80m Loop Antenna

This means the terminal impedance is high and so the voltage across the capacitor is very high. Magnetic- loop antennas have existed almost since radio began. February 7, 2009 April 6, 2016 - by Joost - 5 Comments. It's an 1/8 wave vertical on 160 meters also. Magnetic ferrite rod antennas are common in portable bc radios. Just tune for maximum noise in the middle of the band, tweak for best SWR. Magnetic loops Good read! Magloop from Slinky coil; Another good read on magloops; DIY high power magloops; Good work, with construction details (**Note: mine like his 80m, from copper straps). Getting a Big DX Signal on 160-10 m from One Small, Low Antenna Chuck Counselman, W1HIS I live on a small lot in a dense, inner suburb of Boston and Cambridge. 89 - Indoor Loop Antenna for 80m. LTE B71 (FD 600) Band 71 is an LTE operating frequency Band. EB3FFP Marc - Spain - Midi loop. K9AY 160M / 80M Receiving Loop Antenna System After operating a couple 160 Meter contests last Winter, I realized I needed to do something to improve my receiving performance. I built the FEK antenna to the original specs but added a few feet to the radials to bring the resonant freq to the low end of the bands as I work more CW than SSB. It occupies a small space yet it works like a gem. Antennas include an AM-FM broadcast radio antenna, 1. Buy 80m Antenna and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items. Works either in Standard and Metric units, and let you choose on material, and loopRead More. Large Loop Antennas The delta-loop antenna is a superb example of a high­ performance compromise antenna. GB Delta Loop ore Quad Loop. 54 - All-Bands Dipole Antenna. 6 kV for 40m at 50 W) October 2003: Planned Hinge-Capacitor, Remote Control via Motor-driven Excenter (Plates 25x25cm, Spacing at 80m = 625 cm 2 /128pF = 4. by Ham Homestead. Portable DS1 Vertical Antenna 40m-10m Portable UnUnTenna 40m-10m Portable UnUnTenna Plus 40m-10m Portable Tri-Band Vertical Antenna 40/30/20m Portable No …. 30 is a transitional band where vertical and horizontal antennas both do well for DXing. Delta loop antennas are some of the best performing wire antennas and have the advantage that they can be easily supported via a single elevated mounting point such as a mast or a tall tree. This calculator will help you to calculate the different wavelength of antennas based on the frequency. Quick Link to Calculators. • Matching to 50 Ohm Feeder using 75 Ohm Quarter Wave Stub, The formula for this is: 1005 * (velocity factor of coax) / 4 * (target frequency). 40m End Fed Half Wave (EFHW) Antenna. The 40 Meter Isotron Antenna. From the archive: Three antennas, left to right: 70cms, 2m and 6m, all at 10m AGL. 3:1) on 80m and 40m, and be Yaesu FT-991A firmware update warning I have owned a Yaesu FT-991A for about two years. Condition is New. 80 meter loop frequency plot The table above makes it fairly easy to choose the feedpoint impedance for the 80 meter loop antenna. It will give you just as good as performance with less maintenance problems. We see that the shape of the loop determines the impedance and the gain (with respect to a reference dipole). The Deluxe PreciseLOOP® HG-1 is a high gain Magnetic Loop Antenna (MLA) for receive and transmit use. The 80 meter inverted vee is a common and classic antenna. Now we cut the 211 feet of wire in half and attach one wire of the 32 foot 450 ohm ladder-line to each ½ of the 211 foot (105. Loop Antenna for 10m. 31 /F(MHz) metres. • Our regular antennas work by "recieving" the electric field portion of the radio wave. My SWR testing on the second harmonics showed RF and SWR needles swinging up and down together which usually isn't a good indication of an efficient antenna. This version of the Alpha Loop has been designed to enable micro-tuning between the top outer and inner loops. Feb 24, 2018 - 61 - Tri-band Delta Loop Antenna for 80m - 40m - 30m Stay safe and healthy. 92 - V-Beam Antenna for 15m. She will show you the store and introduce some of the staff in this short video. While 1/8th wave works reasonably well, better coverage is obtained if the antenna is mounted at about 1/20th wavelength above ground. GB Delta Loop ore Quad Loop. 6 ready to use colors schemes - 3 light and 3 dark 2 custom schemes with unlimited colors. The next generation in Design and manufacturing. Getting a Big DX Signal on 160-10 m from One Small, Low Antenna Chuck Counselman, W1HIS I live on a small lot in a dense, inner suburb of Boston and Cambridge. 80 meter loop frequency plot The table above makes it fairly easy to choose the feedpoint impedance for the 80 meter loop antenna. Full Wave Loop Antenna 10M thru 80M G5RV Multi-Band Antenna by Louis Varney Hex Beam 20 thru 10M -- From K4KIO. If you want to try building your own, there are numerous websites. NVIS Antennas: Page 1. Discover (and save!) your own Pins on Pinterest. End Fed EFHW-8010P 80M-10M wire antenna EuroXpress Corporation: 8. The only communciations that you will receive from me will be pertaining to my Magnetic Loop Antennas. The Horizontal Loop antenna works well. A loop antenna is actually sensitive to the magnetic field and not the electric field (it is also called a magnetic loop). My first thought was to make an inverted L for 80m, but the far end would extend off my property and would increase visibility of the antenna, particularly in the winter when there are fewer leaves for cover. see whats great for your garden en start to build your own!!!!! 01 - Tee Antenna. This is the K5RP loop as discussed in ARRL Antenna Compendium no. An Indoor VHF Delta Loop. Because the loop is physically small compared to a full sized 160 meter antenna great care must be taken to decouple the. 3861 Mount Olive Church Rd. Build a simple magnetic loop antenna. Note that the bobtail is primarily a low bands antenna useful on 30 meters and below. Antenna Loop, Verona, Italia, VHF. A major feature of my Magloop antennas is the ability to work the whole band without retuning. Marris, G2BZQ See Feedback, May 1996 QST for corrections to this article. Super Antenna MP1LXMAX Deluxe Tripod 80m-10m HF +2m VHF Portable Antenna with Go Bags ham Radio Amateur MLA-30 Loop Antenna Active Receiving Antenna 100kHz - 30MHz for Short Wave Radio Rainproof Receiving Antenna. In contrast to the MLA M here is a stepper motor in the housing for tuning. Is an antenna that has 400 kHz bandwidth on 20m more or less selective than an antenna with 200 kHz bandwidth on 40m, what about 100 kHz on 80m? Back to the small transmitting loop antenna or mag-loop. HORIZONTAL LOOP ANTENNA CONSTRUCTION. You can work the whole band with a 1. 5:1 across the entire 80m band except for the very top where the SWR remains < 2:1. The overall length of that antenna is 44 feet. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. 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. Power:500w max. The loop antenna should perform admirably if hung reasonably well (as much in a square as possible) and high enough off the ground. 90 - Double-Delta Antenna 80m and 40m. Loop Antenna for 10m. IZ5 L J Bwww. 1: Calculator results for a loop with a diameter of 1 m (3. Magnetic loops Good read! Magloop from Slinky coil; Another good read on magloops; DIY high power magloops; Good work, with construction details (**Note: mine like his 80m, from copper straps). 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. I would have expected more like 14. Magnetic loop antenna might be a solution for 80m – KB6NU s Ham. HORIZONTAL LOOP ANTENNA CONSTRUCTION. I compared the loop antenna with my active HF vertical whip antenna R&S HE010, which is located on top of my house and the signal levels and SNRs were roughly equivalent. This post relates to the design and build of a 160/80/40 Meter magnetic loop antenna. 00 *) 160M Antenna, $150. 1uF capacitors from the supply line to the collector resistors of the two transistors and 100K resistors to dissipate any static on the loop. 5 MHz (or 1. Although I don't plan on using more than 100 Watts in my station, the 200 Watt. Now tune the MFJ-259 to the center of a 30 khz operating frequency you determine. com is an archive of Rod/AC6V's webpages, and is no longer being updated. It seems clear from this very basic, but perfectly reasonable, EZNEC simulation a full wave 160 meter loop running in the 80 meter band is a good antenna for DX work, but leaves much to be desired for NVIS even if you lower it towards the ground like you do with a dipole. 00 Folded Terminated Dipole (FTD) $318. Author: Menris Malamuro Dec 29, 2018 · MFJ-1836 Cobweb Antenna MFJ-1836 and MFJ-1836H. My antenna is combined from the antenna for 80M band 0. Custom HTML box. 88 - Indoor Loop Antenna for 80m to 30m. Wire Antennas (13) Legendary Antennas (8). The 20 metre delta loop is easy to construct and unobtrusive for neighbours. you will be on the air on 80m with 100w and a decent signal. The TACTICAL antenna is a dipole folded over a non-inductive load resistor. MFJ-1786 Loop Antenna – My Stealth Antenna Installations. The GIRA is com-. A circular loop is ideal, but squares, triangles, and other shapes can work well; just make the area enclosed by the loop as big as you can. 5MHz 80 Metre Mobile Antenna Watson Multi Ranger 9 HF 80m-70cm Mobile Ham Radio Antenna Aerial No more than 1/2 to 1" depth is just fine. I really don’t have room for a full, half-wavelength dipole, so I’m looking for options. On top there is a handmade varco to withstand the high voltages. This post relates to the design and build of a 160/80/40 Meter magnetic loop antenna. Since its introduction in mid 2015, the HF-319 has become a popular antenna and is used in a variety of situations. Loop antennas have always fascinated me. 80 Meter CW Center Frequency: 3. Lazy Quad Antenna for 10m. Easy Ham Radio Sky Loop Antennas - The Mega Loop by DX Commander. a traditional 1/4λ height; let's say 30 to 60-feet over tera firma. com/site/g3xbmqrp3/antennas/magloop. Can somebody please check the nec file attached, I am not sure I did it right. I estimate this was around 60m in circumference. 40m dips at 7. 10,15,20m: $629. 00 Shipping (Total $150. Full Size Quad Loop 2. The antenna This 10 - 160 meter tuned horizontal loop antenna is fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner. I measured SWR curves for both coupling loop types, with the bottom of the main loop at 75 cm (3. 60 - Lazy Quad Antenna. 25 wavelengths on 80 meters (2. 80m Antenna for small gardens by G7FEK 46ft multi-band antenna for small gardens by g7fek. If you want it to work properly, you will need a means of measuring SWR, some trial and error, a little patience and at least half-a-brain to build this. As well, there is some directivity. With ENDFIRE I got max 12-15 dB of F/B. Terminated Folded Dipole Antenna System: 10 Meters through 160 Meters commercial-grade performance, heavy duty construction, and top-notch customer service. 96 - Loop Antenna for TX for 160m. 95 - Phased Loop Antenna. 61 – Tri-band Delta Loop Antenna for 80m – 40m – 30m. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. 1005 /F(MHz) feet or 306. The BABY loop at TOKYO Hamufea 2015 the first day, had been parked near the smoking area at the back hall, Hammer with a loop antenna. a multiband wire dx antenna. You are most welcome to visit our shop. Strays WWII MERCHANT MARINE REUNION D The 1992 reunion of the Gallups Island Radio Association (GIRA) will be held at the Ramada Renaissance Hotel in Long Beach, California, August 28-30. We will not have any other components available. Firing supports over trees. OH7SV motivated me to replicate and continue his magnetic loop antenna tests. They can also be in the vertical plane and are most often in the same shapes with the delta being very popular as it has both vertical and horizontal polarization. These antennas are well known and work well, but for some reason I've never used one apart from on 136 and 500kHz where I used an 80m square magnetic loop made from standard PVC covered wire. Frequency List for SHTF Survivalist Radio Communications and Preppers Information about common frequencies and channels for tactical, emergency, and survival for HAM, CB, MURS, GM. The Small Transmitting Loop Antenna-AKA-Magnetic Loop. We have been building these horizontal loop antennas for about 12 years now, we took a break, but I have had many requests for it since then. The GIRA is com-. 80m Magnetic Loop Antenna – Tripod Acknowledgement: I m thankful to Gerry for building this project, sharing the pictures of this antenna (Shown above) and his valuable feedback in his to. Tokyo Hamufea 2015 - the BABY Loop. This type of antenna radiates most of its signal at very high angles, which is perfect for using Near Vertical Incidence Skywave (NVIS) propagation to contact stations up to about 500 miles away on the 80 meter band. 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. loop antenna. Wire Antennas (13) Legendary Antennas (8). Easy Ham Radio Sky Loop Antennas - The Mega Loop by DX Commander. NOTE: This is not a plug-n-play antenna. These antennas are well known and work well, but for some reason I'd never used one apart from on 136 and 500kHz where I used an 80m square magnetic loop made from standard PVC covered wire. It is an Amplified loop designed for maximum performance and ease of use as a tabletop antenna. 20m is the odd ball and dips at like 13. I built the FEK antenna to the original specs but added a few feet to the radials to bring the resonant freq to the low end of the bands as I work more CW than SSB. MagLoop, Founder & Owner. Your PayPal receipt is your confirmation that we have received your order. A grounded vertical radiator may be shunt-fed as shown in Fig. We at Radio Wavz have one goal, to serve the customer to the best of our ability. com), fiberglass poles by Max-Gain Systems (tnx to Allen Bond of MGS). This borrowed capacitance, and the shunt matching coil's inductance, form a highpass, LC network which transforms the antenna's low impedance (typically 25 ohms or so) to that of. The whole antenna with top hat, according to my noise bridge resonates at 6. mounting the loop. Multiband operation is achieved by use of 300 ohm balanced line fed to an antenna tuner. be to feed the loop with open wire through a good balanced tuner and feed it on both bands. Info Board Radios Radio Shop Qrp Ham Radio Antenna Homemade 3d Printer Magnets 3d Printing A Hanging Rectangular Loop Antenna. The most common material for home building small ham radio loop antennas is common copper plumbing pipe. 5 3 0 2 4 6 8 10. Antennas include an AM-FM broadcast radio antenna, 1. I found 20 meters to be very decent. 160m Inverted Delta Loop. The stand alone 80m loop is approximately four feet in diameter. 700 amateur radio topics - 6,000 links & 133 pages - from antennas to zones NOTE: AC6V. 00 * ) ( * free shipping for horse fence antenna within continental u. This antenna is a high performance, full size, full wave, 80m loop antenna. 64mm) December. 0 is made with premium materials that are precisely manufactured and assembled in the. This post relates to the design and build of a 160/80/40 Meter magnetic loop antenna. The 20 metre delta loop is easy to construct and unobtrusive for neighbours. Super Antenna MP1LXMAX Deluxe Tripod 80m-10m HF +2m VHF Portable Antenna with Go Bags ham Radio Amateur MLA-30 Loop Antenna Active Receiving Antenna 100kHz - 30MHz for Short Wave Radio Rainproof Receiving Antenna. If you want it to work properly, you will need a means of measuring SWR, some trial and error, a little patience and at least half-a-brain to build this. The main loop is 47 turns of wire (two loops are shown in red) around a frame made of 1-inch i. 2 METER LOOP antenna SSB CW 144 Mhz Ham Radio Best 2m loop out there! - $48. The W6LVP magnetic loop antenna experimenter’s kit includes a power inserter bias-T which enables the coaxial cable running to the antenna to carry radio signals from the antenna and 12 volts DC to power the loop preamp. Shielded-Loop Receiving Antenna, N5FC: Build a simple magnetic loop antenna, ON3JT: Tableantenna invisible loop antenna, PY1AHD: The ATL-3 Loop Antenna: The magnetic loop, G3BGR: Traveling Loop magnetic: Variation on the Shielded-Loop AM Antenna: VHF Antenna in a Lunchbox The Magnetic Loop on Two: The K9AY loop antenna for 160 and 80m bands, ON7EQ. HF Antennas 101 l A good antenna may be the most important component of a good HF station – 1W QRP station + good antenna can be heard worldwide – 1KW station + bad antenna can warm the shack in winter l Major antenna types – Vertical ¼wave monopole – Horizontal ½wave dipole – Beam/Gain (Yagis, quads, etc. The coax feed is a small loop that comprises the split ends of the coax and about 1/3 of a turn of the copper tubing in the center of the coil. 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!. Unlike any other similar antennas on the market, the CHA F-LOOP 2. 91 - Inductance-Loaded Shortened Dipole for 160m. 93 - Picnic Vertical Wire Antenna. The antenna length should be about a half wavelength at the lowest frequency of interest for best results. So the hunt started for the balcony antenna, it had to be stealth (as condo rules do not favour antennas), multi band with adjustments from indoors and able to handle cold winters without troubles. •Need lots of room, keep them away from metal objects like heaters and ducts •Wire antennas can be run near the peak of the roof inside the attic, bent in odd shapes to match the space available. Even a loaded 80m antenna would take up a lot of room. This guide should offer an example of how a delta loop could be set up, I hope this information is useful. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band Receiving antenna for low bands K9AY loop antenna installed at PA6Z Contest group. Another solution I'm considering is one of those 43-ft. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. com from leadings brands, including Alpha Delta, Buckmaster, Bushcom, Chameleon, Diamond, EAntenna, MFJ, and SOTABeams. The GIRA is com-. a traditional 1/4λ height; let's say 30 to 60-feet over tera firma. Feb 24, 2018 - 61 - Tri-band Delta Loop Antenna for 80m - 40m - 30m Stay safe and healthy. M0CVO Antennas, amateur radio antennas for fixed station or portable operations, HF/6m all are catered for. 2m dia loop gamma matched optimized for 40m but tunes. I estimate this was around 60m in circumference. So the hunt started for the balcony antenna, it had to be stealth (as condo rules do not favour antennas), multi band with adjustments from indoors and able to handle cold winters without troubles. DX Engineering also has Ladder Line Fed Multi-Band Dipole Antenna Kits for 160M and up, 80M and up, and 40M and up. MULTIBAND LOOP ANTENNA 80m - 10m NG9D. fact the loop antenna is a high-Q resonant circuit, many kilovolts of RF voltage can be. Also, the design optimizes the system’s SWR in the important CW DX, SSB DX, and Digital windows on the 80m band. The distance between one point to another adjacent point in a wave is known as the wavelength. Comes with an antenna tuner for all bands between 80-10m. The loop is interesting in that if you want to accent lower bands in lieu of higher you can make the loop bigger simply by increasing the length of the LMR-400 and adding a couple BNC's. This brings even more efficiency, and the antenna is less visible. Small, active wideband receiving loop antenna 15 kHz - 30 MHz. 60 - Lazy Quad Antenna. I used a RigExpert to trim the antenna. 00Mhz and also at 1. In the article below, I’d like to describe the theory and the mechanical build process for a 160m-long multiband loop antenna, including its support system, tuning, and SWR analysis. com/site/g3xbmqrp3/antennas/magloop. Homebrew 40m cobweb antenna 8 pounds), blend in with your surroundings while standing tough against nasty weather. Amatuer Ham Radio Antennas. Introduction. Delta Loop Antenna 80 Meters. There are a few options of which one of the best is a Magnetic Loop antenna. 88mm, Spacing at 40m = 625cm 2 /14pF = 44. Re-engineered Active Loop Antenna ALA1530S+ Impe. I measured SWR curves for both coupling loop types, with the bottom of the main loop at 75 cm (3. The stub in the top leg of the antenna opens the loop when operating on 40 meters and selected other bands. Fast & Free shipping on many items! NEW Design! 100 Watt 10-40M +20W 60/80M Magnetic Alpha Loop Antenna. My favourite magnetic loop for HF pedestrian mobile. The loop in the middle in Picture E is the 20 inch loop I use most of the time because it is the most versatile. Once the wires are cut and the Balun build, it takes less than 20 minutes to deploy the antenna. 5 kW 9:1 unun with Kevlar wires. For how to build information, construction details and material sources for this project, see my article: Building Dipole or Wire Antennas. It is good to do this if it is convenient to your particular set up. The SWR will be well over acceptable levels without a tuner but will be tunable on both bands without too much effort. Quick Link to Calculators. 40-20-10m FD3 OCFD antenna – G8ODE iss 1. by Ham Homestead. Box 25240 Tempe, AZ 85285-5240 Senior Member IEEE Email: [email protected] The bottom is flatter indicating more gain at lower angles, and less at higher angles. high Z) Forget miracle antennas – they cannot work at all well – they just don't have the aerial aperture for it! Loading coils and capacitance devices have losses ( capacitance least) but so do ATUs/Couplers. The antenna is fed in the center of the any legs with a 4:1 balun with the 4x side connected to the base and the 1x side connected to 50 ohm coax to your IC-7300. The products come with lower SWR and are durable with multiple band Amateur Radio HF Antennas: Book One An Introduction. What is full size on 80m – ¼ wave 66ft, ½ wave 133ft – other bands ½ wave multiples not matched by ATU/Coupler ( v. 94 - Laid-Back Quad Antenna for 80m. Like all loop antennas, it is highly directional, which allows you to null out unwanted noise sources. 9 MHz Full-Wave Loop Antenna. NEW Design! 100 Watt 10-40M +20W 60/80M Magnetic Alpha Loop Antenna See more like this. It is a great complement to vertical or wire transmit antennas. Full-wave loop antennas can be large at lower frequencies, but they are quieter than dipoles and have more gain broadside to the plane of the loop. Antenna Loop, Verona, Italia, VHF. In the article below, I’d like to describe the theory and the mechanical build process for a 160m-long multiband loop antenna, including its support system, tuning, and SWR analysis. 2m dia 40-80m loop. 1: Calculator results for a loop with a diameter of 1 m (3. Chameleon Antenna Portable Magnetic HF (10 - 80M) Loop Antenna, 10W CW, 25W SSB The CHA F-LOOP 2. Shared Apex Loop Array, includes 15 V DC LINEAR Power supply 16 ft alu Shared Apex Loop Receive Antenna System. Active Loop ALA1530S+ Imperium. It is relatively simple to make, does not depend on a good ground and operates well at low heights over short, medium and long these being the 80m, 40m and 20m. Compact magnetic antenna (Magnetiс Loop) 20-40-80m band's It is a compact three-band magnetic antennaIt operates in three amateur short wavelength ranges of 20-40-80m (3. Manufacturers of High Quality Amateur Radio / Ham Radio HF Yagi, Transmitting and Receiving Antennas. and winter coming, I decided to replace the loops with an 80 meter inverted vee. points of note. 31 /F(MHz) metres. Magnetic loop HF antenna In the past I experimented with an HF magnetic loop antenna for the first time. 160m/80m Broadband Antenna by K5GP file: 80m_broadband_dipole. (Started in dec 2008) Many hams are using a "magnetic loop" antenna. The transmatch gives a good match to 160M, 80M,40M (sorta!) and 20M. Direction Finding Antennas 14-3 Fig 3—Small loop consisting of several turns of wire. Full Size Quad Loop 2. Lobes 40 - 160m have more NVIS On 80m the W4KDA loop has complete coverage of the country with no skip zone. An excellent DX performer and is an ideal replacement for your half size G5RV. Same loop at final place in attic. Here are some simple suggestions that may help your project. Detail of coupling loop and experimental capacitor (theoretically 128 pF/3. If you want an antenna that really works, and takes up next to no space, then you can't do better than a magnetic loop. Antenna projects for 80 meters band category is a curation of 169 web resources on , Vertical antenna for 40 and 80m, K5LAD 80 meter antenna, The Hudson antenna. The coax feed is a small loop that comprises the split ends of the coax and about 1/3 of a turn of the copper tubing in the center of the coil. Inductive matching works by borrowing a small amount of capacitive reactance from the antenna (by tuning the antenna slightly above the actual transmitting frequency). The only communciations that you will receive from me will be pertaining to my Magnetic Loop Antennas. 80 75 Meter Wire Antenna Sizes. This is a common site limitation for any HF antenna. Strays WWII MERCHANT MARINE REUNION D The 1992 reunion of the Gallups Island Radio Association (GIRA) will be held at the Ramada Renaissance Hotel in Long Beach, California, August 28-30. Komunica HF Explorer 3 | 80m - 6m + Air Antenna | LAMCO Barnsley £ 89. On 80m and 160m topband where the attainable - (size constrained) efficiency is diminished performance of a the small loop still generally antenna exceeds that achievable from a horizontal -wave halfdipole, particularly one deployed at suboptimal height - above ground. Recently Chinese manufacturers have begun producing a low cost wide band (100 kHz - 30 MHz) magnetic loop HF antenna known as the MLA-30. February 19, 2015 TVARC Antenna Guide for The Villages 14 Flagpole A minimum of 32 radials for an efficient RF is step one "Shorten" or "Loaded" Monopoles Antenna On Air Stealth Tuner Install Cost 6M 10M 12M 15M 17M 20M 30M 40M 80M 160M Flagpole B A Remote D F C B B B B A A C D D Invisible Dog Fence installers charge $200 -$300 Using an. below is a 2. Magnetic Loop Antennas for The Radio Operator with Limited Space pt. Ham Radio Outlet Plano, Texas Join Katie WY7YL on her tour of one of our Ham Radio Outlet flagship Superstores in beautiful Plano, Texas. Feb 24, 2018 - 61 - Tri-band Delta Loop Antenna for 80m - 40m - 30m Stay safe and healthy. 15 kHz - 30 MHz. The feedpoint uses a 6 inch section of ½ inch diameter PVC pipe. 40-20-10m FD3 OCFD antenna – G8ODE iss 1. In contrast to the MLA M here is a stepper motor in the housing for tuning. Easy Ham Radio Sky Loop Antennas - The Mega Loop by DX Commander. The total conductor length is very much less than a wavelength. This preamplifier is generally used with receiving antennas (Dipole, Loop, Long Wire, Beverage, etc) in the amateur radio bands (160m, 80m, 40m, etc). (Sides of the square are about 42cm) This design is for a small loop (side length 42cm) suitable for receiving on 80m and 160m bands. 40m-10m DELTA LOOP ANTENNA - GU3WHN The variety of one wave length loop shapes that can be deployed to suit the QTH. 93 - Picnic Vertical Wire Antenna. The above graphic depicts the overall layout of the loop antenna consisting of 558 ft. 89 - Indoor Loop Antenna for 80m. On 80m I have no problems hearing very distant stations, like Japan, but they cannot copy me. L3HARRIS RF-3134-AT003/5 OTM Vehicular Loop Antenna The RF-3134-AT003/5 is an On-The-Move (OTM) vehicular loop antenna designed for Near Vertical Incident Skyway (NVIS) HF. This article is a reprint from my original article published in 2004. 13 twinlead Quarter wave Vertical is: 65. The feedpoint uses a 6 inch section of ½ inch diameter PVC pipe. com), fiberglass poles by Max-Gain Systems (tnx to Allen Bond of MGS). Without Radials. Short Skip and NVIS on 80m While the 80m band is "open" most "short skip" 100W contacts made with a good dipole antenna at each end, achieve signals of around S9 +15dB. Radio Jay Allen review of the A-Loop-TAM; Kiwa Mediumwave Loop Experiences. With the G7FEK antenna you can expect the same "short skip" signals to be received above S9 under the same conditions. Antenna Loop, Verona, Italia, VHF. The antenna is extremely sensitive and can be built mostly from parts from old radios and tape recorders. Doublet - half-wave, center-fed with twin-line (open wire or 450-ohm) and tuner: efficient all band operation. For Reception. Multiband operation is achieved by use of 300 ohm balanced line fed to an antenna tuner. •Need lots of room, keep them away from metal objects like heaters and ducts •Wire antennas can be run near the peak of the roof inside the attic, bent in odd shapes to match the space available. Delta Loop Antenna 80 Meters. 00 Ex Tax: £120. 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. 34 feet less the ¼ wave-length of 64 feet gives us 211. Despite its reputation as a Multi band antenna, it is a single band antenna. A 20-m loop works for 20m and 10m, an 80m loop works on 80m and 40m, and a 40m loop works on 40m and 20m without any tuner. I've been a ham for over 50 years and most of my antennas have been various types of home brew wire antennas. As already mentioned it is fed at the 1/3 point. This matchbox is good for this type of antenna. 13 twinlead Quarter wave Vertical is: 65. The antenna is oriented in a North-South plane and fed in a bottom corner (slant polarized) with a quarterwave of 75 ohm coax to match it to the 50 ohm feedline, through a homebrew choke balun. Higher bands wont work, I expect that is due to the top. Antenna Loop, Verona, Italia, VHF. I have tried both antennas. The Deluxe PreciseLOOP® HG-1 is a high gain Magnetic Loop Antenna (MLA) for receive and transmit use. 40m side view 40m Top View Notice the bottom of the “40m side view” shape. Purchased item: SlinkTenna - 80m-6m Compact Quick Deploy Helical HF Ham Radio Antenna. 20m Loop Antenna by Harry Lythall - SM0VPO. So, I decided that for this winter, the vertical would become a dedicated 80m antenna. A standard Di-Pole (not off-centered!) is 75 ohm impedance. Buy 80m Antenna and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items. 5MHz) therefore also resonant on second, third, and fourth harmonics, etc. Strays WWII MERCHANT MARINE REUNION D The 1992 reunion of the Gallups Island Radio Association (GIRA) will be held at the Ramada Renaissance Hotel in Long Beach, California, August 28-30. Attic antennas •Many types of antenna can be mounted in the attic IF you don’t have Radiant Barrier (Tech Shield). Easy Ham Radio Sky Loop Antennas - The Mega Loop by DX Commander. The Isotron Antenna. Same principle can be used also for HF communication antennas (without ferrite rod). 2-1x1 meter and 70X70cm) Fractal shape make antenna much broader bandwidth up to 120 KHz on 10 meters band Easy tuning slow motion power dc motor with double gears electrically insulated Capacitor Butterfly type 7mm gap between plates make them up to 9KV insulation allowed use up to. 94 - Laid-Back Quad Antenna for 80m. K9AY 160M / 80M Receiving Loop Antenna System After operating a couple 160 Meter contests last Winter, I realized I needed to do something to improve my receiving performance. 80M Shops are located in Hong Kong Island, Kowloon and the New Territories - a one-stop shop specializing in the design and sale of model buses. The HF Delta Loop Antenna is a high performance, omni-directional, broadband antenna that is suited to base-to-base or base-to-mobile communication over short to medium distances. A Folded Dipole Antenna of length L. Included with each order is a copy of the September 2005 QST article, A Simple Direction Finding Receiver for 80 Meters by Dale Hunt, WB6BYU (Reprinted with permission. Online calculators and other hams say they have used around 280' of wire for 80m. 5See note 2. Small Loop Antennas 4 to 7 dB RDF 120º to 150º Beamwidth 8 foot diameter "magnetic" loop 4 dB RDF bi-directional 150 degree beamwidth installed close to the ground to suppress horizontally polarized RFI a specialized antenna for steering a very deep null onto a single ground wave propagated RFI source. How To Make an Amazing 80m Slinky Antenna for Under $50. 2012 UPDATED: 31-12-2015. We have been building these horizontal loop antennas for about 12 years now, we took a break, but I have had many requests for it since then. In several years or running a short, openwire fed vertical dipole (6m per leg), I have determined that this antenna (in its vertical form) was on par with my full size 80m horizontal dipole at 40 ft. Antenna covers range: 13 MHz to 30MHz. 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. 25 wavelengths on 80 meters (2. 10,15,20m: $629. The RadioWavz DX80 Proline (with High Efficiency balun) Windom is ideal for those of you who do not use a tower and beam. As well, there is some directivity. High Performance 40 Meters Vertical. Homebrew 40m cobweb antenna 8 pounds), blend in with your surroundings while standing tough against nasty weather. Small Receiving Loop for 80m/160m - Deep nulls give noise reduction - a simple small receiving loop. AMAZING Ham Radio 40m Contact UK. 15dBi 446MHz 5/8 wave x 2 5. It’s 10′ off the ground on a galvanized mast. At the heart of every radio and MLA (Magnetic Loop Antenna) is the resonant circuit. eu Currently my ‘provisional’ 80m antenna experiment consists of TWOPhased 'Inverted' DELTA LOOPS, VERTICAL polarisation. In the real world, installed at practical amateur heights (physically close to ground), the range of feedpoint impedance can be from 50-240 Ω depending on configuration, orientation, and choice of feedpoint. AG6IF Talented Balun for build HF Ham radio Sky Loop antenna, 160m 80m & 40-10. Here are some simple suggestions that may help your project. IZ5 L J Bwww. The 80 meter loop is really designed for 80M and 40M. Diagram of the loop antenna. Loop Antenna for 10m. Delta Loop Antenna. long wire loop gets even lower - remarkably so, as shown in Figure 6. Tests with 80m magnetic loop antenna. The HF Delta Antenna offers high performance over short to medium distances, and exhibits essentially an omnidirectional pattern. 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. A full wave loop, compressed in dimensions has much less than 1 dBd gain. Sensitivity of Multi Turn Receiving Loops by William E. The feed impedance of the end fed long wire antenna is perhaps the main consideration particularly as in this case the antenna is to be a multi-band antenna, being a useful radiator on all amateur radio bands from 80m through to 6m. In a few cases where the loop and TX antenna are quite close, the AYL-4 itself needs protection. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. This antenna allow to reduce noise on both bands. A flimsy and rather poorly made plastic cover protects the tuning capacitor and its motor and the coupling coil from the elements, if the antenna is mounted outside, but it seems designed more to let rain run out than to keep it out in the first place. By using a sloping wire, as shown in B of Fig. Large Loop Antennas The delta-loop antenna is a superb example of a high­ performance compromise antenna. Posted in Amateur radio , Uncategorized | Comments Off on 80-Meter Magnetic Loop Antenna Comments are closed. thanks in advance. Delta Loop Antenna 80 Meters. verticals, but they can be pricey, and need radials. fact the loop antenna is a high-Q resonant circuit, many kilovolts of RF voltage can be. Super Antenna MP1DXTR80 HF SuperWhip Tripod All Band 80m MP1 Antenna with Clamp Mount and Go Bag ham Radio Amateur. There's a lot of information on the internet about delta loop antenna design, many options and configurations are possible. Sensitivity of Multi Turn Receiving Loops by William E. At a 100,000-foot level though, a NVIS antenna is a dipole antenna that has a steeper transmit angle than a traditional horizontal flat-top dipole antenna and is located closer to the ground at between 8 to 15-feet Vs. 6 ready to use colors schemes - 3 light and 3 dark 2 custom schemes with unlimited colors. The Small Transmitting Loop Antenna-AKA-Magnetic Loop. Karl, DK5EC, describes the construction of a simple multiband delta loop antenna (skywire) for the 80m - 10 m bands. With ENDFIRE I got max 12-15 dB of F/B. On 160m I got to 1:4 SWR, intuitively it feels like changing…. BROADBAND 80 METER DIPOLE One of the biggest problems for HF op­er­a­tors is the lack of a good wide band an­ten­na for 80 Me­ters. What a hoot! Making contacts on a home made antenna is great fun. *This is perfect antenna for ALE HF-link stations, NVIS, MARS, ARES, EMCOMM etc. small foot print low profile QRO loops. Dualband Full-wave Loop Antenna for 80m-40m. Shared Apex Loop Array, includes 15 V DC LINEAR Power supply 16 ft alu Shared Apex Loop Receive Antenna System. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band Receiving antenna for low bands K9AY loop antenna installed at PA6Z Contest group. 5 ft) above ground level (AGL). It is good to do this if it is convenient to your particular set up. The 80 meter inverted vee is a common and classic antenna. 5 Enhances reception and increases the quality of your listening experience! Description: This is our HD Series HAM Loop Antenna for use on 80m through 20m bands. Thank you for purchasing and using the Chameleon AntennaTM High Frequency (HF) Portable Loop Antenna (CHA F-LOOP). Fig 2—Shielded loop for direction finding. 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. 8-30 Mc center-loaded HF whip, 51 Mc Whip, 28/27 Mc whip, GPS antenna under a radome on roof, 145 Mc 5/8 wave whip and VHF/UHF scanner whip. 95 1 in stock : mfj933 : mfj mfj933: basic loop antenna tuner 3. 71 - Tower Pole as a Vertical Antenna for 80m. They can also be in the vertical plane and are most often in the same shapes with the delta being very popular as it has both vertical and horizontal polarization. On 40 meters the SuperLoop 80™ is a 2 wavelength open loop or Bi-Square. 58 - Dualband Full-wave Loop Antenna for 80m-40m. L2 also is 12 feet and the overall length is 48 feet. 5 on 40m, 5 on 20m and 10 on 10m) and is installed between 30 to 40 feet in the air. While a long wire antenna gives a pattern that breaks up into lobes, folding the same. In several years or running a short, openwire fed vertical dipole (6m per leg), I have determined that this antenna (in its vertical form) was on par with my full size 80m horizontal dipole at 40 ft. For further details of the Megaloop and it's construction go to the following links The basic 80m loop. The 80-meter antenna is a 130-foot dipole, fed in the center with 70 feet vertical and 30 feet horizontal 10 feet off the ground and 80 feet off the ground. Healy, "Antenna Here is a Dipole," QST, Jun 1991, pp 23-26. We have bare pc boards available for $10 each. The construction of the antenna is shown above and is a five turn loop of one cable from 5 ampere mains cable. You do this by first connecting the antenna analyzer to the loop via the interface/tuning box. 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. Bas Lev 12,531 views. HD Series Ham Loop Antenna for 3. Experiment with full-wave loops. For those with no trees, little room, maybe a patch of grass, or a deck or a sliding glass door where you can erect an antenna and only temporarily, for the bands above 7 MHz, I'd suggest an antenna commonly called a "magnetic loop". My 80m frame antenna is really yhe same antenna, but with more than one loop. 5:1 SWR or better without retuning. What a hoot! Making contacts on a home made antenna is great fun. The Delta Loop antenna is one of the famous "magical antennas", but in reality, the Delta Loop antenna is not as magical as it's reputation. 80m Antenna for small gardens by G7FEK 46ft multi-band antenna for small gardens by g7fek. Receiving Loop Antenna Calculator. While a long wire antenna gives a pattern that breaks up into lobes, folding the same. The kit version, shown in Figure 8, uses a clever mounting system for the loop antenna but places the ends closer together. 53 - All-Bands Antenna. I use 2 antennas on 80m, Comet 422V and a 80/160m mag loop. (200 kHz - 30 MHz +/- 3 dB, good reception of VLF). This guide should offer an example of how a delta loop could be set up, I hope this information is useful. On 40 meters the SuperLoop 80™ is a 2 wavelength open loop or Bi-Square. 9Mhz due to the series top hat inductor and self capacitance of the top hat. HFedz Antennas. verticals, but they can be pricey, and need radials. 89 - Indoor Loop Antenna for 80m. Random Wire Antenna Lengths. Works either in Standard and Metric units, and let you choose on material, and loopRead More. This is my second Mag Loop. 95 out of stock : mfj935b. 1 out of Tecsun AN-200 AM/MW Rotatable Tuneable Loop Gain Radio Antenna(No Battery Needed) 4. However, the intermediate frequencies can be worked on without any problems using a tuner, as the VSWR is below 3:1. Is an antenna that has 400 kHz bandwidth on 20m more or less selective than an antenna with 200 kHz bandwidth on 40m, what about 100 kHz on 80m? Back to the small transmitting loop antenna or mag-loop. Use 75 or 50 ohm cable to feed the centre of the dipole. The Deluxe PreciseLOOP® HG-1 is a high gain Magnetic Loop Antenna (MLA) for receive and transmit use. Umbrella antenna for 80m and up- So, the loop diameter should not exceed about 1 mtr (≈3. Is an antenna that has 400 kHz bandwidth on 20m more or less selective than an antenna with 200 kHz bandwidth on 40m, what about 100 kHz on 80m? Back to the small transmitting loop antenna or mag-loop. Shipped with USPS Priority Mail. Ranga Rodrigo (University of Moratuwa) Impedance and Loop Antennas January 4, 2009 22 / 41. Stock availability and shipping volume can delay shipping. If you want an antenna that really works, and takes up next to no space, then you can't do better than a magnetic loop. The EFHW 80-10 consistently beat these other antennas in all directions and all distances. ZL-Special Beam Antenna for 15m. 2 meter loop antenna SSB CW 144 Mhz Ham Radio. Antennas include an AM-FM broadcast radio antenna, 1. Dual-band Loop Antenna for 30m - 40m. All you need is open mind, beautiful summer evening and few meters copper tubing. The OCF Dipole antenna is very simple. This is a 250W PEP SSB antenna system, where SWR results shown below are automatically achieved on 10-80 Meters. 23/08/2016 in 80m SOTA Antenna, Amateur Radio, HF Antenna, Link Dipole Design, SOTA, SOTA Antenna. Then I checked the loop performance on different ham radio bands. Assembling an effective indoor antenna for the HF bands can be frustrating. com from leadings brands, including Alpha Delta, Buckmaster, Bushcom, Chameleon, Diamond, EAntenna, MFJ, and SOTABeams. Magnetic loops at 3. Loop antenna calculators suggest that a loop of that size can be tune from 40 to 10 mtrs with a variable capacitor of 10-180 pF. In the real world, installed at practical amateur heights (physically close to ground), the range of feedpoint impedance can be from 50-240 Ω depending on configuration, orientation, and choice of feedpoint. 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. Comes with an antenna tuner for all bands between 80-10m. My Favorite 40m "DX" Antenna. 80m Loop on 18m Spiderbeam Fiberglass Spiderpole. Umbrella antenna for 80m and up- So, the loop diameter should not exceed about 1 mtr (≈3. 95: A-3S: Beam,Triband,3 ele. The 40 Meter Isotron Antenna. It is essentially a coax fed G5RV scaled for best performance on 25 meters. Another solution I'm considering is one of those 43-ft. 57 coax|120. The Vehicular Loop Antenna is fully compatible with Fixed-Frequency, MIL-STD-188-141B ALE, 2G and 3G ALE/data modes, when used with the RF-382A and RF-5382 HF couplers. Fast & Free shipping on many items! NEW Design! 100 Watt 10-40M +20W 60/80M Magnetic Alpha Loop Antenna. The result was well worth it as I found that the new loop antenna receives and transmits very well on 80M (resonant band), it also tunes up very easily on 160M & 40M, giving impressive results with very low noise levels. 5MHz) loop (or frame) antenna has been really popular, and that there are loads of other radio amateurs who have taken my design and "ran with it" to produce variations that all have some great improvement. 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. The 80 meter loop is really designed for 80M and 40M. The average Antenna height is 13-14 m. It is a great complement to vertical or wire transmit antennas. Maximum response is in the plane of the loop. Hy Power Antenna Company, Our mission is to get as many hams active on HF with quality products at reasonable prices, n3hog, HAM, Amateur, SWL, Short Wave Antenna, Radio, dipole, dipoles, half square, delta loop, qrp, wire antennas, antennas, balun, guanella balun, 4 to 1 balun, 4:1 balun, 1 to 1 balun, 1:1 balun, multiband antennas, balun. A Folded Dipole Antenna of length L. 40m EH Receiver Antenna – G8ODE iss 1. Wire-Beam Antenna for 80m. The bottom is flatter indicating more gain at lower angles, and less at higher angles. Tri-band Delta Loop Antenna for 80m - 40m - 30m. The main loop is 47 turns of wire (two loops are shown in red) around a frame made of 1-inch i. Long: 1 wave length 80m. See the tables and plot below. The direction of fire is broadside to the antenna. 10,15,20m: $629. 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. Hy Power Antenna Company, Our mission is to get as many hams active on HF with quality products at reasonable prices, n3hog, HAM, Amateur, SWL, Short Wave Antenna, Radio, dipole, dipoles, half square, delta loop, qrp, wire antennas, antennas, balun, guanella balun, 4 to 1 balun, 4:1 balun, 1 to 1 balun, 1:1 balun, multiband antennas, balun. Router Screenshots for the Sagemcom Fast 5260 - Charter. That is hardly high performance, and the stub destroys harmonic resonances that are normally useful in loops. 10uf +12V: 80M 12V: 160M RF In 60-10M 160/80M 160M Figure 2: 160/80 Meter Impedance Matching Network with bias-T 1:4 unun 80M RY1 RY2. The following analysis is for a horizontal, equilateral triangle loop with all three corners at 60 feet. SWR figures are typically under 2:1 and 80m of course is a problem. A circular antenna is the best and has in a certain. It was only put up as an experimental antenna and will be replaced with a much heavier and stronger one when the warmer weather gets here. Background. Special thanks to W7IUV for making these plans available to the Amateur Radio Community. 6: GET ON AMAZON: 7: MFJ-1982LP EndFed 1/2 Wave 30W 80M-10M Wire Antenna MFJ: 8. The GIRA is com-. Add to cart GB 2 Band Fan Dipole 12-17m. Description The 80m dipole option is a wire dipole that runs above and parallel to the boom, connects to the reflector element center on one side of the dipole and to the director 2 on the other; The dipole is only -. 00 *) 160M Antenna, $150. Gain & Wave: HF – 50MHz 1/4 wave 0dBi 146MHz 1/2 wave 2. Arduino Radios Radio Shop Hf Radio Ham Radio Operator Qrp Ham Radio Antenna Electronics Projects Home Brewing. With the G7FEK antenna you can expect the same "short skip" signals to be received above S9 under the same conditions. On 80m I have no problems hearing very distant stations, like Japan, but they cannot copy me. Magnetic- loop antennas have existed almost since radio began. 40 meter Delta Loop Joe on 21st Oct 2016 I recently purchase a 40 meter Delta Loop from Chris and received the antenna few days later after the purchase, I hung up the antenna in less than one hour in configuration, C , I hook up my antenna analyzer after the installation and I was Very surprise is flat 1:1 on the entire 40 meter band, 20 meter was about 1:2 on the top edge of the band and the. Note that the bobtail is primarily a low bands antenna useful on 30 meters and below. Router Screenshots for the Sagemcom Fast 5260 - Charter. Fast & Free shipping on many items!. 40m-10m DELTA LOOP ANTENNA – GU3WHN iss 1. A significant factor at 80m is that ambient noise is quite high. I've been a ham for over 50 years and most of my antennas have been various types of home brew wire antennas. It was apparent that many stations were copying me much better than I could hear them, so something needed to be done. 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. COM JANUARY 2012 ♦ RADCOM of S9 on 80m (3. The antenna consist from two loops 1 meter in diameter. 40m-10m DELTA LOOP ANTENNA – GU3WHN iss 1. The loaded antenna has pretty narrow bandwidth - about 40 KC 2:1 SWR range, which I view as a good thing - an indication that there isn't a lot of loss. When in doubt, run tests with gradually increasing power -- with preamp switched in and out. loop antenna; 5. 80m, 40m Curtain Zepp Antenna. EB3FFP Marc - Spain - Midi loop. Ideas for compact 80m / 160m antennas by DX Commander. 80 meter loop is 1005/3. Background. The goals of the project were to provide an optimized antenna for 40m, 80m, 20m, and all other HF ham bands, in that order of priority. 40 meters on a 80 meter di-pole!), so you may want to double check that before using a balun. Small, active wideband receiving loop antenna 15 kHz - 30 MHz. Homebrew 40m cobweb antenna 8 pounds), blend in with your surroundings while standing tough against nasty weather. Compare this to our competition. Loop Skywire Mysteries Explained? 80m side view 80m Top View The shape resembles a donut; take note of the shape of the bottom. Loop Antennas Beam Antennas Vertical Antennas Misc Antennas; 160m Projects Receivers Pre-Amplifiers 80m Projects - Dipole Antennas. Shielded-Loop Receiving Antenna, N5FC: Build a simple magnetic loop antenna, ON3JT: Tableantenna invisible loop antenna, PY1AHD: The ATL-3 Loop Antenna: The magnetic loop, G3BGR: Traveling Loop magnetic: Variation on the Shielded-Loop AM Antenna: VHF Antenna in a Lunchbox The Magnetic Loop on Two: The K9AY loop antenna for 160 and 80m bands, ON7EQ. ,A3WS: $239. Here is a photo of W2BRI with his 12 foot square magnetic loop antenna. After some calculations with "loopcalculator. NEW Design! 100 Watt 10-40M +20W 60/80M Magnetic Alpha Loop Antenna See more like this. MLA-30 Loop Antenna Active Receiving Antenna 100kHz - 30MHz for Short Wave Radio. The OCF Dipole antenna is very simple. So even if you double or half the size of the wire, the. I don't have enough space for an 80m dipole in my backyard, but I could set up a decent-sized loop in my backyard. I have mine 4' high and on a rotor and can get better than 40dB null broadside to the plane of the loop. They can also be in the vertical plane and are most often in the same shapes with the delta being very popular as it has both vertical and horizontal polarization. Loop antenna calculators suggest that a loop of that size can be tune from 40 to 10 mtrs with a variable capacitor of 10-180 pF. 89 - Indoor Loop Antenna for 80m. So if your interested in 630M or 2200M this would be a useful antenna. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. Now to the other bands. Frequency List for SHTF Survivalist Radio Communications and Preppers Information about common frequencies and channels for tactical, emergency, and survival for HAM, CB, MURS, GM. Ideas for compact 80m / 160m antennas by DX Commander.