The ground dipole forms a loop with effective area of A = Lδ / √ 2, where L is the total length of the transmission lines and δ is the skin depth. On a whim I tried connecting the other end of a 50' antenna to the ground terminal on the radio thusfore making a loop antenna. Multiband Loop Antenna Project by Gary Marbut, K7GMM and Ty Marbut, W7TYY. The Wonder Loop is the perfect antenna for picnic table or hotel room. This antenna has a switchable front end for receiving as a monopole or loop antenna. 5 reviews with 5 stars. 10-80 Meter Alpha Loop, 100W 10-40M, 20W 40-80 magnetic. Receive Antenna Total Weight:8. Windows come in all sizes so that loop may certainly 'fit' around yours. Here is a great article on building your own 3 foot diameter loop from copper pipe that will fit in the attic of a single story home. This is an exciting new product from Chameleon AntennaTM and you are now part of the magnetic loop HF. For many years, this antenna was the gold standard in Japan for receiving AM broadcasts with the highest quality. UCLA BPPL - Radiation from Magnetic Loop Antennas Magnetic antennas are used to excite and receive electromagnetic waves. Design, Experimenters and HF Antennas. 4 Eki 2018 - Pinterest'te eminborademirel adlı kullanıcının "Loop antenna" panosunu inceleyin. Honey, I Shrunk the Antenna QST July 1993, pp. I replaced that mono-band loop with a nested loop array for the 20, 17, 15, 12, and 10 meter bands. Their main characteristic is the use of the magnetic component of the electromagnetic field for both transmission and reception. Loop Antenna Fields. 5-inches for 1/4-in Copper Tubing and 16. A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor usually fed by a balanced source or feeding a balanced load. This proves that the NF loop antenna impedance is well matched to 50 Ω. This action will open a modal dialog. Loop antennas are low frequency loop-shaped antennas used for measuring electro-magnetic fields. The antenna loop consist of a circular shape attached by a voltage source and then the loop will excited and radiate Electromagnetic waves , We consider the loop as a ring and there are a current passes through the loop due to the applied voltage , we know the current term means that physical behavior we see when charge moving , the Metal. Other articles where Loop antenna is discussed: navigation: Direction finders: …signals picked up by a loop antenna are weakest when the plane of the loop is perpendicular to the direction in which the radio waves are traveling. Loop coil is not included, you need to make your own coil. They are quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna. I again used this loop for 80 and 160 meter work in the recent North American QSO Party (NAQP) SSB Contest. This antenna is a full wavelength single-delta-loop, with the point of the triangle at the top of the single support pole, and fed near one of the corners - One Quarter Wavelength down the diagonal leg. I'd love to build a magnetic loop antenna. If the current distribution in an antenna is known, there is an “exact” procedure to calculate the far-zone electromagnetic fields and the corresponding radiation pattern. The directional loop design in combination with the receiver's high pass filtering, greatly reduces unwanted noise and hum. Rescue Electronics Surplus. We have over 32 years of experience designing and building antennas and systems to satisfy the ever expending communications needs. The LOOP ANTENNA was designed for radio operators who have limited space for their antennas, yet still want a quality antenna that meets their needs. The small loop produces electromagnetic radiation that starts as a magnetic field (rather than an electric field) and, when mounted vertically, is a directional antenna. We will see that a vertically. Within this physical description there are two distinct antenna types: The large self-resonant loop antenna has a circumference close to one wavelength of the operating frequency and so is resonant at that frequency. Depending on how it is constructed, what components are used, a loop antenna can be light, low power and inexpensive, heavy, high power and expensive, or somewhere in-between. Loop Antenna:They are cheap and not easily de-tuned by hand movements. Build a Long Range Antenna for $20 Antenna Anatomy. Loops can be electrically small or electrically large. 0 Portable HF Loop Antennas. TERK not only offers superior design, but also delivers the highest performance standards in the industry in both indoor and outdoor offerings. 6 Responses to My NVIS Multi-band Horizontal Loop Antenna. A loop will have a radiation resistance of microohms, and a dc loss resistance of a. RF signals are electromagnetic waves that consist of an electric. The fact that most designs on the market now were developed prior to the advent of much of the computer technology, software and. capacitors of a transmission tuned loop antenna efficiently. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. You have ample room for towers and antennas, but not enough room for Beverages. The features are not real different from loop to loop. LOOP Antenna by I3VHF. The Hilomast, LLC Mobile HF Loop Antenna, developed for NVIS (Near Vertical Incidence Skywave) communication across 3-15MHz, overcomes these limitations by having high-radiation. I was listening to my AK model 40 radio the other day and was getting decent reception with lots of static. The aim of any receiving antenna is to convert an electromagnetic wave into a voltage. This Demonstration plots the normalized E-radiation pattern of a center-fed linear dipole antenna with sinusoidal current distribution on the axis. On a whim I tried connecting the other end of a 50' antenna to the ground terminal on the radio thusfore making a loop antenna. This passive mag loop takes advantage of the Airspy HF+ Discovery's exceptionally high dynamic range and is an impressive performer. Description. A loop will have a radiation resistance of microohms, and a dc loss resistance of a. A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. King KA-36 ADF TSO Loop Antenna. 2 band rectangular loop antenna for 15m and 10m band. of ECE P a g e | 5 1. Aluminium LoopThe design of this ne. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. This is an exciting new product from Chameleon AntennaTM and you are now part of the magnetic loop HF. On 40m it is a 2 wave length open loop or Bi-Square. "An Improved Feed network For Loop-Type Receiving Antennas" Unloaded PC boards for NCJ loop antenna $25. The "rabbit ear" antenna is one of the few electronic designs that your grandparents might still recognize from their past. It's like I have brand new radios! Great antenna, and I am not even turning it. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. Loop antenna can be built to tune to just about any frequency you desire, almost independent of its surroundings. Frequency response is 300 Hz to 30 kHz (broadband). All measurements are critical. The antenna loop consist of a circular shape attached by a voltage source and then the loop will excited and radiate Electromagnetic waves , We consider the loop as a ring and there are a current passes through the loop due to the applied voltage , we know the current term means that physical behavior we see when charge moving , the Metal. Each mode can be switched immediately and this enables us to use the best antenna for the moment. The true gain for a loop antenna is what is shown in the net gain graph, not what the maker claims. Click Here to see more on transmitting Loop Antennas from AA5TB. Electrically small loops are used in receiving mode where the signal-to-noise ratio is more important than antenna efficiency. A loop will have a radiation resistance of microohms, and a dc loss resistance of a. Was regelmatig je handen en blijf op voldoende afstand van anderen. 8-61 MHz, 500/1500 Watts PEP, Loop, OCF, ZEPP. The Delta Loop is not only a great transmitting antenna but a low noise receiving antenna. A second loop, which is one fifth of the diameter of the large loop, is connected to the feedline and this small loop is positioned in the large loop on the opposite side of the tuning capacitor. Cookie preferences. The tuned loop antenna is more effective as a shortwave antenna when its width/height dimensions are a larger portion of the wavelengths it is intended to be used for. For SW I would down size it to one half or one third the area of the MW flag or delta flag. The loop antenna will be connected to my transceiver via a coax feed-line. Loop antenna principle. The finite size of the loop is causing "filling" the zero at zenith. Footnote I have pointed out in the text that when the loop is connected via the differential input circuit the electric field component is induced in a common mode against earth and is essentially balanced out by the circuit. Photographs of Loop Antenna at present location. Power rating: 300 W from 3. It has a relatively small profile and can even be kept below fence level and still perform wonderfully. 1: Calculator results for a loop with a diameter of 1 m (3. In contrast to the MLA M here is a stepper motor in the housing for tuning. Loaded Loop Antenna (80- 10 m) Low Height Narrow Delta Antenna for the 80, 40, 20 and 15- meter Band. Within this physical description two different antenna designs are common: the small loop (or magnetic loop) with a size much smaller than a wavelength, and the resonant loop antenna with a circumference approximately equal to. The antenna is only 34 inches in diameter and has a built in tuner at the base of the antenna. It is the energy storage or reactive induction field response within λ/10 distance from the antenna that gives small "magnetic loop" and "electric dipole" antennas their names. 150 WattAbstimmbox mit eingebautem Kreuzzeiger SWR/WattmeterSpannungsversorgung. 44MB download) The Waller loop is said to be the equivalent of a rotary Beverage antenna. Price for all three: $ 189 78 Add all three to cart. You can build it cheaply from junk box parts. Antennas for the reception of low frequency radio include our L-950 active loop, L-400B active e-field antenna, L-111 low frequency to HF converter system and the L-202B LF long wire preamplifier. Multiband Loop Antenna Project by Gary Marbut, K7GMM and Ty Marbut, W7TYY. The loop comes with 4 machined, powder coated stabilizing feet that attach by custom locking thumb screws. The problem was to compare the performance of a Chameleon CHA F-Loop Antenna, a 0. In general, I’m not really fond of magnetic loop antennas, but Peter has made his work. Build a Long Range Antenna for $20 Antenna Anatomy. What is a magnetic loop antenna ? In a few words the ALA 1530 is a compact HF antenna constituted of an aluminium sheated loop of 93 cm of diameter. Using an antenna analyzer, I adjusted for best SWR. Save magnetic loop antenna to get e-mail alerts and updates on your eBay Feed. QRP HF Loop Antenna Here is a circuit of simple HF Loop antenna suitable for QRP operation on all bands from 1. Aluminium LoopThe design of this ne. WHY USE A FULL WAVE HORIZONTAL LOOP INSTEAD OF A DIPOLE ON 160, 80, 75, 60 and 40 METERS? (Rev 6/2017) A dipole antenna just will not work unless it is at a sufficient height. 2F for caveats about calculators! 10 mm (3/8") copper tubing, 5 milliohm loss. The FM-10A-Loop is a heavy-duty, high performance FM loop antenna 21. Works with any portable radio, without complicated connections. 2 band rectangular loop antenna for 15m and 10m band. However if it becomes faulty Wellbrook and only supply a limited number of spares. If you decide to feed your loop with coax, I'd suggest using RG-8X or RG-213 and a high power, high performance 1:1 or 4:1 Current-type balun. SLA - Square Loop Antenna. 5-inches for 1/4-in Copper Tubing and 16. Car Antenna Extendable Telescopic Antenna Mudguard Bmw 3 E30 New Boxed Set. This antenna is the most rugged system we have encountered in the mobile HF loop category. Optimum size for Hi-VHF Square Loop is 20-inches per side (Center-to-Center) for 1/2-in (Type M) Copper pipe (OD=0. 64 - Dual-Band Sloper Antenna. This antenna is a full wavelength single-delta-loop, with the point of the triangle at the top of the single support pole, and fed near one of the corners - One Quarter Wavelength down the diagonal leg. On a whim I tried connecting the other end of a 50' antenna to the ground terminal on the radio thusfore making a loop antenna. Tuning is a breeze, dial the radio to the frequency being used and key the radio in AM or in CW for minimum SWR. Drill adapter for winch Receive 4 square antenna design Using a boat lift hoist to tilt over an HDX-5106 tower DX Engineering AVA-1 Active Vertical Antenna Schematic NEW!. The antenna employs a plurality of interconnected conductive loops which are magnetically coupled to a conductive structure. BUY NOW ALEXLOOP PREMIER The AlexLoop has long been the gold standard of the portable magnetic loop antenna. Systems EHA-51B Monopole and 12” Loop Antenna 1 kHz – 60 MHz A. Mizuho UZ-8DX Loop Antenna For Sale. New listing Orginal Bose 199824-002 AM Loop Antenna for Lifestyle 20/25/30/40/50 2. The antenna factor of the loop is important. Loop Antenna Project The Loop Antenna Project was developed in partnership between Open Source Radio Telescopes, the Green Bank Observatory, and WV AllSTAR. Note to my readers of this blog: I've decided to expand the blog to include various other interests I have. I'd love to build a magnetic loop antenna. Loop antennas are of two types. Larger, high Q loops have better antenna factors and are therefore more sensitive. 569-in), 18. This is a design by KK5JY and the full technical details can be found at KK5JY. And the shape will help with the gain as shown below: We are going to make the 50 ohm variant, b= 3822mm and a= 1910mm. RF signals are electromagnetic waves that consist of an electric. It's one feed line eliminates the need for multiple antennas to cover the HF bands. Select to filter reviews with 5 stars. The antenna Q is very high because the radiation resistance is small compared to the reactance of the loop and the VSWR bandwidth is very narrow. Elektronik devre, Elektronik ve Elektrik hakkında daha fazla fikir görün. 00 Ex Tax: £210. their amplifier/receiver chassis ground, and therefore electric field interference pick up tends to self cancel. All measurements are critical. Build a Long Range Antenna for $20 Antenna Anatomy. Later, from 20s, magnetic loop antennas were used for broadcasting reception. King KA-36 ADF TSO Loop Antenna. The measurements on 14-28 MHz were taken with only the air variable tuning capacitor on the loop antenna. The loop antenna is built using a simple wood form to hold the wire. 5 to 7 MHz ** 800 W from 8 to 14. diameter loop antennas that work on 40 through 15 meters continuous MFJ 1786 Super Hi-Q Loop Antennas. This had 4 x 2 inch coils in each corner of the loop with 30 turns of 1mm wire and I stretched the loop all around the garden and even inside the attic to make the loop as big as I could. A magnetic loop antenna is a winding of copper wire around a frame (for air-core loops) or around ferromagnetic material (for ferrite loops). 7m AMA 8 Loop to a 20ft marine whip and against predicted data for an optimized 20ft center loaded whip. Loop Antenna Project The Loop Antenna Project was developed in partnership between Open Source Radio Telescopes, the Green Bank Observatory, and WV AllSTAR. Op onze informatiepagina's lees je waar je in deze periode op moet letten. Hourglass loop antenna In "The Hourglass Loop Antenna" ( QST December 2018, pages 35-37) , John K4ERO describes the construction of two-wavelength wire loop antennas for three VHF/UHF bands. The ground dipole forms a loop with effective area of A = Lδ / √ 2, where L is the total length of the transmission lines and δ is the skin depth. Build a Long Range Antenna for $20 Antenna Anatomy. Probably the most familiar form of this antenna is the ferrite loopstick found in portable AM broadcast-band receivers. A small current is transduced on the antenna and the reciever amplifies it and converts it to audio. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. 071-1098-00. Supplied to professionals and radio amateurs alike. Homemade Magnetic Loop antenna for 27 MHz Else known as Small Transmitting Loop or STL, this isn't a traditional "electric" antenna, because the "near field" is almost "magnetic". Over the long weekend following Thanksgiving, I tested my newly installed Loop on Ground (LoG) antenna. See more ideas about Ham radio, Antique radio and Ham radio antenna. Loop antennas form another antenna type, which features simplicity, low cost and versatility. I recently had great results with a delta loop on 10 meters and a rectangular loop on 20 meters, (50+ countries in 3 weeks of casual operating!), then I decided to take the plunge and put up a 80 meter full-wave. QRP HF Loop Antenna Here is a circuit of simple HF Loop antenna suitable for QRP operation on all bands from 1. A circular antenna is the best and has in a certain. Compatible products. I originally built this for RX direction finding so that I could locate the source of some interference. These loops are made to enhance radio reception in the broadcast, or medium wave (MW) band range. A delta loop fed from the bottom or top is horizontally polarized and can be vertically polarized by feeding it from a corner at the base. The loop is of a size that can be mounted inconspicuously against a garden fence away from household interferences. Aluminium LoopThe design of this ne. A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor usually fed by a balanced source or feeding a balanced load. All Consumer Electronics (17) Radio Communication (12) Antennas (11) Ham, Amateur Radio Antennas (9) Other Radio Antennas (2) Business & Industrial (4) Format see all Format. The skywire loop is an excellent antenna - they can be a bit of work to get up in the air if you have a lot of obstacles (trees. diameter loop antennas that work on 10 through 30 MHz continuously, Not Yet Reviewed. Holes are drilled in each end of the arms to string the wire. Its inception was predicated on allowing users to learn the basic concepts of loop design and construction. View my cart. Within this physical description there are two distinct antenna types: The large self-resonant loop antenna has a circumference close to one wavelength of the operating. at category loop Antenna : Antenna Circuits : RF CircuitsCircuits and Schematics at Next. Loop Antenne 10-30Mhz, 92cm Durchmesser, max. Ranga Rodrigo (University of Moratuwa) Impedance and Loop Antennas January 4, 2009 22 / 41. The 80 meter Delta Loop is mounted in a vertical plane. The Mizuho UZ-8DX desktop loop receiving antenna is a classic item of radio gear. I devoted a good portion of the presentation describing how to build a passive loop antenna design by Airspy's engineer and president, Youssef Touil. Most receivers have a UHF noise figure somewhere in the range 3-10 dB, with 5 dB being typical. 20 amp regulatable power supply new design. This passive mag loop takes advantage of the Airspy HF+ Discovery ‘s exceptionally high dynamic range and is an impressive performer. 1: Calculator results for a loop with a diameter of 1 m (3. Loop antennas are of two types. us GET FREE WORLDWIDE SHIPPING WITH $ 300 MINIMUM. Electrical specifications Continuous frequency coverage 3. In addition, noisy powerline hardware in the area can cause random noise now and then. This greatly simplifies hooking up the antenna to TECSUN receivers like S-2000 and S-8800, while it is just as easy to use. Works either in Standard and Metric units, and let you choose on material, and loop shape, as circular, square or octagon. Portable Magnetic Loop Antennas Ham Radio's Best Kept Secret Eric Norris WD6DBM v2. Magnetic Loop Calculator v. Optimum size for Hi-VHF Square Loop is 20-inches per side (Center-to-Center) for 1/2-in (Type M) Copper pipe (OD=0. diameter loop antennas that work on 40 through 15 meters continuous MFJ 1786 Super Hi-Q Loop Antennas. Built using cheap 4 pair (8 wire) telephone 'ribbon' cable,& (optionally) housed in cheap garden 13mm (~half inch) irrigation plastic hose. See more ideas about Ham radio and Ham radio antenna. The saturation indicator is activated when an incoming. The radius of the loop, R, could be electrically small or large. The Carpet Loop is made up of two components: A tuner, and the antenna cable itself; the cable can be either 5-conductor rotator cable or 4-conductor flat phone cable, both. His antenna is an MFJ1788 magnetic loop antenna mounted inside his garage. Ultra Wide Band (UWB) #N#Quadcopter Antennas. It so small that inexpensive AM receivers (the consumer kind) use just the antenna bandwidth to select a station. Square Loop Antenna listed as SLA SLA: Special Libraries Association: SLA. What a great story, Ray. To determine the approximate circumference in feet of a full wave loop antenna use the formula:. Waller Dual Loop by IV3PRK (. Resources listed under Loop Antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Loop antennas are primarily used to measure the magnetic field strength at lower frequencies. More simple and effective, this AM antenna provide a better am radio solution for stereo receiver radios on table top, home, attic, office, garage, basement and so on. QUAD or LOOP ANTENNA 19-01-2011. Three of the sides of the cube correspond to intersections with the coordinate planes. They are nailed together like a plus sign. If the receiver is tuned to the frequency of a particular transmitter and the loop is rotated for minimum signal pickup, the direction…. A 100 Watt Small Loop: Description and Measurements. The characteristic impedance of a loop depends on its shape. It is roughly 475 feet long and fed with 450-ohm ladder line. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. Large loop antennas are also called as resonant antennas. As a result, the radiation in the direction perpendicular to the plane of the loop is completely canceled. The "primary" of this transformer is a small loop of wire, fed by standard 50 Ohm coaxial cable (coax) that goes to your HF transceiver. On the air comparisons with my low Yagi confirmed instantly that this design was a hands-down winner for working both local and distant stations. The second picture shows the copper that was used to make the gamma match tube. Loop Antennas. Click here for Active Antenna Amplifier Ham Kit. A small loop resonated with a capacitor has a very high Q factor. The MFJ-1786 Magnetic Loop Antenna Well, I bit the bullet today and placed my order with MFJ for an MFJ-1786 magnetic loop antenna. Adventures with an 80 Meter Loop Antenna, Part 1 Some years ago while I was dating the woman who would become my wife, I thought about setting up a station at her home in Nevada City, California, that I could use when I visited her. "A loop antenna has a continuous conducting path leading from one conductor of a two-wire transmission line to the other conductor. The bulk of the construction is easy to do. Much has been printed in QST over the years on loop antennas. The book Magnetic Loop Antenna: Slightly Different Each Time, starts out by providing a theoretical description of magnetic loop antenna (MLA), including a calculation example. Antenna wire can be #14 hard-drawn antenna wire. Systems SAS-560 Passive Loop Antenna 20 Hz – 2 MHz A. Many new slots in 10m band plus new one DXCC’s and rare IOTA’s. He is going to move QTH and no more room for this antenna. Every loop antenna can be individually calibrated in accordance with ANSI C63. W6TC, 341 La Mesa Drive, Portola Valley, Californ'a 94025 '979 The d into e. The consequence of this for your antenna is very small bandwidth. It so small that inexpensive AM receivers (the consumer kind) use just the antenna bandwidth to select a station. A Passive, Resonant, Transformer-Coupled Loop Antenna for Shortwave. 5 m] with electrostatic shield), operating over the frequency range of 9 kHz to 30 MHz. Built using cheap 4 pair (8 wire) telephone 'ribbon' cable,& (optionally) housed in cheap garden 13mm (~half inch) irrigation plastic hose. 5 to1 balun hang-n-go AIRPLANE WWII AND 1940'S 1950'S AIRCRAFT LOOP ANTENNA. More on the interference later. A loop antenna is a type of a radio antenna, which consists of a loop (circular electrical conductor) with ends connected to the transmission line. Jan 29, 2017 - DIY Automatic Tune Magnetic Loop Antenna By GM4WZG The Small Do It Yourself Automatic Tune Magnetic Loop Antenna that he made is only 1 meter in diameter yet it has more or less the performance of a full size dipole – and has an amazing control box. The Faraday Loop is commonly installed within the main loop opposite the capacitor and formed into a circle. This antenna works great on the AM band because of the properties of these frequencies. The length of the wire is a full-wave. The loop frame is made from 1/2" square hardwood strips that are 24" long. View my cart. Select to filter reviews with 5 stars. us GET FREE WORLDWIDE SHIPPING WITH $ 300 MINIMUM. An AM loop antenna can greatly improve the am radio reception. A Very Simple Broadband Receive Loop for the Broadcast Band and HF Spectrum - W1AEX appliances can cause quite a bit of momentary noise that is picked up by my main transmitting wire antenna for the 160 - 40 meter bands. Aluminium LoopThe design of this ne. Thus 3 different antennas can be used. Here is a simple antenna design that is effective from 3 to 22 MHz. There’s only one problem in my book; the PCB is covered in epoxy potting and you can’t see the design or repair/modify it! Something that I’ll have to fix!. A loop antenna is very directional. A tripod option is now available. Notebook showing Small Magnetic Loop antenna results by cutting and testing method. Small Tuned Loop AM Broadcast Antenna. The coaxial cable is connected to both sides of the capacitor box which is located at the bottom of the mast. The built in Tuner is protected by the loop on its heavy duty mount. The loop antenna is quite heavy and well designed. Large loop antennas; Small loop antennas; Large loop antennas. I chase CW DX and logged 100 countries within the first couple of weeks of having it up. A MLA is a convenient, lightweight antenna, which can be deployed quickly and is ideal for use in places where HOA restrictions make full size wire antennas impossible, or where there just is not enough room to erect a conventional antenna. Okay, let's build one! Below is a rough diagram and some photos of my skywire horizontal loop antenna. Waller Dual Loop by IV3PRK (. That is hardly high performance, and the stub destroys harmonic resonances that are normally useful in loops. A long-perimeter horizontal loop antenna normally is used as a multi-band device, otherwise a completely different one- or two-band antenna would be erected. I originally built this for RX direction finding so that I could locate the source of some interference. This new design is easy to match in any situation. Loop antennas are conductors bent into the shape of a circle or a rectangle with a gap in between for terminals. Loop antennas can have various shapes: circular, triangular, square, elliptical, etc. Did more in-depth reading on magnetic loop antennas and have decided not to move forward on building one. Homemade TV Antenna Using… With household expenses reaching its peak, it is but obvious that a cable TV bill would only come as an unwanted expense. Resources listed under Loop Antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. The loops are spaced 200mm apart and the loop is fed with a coupling loop at the bottom ( The capacitor is also at the bottom. Chameleon Antenna has been a pioneer at rethinking and redesigning portable antenna systems since almost a decade! Pushing the limits of design and manufacturing with cutting edge technology, Chameleon Antenna are known to design, manufacture and distribute products worldwide that are versatile, dependable and built to last!. com, the AN-48x is supplied with adapters to connect the antenna to BNC and RCA sockets. The component which can restrict a wide operating bandwidth is the choke balun. 7m AMA 8 Loop to a 20ft marine whip and against predicted data for an optimized 20ft center loaded whip. 9 kV peak voltage. by John Reisenauer, Jr. The second picture shows the copper that was used to make the gamma match tube. Helical Antenna: It is very directive antenna and provides good amount of gain. The lower bands (80 and 40) want around 100 ohm, 30 and 20 want a 200 ohm feedpoint and 17 through 10 meters would be happiest with a 300 ohm feedpoint. For simulation it must be represented by an equivalent circuit network of lumped elements. View TERK Signal Quality Households in the United States can receive FREE Digital and HDTV signals with the proper antenna. In simplified terms, the larger tuned loop antenna captures more RF energy than a smaller one. Works with any portable radio, without complicated connections. The antenna presented here is a convenient combination of the Diamond BB7V vertical antenna (modified) and a large irregularly-shaped quad loop of wire, and a wire radial that is used to fine tune the antenna for best comprimise of low SWR on the various frequencies of operation. Feb 15, 2018 - Explore markp1310's board "Loop Antenna" on Pinterest. It is well known that the loop. Frequency tuned with varicap. The antenna bandwidth covers more than one band within the amateur radio frequency allocations. Loop Antenna Project The Loop Antenna Project was developed in partnership between Open Source Radio Telescopes, the Green Bank Observatory, and WV AllSTAR. They are nailed together like a plus sign. The antenna is intended to operate in close proximity to the radio, such as on a desk or table. 20 meter band square loop antenna. This construction is electrically balanced for large wave wavelengths, ie. Loop antenna principle. The pickup pattern is shaped like a figure eight. pdf), Text File (. Much has been printed in QST over the years on loop antennas. Super Antenna TM4 SuperPod Large Portable Tripod is a collapsible portable antenna tripod, that comes with with a black nylon carry case, it has a 3/8"-16 male stud fitting and UM3 SuperMount for a 3/8"-24 antenna and SO-239 coaxial cable connector; the TM4 SuperPod is made by Super Antenna Systems Corp. We will see that a vertically. If you can hear RFI on your home antenna but cannot hear it on your loop antenna, searching for the RFI becomes much more difficult. All the loops described here were designed and built by myself. He is going to move QTH and no more room for this antenna. The single-element loop antenna is almost exclusively used on the low bands, where it can produce low-angle radiation, requiring only a single quarter-wave high support. garage or in the field anywhere I wanted. Notebook showing Small Magnetic Loop antenna results by cutting and testing method. A loop antenna is an antenna primarily for the AM broadcast and the Longwave bands. Power rating: 300 W from 3. Ideally, the fully meshed position of the. Bullet 50:200 (4:1) HF Balun, 1. Recently Chinese manufacturers have begun producing a low cost wide band (100 kHz - 30 MHz) magnetic loop HF antenna known as the MLA-30. In this view, you can see the PVC pipe mast and cross-arm assembly which supports the two turn CATV cable loop. This page contain electronic circuits about Electronic Loop Antennas. Using an antenna analyzer, I adjusted for best SWR. As can be seen from Figure 9, the measured value is even lower than the simulated one. The secondary is the main loop, and is the actual antenna. 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 – particularly for those with space and/or budget limitations. The FM-10A-Loop is a heavy-duty, high performance FM loop antenna 21. Performance is better than anything we have ever seen and its wide bandwidth makes it immune to all weather conditions except heavy ice. 10-80 Meter Alpha Loop, 100W 10-40M, 20W 40-80 magnetic. The other two vertices are guyed off the back fence. Loop Antenna Amplifier + High Z Antenna Amplifier. Add to Cart. Loop antenna definition is - a coil antenna usually consisting of a single turn. Loop antennas can work on other frequencies also but need some modification because of the frequency property differences. Within this physical description two different antenna designs are common: the small loop (or magnetic loop ) with a size much smaller than a wavelength , and the resonant loop. The 24 inch square PVC loop may be broken down into components for storage. The following is an article which I wrote and was published in the February 2013 edition of the Central Coast ARC "Smoke Signals" magazine. Square Loop Antenna listed as SLA SLA: Special Libraries Association: SLA. ) The UHF Model is 11 inches in circumference. us GET FREE WORLDWIDE SHIPPING WITH $ 300 MINIMUM. On the air comparisons with my low Yagi confirmed instantly that this design was a hands-down winner for working both local and distant stations. Since 1906 magnetic loop antennas were used for direction finding purposes needed for navigation of ships and planes. Ideal small loop antenna can be viewed as a magnetic dipole with a zero along z-axis. I chose this model for its wide impedance matching range, its ability to store 4000 frequency & impedance combinations, and its 200 Watt power rating. Showcasing World Lens Telescopic Antenna and other relevant items available for sale online. Cd (in red) is the distributed capacitance of the primary coil, L1. It is concluded that air-core bandolier loop antennas, and erhaps ferrite-loaded loop antennas, having peak transmit moments of about 2. 5-inches for 1/4-in Copper Tubing and 16. The static went away and reception on 1350 KHz dropped some, but reception on 1280 KHz improved greatly. Loop Antenna Amplifier + High Z Antenna Amplifier. - - Photo courtesy of N4IS - - Waller Flag Common Mode Chokes by N4IS (. But the increase in gain to due to increased radiation efficiency, not increased directivity. On 160m & 80m it acts much like a vertical with a counterpoise. A Very Simple Broadband Receive Loop for the Broadcast Band and HF Spectrum - W1AEX appliances can cause quite a bit of momentary noise that is picked up by my main transmitting wire antenna for the 160 - 40 meter bands. There is a general lack of measured data comparing small transmitting loop antennas to some sort of standard antenna. We will see here two different designs for reception into the FM and TV band. CHAMELEON ANTENNA F-Loop 2. So it doesn't stick out as much as a beam might. As described, this antenna has a range of 2. I experimented with the loop of metal for some months before I finally settled on making it into an antenna for 20 metres. Last month I published the teaser video for the Ultimate Man Portable Magnetic Loop antenna build. Vertical loops may be a single stand-alone loop (mono-loop), or they may be one or elements of a directional antenna, such as a Quad. All measurements are critical. Assembly of the antenna is very simple and involves these steps: (Refer to figs. The curves are skewed on 7 and 10 MHz due to the attachment of the lossy 150 pF or 60 pF shunt coaxial capacitors respectively on those frequencies. A loop with a circumference of 1/8 to no more than 1/4 wavelength is formed out of copper or aluminum, fed on one side, and matched on the opposite side. That is hardly high performance, and the stub destroys harmonic resonances that are normally useful in loops. Handles 25 Watts. This forms a parallel resonant circuit which, if the component values are correctly chosen, can be tuned across the band of frequencies we are interested in. ance so that the loop antenna is seen as a cur-rent source. The coaxial cable is connected to both sides of the capacitor box which is located at the bottom of the mast. 67 - Half-Sloper Antenna for 160m. Antenna measures 9' long, plus 2' Y-extensions. Some of the loops are just one coil, some have tuning capacitors and. 10KHz to 3 MHz. Magnetic Loop Controller for 4 Antennas: This project is for those ham amateurs who don't have a commercial one. Philips 25 ft. Although this online calculator is intended to assist with designing and building homemade, ham radio loop antennas for use in the HF bands, magnetic antennas have been. 80 meter loop frequency plot The table above makes it fairly easy to choose the feedpoint impedance for the 80 meter loop antenna. In fact, they are often used as electromagnetic (EM) field probes in the microwave. Tested up to 1000 watts SSB for a single loop. Click here for Active Antenna Amplifier Ham Kit. W6TC, 341 La Mesa Drive, Portola Valley, Californ'a 94025 '979 The d into e. Power rating: 300 W from 3. 3 reviews with 3 stars. Again the. Any antenna — TV, radio, or whatever — consists of three parts: the element array, the framework, and the mast. Sometimes it's an antenna article. This new design is easy to match in any situation. The Carpet Loop is made up of two components: A tuner, and the antenna cable itself; the cable can be either 5-conductor rotator cable or 4-conductor flat phone cable, both readily. My interest was aroused…. Op onze informatiepagina's lees je waar je in deze periode op moet letten. The curves are skewed on 7 and 10 MHz due to the attachment of the lossy 150 pF or 60 pF shunt coaxial capacitors respectively on those frequencies. Loop Antennas HF Receive Antenna Type:Shielded Magnetic Loop HF Receive Antenna Remote Mounting Position:Elevated HF Receive Antenna Style:One-piece HF Receive Antenna Transport Length:38 in. "A loop antenna has a continuous conducting path leading from one conductor of a two-wire transmission line to the other conductor. My magnetic loop inspired by DG2IAQ's design. This product comes with a one-year warranty. The shape does not matter as it is the area of the total number of turns that determines the strength of the signal - Circular giving the largest area for a given length of wire, but if it is easier to make a rectangular or any other shape, You. A Magnetic Loop Antenna. There is a general lack of measured data comparing small transmitting loop antennas to some sort of standard antenna. I have long been intrigued by the magnetic loop antenna and have been reading widely on the Internet on the subject for some time. google87cb626cead7d47b. Thank You & 73 VE3UK, W. There are two different types of loop antennas, one is the ferrite bar (as in your am radio), the other is wound on an air core form. Input impedances of the antenna on both bands depend on distance above the ground and condition of the ground. I threw this antenna together in 10 minutes to help out my dad. Small loop antennas are practical because they can be printed on the PCB at no extra cost. I also have 222 MHz. A loop antenna consists of a wire loop of arbitrary shape fed by an input current I in. 1 Introduction: An antenna (or aerial) is an electrical device which converts electric power into radio waves, and vice versa. O Box 645 Glenville, NC 28736 Voice: 828-743-1338 Fax: 866-304-8479. A hula hoop of 4 feet in diameter is going to have a resonant frequency nearest the 10 meter band with a single loop of wire, and this will have a greater impact on transmission than reception. Calculate small loop Antenna Factor. The true gain for a loop antenna is what is shown in the net gain graph, not what the maker claims. 8-61 MHz, 500/1500 Watts PEP, Loop, OCF, ZEPP. This gives you the length of a full wave loop antenna for the band you are using. Yeasu ft 857 - FC-30 antenna tuner - RG213 50hm coax (20ft ) - 1:1 Balun - horizontal loop I can tune all bands ok but feel that there isn't much difference compared with my D/pole on transmit, On receive its much better bringing some low stations up that i cant copy at all on the d/pole. antenna with the provided PVC support may be best. HF Loop Antenna DIY - Simple & Easy to Build Advantages: Simple & Cost Effective, Suitable for Indoor Installations, Compact in Size, and High Directivity. Loop antennas form another antenna type, which features simplicity, low cost and versatility. Op onze informatiepagina's lees je waar je in deze periode op moet letten. Next step was to try a new lower band due to decline of solar cycle 24. The feed loop where the SO-239 connector resides for the transceiver to connect up to, is constructed from 1/8" x 3/4" flat bar-stock 6061 aluminum, and this also was by design so that when assembled the mast and the feed loop along with the control housing become a ridged assembly to which the main loop mounts to and holds its form. Vertical loops may be a single stand-alone loop (mono-loop), or they may be one or elements of a directional antenna, such as a Quad. To generate the optimum cardioid pattern, the signal from the vertical antenna and the small loop antenna should of equal amplitude and combined with a 90° phase shift. All ATL-3 loop windings are centre tapped and balanced w. You may find them to be excellent multiband antennas. The Alpha Loop is a 10-40 Meter transmit/receive antenna, which handles 100 Watts PEP SSB, 50 Watts CW, and 25 Watts Digital. Welcome of my homemade loop antenna or loop aerial pages. pdf), Text File (. The characteristic impedance of a loop depends on its shape. of ECE P a g e | 5 1. The Carpet Loop is made up of two components: A tuner, and the antenna cable itself; the cable can be either 5-conductor rotator cable or 4-conductor flat phone cable, both. Systems' designs, manufactures and delivers high performance Loop Antennas for a wide range of magnetic field testing. The antenna is essentially a tuned circuit with the inductor formed by a loop of wire measuring less than 1/4 wavelength in circumference and resonated to the. The small loop produces electromagnetic radiation that starts as a magnetic field (rather than an electric field) and, when mounted vertically, is a directional antenna. A Small Loop Antenna for 160 Meters QST June 1993, pp. Antenna has good SWR on both 40 and 20- meter Bands. Rating Snapshot. 5, using NIST traceable equipment. By stacking a number of loops, we can increase the antenna gain and radiation resistance very easily. Free-Standing with Fold-Out Base. Any antenna — TV, radio, or whatever — consists of three parts: the element array, the framework, and the mast. Loop Antennas for ham radio. The picture at the right shows my configuration mounted on a 7-foot PVC mast. The widely used Yagi (TV aerial) antenna for example uses the electric field component. It is roughly 475 feet long and fed with 450-ohm ladder line. Loop Chapter 5 Practical Installations 14 Ground Systems Flag Pole Vertical Tree Mounted Verticle Invisible L Where is the Loop? Center Fed Stealth Antenna Tree Supported Delta Loop Chapter 6 Indoor Antennas 22 Indoor Loops Apartment Loop Portable Loaded Loop Attic Antennas Chapter 7 Construction Techniques 25 Wire Antennas Weather mounting the. This configuration is best suited for working long haul DX. 150 WattAbstimmbox mit eingebautem Kreuzzeiger SWR/WattmeterSpannungsversorgung. A loop antenna is a type of a radio antenna, which consists of a loop (circular electrical conductor) with ends connected to the transmission line. In a transmitting loop antenna, the direction of the current in the opposite elements of the loop is reversed, and the radiated electromagnetic waves are therefore shifted by exactly 180° in phase. Portable Crystal Radio using Loop Antenna and Pizza Box by RimstarOrg 7 years ago 5 minutes, 42 seconds 45,882 views. It is designed for portability, and can be assembled or disassembled in about a minute. The YouLoop is a generalization of the Möbius loop where a balanced electric shield is used as the center of a multi-turn loop. QRP HF Loop Antenna Here is a circuit of simple HF Loop antenna suitable for QRP operation on all bands from 1. Formula for length of full wave loop The formula for a calculating the length of a full wave loop antenna is: Length (feet) = 1005/f MHz. Although this design has been around for a long time, it is only gaining popularity now due to the recent improvement in high power antenna tuners. It's a bigger antenna but good results, about 2 dB more gain then a dipole. I also saw Tony VK3CAT's AlexLoop and thought it would be fun to try and make my own as an interesting alternative antenna for SOTA. 68 - Two-Bands Half Sloper for 80m - 40m. Delta Loop is a three-sided antenna suspended high in the air by vertical supports, such as tall evergreen trees. DRM converter used in a Yaesu FRG-100. garage or in the field anywhere I wanted. A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands. Large Loop Antennas The delta-loop antenna is a superb example of a high­ performance compromise antenna. Search refinements. The direction of fire is broadside to the antenna. Cross Country Wireless have released a HF Active Loop Antenna with a frequency range of 200 kHz to 70 MHz with extended coverage up to 148 MHz. Receive Antenna Total Weight:8. The problem was to compare the performance of a Chameleon CHA F-Loop Antenna, a 0. Experiment with full-wave loops. Up until now everything that I've posted has been strictly about writing and author related topics. Printed Loop Model A printed square loop antenna as illustrated in Fig. 5 to1 balun hang-n-go AIRPLANE WWII AND 1940'S 1950'S AIRCRAFT LOOP ANTENNA. Those 2 designs are using the same base type of antenna: the loop antenna. Loop antenna can be built to tune to just about any frequency you desire, almost independent of its surroundings. 8MHz to 29MHz. The built in Tuner is protected by the loop on its heavy duty mount. These antennas are great for expanding your wireless network and improving your broadcasting or receiving stations. 00 Ex Tax: £235. Capacitor: MFJ-19 Butterfly Type (12-67 pFd) Voltage Rating: 5. Tecsun AN-200 AM/MW Rotatable Tuneable Loop Gain Radio Antenna(No Battery Needed) 4. Each mode can be switched immediately and this enables us to use the best antenna for the moment. Specialists in Broadband Loop Technology. It is a wonderful AM loop antenna for most available AV receivers on radios, exceptionally sharp AV receivers. 10-80 Meter Alpha Loop, 100W 10-40M, 20W 40-80 magnetic. It's a light magnetic loop antenna calculator that run on MS Windows, and allow to calculate capacitor values and voltage based on Loop circumference, conductor diameter, desired resonant frequency and the operating power. Many new slots in 10m band plus new one DXCC’s and rare IOTA’s. The antenna has smaller dimensions, but high efficiency in order to compete with the classic dipole. The tuned loop antenna is more effective as a shortwave antenna when its width/height dimensions are a larger portion of the wavelengths it is intended to be used for. They are triangular, circular, elliptical, and square shape antennas. Loop Antenna Amplifier + High Z Antenna Amplifier. Thanks for the inspiration! Like Like. Active Loop Antenna ALA1530LF. 65 - Inverted-V Beam Antenna for 30m. Loop antennas are conductors bent into the shape of a circle or a rectangle with a gap in between for terminals. Next it describes several types of unique magnetic loop antennas, while the final part is devoted to the independent evaluation of magnetic loop. The Alford loop antenna is constructed of four half-wave elements as pictured above, folded and arranged so that the element midsections form a square. Large Loop Antennas The delta-loop antenna is a superb example of a high­ performance compromise antenna. Mizuho UZ-8DX Loop Antenna For Sale. Supplied to professionals and radio amateurs alike. pdf 381KB download) Rotaries- Flag vs. Mine is fed with commercially purchased 450 ohm ladder line to a DX Engineering 4:1 balun, I tune it with a Palstar AT2KD, and run a Yaesu 2000D barefoot. The antenna employs a plurality of interconnected conductive loops which are magnetically coupled to a conductive structure. The amplifier has four remotely switched modes: Loop A, Loop B, crossed parallel loops A&B and dipole. Loop Antennas Professional [Books] Loop Antennas Professional When somebody should go to the books stores, search instigation by shop, shelf by shelf, it is essentially problematic. txt) or read online for free. The finite size of the loop is causing "filling" the zero at zenith. Did more in-depth reading on magnetic loop antennas and have decided not to move forward on building one. This forms a parallel resonant circuit which, if the component values are correctly chosen, can be tuned across the band of frequencies we are interested in. Loop antennas are of two types. In Ithaca, the rectangular loop measures 100 ft by 150 ft, with no balun; a quarter wave length matching section of DX Engineering RG-11/U 75 ohm coax of 103 ft reduces the approximate 100 ohms antenna impedance to 50 ohms. 5-inches for 1/4-in Copper Tubing and 16. Designed by KE4ERO, this is a novel antenna for VHF and UHF bands. Therefore, the positioning of the rear antenna connectors and the PVC top mount are identical on all models so the optional MFJ-58B Cross Antenna Kit (more discussion below) will fit all the different. The loop antenna was relocated 1 August 2011. 071-1098-00. Loop antennas can work on other frequencies also but need some modification because of the frequency property differences. The efficiency is fairly poor on 40 metres and even somewhat marginal on 20, but on the higher bands it is an exceptional antenna. The 40m Loop antenna Ed, VK2JI (This antenna is also known under the names "Sky Loop" and "DX-Buster" and is very similar to a horizontal delta loop). The VHF Loop kits offered here are an excellent antennas in their own right, providing for a very small antenna with very respectable performance. 6m Band HO Loop Antenna Our new HO LOOP is a result of a continued evaluation and development on reduced size, omnidirectional HORIZONTALLY polarized loops. 4o 3 I o2 S. Adventures with an 80 Meter Loop Antenna, Part 1 Some years ago while I was dating the woman who would become my wife, I thought about setting up a station at her home in Nevada City, California, that I could use when I visited her. Click here for Active Antenna Amplifier Ham Kit. See, for example, [1]. The MFJ-1786 Magnetic Loop Antenna Well, I bit the bullet today and placed my order with MFJ for an MFJ-1786 magnetic loop antenna. The shape does not matter as it is the area of the total number of turns that determines the strength of the signal - Circular giving the largest area for a given length of wire, but if it is easier to make a rectangular or any other shape, You. AS-SAL-20 Mark II-DX - Shared Apex Loop Array. It is roughly 475 feet long and fed with 450-ohm ladder line. At the heart of every radio and MLA (Magnetic Loop Antenna) is the resonant circuit. Since I have varied interests, such as ham radio, bicycling and hiking, for example, I'll be. In the first couple hours of having it up I was able to hear stations I could not hear before. The reason for this interest was that my son (2E0KGG) had moved to a new QTH and to help get him active on one or more of the HF bands we needed an antenna design that was suitable for use indoors or on a balcony. I was listening to my AK model 40 radio the other day and was getting decent reception with lots of static. If you make the loop much longer than 1/10th of a full wavelength, it turns into a different type of antenna (specifically one that has both voltage and current nodes) and you will start to lose your nulls and the directivity. 40m Delta Loop Antenna Several members of the Nashua Area Radio Club recently got together to help one of our members to put up a 40m Delta Loop antenna. All you need to gather is, a few discarded equipments and you can put together your own TV antenna. Although this design has been around for a long time, it is only gaining popularity now due to the recent improvement in high power antenna tuners. Here is a simple antenna design that is effective from 3 to 22 MHz. Open Loop Antennas. In a magnetized plasma, we have excited whistlers with pulsed loop antennas and measured the wave magnetic field B(r, t) from the near zone into the far zone in 3-D space and time. It is oriented in the east to west plain. The copper tube used for the gamma match is 1/4" outside diameter. HORIZONTAL LOOP ANTENNA CONSTRUCTION. Very close to a small loop antenna (but not necessarily near the open ends of the small loop where the tuning capacitor is) the magnetic field. Free-Standing with Fold-Out Base. A delta loop fed from the bottom or top is horizontally polarized and can be vertically polarized by feeding it from a corner at the base. Loaded Loop Antenna (80- 10 m) Low Height Narrow Delta Antenna for the 80, 40, 20 and 15- meter Band. Circularly polarized antennas are complex structures in general because they are constituted by two or more antennas in multilayer structures or employ phase-shifting circuits. Loop Antennas Professional [Books] Loop Antennas Professional When somebody should go to the books stores, search instigation by shop, shelf by shelf, it is essentially problematic. It is well known that the loop. The small loop antenna is a closed loop as shown in Figure 1. A preamplifier is built into the base and provides a 50-ohm output. Coaxial cable losses are so minute at 60 KHz, that the preamp if needed can be located inside away from the elements, close to the power supply, with easy access. between large antenna systems such as multiple Beverages, and small loops and other compact antennas, including flags, pennants, EWEs, tuned loops and others. - - Photo courtesy of N4IS - - Waller Flag Common Mode Chokes by N4IS (. A loop antenna is a type of a radio antenna, which consists of a loop (circular electrical conductor) with ends connected to the transmission line. 9 kV peak voltage. It has a relatively small profile and can even be kept below fence level and still perform wonderfully. ) Conclusions. Many new slots in 10m band plus new one DXCC’s and rare IOTA’s. Electrical circuit of this active antenna board based on high impedance differential amplifier wired across the loop. The Deluxe PreciseLOOP® HG-1 is a high gain Magnetic Loop Antenna (MLA) for receive and transmit use. A loop antenna consists of a wire loop of arbitrary shape fed by an input current I in. Here's one made from 1 inch copper tubing. The loop is of a size that can be mounted inconspicuously against a garden fence away from household interferences. Recently Chinese manufacturers have begun producing a low cost wide band (100 kHz - 30 MHz) magnetic loop HF antenna known as the MLA-30. Heavy duty aluminum construction. All Consumer Electronics (17) Radio Communication (12) Antennas (11) Ham, Amateur Radio Antennas (9) Other Radio Antennas (2) Business & Industrial (4) Format see all Format. 6m Band HO Loop Antenna Our new HO LOOP is a result of a continued evaluation and development on reduced size, omnidirectional HORIZONTALLY polarized loops. The two above pictures show the radiation pattern of the Delta Loop fed in the bottom corner of the antenna. Please practice hand-washing and social distancing, and check out our resources for adapting to these times. For outstanding directional radio reception of medium wave, long wave and short wave DX.
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