Keyboard Shortcuts
ctrl + shift + ? :
Show all keyboard shortcuts
ctrl + g :
Navigate to a group
ctrl + shift + f :
Find
ctrl + / :
Quick actions
esc to dismiss
Likes
- Loopantennas
- Messages
Search
|
Locked
File - Links.txt
Active AM Antenna With Twin Coil Ferrite by C. Crane Co.
JLKolb?s antenna links including the KRS AA-1 Active Antenna schematic, antenna preamplfiers, center-tapped loops, and a dual gate FET preselector. Directional Terminated MW/LW Loop by WellBroook (UK) K9AY is the Remote Controlled Variable Termination; Provides a Cardioid Reception Pattern with up to 30dB Gain Front-to-Back; Uses Two Delta Loops. Kiwa - High Performance MW Air-Core Loop Antenna High Performance MW Air-Core Loop Antenna by KIWA Palomar Engineers Loop Antennas LW-MW-SW2 Palomar's Loop Antenna gives superb performance on the AM medium-wave broadcast band. The loop rotates and tilts to give deep nulls so you can eliminate local interference. It also allows you to null out a station and listen to another one on the same frequency. The Quantum loop antennas, now V2.0 Terk AM loop at Amazon.com Here is a place you can buy yourself a TERK AM loop antenna, even some other stuff that is kind of off topic to talk about. 73 WL1030 by the late Maartenhagg. Plans placed on this website by his friends in his honor. C Crane Company They sell the Justice AM Loop Antenna, Select A Tenna, Terk AM 1000 Kiwa Electronics Kwia makes the best products for you and your radio equipment, and also improves things that needed improvement a long time ago. Stormwise Ferrite Rods Get some huge ferrite rods and a converter to go along with its, heck it even comes with project book. Universal Radio Company They sell all sorts of loops big and small for LW/MW/SW and VLF also 10 kHz to 15 MHz ALA-1530 Find the best UK LF/MF antenna here. AOR This is the site that sells the AOR loop Kiwa Electronics The maker of the air core loop antenna and other useful items that you may want on your wish list. LF Engineering Company A group of engineers, who make products for VLF/LF listening even ELF loops! Select A Tenna by Intensitronics Corp The maker of the select A tenna, a great AM loop antenna that is a little bigger than the terk discontinued Terk Technolegies The maker of the best sold AM and I use also called the AM-1000 AM loop antenna, there is also technical information on how it works. Torus Tuner Loop Company A very specially made loop that is almost as big as a hula hoop discontinued GRAHN (Germany) Specialized Loop Antennas for MW and SW Reception Contributed by radiohighfreq Grahn offers both Ferrite Rod Antennas and Shielded Loop Antennas. Translated from the Gremany Language Webpages here is the "Grahn Specialized Loop Antennas for MW and SW Reception" ULR Address: Use the Google Translate a web Page Tool to convert these webpages to English. When considering AM Loop Antennas . . . - - - It all comes down to Time? & Money? How much Time? Are you going to be 'using' the Loop Antenna for DXing or simply for "Better" AM Radio Reception (Sports/Talk Radio Loop). How Much Money? Are you willing to spend for a Loop Antenna to get the kind of better reception you want. TBL: Time and Money translates to the AM Loop Antenna's Value to You. The average radio listener (97%), who wants better AM Radio Reception, can spend $100 or less and get an AM Loop Antenna that meets their needs. Here is a brief list of the more common AM Loop Antennas for $100 or less. * Twin Coil Ferrite AM Loop Antenna (Active) - - - * Torus Tuner 27" Loop Antenna (Passive) - - - discontinued * Select-A-Tenna Model #541M (Passive) - - - discontinued * Terk AM Advantage Loop Antenna (Passive) - - - * RadioShack AM Loop Antanna # 15-1853 (Passive) - - - Discontinued (Find 'used' on eBay) * MTM Scientific AM Radio Loop Antenna (Passive) * - - - Starter Kit, Deluxe Kit or Finished Antenna! * * * Home made 'Box' AM Loop Antennas - Usually 20" to 24" in size - - Generally a simple Passive antenna - - - Can be made Active with an add-on amplifier #1. * Justice AM Loop Antenna (Active) - - - discontinued#2. * Torus Tuner 27" Loop Antenna (Passive) - - - website gone#3. * Select-A-Tenna Model #541M (Passive) - - - website gone#4. * Terk AM Advantage Loop Antenna (Passive) - - -#5. * RadioShack AM Loop Antanna # 15-1853 (Passive) - - - Discontinued (Find 'used' on eBay) #1.a. Kiwa MW Air Loop Antenna #1.b. Quantum Loop Antennas . . . #3. Palomar Loop Antenna Basic Wire Back Yard Loop Antennas Full-wave loops are very popular antennas. They are especially useful on 80 and 40 meters where they perform well at modest heights. These are closed loops that are one full wavelength long. Horizontal loops may be fed at any convenient spot. For best performance, make your horizontal loop into a square, especially if it is to be used on several bands. K9AY: How to Build the K9AY Loop Receiving Antenna AY Technologies Antennas by K9AY. Excellent Antenna for Medium Wave Frequency DXing. Six Foot Square by Six Turn Loop Antenna New Mid-Size Loop Antenna by Graham Maynard with Matching Balanced Amplifier: Frequency Range 50KHz - 5000KHz. Ten Foot Receiveing Loop for Low-Frequency DXing A Page out of VE7SL's Note Book. This 10 Ft. Air-Core Receiving Loop was originally designed and constructed for NDB DXing and now is used for LOWFER DX work. Dave's HomeMade Loop Antennas This is the loop antenna my dad built in 1958. Although I was only 8 years old at the time, I knew what this was for and how it worked. WebSite/Pages produced by Dave Schmarder Page Contributed by radiohighfreq 4 Foot Box loop antenna Heres a 4 foot loop project by Bruce ATL-3 Loop Antenna by Graham Maynard (UK) Loop & Amp Project: ATL-3 Loop Windings are in the Shape of a Five 26" Sided Spiral Alt-Azimuth Wooden "HOOP LOOP" Antenna by Linus The Great Pumpkin" Speaks on "How To Make" a Loop Antenna from a Wooden Embroidery Hoop. Read the Exciting Saga of his journey in to the Kingdom of Hooppy-Looppy-Dom presented by RadioIntel.Com. DXers Tool Box - DIY - Tuned Loop Antenna The DXers Tool Box "How To Build" a Tuned Loop Antenna = How can you vastly improve your Medium Wave reception? The antenna consists of an LC (tuning) circuit formed by the air-core loop and a tuning capacitor. Embrodary Loops While these loop are for crafts, they can be a craft of art for improved AM radio reception! Hard Core DXing Here's what nordic dx has to offer in their discription of loops in this website K5DKZ - Three Foot Box Loop Antenna Kit Complete Parts and Plans for a 3 Ft Box Loop Antenna "Kit" ~$85+SH KIT -by- MTM Scientific, Inc. -for- AM Radio DX Loop Antenna KIT =//= Designed to Build an AM/MW Radio DX Loop Antenna =//= Offered by MTM Scientific =//= Deluxe Loop Antenna Kit: Includes ALL the Hardware for Building this AM/MW Radio DX Loop Antenna. Long LoopStick Antenna for MW DXing Wound on a Three (3) Foot Length of PVC pipe, the "Long LoopStick Antenna" was an experiment to try to improve AM radio reception without using a long wire or ground. TL Loop Receiving Antenna 10 KHz - 30 MHz The principle of operation is that an rf voltage appears across the terminals of a loop when it is placed in an electromagnetic field. The voltage is proportional to frequency for a given field strength and so at Very Low Frequencies the voltage is very small and requires greater amplification but it is not quite as simple as that. The new TL Loop uses a unique feedback system to optimise the amplification/noise factor over a much wider range than has been possible hitherto. W2BRI Xmit Loops Contributed by n3hkn Ham Radio xmitting loops. Detailed plans and reports from Hams experiences. Typical cost is $50 for pipe, capacitor, motor. "AM Loop Antenna Calculator" - by Bruce Carter Here is a Great Tool for those Loop Antenna => "What Ifs...." "Loop Antennas 101" Read This First Minnesota DX Club's Loop Antenna's web page that is a 'Must Read' =Says It All= A Starting Point Class 101- - - TOPICS: Principles of the Loop Antenna - What is a Loop and Why Use It - Construction Principles - What Can I Use a Loop For - Loops Another Look - Pictures of Home Built PVC loops - Loop Links * NEW => 2002 AM Loop Antenna Construction "Tips" by Bruce Carter Introduction / Why Another Loop Antenna Page? / Mathematics of Rectangular Loop Antennas / Construction Articles / Loop Antenna (and Related) Links Loop Antennas at Hard Core DX TABLE: Number of Turns -v- Size of Loop in the Middle of this webpage. Loops and Rods =&= The Ferrite Rod Antenna Theory / Formulas / Drawings = The use of a small Magnetic Loop as an antenna. The ferrite has the effect of intensifying the magnetic field inside the loop. Modify the common AM Radio Loop Antenna Hard-Core DX & Nordic DX = Topics: Install Larger Ferrite Rod - Fix External Antenna -Add a Long Wire - Or a Loop - Construct it - Connect it - Add an Amplifier. Presented by Bruce Carter Sensitivity of Multi Turn Receiving Loops LWCA - Multi turn wire loops are often used as low frequency receiving antennas. Basic electromagnetic theory is developed here as it relates to electrically small multi-turn loops at low frequencies. - Presented by William E. Payne, N4YWK Using the Small Loop Antenna by Joe Carr DXing.Com presents Joe Carr's Radio Tech Notes: Eight Page PDF Document provided by Universal-Radio.Com How to Get Better AM Radio Reception Features Loop Antennas and much more. The Antenna is 90% of Your Radio. Still Need More Signal? Try a Better Antenna. Introduction to Broadcast Band AM/BCB/MW DXing The International Radio Club of America (IRCA) WebPages ** Radio-Antenna-PRO ** H.Hertz-Forum Remember you may need some Russian Text software for this groupThe international forum for radioengineers, scientists and hams. All about radioelectronics, radiocommunications, radiophysics, electrodynamics. About 250 members from 20 countries. In Russian language. Very active. Lot of interesting researches and discussions. Radio DXing with The Interference Problem This is great for that annoying problem you have with your loop antenna, and you may think its the loop, think again it could be that messed up street light, next doors dimmer switch, and other something else you can't probably solve with just a loop antenna. "3805er" 80-Meter balanced coax loop Small shielded rx only loop for 80 meters Magnetic Loop Antennas Receiving - by W8JI This WebPage's Topic Are: - Small Receiving Loops - Loop Antenna Fields - Dipole Antenna Fields - Radiation - Loop Shielding and Balance - by W8JI Radiation and Fields (Magnetic Loop Antennas) - by W8JI This WebPage's Topic Are: - Electric Field - Magnetic Field - ElectroMagnetic Field - Near the Antenna - Losses - Near Field - Fresnel Zone - Farfield - Summary - by W8JI Shielded-Loop Receiving Antenna by N5FC Shielded-Loop antennas have some nice properties that make them desirable as portable receiving antennas. Antique Electronic Supply A sorts of older variable tuning capacitors for your loop antenna that needs one bad. Fair Radio Sales A wide variety of electronic components, radios, and variable capacitors for your loop antenna Ocean State Electronics Rhode Island's best selection for a wide variety of the best tuning capacitors for reasonable price, tell them that electronicdx (Adam Ebel) sent you. The Crystal Set Society Here are some capacitor available from a club that devotes to Crystal Set Radio The Surplus Sales of Nebraska This surplus store based in the state of Nebraska, has the one you might need, but they have minumim order policy Dan Small Parts and Kits Dan's wide selection from Canada. American Science and Surplus A big spool of wire here just about for AM DigiKey.com For ribbon cable and other sorts of wire. Femco Magnet Wire Femco Magnet Wire is a joint venture company that has been supplying round insulated copper magnet (winding) wire to the transplant market since 1988. Litz-Wire,com Welcome to Litz-Wire.com! MCM electronics They do sell wire and magnet wire here MWS Industries A place for all sorts of wire for business and industry Magnet Wire from Radio Shack This is what I use often Mouser Electronics Mouser has the biggest spools here for a great price, that makes sense Ocean State Electronics magnet wire at a good price WIRE "Flex-Weave" Antenna Wire "Flex-Weave" is a hybrid aerial wire that consists of 168 strands of woven #36 solid copper wires that provide high strength and extreme flexibility. The most popular version of "Flex-Weave" is the 'equivalent' of #14 AWG wire size. It can be 'used' for unsupported spans up to 200 ft (100-150 ft in areas with high ice and wind loading). WIRE "QuietFlex" Antenna Wire by Antennas & More: Insulated, Strong, Flexible and Durable "QuietFlex" Antenna Wire by Antennas & More: "QuietFlex" #14 AWG Wire has more than 41 Strands tightly twisted together under its Flexible Insulation making it both Strong, Flexible and Durable. Scanning, Ham Radio and Public Safety Resources - Links to the various webpages with resources for the Ham Radio Operator and Scanning Enthusiast. Resources such as; Monitoring Police and Fire Communications, What Antennas to use, Secret Scanner Frequencies, Radio Programming Software, Radio Mods and Operating Tips, Professional resources for Public Safety Management, Guidance and Self-Help. Amidon Ferrite rods, bars, plates, and tubes. Bytemark Ferrite rods, bars, plates, and tubes. |
|
Locked
File - UploadingFilesLinksPhotos.txt
If you have a link relevant to the group, please post it in the Links section. If you just put it in a message, it will get lost in the shuffle after a few days. The coverage of the list is pretty broad.
All members can upload Links, Files, and Photos. A few guidelines: Try to place them in the proper folder, if it exists. If not, you can either just put it in the root folder and eventually I'll move it into the proper place, or create a folder. When creating a folder or uploading a file or photo, please don't use spaces or punctuation. You can either use caps for the first letter of each word, or use underscore as a space. Like this: "4x8Loop" or "4x8_loop" or "Steves_4x8_Loop" Not like this: "Steve's 4 x 8 Loop." That goes for Folder names and File names. A special note about the Photos section: Please crop in to the important parts. For photos, JPG saves smaller and looks better, for line drawings GIF is smaller and looks better. Please do not use TIFF/TIF or BMP files, the file size is way too big and I may delete without notice. Feel free to ask if you need help figuring out how to crop and resample. Irfanview is a fairly easy to use program that loads just about any file, you can crop and resample from there: Or for more complex stuff, another free program is GIMP: Attachments are now allowed, but please use judiciously. Rather than going out with the messages, they will be stored on the list but you'll get a link with the message. A last note: if you see something in any folder or in the messages that looks like spam or simply inappropriate, don't post on the list- email me directly and tell me about it and I'll take care of it with a minimum of fuss. loopantennas-owner@... Thanks, Steve Greenfield |
|
Locked
Re: Difficulties aside, best design placement of all the components of the Magnetic Loop
Craig F. Simmons
I am currently gathering all the parts to make a remote tuned 15-40 meter loop antenna similar to an Alpha loop except the design will have some improvements for my use and tastes. This will be for portable use but not necessary ¡°portable as in an Alex loop or Alpha loop antenna system. ?Mine will be made out of common found aluminum strips, small inductance loop at top, tuning capacitor at bottom connected by non-conductive shaft to DC motor/reduction gear. I will connect the tuning capacitor by ? non-conducting shaft to DC motor/reduction gear well below the elevated loop using ? universal couplings and ? nylon bearing flange mounted. This will allow there to be free movement in the shaft and make it easier to mount with less stress on the whole system. This also allows the dc motor to be removed away from the RF field of the loop. This will take more time to set up, weigh more and be less portable due to components and size of space needed to pack. It will also be a lot more users friendly and easier to operate, change bands and get more precise tuning due to no proximity effect of manual tuning. I do mostly portable HF, without the worry of equipment needed, like field day. For strictly fast set up and portable HF, I do not believe there is much improvement that could be made to the Alpha loop or the Alex loop for what they are intended for use. When complete I will post pictures and step by step details. My main problem with current loops is they are the design for portable, quick set up and light weight. With these design requirements in mind it limits there construction.? These same thoughts have me planning two big loops I want to build for permanent use for 160 and 75 meters. I will never have the real estate or the towers, tall trees to put up a proper large wire loop or wire antenna for those bands and from several articles I have read, a proper single band loop with vacuum variable capacitor makes a great antenna for these bands.
|
|
Locked
Best placement of all the components of the Magnetic Loop
Craig F. Simmons
?
I was hoping for some detailed discussion on the best/ideal location of the tuning capacitor, (motor if remotely tuned) and coupling loop/RF feed method. All pose design problems and considerations weather it is permanent mounting or use or portable and supply's needed or on hand. But if all these things aside , what would be the best RF configuration of the loop. Most portable loops have the tuning capacitor at the bottom for obvious reasons and the RF feed point at the opposite side (Top) of the loop. What comes to mind is the coax crosses the RF path to the transceiver. If you reverse this and place the tuning at the top this makes it more difficult to tune the antenna and also makes it more difficult to keep from interfering with the loop while tuning. Now if you consider the point of the tuning capacitor has the most RF this removes it from the operator and possibly helps with the signal/RF being at a higher point. If you use remote tuning in this configuration, this removes the interference from the equation but possible RF problems being so close to the motor-and this too may cause interference. In theory, and I am just guessing, you could put just the capacitor at the top, RF feed at the bottom and maybe use some kind of non conducting shaft from the capacitor down to below the loop, away from the RF field to a motor, this seems to me an ideal set up. This of course is not good for portable but maybe just design ideal. Please i know there are a lot of experience persons that have tried or maybe tested some of these different configuration, we would all benefit from the knowledge. Thank you |
|
Locked
Re: Difficulties aside, best design placement of all the components of the Magnetic Loop
There is a third approach to the design of a remotely tuned transmitting loop antenna that does away with the expensive vacuum variable capacitor and the coupling loop: I'm presently looking at a variation that requires a single variable capacitor instead of the ganged dual. Chris Trask N7ZWY / WDX3HLB Senior Member IEEE |
|
Locked
Difficulties aside, best design placement of all the components of the Magnetic Loop
I was hoping for some detailed discussion on the best/ideal location of the tuning capacitor, (motor if remotely tuned) and coupling loop/RF feed method. All pose design problems and considerations weather it is permanent mounting or use or portable and supply's needed or on hand. But if all these things aside , what would be the best RF configuration of the loop. Most portable loops have the tuning capacitor at the bottom for obvious reasons and the RF feed point at the opposite side (Top) of the loop. What comes to mind is the coax crosses the RF path to the transceiver. If you reverse this and place the tuning at the top this makes it more difficult to tune the antenna and also makes it more difficult to keep from interfering with the loop while tuning. Now if you consider the point of the tuning capacitor has the most RF this removes it from the operator and possibly helps with the signal/RF being at a higher point. If you use remote tuning in this configuration, this removes the interference from the equation but possible RF problems being so close to the motor-and this too may cause interference. In theory, and I am just guessing, you could put just the capacitor at the top, RF feed at the bottom and maybe use some kind of non conducting shaft from the capacitor down to below the loop, away from the RF field to a motor, this seems to me an ideal set up. This of course is not good for portable but maybe just design ideal. Please i know there are a lot of experience persons that have tried or maybe tested some of these different configuration, we would all benefit from the knowledge. Thank you |
|
Locked
Re: N6RK Remote Tuned Loop Experience
Have a look at this article - It might give you some ideas. Tony VK2IC73 On Fri, Mar 14, 2014 at 12:59 PM, <kb8nty@...> wrote:
|
|
Locked
N6RK Remote Tuned Loop Experience
To the group; I am planing to purchase a receive loop antenna tuning network from N6RK Rick. Certainly not to question him or his talents. Already having a shielded coaxial loop, this would be the antenna tuning network, and the remote tuning box to assemble and connect to my loop. Of course this is a well received proven type of receiving antenna published in the NCJ magazine some years ago. I was just curious has anyone either purchased or built this exact system? If so wondering how it may have worked out for you, or did it? Respectfully I am not interested in the different types of receiving antennas. EWE's K9AY, beverage ETC. ETC.that you may have found to be better. I am more so very interested in your experiences and opinion of this specific remote-tuned loop. How has it performed, did it, how did you mount it, how high, how close to your transmit antenna,use a rotor ETC.? By means of severe space restriction, it is this type of receiving antenna I am selecting, and have specific only interest in and wanted to learn from anyone who may have any actual experience with. Thank you very much in advance for any potential replies, advise and help. 73 Ross ?KB8NTY |
|
Locked
New Yahoo User Group *All about RF Ground Radials*
Just wanted to share information of a new Yahoo user group. It is specifically for RF Ground Radial talk...Anything and everything about "ground radials" A public group so registering and waiting for approval just to take part is not required! Stop by to check it out, join in and share your experiences or ask for help! -73- Ross? KB8NTY |
|
Locked
Re: Antenna Modeling Software
Couldn't get it to work on XP or Win 7 64 bit due to mclmcrrt71.dll can't be located, even tho' it was installed
Graeme |
|
Locked
Antenna Modeling Software
Does anyone have any experience with AN-SOF Professional antenna simulation software <http://www.antennasoftware.com.ar/>?? Aside from price, is it any better or worse than EZNEC, 4NEC2, MMANA-GAL?? What are your experiences and suggestions?
73 Dave - AC2GL |
|
Locked
Antenna efficiency: Comparing the Alpha Loop & Alex Loop
Antenna efficiency: Comparing the Alpha Loop & Alex Loop I have spent much time inputting all of the variables into??for the bands that are safe to operate both the Alex and Alpha Loop on, and found why the Alpha Loop has more gain. The measurements from Alex for his loop are Length of Conductor (antenna "circumference") = 10.3 feet & Diameter of Conductor .32 inches. Here are the calculated efficencies for the Alex and Alpha Loop antenna's. Please not that the Alpha Loop's measurements are Length of Conductor = 9.92 feet & Diameter of Conductor = .477 Antenna efficiency - The Alpha Loop VS the Alex Loop From 7 to 7.3 MHz Alpha Loop; 8% - 9% Alex Loop; 6% - 7% From 10.1 to 10.150 MHz Alpha Loop: 23% - 23% Alex Loop: 18% - 18% From 14 to 14.350 MHz Alpha Loop: 48% - 50% Alex Loop: 41% - 43% From 18.068 to 18.168 MHz Alpha Loop: 69% - 70% Alex Loop: 63% - 63% From 21 to 21.450 MHz Alpha Loop: 79% - 80% Alex Loop: 74% - 76% An alarming find when I input Alex's measurements for his loop into??for 10 through 12 Meters occurred. On those frequencies a RED message appears that says:? "To avoid self-resonance, the conductor length for a small transmitting loop antenna should be less than 1/4 wavelength." I now understand why the AlexLoop should not be used on 10 & 12 Meters, which is because exponential increases in resistance will occur on a small transmitting loop when self-resonance occurs, which can damage equipment.? For more information on this, see the section titled "Inductance and self-resonance" here:? |
|
Locked
Re: Box Loop Antenna Rewind?
There is a lot of info out there if you dig for it. In no particular order:
Any ebay auctions from have a lot of information plus he's a reliable seller. etc. etc. etc. |
|
Locked
Re: Box Loop Antenna Rewind?
Doing some quick research on Litz wire and loop antennas, it appears that solid wire is better than stranded and litz wire is the best of all for various technical reasons having to do with electron spin and skin currents.On paper if you use Litz wire the "Q" of the loop should improve and the sensitivity increase. 175/46 type wire seems to be the most recommended size to use. Question is, is the improvement to the loop worth the time and expense to do it and will we snag more DX with the Litz wire loop. Anyone ever done this and have real world comparisons?
|
|
Locked
File - Links.txt
Active AM Antenna With Twin Coil Ferrite by C. Crane Co.
JLKolb?s antenna links including the KRS AA-1 Active Antenna schematic, antenna preamplfiers, center-tapped loops, and a dual gate FET preselector. Directional Terminated MW/LW Loop by WellBroook (UK) K9AY is the Remote Controlled Variable Termination; Provides a Cardioid Reception Pattern with up to 30dB Gain Front-to-Back; Uses Two Delta Loops. Kiwa - High Performance MW Air-Core Loop Antenna High Performance MW Air-Core Loop Antenna by KIWA Palomar Engineers Loop Antennas LW-MW-SW2 Palomar's Loop Antenna gives superb performance on the AM medium-wave broadcast band. The loop rotates and tilts to give deep nulls so you can eliminate local interference. It also allows you to null out a station and listen to another one on the same frequency. The Quantum loop antennas, now V2.0 Terk AM loop at Amazon.com Here is a place you can buy yourself a TERK AM loop antenna, even some other stuff that is kind of off topic to talk about. 73 WL1030 by the late Maartenhagg. Plans placed on this website by his friends in his honor. C Crane Company They sell the Justice AM Loop Antenna, Select A Tenna, Terk AM 1000 Kiwa Electronics Kwia makes the best products for you and your radio equipment, and also improves things that needed improvement a long time ago. Stormwise Ferrite Rods Get some huge ferrite rods and a converter to go along with its, heck it even comes with project book. Universal Radio Company They sell all sorts of loops big and small for LW/MW/SW and VLF also 10 kHz to 15 MHz ALA-1530 Find the best UK LF/MF antenna here. AOR This is the site that sells the AOR loop Kiwa Electronics The maker of the air core loop antenna and other useful items that you may want on your wish list. LF Engineering Company A group of engineers, who make products for VLF/LF listening even ELF loops! Select A Tenna by Intensitronics Corp The maker of the select A tenna, a great AM loop antenna that is a little bigger than the terk discontinued Terk Technolegies The maker of the best sold AM and I use also called the AM-1000 AM loop antenna, there is also technical information on how it works. Torus Tuner Loop Company A very specially made loop that is almost as big as a hula hoop discontinued GRAHN (Germany) Specialized Loop Antennas for MW and SW Reception Contributed by radiohighfreq Grahn offers both Ferrite Rod Antennas and Shielded Loop Antennas. Translated from the Gremany Language Webpages here is the "Grahn Specialized Loop Antennas for MW and SW Reception" ULR Address: Use the Google Translate a web Page Tool to convert these webpages to English. When considering AM Loop Antennas . . . - - - It all comes down to Time? & Money? How much Time? Are you going to be 'using' the Loop Antenna for DXing or simply for "Better" AM Radio Reception (Sports/Talk Radio Loop). How Much Money? Are you willing to spend for a Loop Antenna to get the kind of better reception you want. TBL: Time and Money translates to the AM Loop Antenna's Value to You. The average radio listener (97%), who wants better AM Radio Reception, can spend $100 or less and get an AM Loop Antenna that meets their needs. Here is a brief list of the more common AM Loop Antennas for $100 or less. * Twin Coil Ferrite AM Loop Antenna (Active) - - - * Torus Tuner 27" Loop Antenna (Passive) - - - discontinued * Select-A-Tenna Model #541M (Passive) - - - discontinued * Terk AM Advantage Loop Antenna (Passive) - - - * RadioShack AM Loop Antanna # 15-1853 (Passive) - - - Discontinued (Find 'used' on eBay) * MTM Scientific AM Radio Loop Antenna (Passive) * - - - Starter Kit, Deluxe Kit or Finished Antenna! * * * Home made 'Box' AM Loop Antennas - Usually 20" to 24" in size - - Generally a simple Passive antenna - - - Can be made Active with an add-on amplifier #1. * Justice AM Loop Antenna (Active) - - - discontinued#2. * Torus Tuner 27" Loop Antenna (Passive) - - - website gone#3. * Select-A-Tenna Model #541M (Passive) - - - website gone#4. * Terk AM Advantage Loop Antenna (Passive) - - -#5. * RadioShack AM Loop Antanna # 15-1853 (Passive) - - - Discontinued (Find 'used' on eBay) #1.a. Kiwa MW Air Loop Antenna #1.b. Quantum Loop Antennas . . . #3. Palomar Loop Antenna Basic Wire Back Yard Loop Antennas Full-wave loops are very popular antennas. They are especially useful on 80 and 40 meters where they perform well at modest heights. These are closed loops that are one full wavelength long. Horizontal loops may be fed at any convenient spot. For best performance, make your horizontal loop into a square, especially if it is to be used on several bands. K9AY: How to Build the K9AY Loop Receiving Antenna AY Technologies Antennas by K9AY. Excellent Antenna for Medium Wave Frequency DXing. Six Foot Square by Six Turn Loop Antenna New Mid-Size Loop Antenna by Graham Maynard with Matching Balanced Amplifier: Frequency Range 50KHz - 5000KHz. Ten Foot Receiveing Loop for Low-Frequency DXing A Page out of VE7SL's Note Book. This 10 Ft. Air-Core Receiving Loop was originally designed and constructed for NDB DXing and now is used for LOWFER DX work. Dave's HomeMade Loop Antennas This is the loop antenna my dad built in 1958. Although I was only 8 years old at the time, I knew what this was for and how it worked. WebSite/Pages produced by Dave Schmarder Page Contributed by radiohighfreq 4 Foot Box loop antenna Heres a 4 foot loop project by Bruce ATL-3 Loop Antenna by Graham Maynard (UK) Loop & Amp Project: ATL-3 Loop Windings are in the Shape of a Five 26" Sided Spiral Alt-Azimuth Wooden "HOOP LOOP" Antenna by Linus The Great Pumpkin" Speaks on "How To Make" a Loop Antenna from a Wooden Embroidery Hoop. Read the Exciting Saga of his journey in to the Kingdom of Hooppy-Looppy-Dom presented by RadioIntel.Com. DXers Tool Box - DIY - Tuned Loop Antenna The DXers Tool Box "How To Build" a Tuned Loop Antenna = How can you vastly improve your Medium Wave reception? The antenna consists of an LC (tuning) circuit formed by the air-core loop and a tuning capacitor. Embrodary Loops While these loop are for crafts, they can be a craft of art for improved AM radio reception! Hard Core DXing Here's what nordic dx has to offer in their discription of loops in this website K5DKZ - Three Foot Box Loop Antenna Kit Complete Parts and Plans for a 3 Ft Box Loop Antenna "Kit" ~$85+SH KIT -by- MTM Scientific, Inc. -for- AM Radio DX Loop Antenna KIT =//= Designed to Build an AM/MW Radio DX Loop Antenna =//= Offered by MTM Scientific =//= Deluxe Loop Antenna Kit: Includes ALL the Hardware for Building this AM/MW Radio DX Loop Antenna. Long LoopStick Antenna for MW DXing Wound on a Three (3) Foot Length of PVC pipe, the "Long LoopStick Antenna" was an experiment to try to improve AM radio reception without using a long wire or ground. TL Loop Receiving Antenna 10 KHz - 30 MHz The principle of operation is that an rf voltage appears across the terminals of a loop when it is placed in an electromagnetic field. The voltage is proportional to frequency for a given field strength and so at Very Low Frequencies the voltage is very small and requires greater amplification but it is not quite as simple as that. The new TL Loop uses a unique feedback system to optimise the amplification/noise factor over a much wider range than has been possible hitherto. W2BRI Xmit Loops Contributed by n3hkn Ham Radio xmitting loops. Detailed plans and reports from Hams experiences. Typical cost is $50 for pipe, capacitor, motor. "AM Loop Antenna Calculator" - by Bruce Carter Here is a Great Tool for those Loop Antenna => "What Ifs...." "Loop Antennas 101" Read This First Minnesota DX Club's Loop Antenna's web page that is a 'Must Read' =Says It All= A Starting Point Class 101- - - TOPICS: Principles of the Loop Antenna - What is a Loop and Why Use It - Construction Principles - What Can I Use a Loop For - Loops Another Look - Pictures of Home Built PVC loops - Loop Links * NEW => 2002 AM Loop Antenna Construction "Tips" by Bruce Carter Introduction / Why Another Loop Antenna Page? / Mathematics of Rectangular Loop Antennas / Construction Articles / Loop Antenna (and Related) Links Loop Antennas at Hard Core DX TABLE: Number of Turns -v- Size of Loop in the Middle of this webpage. Loops and Rods =&= The Ferrite Rod Antenna Theory / Formulas / Drawings = The use of a small Magnetic Loop as an antenna. The ferrite has the effect of intensifying the magnetic field inside the loop. Modify the common AM Radio Loop Antenna Hard-Core DX & Nordic DX = Topics: Install Larger Ferrite Rod - Fix External Antenna -Add a Long Wire - Or a Loop - Construct it - Connect it - Add an Amplifier. Presented by Bruce Carter Sensitivity of Multi Turn Receiving Loops LWCA - Multi turn wire loops are often used as low frequency receiving antennas. Basic electromagnetic theory is developed here as it relates to electrically small multi-turn loops at low frequencies. - Presented by William E. Payne, N4YWK Using the Small Loop Antenna by Joe Carr DXing.Com presents Joe Carr's Radio Tech Notes: Eight Page PDF Document provided by Universal-Radio.Com How to Get Better AM Radio Reception Features Loop Antennas and much more. The Antenna is 90% of Your Radio. Still Need More Signal? Try a Better Antenna. Introduction to Broadcast Band AM/BCB/MW DXing The International Radio Club of America (IRCA) WebPages ** Radio-Antenna-PRO ** H.Hertz-Forum Remember you may need some Russian Text software for this groupThe international forum for radioengineers, scientists and hams. All about radioelectronics, radiocommunications, radiophysics, electrodynamics. About 250 members from 20 countries. In Russian language. Very active. Lot of interesting researches and discussions. Radio DXing with The Interference Problem This is great for that annoying problem you have with your loop antenna, and you may think its the loop, think again it could be that messed up street light, next doors dimmer switch, and other something else you can't probably solve with just a loop antenna. "3805er" 80-Meter balanced coax loop Small shielded rx only loop for 80 meters Magnetic Loop Antennas Receiving - by W8JI This WebPage's Topic Are: - Small Receiving Loops - Loop Antenna Fields - Dipole Antenna Fields - Radiation - Loop Shielding and Balance - by W8JI Radiation and Fields (Magnetic Loop Antennas) - by W8JI This WebPage's Topic Are: - Electric Field - Magnetic Field - ElectroMagnetic Field - Near the Antenna - Losses - Near Field - Fresnel Zone - Farfield - Summary - by W8JI Shielded-Loop Receiving Antenna by N5FC Shielded-Loop antennas have some nice properties that make them desirable as portable receiving antennas. Antique Electronic Supply A sorts of older variable tuning capacitors for your loop antenna that needs one bad. Fair Radio Sales A wide variety of electronic components, radios, and variable capacitors for your loop antenna Ocean State Electronics Rhode Island's best selection for a wide variety of the best tuning capacitors for reasonable price, tell them that electronicdx (Adam Ebel) sent you. The Crystal Set Society Here are some capacitor available from a club that devotes to Crystal Set Radio The Surplus Sales of Nebraska This surplus store based in the state of Nebraska, has the one you might need, but they have minumim order policy Dan Small Parts and Kits Dan's wide selection from Canada. American Science and Surplus A big spool of wire here just about for AM DigiKey.com For ribbon cable and other sorts of wire. Femco Magnet Wire Femco Magnet Wire is a joint venture company that has been supplying round insulated copper magnet (winding) wire to the transplant market since 1988. Litz-Wire,com Welcome to Litz-Wire.com! MCM electronics They do sell wire and magnet wire here MWS Industries A place for all sorts of wire for business and industry Magnet Wire from Radio Shack This is what I use often Mouser Electronics Mouser has the biggest spools here for a great price, that makes sense Ocean State Electronics magnet wire at a good price WIRE "Flex-Weave" Antenna Wire "Flex-Weave" is a hybrid aerial wire that consists of 168 strands of woven #36 solid copper wires that provide high strength and extreme flexibility. The most popular version of "Flex-Weave" is the 'equivalent' of #14 AWG wire size. It can be 'used' for unsupported spans up to 200 ft (100-150 ft in areas with high ice and wind loading). WIRE "QuietFlex" Antenna Wire by Antennas & More: Insulated, Strong, Flexible and Durable "QuietFlex" Antenna Wire by Antennas & More: "QuietFlex" #14 AWG Wire has more than 41 Strands tightly twisted together under its Flexible Insulation making it both Strong, Flexible and Durable. Scanning, Ham Radio and Public Safety Resources - Links to the various webpages with resources for the Ham Radio Operator and Scanning Enthusiast. Resources such as; Monitoring Police and Fire Communications, What Antennas to use, Secret Scanner Frequencies, Radio Programming Software, Radio Mods and Operating Tips, Professional resources for Public Safety Management, Guidance and Self-Help. Amidon Ferrite rods, bars, plates, and tubes. Bytemark Ferrite rods, bars, plates, and tubes. |
|
Locked
File - UploadingFilesLinksPhotos.txt
If you have a link relevant to the group, please post it in the Links section. If you just put it in a message, it will get lost in the shuffle after a few days. The coverage of the list is pretty broad.
All members can upload Links, Files, and Photos. A few guidelines: Try to place them in the proper folder, if it exists. If not, you can either just put it in the root folder and eventually I'll move it into the proper place, or create a folder. When creating a folder or uploading a file or photo, please don't use spaces or punctuation. You can either use caps for the first letter of each word, or use underscore as a space. Like this: "4x8Loop" or "4x8_loop" or "Steves_4x8_Loop" Not like this: "Steve's 4 x 8 Loop." That goes for Folder names and File names. A special note about the Photos section: Please crop in to the important parts. For photos, JPG saves smaller and looks better, for line drawings GIF is smaller and looks better. Please do not use TIFF/TIF or BMP files, the file size is way too big and I may delete without notice. Feel free to ask if you need help figuring out how to crop and resample. Irfanview is a fairly easy to use program that loads just about any file, you can crop and resample from there: Or for more complex stuff, another free program is GIMP: Attachments are now allowed, but please use judiciously. Rather than going out with the messages, they will be stored on the list but you'll get a link with the message. A last note: if you see something in any folder or in the messages that looks like spam or simply inappropriate, don't post on the list- email me directly and tell me about it and I'll take care of it with a minimum of fuss. loopantennas-owner@... Thanks, Steve Greenfield |
|
Locked
Re: Box Loop Antenna Rewind?
?Hi. I have the same loop arrangment?too and I'm planning to buy Litz wire but I don't know which is best. Hope someone here will answer. We are two who want to know this info. Thanks. Danny ? |
|
Locked
Re: Yahoo at its best
Thanks Andy, I think I have succeeded in posting in both locations.
I would rather have had the previous format that was used before Yahoo "fixed" it tnx 73 Graeme |
|
Locked
Re: Yahoo at its best
Graeme wrote: ? ?"Can any member advise me on how I can up-load a pdf file into the files section?
? ? I can't seem to find a "post" button anywhere."
There should be a purple "Upload" button near the upper right corner. First you need to go into the Files area, then navigate to the directory where you want the upload to appear. ?Then press Upload.
If you don't see it, then you are probably using a web browser that Yahoo does not support. ?Ugh.
Attaching a file to an email message doesn't exactly put it into the Files area. ?It is a different function. ?It's OK for what it does, but it works differently, and the file does not come up when someone goes into the Files area a year from now, looking for that file. ?That's one reason why I prefer using the Files area, rather than attached files.
Andy |
to navigate to use esc to dismiss