaces, it works from 40 to 17 meters -
Portable magnetic loop antennas - G4TPH Mag-loop antennas Reviewed in PW and RadCOM, Both QRP and QRO, Portable. The only Magloop on the market that is fully portable -
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 magnetic loop made just of wire. Suitable for portable usage and for QRP operations. -
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 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 -
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 -
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Compact and efficient magnetic loop antenna that cover from 40 to 10 meters project by G8ODE published by RSARS -
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A light and portable magnetic loop antenna with improved bandwidth and performance by HB9MTN -
A magnetic loop antenna using a 28\" bicycle rim for six meter band -
A magnetic loop antenna for 7 Mhz by ZL1BJQ -
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 -
Although a magnetic loop antenna(aka small loop antenna) is very compact, its efficiency is close to a half-wavelength dipole if carefully built. -
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