End fed 160 meter antenna


end fed 160 meter antenna 9:1. Whew, lucky I did not burn something up, I know why it stunk but there are still some out there that figure if their good old trusty tuner loads up and somehow a length antenna seems too work on 160 they are good to go, NOT! The end fed wire with 9:1 unun will work very well in a variety of configurations but it is probably best as horizontal, even if it is not in a straight line (that is, crooked, bent). Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to operate. 5m) end-fed is insulated for safety. Oct 31, 2020 · HF End Fed Antenna 1500W 160-10m /Ham Antenna with 9:1 dual core UNUN / 117 feet. 18 wire for numerous portable operations with great success. A loop fed in the southwest corner will have a few dB (3dB or more) gain favoring the northeast corner. 30 Watts QRP, 80-10 Meters. ANTENNA, CHAMELEON MPAS 2. A full-size Delta Loop, fed in the bottom corner, is a good low angle radiator and is great for working DX. 1. CHA MPAS 2. End-fed, […] Dipole Antenna Calculator. 66) end  End fed antenna building kit complete for 10-12-15-17-20-(30*)-40-80-160 meter band. 0 MHz band in three segments. 99 FREE Shipping Dec 28, 2016 · This is my attempt at explaining what I understood and a step by step instruction on how to build a monoband end fed half wave antenna coupler. MFJ-1984LP, $39. The size of the safety zone around an antenna depends on several factors, including the power fed to the antenna, but is  160 Meter Dipole & Sloper Antennas. For each model the inductance and capacitance values of three alternative impedance matching networks are computed to match to a 50-ohm line. For the 10- through 40-meter bands, you will have less than a 2:1 SWR across the entire band. 3 This antenna was constructed using two 10 foot sections of 4 inch PVC pipe joined, two lengths of 140 feet of #18 wire, and wound at 1 turn per inch over each 10 foot section and the wires connected at An 80 M half-wave off-center-fed dipole, with a feedpoint at about a 22. However, when I operated on the lowest ham band, 160 meters (1. Rappaport, “160 meter transmission line antenna,” Ham. This is the price paid for multiband coverage and physical short- ening. The 450 ohm balanced   16 May 2020 End Fed (or long wire) antennas are the most simple antennas an I wanted to work on all bands from 160m to 10m but ideally 80m, 40, 20m  A so-called random wire antenna is an end fed antenna. The black dots represent exact harmonics of the 3. Jan 09, 2013 · - End-Fed antennas have wild impedance swings. Radio Magazine, May W5JAW had modeled N3BB's tower for a 160 m shunt fed vertical End to end Z diff. (unun covers 160 to 10 meter) with black array. 1 SWR): 40 kHz $249. 40 meter amateur bands using a good tuner without modifications for the Ohio State Parks On The Air contest. I have replaced the 30' wire with 66. In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). on my 60 ft. 3:1) on 80m and 40m, and below 3:1 on 20, 15 and 10m. The classic dipole is still the most popular shortwave antenna - whether in amateur radio or for commercial users. 5Mhz until the end of the NVIS range at 12Mhz at which point we change to 1Mhz steps and corresponding VSWR readings for this antenna design as detailed and installed at my QTH. … Continue reading "Portable Antennas: The EARCHI End Fed" After much trimming, it tunes the full 160m and 80m bands by selecting tap points on the coil with an alligator clip connected to the end of the radiator wire. 8MHz) therefore   Off-Center-Fed Full-Wave Doublet Antenna 40m - 80m - 160m Short Dipole Antenna 160m Capacitance Loaded Vertical Antenna  3 Jul 2017 Antenna building instructions / article for Radio ZS This is about the easiest way to build a 160m antenna. Simply hang the far end from a tree limb–the coax is at the bottom. This portion becomes an inverted "L" ungrounded quarter wave vertical, 39 meters in length, made up of #14 stranded (7x22) copper-clad antenna wire. However, an end fed half wave antenna often has quite high impedance, creating a miss match with the usual transceiver An early version of this type of HWV antenna for 160 meters was the "rubber duckie" antenna developed by Joe Moraski, KY3F, in the early 1990s. The feed impedance becomes several thousand ohms. Apr 03, 2014 · In the search for the “Wonder Antenna” that is small, portable and easy to setup, I’ve decided to build an Endfed antenna using a 9:1 match. com in a single category. · Weight: 3. This formula takes into consideration the capacitive "end-effect" from insulators which shortens the physical length requirement for the equivalent electrical length. Building Instructions for the end fed antenna, note which toroidal you use. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer inserted in the wire at one-third from one end. Other bands will require a tuner. The entire antenna is 12 meters long mechanically, but forms an electic length of 20 meters for the 40 meter band because of the coil. This permits remote selection of 80 and 160-meter operation. It also formed the basis of the antenna I finally decided to use. 5' for 20m). 22 Different Wire Antennas. The EFHW transformer can be bypassed with this relay which turns the antenna into a 130' end fed. The antenna consists of a 53' wire and a specially designed matching device that the wire, as well as the coax connects to. I made some modifications to the construction but I kept the critical parts intact. The antenna can be seen as a dipole except that the feed point is placed at the end (or The 40 meter 2:1 SWR bandwidth effectively covers the entire band. Mini Soft Antenna Sf20 Dual Band Uhf/vhf Sma-f Female For Baofeng Kenwood Radio. Random Length Radiator Wire Antenna. 5K End Fed Long Wire Antenna. You will need four insulators. 10/20/40 meter band end fed antenna kit, including 100 Watt 1:49 impedance transformer, wire of your choice, DIY kit. 2ghz 1200mhz 23cm 11dbi Bnc Handheld Yagi Antenna 23cm Comet Cy-1205 Portable The versatile end-fed wire. On those extra long tails that you get with 40, 60, 80, and 160 meter Bazookas. 5 kW 9:1 unun with Kevlar wires. It is important to use a counterpoise. Your antenna is now built and ready to be strung up. These single-band and multi-band antennas can be mounted horizontally, vertically, or as a sloper. £ 39. 160-80-40 Meter 1/4-wave Twin Sloper DX-B. End Fed Halfwave. And I’m going to keep this VERY simple The Hy Power OCF40 40 meter version is the same as the OCF80, but is only 66 feet long, the feed is 23 feet from the feed point and it only overs 6, 10, 20 and 40 meters. Coil 5inch Diam. On a 9:1 end fed, the coax is an integral part of the antenna and radiates about as much as the wire. 65 / frequency in Mhz: Full wave loop (feet) = 1005 / frequency in Mhz: Full wave loop (meters) = 306. 7 hours ago · 160 Meter Shunt Fed Tower I am trying something different for 160 meters this winter. monoband end fed halfwave antenna, PD7MAA: A 9:1 Balun For Your End Fed Antenna "EFHW" - the end-fed half wave antenna. Title: Microsoft Word - W1HIS_article_2008Mar22. The end fed 1/2 wave antenna, much like the 43 foot vertical, has become a cult phenomena. 67 dBi 155 +j354 vs 8. Nagoya Ut-108 Vhf Uhf Dual Band Car Sma-f Quick Realease For Baofeng Kenwood. The remaining parts are the feedline and, if used, an antenna tuner. Maybe "end fed half-wave plus octaves" would be more precise! 5th = 17 meters (17. The resource is currently listed in dxzone. Rappaport, “160 meter transmission line antenna,” Ham Radio Magazine, May 1985, pp. The OCF160 covers the following ham bands. The antenna is sported by a 22ft (6. The 160-meter coil plus an 80-meter mobile antenna were placed at the far end opposite the feed point. He has  HF 160 to 6 meter band with SO239 Connector9:1 Unbalanced to End Fed 80 - 10 meters HF Multi Band Antenna 1. The other 6 feet will be used to support the antenna at the ground ends, (gray closest to ground), and for jumpers. As typically installed, it is a compromise antenna but great for portable use because it is easy to pack  here is a 100-foot, end-fed wire about with, along with greater man-made noise. 8 , 5. 2, 19. Even if you managed to get it to ¼ wave up at 160 Meters, about 70 feet, it would be problematic. The DEZepp displays a useful amount of gain over a dipole of approximately 3 dB. Mar 09, 2010 · For portable radio operation, I like End-Fed Half-Wavelength Antennas (EFHWA, pronounced “EF-WAH”). Portrayed below is a complete and self-contained NEC model of one popular form of the end-fed half-wave dipole antenna. The measurements below are for building a simple Dipole Antenna. This worked quite well End-Fed End-Fed Antennas, Ground Systems, Tuning & Matching This program models a wide range of end-fed antennas used with a ground system of radial wires. It utilizes a 9:1 UNUN transformer in order to bring the impedance of the antenna to more manageable values for your antenna tuner. End Fed Wire Antenna Deplo mentEnd Fed Wire Antenna Deployment • Deployed as any wire dipole • Simplifies feed line arrangement and support requirements • Pattern & gain is same asPattern & gain is same as the equivalent center-fed dipole configuration. 2MHz. 500khz from 1. 26 to 27 meters - 85 to 88 ft. Sep 06, 2012 · It is supposed to handle 160 meters to 10 meters which is perfect for my application. 8 and 2 MHz, just above the For most amateurs, the HF bands are much easier to use, and HF antennas need a lot less real estate. The longer the total wire the better. This antenna does require a tuner, but the tradeoff is that it's often easy to construct. Sometimes however, the centre feed is not ideal, for example when you want to use it as a vertical. Outside Rear Wall Antenna Connections. A single wire with high performance on 160, 80, 40 & 30 meters 80M End Fed Zepp Antenna MFJ-1772B. 250 inch diameter copper wire is used to tune the 1. 0. 30 Watts QRP, 40-10 Meters. Overall length is 40 ft. 87-91 DX-EE - “No-Trap” 40-20-15-10 meter dipole or inverted V. 160 meters is mostly a winter band and I do not think I can justify it to myself to dig up the lawn and bury half a mile of radials. Centre fed half wave dipoles make great, simple and effective antennas for the HF bands. NOTE: Antennas and transmitters both are two-terminal devices, and will supply/radiate almost no energy if only one of their terminals is connected. The antenna is fed about 87 feet in from one end of the antenna. I have an EARCH (Emergency Amateur Radio Club, Hawaii) end fed 6-40 meter multiband HF antenna. ca: Electronics. A combination of antenna designs, namely the J-Pole and Zepp along with matching network technologies, are utilized to achieve a resonant antenna design on 6, 10, 15, 20, & 40 meters and a Antenna construction centers around 50 Ohm coax in combination with 300-Ohm transmission line end section. END FED antennaEFHW-8010P Multi-Band End Fed Half Wave Antenna- NO TUNER NEEDED! EFHW-8010P- 200WPortable or Stationary Multi-Band End Fed Half Wave AntennaThis is a 200W version of popular EFHW-8010 End-Fed Half-Wave (EFHW*) antenna for 80/40/30/20/17/15/12 and 10m bands. As with all trap dipoles, this one has less-than-ideal bandwidth due to the load- ing effect of the traps. Commercially available Multi-Band End Fed Antenna that covers 160-6 meters. 5 mH RF choke provide relay operating voltage via the feed line. Perhaps the most popular multi-band “Windom” or more accurately, OCFD was the German-made Fritzel FD4 antenna, described by the late Dr. +12V or -12V resonates the antenna on 80- or 160-meters respectively. The unun secondary taps into the inductor at the 200 ohm point on 80- and 160-meters. 3. I discovered antenna computer modeling as an alternative to the cut-n-try methods. The current distribution of the antenna and matching line is shown in Last month I listed a few of the ideas I'm considering for a better and permanent 160 meter antenna. It is a resonant Half wave on 160m (1. The second piece would be 108 feet. Put the antenna back together, hooked up the coax, and my neighbor and I raised the antenna once again. A Look at the Classical DEZepp The classical DEZepp is simply a piece of wire 1. I've liked EFHW (End-Fed Half Wave) antennas for portable ops and so I immediately  What is the "best" antenna to use for transmitting on 160 and 80 meters? Ultimately simple, it is a single piece of wire, tuned to ¼ wavelength, strung from and fed with 50 Ohm coax at the Results were fantastic on both ends of the range. Simply hang the far end from a tree This is an End Fed Long Wire wire antenna that will cover all bands from 80 to10 meters, including the WARC Bands, as well as 60 meters and MARS frequencies. 160 meters refers to the band of radio frequencies between 1. I have to say this is another wire antenna that exceeded expectations. A dipole has its feedpoint (where it connects to the radio) in the middle of the antenna, but an EFHWA’s feedpoint is at one end. They will provide trouble-free 160-meter operation for many, many  Power-Lite™ for 160 and 75 Meters, handles maximum legal limit 1500 Watts CW/SSB. The antenna described here is used by DF2BC who has limited yard space for antennas. Fed with RG8X coax with a 145 foot run to the shack. I used 3. This worked much better and gave good results on all bands. £9. The random wire antenna is probably one of the least expensive, easiest and cheapest HF antennas to use if you have a tuner and you want to get the "most" out of a length of "random" wire without having to pull out that calculator, doing the math, getting the center insulator built or bought, running the feedline, and all the rest that goes AEcreative 10-160 Meter Amateur ham HF Band Radio Wire Loop Antenna Balun Unun DIY kit T225-2 Type 2 Iron Powder ferrite toroid 2. Making the antenna 102ft long moderates that impedance, especially if the balanced feeder is shortened to about 30-35 feet. This table is provides some idea of the characteristic curve of this antenna which is resonant at 3. Do not place a balun in the coax line. 160-10 Meter W7FG Open Wire Fed Dipole-240' Top Length Dipole With 150' Feed Line 600Ω Open Wire Ladder Line One Conductor from Balun or Tuner to Far End Insulator No Splices, Solder or Crimping to 6-160 Meter J-Pole Jr 34 foot End Fed antenna A combination of antenna designs, namely the J‐Pole and Zepp along with Alpha Antenna's matching network technologies, are utilized to achieve a fair Article by Budd Turner Dec 09, 2019 · Antennas for limited spaces Home of the rugged 160 Meter "sloper" antenna! Want on 160M but cramped for antenna space? We have your solution: If you have 40-50' height and about 60' horizontal space we have the perfect antenna to get you on the air: With the weather changing now is the time for tower and antenna maintenance. End Fed EFHW-4010-1K 40M-10M wire antenna: Amazon. This antenna proves no exception to that rule. The end fed antenna works well in horizontal, sloper, and vertical configurations. lots of coax feeding the wire in the middle like in a dipole with the logistical complexities of a very large dipole or the end fed. Hassle free! Wide bandwidth and no tuner needed!!! Takeoff angle, the antenna has the same takeoff angle as a 1/4 wave vertical, with most radiation leaving at an angle between 20 and 40 degrees. 2 ft (8. Now I can work on the 10,15,20,40 and even on the 80 meters band without the use of a tuner. The radiator is 45 feet of genuine #14 black polyethylene coated Flex-Weave wire. Introduction. More coax is good in this case because its more antenna to radiate. I planned to set up portable and lift the 123-foot wire with some helium balloons and operate in the QRP category. HF End Fed Antenna 1500W 160-10m /Ham Antenna with 9:1 dual core UNUN / 117 feet HF End Fed Antenna EFHW I use this antenna mounted as a sloper, fed at 58 ft. About what one would expect from an end fed half wave – a very high resistance with inductive reactance. Whew, lucky I did not burn something up, I know why it stunk but there are still some out there that figure if their good old trusty tuner loads up and somehow a length antenna seems too work on 160 they are good to go, NOT! It is fed with home-made open wire feedline. This pair will team up nicely to get you want you need for 80 meter NVIS in addition to DX capabilities. 7 ft (20. However antenna system efficiencies of the magnitudes quoted previously may not be realized in practice because of losses in the remaining parts of the antenna system. This antenna is 268 feet long. The tower on the right in the picture supports the antenna as described above. The antenna wire is some of my handy 17 Gauge aluminum electric fence wire. AEcreative 10-160 Meter Amateur ham HF Band Radio Wire Loop Antenna Balun  Build a Space-Efficient dipole Antenna for 40, 80, and 160 Meters by ARRL; Dipole is a multiband centre-fed antenna capable of very efficient operation on all hf Square Antennas -- From K3KY; Half Wave End Fed, No Radials Antenna   Build a Space-Efficient dipole Antenna for 40, 80, and 160 Meters by ARRL; Dipole is a multiband centre-fed antenna capable of very efficient operation on all hf Square Antennas -- From K3KY; Half Wave End Fed, No Radials Antenna   become a Topband curmudgeon – avoiding putting up a 160 meter antenna because it may be helical coil + # turns & diameter of wire + length/diameter of end-loading rod, and you get SX-99 receiver, with an end-fed long wire. The antenna has a full 300kHz bandwidth on 80m between 3:1 SWR points. It needs no tuner on 40m, 20m and 10m. 25 λ long, fed at the center, usually with open-wire transmission line and a tuner at the transmitter. He uses this antenna efficiently on several bands from 160 thru 20m, but he has three different matchboxes, one for Top Band, one for 80m and one for 40/30/20m. ULTIMAX HW-END FED (NO ANTENNA TUNER) 10-80 Meters. WARNING: To avoid problems, the best way to operate 160 with an 80 or 40 meter antenna is to load either or both feedline wires (in parallel) as a longwire. The antenna will act like a "T" antenna worked against the station ground. Let's Build One! The NVIS antenna described is based on the proven information from the military AS-2259/GR antenna. 5% offset from one end, will give access to all HF bands from 80 meters up to 10 meters. The rest of the wire is used for supporting the antenna Construction is much the same as the End Fed Vee. With a wire hanging in the air, that impedance is &quot;infinity. efficiency when we use a 160-meter horizon- antennas fed against ground  Build instructions 1:49 impedance transformer for end fed antennas. The 4-Band antennas are OCF (off-center-fed), with a 23 foot leg and a 45 foot leg, totaling 68 feet. This last part, including the entire antenna, only participates for the lower frequencies. This is an antenna with minimum “handling” and maximum performance'! Description: The HyEndFed multiband Antenna is an antenna for 5 bands 80, 40, 20, 15 and 10 meters amateur band. Applying a feed to any antenna in NEC or any electromagnetic simulation software is about a simple a task as can be conceived by placing a “source” of near infinitesimal size inline with a dipole element. If the antenna is used only for the lower frequencies (80 and 160 meters) the same ratio is  270 feet overall plus an additional 25 feet of UV rope on each end included. 32 / frequency in Mhz: Cut wire slightly longer for connecting insulators and pruning. for feed line is 4KΩ, no impact on 14-30 MHz. If a longer antenna is desired, the provided antenna can be lengthened. 6 February, 2006: I built a half-sized, end fed halfwave for 160 with plans to use it during the ARRL 160 meter SSB contest. The short, so-called counterpoise conductor of an "end-fed" antenna in reality means that this configuration is an off-center-fed dipole, as stated in the graphic. Doing so will interfere with antenna performance. This link is listed in our web site directory since Sunday May 28 2017, and till today "End-Fed antenna for 160-80-40 meters band" has been followed for a total of 4490 times. 16SWG wire Wound. Apr 03, 2017 · End-fed horizontal wire, an EFHW, offers the perfect solution for a wide range of ham activities. FT-140-43 ferrite toroid impedance transformer (UnUn). Positioners. Single Support Gain Antennas for 80 and 160 Meters Introduction On 80 and 160 meters an antenna with modest gain and good front-to-back (F/ B) ratio, along with a steerable pattern, can be very effective for contesting. I have very little space to lay radials on our city sized lot. Standard approach for tuning-and-pruning the antenna is to start with the band where the antenna acts as a 1/2-wave end-fed (40 mtrs for the 80-10 antenna, 20 mtrs for the 40-10 version), rather than for the lowest band. Here is my home HF antenna. This antenna covers 65 kHz of 160 meters, 75 kHz of 80 meters and the entire 40-meter band with SWRs under 2:1. DX Engineering 160 Meter THUNDERBOLT® Vertical Antennas are high-performance antennas specifically designed for use on Top Band. 5 TPI. May 23, 2018 · The practical solution is to keep your 160 meter antenna where it is and add a new simple 80 meter dipole 50 feet or less in height. Sometimes on 80 meters but there the 80 meters 2 * 20 meter dipole fed with open wire gave me more qso’s. tower. 20 Meter Antennas 20M 3 Element Monobander-- From The ARRL K5OE Antennas-- HF Antennas - 10/15/20 m Dipoles VE3GK's Homebrew Site-- 7Element 20M Yagi 63ft Boom 20M Yagi Optimized Wideband Antenna 20M Delta Loop Moxon Antenna Projects-- 17M and 20M Via KD6WD Verticals 17 Meter End loading the F3 40 meter 6. MFJ 1779A 160M Dipole Antennas are 265 ft. This kit contains all parts to make a 10/20/40 meter band end fed antenna. Here is the remote control version using relays. I intend to I have never been a big HF operator but i do enjoy the odd QSO on 160m,80m,40m, 10m. 4MHz and fourth harmonic of 7. If you cannot get the antenna to tune, check the wiring first. Note the 20 meter length of wire is connected to the earth side of the capacitor – make that the rotor 260' is a really bad wire length for an end-fed antenna and a coax transmission line used on 160m. Free shipping. 5 turn per 25mm) Number of turns depends on the length of the antenna. S. One application of this antenna is by using a tower as the top support, and making the guy wires the antenna. Hang it up in a hotel balcony or string it up in the attic. End-Fed Wire Antenna 9:1 Non Resonant (5) G5RV Antenna (2) Half Wave End Fed (16) Marconi Inverted L G7FEK (3) 9:1 unun 300 watts HF 160 to 6 meters. End insulators are supplied making suspension easy. The Hy Power OCF160 160 meter version covers 6, 10, 12, 17, 20, 40, 80 and 160 meters. 4, & 27 MHz if fed 15m 21mhz Mono-band End-fed antenna with mounting bracket £ 44. SWR. Mainly I added HF connectors at each end so that it can go inline in with my coax to the antenna. The limbs of the tree became supports for several experimental antennas used from the 160 to 30 meter bands. 450 watt - In this kitt are all neccessary parts included to DIY a EndFed  The MFJ-1778 (G5RV) consists of a 102 foot flat top fed with a 32. •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. The Jul 07, 2020 · Been using an end-fed Alpha Antenna J-Pole Sr 6-160 meters as my one and only antenna at my current QTH for almost 3 years now. Nov 25, 2007 · A fter over 44 years of enjoying Amateur Radio, I finally decided to attempt Ham Radio’s TOP BAND, 160 Meters. Several comments will follow This antenna is used on 160 meters only and is coaxial cable fed. Since a vertical (Inverted L) is really a end-fed antenna it requires some form of path for the return current which typically is either an However the antenna was unstable for match on the 160 meter. This new open wire area also needs to be sealed very well with silicone or non-conductive epoxy to make it water proof. End-fed wire antennas. Fritz Spillner, DJ2KY, in 1971. Place a 1:1 Balun on the Antenna end of the Feedline. If fed off center, say at 30%-70% point, impedance is approximately 200 ohms and can be used on multiple bands with an antenna tuner. It's up to you to get it as high as  Suggested wire lengths for 1-31 Mhz operation · Current Stock: · SKU: PEF16010 · MPN: PEF16010 · Availability Usually ships in 48 hours. This antenna works quite well no issues. The result is an end feed broadband quarter-wavelength inverted-L antenna. 7th =12m (24. 62 An End Fed Inverted Monoband Vee has a low impedance point around 1/4 wave away from ground, and the multiples of 1/4 wave on the feed side. 95. Mike is operating from the park with a Yaesu FT-891 running 90 watts into the antenna. Designed for limited spaced applications and ruggedly built for many years of service. As you all probably know,I use this comercial antenna with a lot of good rapports with my Bitx projects. I started by pounding a 8 foot ground rod into damp earth at a strategic spot about 5 feet from the base of a tree in my back yard. On 160m I use the zepp antenna reconfigured as a "T" antenna. The W1SFR End Fed 35’ Random Wire Antenna with 9:1 UnUn What is a random wire antenna and how does it work? The term “random” infers that you can use any length of wire you want as an antenna, while that basic fact is true, there are some practical considerations. Being able to feed the dipole from one end gives you more options on how to erect an antenna and makes portable operation easier. the Cross Country Wireless End Fed Antenna matching unit is similar to that described in the 1939 edition of the “Electrical and Radio Notes for Wireless Operators” produced by the UK Air Ministry at the start of World War 2. 5 foot 450 ohm matching section ending in an SO-239 coaxial connector. In the mean time,I changed my 3-bands wire,for a 5-bands wire. 160M Is a Tough Band • Propagation quite variable, signals often not very strong, heavy QRN during the summer –Mostly a nightime band, varies a lot through the night –During the winter, 800 miles or What started out as an 8 band antenna now covers 11 bands. If you want an end fed for 160m that actually works well you would go with a full 1/2 wavelength of wire (about 250ft) fed with a transformer that has a very high impedance Jul 03, 2017 · An odd 7. 1; 80 meter dipole, coax fed. However, when using it with an End-Fed W3EDP end fed antenna . 0 MHz,) performance was sub-par, since the dipole was only 25 feet above the ground, and that’s just a fraction of a wavelength on 160 meters. I found that the antenna had diagram directivity that differs from the old one. FD4 (80/40/20/10 m). 80 Meter Tuner Connected to 160 Meter 1/4 wave wire. Multi-wire Aerial Cage, c. The three wires that make up the end fed antenna are initially cut over size by 40m band section first , then the 80m section, and finally the 160m section. Hf Half Wave End Fed Efhw Antenna 40-10 Meters . End fed half wave antenna: One method of providing a multi-band antenna for the amateur radio or ham bands is to use an end fed half wave antenna. On 80 meters the antenna has about 40kHz of 2:1 bandwidth and 60kHz of 3:1 bandwidth. When calculating optimum lengths, we must use the velocity factor of the feedline. Magnetic Mount Antennas Don't Suck · Simulating the end-fed  ALE and Selcall Antennas, Broadband Antennas, and BBTD antennas for Automatic Link -end of article on Broadband VertaLoop Antenna An offset feedpoint dipole with a 4:1 balun or a coaxial fed fan dipole can provide a But the SWR is good :) On 160 meters SSB with 100 Watts at night, it can still be expected to  30 Mar 2018 The EndFed 40 m to 6 m Antenna is arguably one of the best field Winter Field Day my KXPA100 easily tuned the antenna on 10-160 meters. May 19, 2020 · End Fed Antenna, 160 Meter Antenna, 6 Meter Antenna, Ham & Amateur Radio Transceivers 160 Meters Frequency Band Plan, 2 Meter Antenna, Antenna Signal Meter, 2 Meter Mobile Antenna, Dual Band Antenna, VHF TV Antennas & King, Marine & Air Band Radio Antennas Description. One of those is to tune my two big towers as parasitic elements for a wire driven element centred between them, hung from a catenary rope running between the towers. The main category is End-Fed Antenna that is about End-Fed Antenna projects and plans. Tom, I have used a 135-foot or so end fed No. 160 meter full wave loops won't work well for NVIS when used at 3. Let's take a look at some of the pictures This is the North end of the antenna. Though my FD4 was, of course, not the most appropriate antenna setup to use on this band, Frank actually managed to read my signal. The W3EDP antenna is particularly useful when the station is in a room above ground. A well designed matching transformer at the end feed point facilitates this antenna configuration. As the impedance will be high at the end of the wire, some form of matching unit is needed and a simple parallel tuned circuit housed in a plastic film container is fine (figure 1). Weight, AS-OCF-5K: 6 lb. This design was chosen because of the simplicity, ease of construction and operation. Ferrite Bead. 160m or Top band, as it is affectionately called by it's fanatical aficionado's provides exciting DX opportunities during the . I could hear and work with End-fed antenna un filo e 1/4 d'onda per i 160 metri e cioe lungo 40 metri. Click here for an extensive construction manual of the 1:49 impedance transformer. Model #: 9006700. 40-160 meters. One of the cautions you sometimes see in discussions of the end-fed antenna are "avoid multiples of a half wave. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing antennas. Authentic KB9VBR 2 Meter VHF SLIM JIM amateur ham radio J-Pole base antenna DBJ-1 Dual Band VHF/UHF 2 meter/70cm ham base antenna ANTENNA TRIPOD 29FT ALUMINUM PORTABLE TOWER MAST KIT NEW HF End Fed Antenna EFHW-8010-1K 1000W 80-10m / NO TUNER NEEDED!! / 130 feet long 2 meter/70cm Dual Band Collapsible Copper J Pole Antenna by KCØSDV Free shipping After much trimming, it tunes the full 160m and 80m bands by selecting tap points on the coil with an alligator clip connected to the end of the radiator wire. 90 MHz: This antenna is tuned by the following procedure: 1) Put up the entire length of wire and the 4:1 balun and resonate it to the upper end of 80 meters by lengthening or shortening it. My longest-distance contact on the band was only about 1100 miles away. The UV resistant ABS plastic housing encloses an efficient matching network allowing the antenna to be fed with common 50 ohm coaxial cable. Part of the design is the 9:1 UNUN (unbalanced to unbalanced) toroid matching transformer. " When I hear 160-meter antenna descriptions of this type I say "ouch! Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to operate. End fed long wires must be hung at similar height to get the performance to 160-10 Meter W7FG True Ladder Line Open Wire Fed Dipole 240' Dipole With 150' Feed Line $197. In the end I decided to use a 57m (due to the position of supporting structures) long doublet fed with 450 ohm ladder line and connected to an auto-atu at the base of the antenna. An antenna erected over poor ground (deep shale, granite or desert sand) may appear to be many feet higher over ground than it is. 5 feet of 18AWG Wireman silky 532. In the calculation, a forty meter dipole on 160 meters will be 1. 42 51 –j86 20 meter 8. 6MHz, the third harmonic of 5. The larger the wire, the wider the bandwidth. Off-Center-Fed Full-Wave Doublet Antenna. That meant most of my signal was going up, not out. I soldered my antenna wires to the connector and used tape and sealant around the coax. Serious 160 M ops have a listening antenna focused on Europe: 45-60 Degrees. In practice I found that the tap points vary quite a bit depending on where the antenna is set up and so a SWR meter is necessary to tune the antenna on any site. The model indicated that on 80 meters my quarter wavelength 160 meter Marconi antenna would represent a load of 2867Ω +J117. 8, 23. Some types of antennas that many have found useful are: 40/80 meter dipole fed with feeders shorted, fed against ground; the inverted “L”; the sloper; 160 meter full size dipole (this requires a big lot!), and a vertical (full size or more likely shortened one such as the venerable AV-18HT “High Tower”. 160m Top Band End Fed Antenna -G3YEU. Then, a shunt-fed gamma match at 160 meters could be used on the other side of the tower in tandem with the 80-meter parallel vertical wire for simultaneous resonance at 80 and 160 meters, without sacrificing radia-tion efficiency in either antenna. The overall length of the 160-meter off center fed antenna is 268 feet. A Top Loaded Vertical on 80/160 • Split the difference and load a Tee or inverted L on both 80 and 160 (w/tuner) – 90-100 ft is 3/8λon 80M, 3/16 λon 160M – 160-170 ft is 5/8 on 80M, 5/16 on 160M Radial Systems • Provide a return for the fields and currents produced by an end-fed antenna • The earth is lossy, burns transmitter power Jan 08, 2015 · The bands lie in quite good harmonic relation, and so one end-fed Zepp approximately 69 feet long (flat-top only) will operate efficiently on the 40, 20 and 10 meter ham bands. G7FEK Limited Space Antenna G7FEK Multi-band “Nested Marconi” Antenna - 2008 Version (rev 5) This antenna was first conceived as a simple dual band antenna in 1988, in an attempt to achieve sensible dual band operation in a small garden of 14m (46 ft) length. 4 Apr 2020 I put up a 160 meter end fed half wave antenna to get a feel for how it behaves, gathering more data and experience before the big spiral delta  29 Oct 2018 Here's a quick, easy way to put your 80-10 end fed half wave antenna on 160 meters. . A tuner (not supplied) is suggested for 160 and 80 meters. 0 MODULAR PORTABLE ANTENNA SYSTEM, 6-160M. 3" core 16AWG Enameled Magnet Winding Wire 2KW $49. Away from center, impedance is high so a transformer is used to match an antenna to coaxial cable. On 75 and 80 meters, you should have about a 220 kHz bandwidth. Need a high performance, multi-band, stealthy antenna system that is easy to setup and use and is rated for full 1500 PEP? Get the Bullet Senior, an upgrade to  The unique design characteristics of this 10-160 Meter HF JPole antenna enables it to approach resonance on the major HF bands (10/12/15/17/20/40/80 Meters),  For AM broadcast band listening and short wave listening I use the end fed wire antenna. Antenna END FED HERTZ for 160 mt. THE OCF FD4 (FD3) WINDOM ANTENNA 19 may 2011. Also covers 30-17 & 12 meters with an antenna tuner. An end-fed 1/2-wave reflects its termination impedance back to its feedpoint. Robust, versatile setup options and  The G5RV antenna is a multi-band center-fed dipole antenna capable of MFJ- 1982HP, End Fed, Horizontal Wire Antenna, 10-80 Meters, 132', 800 Watts PEP. 4. Counselman III Created Date: 3/22/2008 2:25:09 PM tical. 2. Being a half wave, no radials or counterpose wires are needed. Mike, K8MRD, did a great video showing the PackTenna End-Fed Half Wave antenna in action. A few months ago I bought a FT140-43 toroid to make myself a homebrew End Fed wire antenna,without the need for a tuner. The wire itself consists of 168 strands of #36 gauge woven copper. Wires The antenna will be resonate at the Amateur bands specified for each model with very low to almost flat SWR. It also works fine on all bands above 40m with a tuner, and even below 40m on 60m, and 80m, although the coax losses will be higher. A shortened multi-band End-Fed Half Wave (EFHW) antenna for 80-10m Steve Nichols G0KYA A shortened multiband antenna, about 23m long, for 80m-10m that offers low SWR (1. 50 Read more; Multi-band/ Half-wave 49:1 matching transformer, ready built with all fittings, just add the antenna wire. This stealthy antenna equals the performance of full-wave dipoles dedicated to a particular band. The current applied to the feed HyEndFed multiband 80-40-20-(15)-10 meters band antenna. 0 4. Figure 3 illustrates how the feed system for my antenna is matched for both 80 and 160 meters. Other antennas like a simple end fed wire often called a long wire antenna would need a good earth connection for the antenna to operate correctly. Alternate Tail Construction. The Wire Size can range from 16 AWG to 12 AWG. If you do have RF problems you can connect an earth or short (1m) counterpoise to the earth (green) terminal. If the legs slope down at the minimum 120-degree angle, you need about 60 feet of ground space. Portable End-Fed 160-10 Meters Dipole Antenna George on 24th Feb 2020 This is the 4th or 5th product that I have purchased 4 or 5 items from ni4l. An SPST switch and a 2. 23 28 –j421 30 meter 7. C $177. OK,back to the Aug 06, 2015 · Before I added 80 meter, I operated that band with a end-fed wire antenna. 5 TPI to make tapping easier and to keep the losses down, 11 turns were sufficient. END FED 20 Meter Half wave Antenna Introduction An end fed antenna is very convenient to use because a single support point puts you on the air quickly. They work well. 0 m) above ground. There is much more that can be written about this antenna and its matching, but that was not my aim. Dual ferrite bead variable 9:1 unun for end fed long wire. 468 ÷ freq (mHz) = Length (feet). Tuner Palstar АТ1500CV (roller inductor) solved the problem. 8th = 10m (28 mHz). Ref. long, ultra-high quality center-fed dipoles. I agree that the name is misleading. 5 7. Check out his YouTube channel K8MRD Radio Stuff It’s a dipole fed off center with a 4:1 balun at the offset feed point. 160m End Fed antenna (February 2015) Some history … About two years ago, February 2015, I had a QSO with ON9CC/OT6M (Frank) on the 160 meter band. 1906. Keep the 80 meter dipole well away from the 160 meter loop. Listening antennas for Asia and Pacific Needed! Feeding an End Fed Half Wave Antenna ½ l •May work (somewhat) since the coax shield acts as a counterpoise: •Coax shield provides the return path for the RF field •Performance will vary with X, proximity to ground, etc •SWR losses on the coax can be a problem •Tuner needs to be at the base of the antenna X RF Field Tuner 80 Meter End Fed Half Wave Antenna Tuner . DX-LB Low Band Dipole Covers 160-80-40 meters with an overall length of only 100 ft. antenna or simply an antenna you take with you for a field operation or when camping. 0 MHz rated at 2 KW (SSB) The DXTREME models are the  Exploring loaded vertical 160m antenna and a 160m kite antenna. SWL NOTE *** A wide range tuner may be needed to tune this antenna to 160-6 meters. Capable of handling near legal limit without core saturation. not only will it tune all hf bands including 160 meters ,but on 10 m. Item #: RW10160 - END FED HALF WAVE ANTENNA; 60 feet of ground space from end-to-end, 7-Band antennas need at least 120 feet of ground space, and 8-Band antennas need 238 feet of On 40 meters the antenna becomes a full wave. Ho costruito un circuito LC di prova, utilizzando una induttanza variabile roller inductor da 140uH e 1 condensatore variabile da 500 pF da 5 kV, piu uno in parallelo del tipo door knob da 500pF 21kV, si trattera poi di leggere i valori di C e di L e quindi di mettere i componenti fissi per ridurre le spazio. Some amateurs obtain good performance with end-fed ½-λ wire antennas. 4 , 9 MHz, 12. 02 2268 –j1565 44 33 Angle of radiation remained identical 6 feet ends During the PACC 2013 I used this antenna for 160 meters. 32, "An Unorthodox Antenna") is an 84' long end fed and a 17' long counterpoise (6. Choke. Dimension "A" is the height of the antenna from the base to the apex, not the length of each of the vertical wires. Aug 14, 2016 · About 10 ft down on the coax I wound an ugly choke for 20 meters to stop cmc on that band. I have heard for many years of the great challenge of putting up a DX antenna for 160 then actually getting it to work. Technical Specs: Antenna Tuner; not Required. Wound at 3. As you see, the antenna is a sloping, center-fed, doublet. 6, 16. The extended G5RV and other flat tops are just dipoles with a different feed method. 160-6 METERS END-FED ANTENNA The ULTIMAX DXTREME end-fed antenna covering 1. As long as possible. This is the feed impedance and SWR of an end fed 80 meter half wave with an ideal 49:1 transformer and good stable counterpoise or ground. The computation method is also touched on. website). END FED ANTENNA. Easy to install and tune. However, just because an antenna can be made to work is no guarantee that it will perform efficiently. Base End-Fed antenna for 20m, 10 meter in length. The loop really, really cuts the mustard on 160, 80 and 40 meters compared to a dipole at the same height. 02 + C $19. On 160 meters you should see about 110 kHz bandwidth. This antenna has been made popular by the Emergency Amateur Radio Club of Hawaii (EARCHI). The 4-band Fritzel model FD4 is a special version of a Windom antenna. New for 2018: AT2K gray front panel. a EFHW), antenna impedance is in the 2000-4000 ohms range. Antenna length based on the following formulars: 1/2 λ dipole (feet)= 468 / frequency in Mhz. There are two main benefits in using an end fed half wave antenna over a co-ax fed half wave dipole. No ground plane or counterpoise is needed so portable operation could not be easier. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. 6 Aug 2015 An End Fed Half Wave Length Antenna is a variation of the much more The center loaded wire I had for 160 meters required to much  19 Jul 2016 A combination of antenna designs, namely the J‐Pole and Zepp along with Alpha Antenna's matching network technologies, are utilized to  25 Nov 2007 K4SX Cage Inverted-L Antenna for 160 Meters is approximately 75-feet in total length and is 60+ feet above ground at the end point. If you only have one support an end-fed antenna may suit you better. A piece of wire of almost any length can be used as an antenna on the HF bands. Hang it up in a hotel window or string it up in the attic. Our best selling antenna is our 160 meter, ruggedized "half-sloper". 5 mHz). The antenna was tuned for 1840 kHz to maximize FT8 digital mode operation. In case of the 10,20,40 meter End Fed, only the first 10,1 meter of the wire will work on 10 and 20 meter. As erected in 2007 January, the center is 20 ft (6. The unique design characteristics of this HF JPole antenna enables it to operate continuously from 10 through 160 meters, with only the use of your wide-band (external) antenna tuner. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. They are 6, 10, 12, 17, 20, 40, 80, and 160 meters. Antenna modeling shows that a resonant half wave wire can be fed at any point (End, Off-Center, Center) without changing gain or efficiency only impedance. 9 m). I plan to raise the antenna by several meters this summer. Terminated Sloper Antenna. Jul 19, 2016 · A combination of antenna designs, namely the J‐Pole and Zepp along with Alpha Antenna’s matching network technologies, are utilized to achieve a fairly resonant antenna design that can be tuned on 6, 10, 12, 15, 17, 20, 40, 60, 80, & 160 Meters. By use of feeders about 66 feet in length it is also possible to use the antenna as a Hertz on 80 and a Marconi on 160, resonating it in each band for best signal-to Using the W7FG Open Wire Fed True Ladder Line Multi-Band Dipole Is Easy! Why use an open-wire fed doublet? Quite simply, they are efficient, broadband, easily tuned with a balanced input tuner, nearly unaffected by rain, easy to erect, stay up, and remain "trouble free" for years. With a handy fixing plate for the toroid, so no longer necessary for RadioWavz End Fed Half Wave EFH Antennas 160 Meters 265' Retail: $164. with 128 foot sides and fed near one corner – just like my friend's 160 meter loop. 132ft inverted L. Some houses don’t really lend themselves to installing a half-wave dipole. 28 feb 2014 CONSIDERAZIONI L'uso di antenne adeguate per le gamme 160 e 80 metri richiedono spazi che non tutti hanno a disposizione, date le loro  The antenna in the main picture is a 6m Half Wave endfed. While dipoles are very efficient antennas, they are not the only way to go. 50 Add to basket; 10m 28mhz Mono-band end-fed-antenna with mounting bracket. Palomar Engineers employs a dual core matching system that offers wide bandwidth (1-61 MHz), 500 watt PEP rating, and a connection for a counterpoise or ground if desired. 160,80,40,20,10 meters are harmonics. 48 118 + j316 12 meter 10. antenna wire slopes to ground at about 45 degrees. The antenna shown covers 80, 40, 20 and 10 meters. 7-band Ocf Off Center Fed Hf Dipole Antenna 1. 17 May 2019 “T. With this ATU the antenna worked stable on the 160 meter with SWR at transceiver’s SWR – Meter 1. k. 66 shipping Mar 19, 2016 · End Fed Half Wave (multiband) – This half-wave antenna is similar to a dipole but the coaxial cable is connected to one end of the half wave wire, allowed easier mounting than the typical center-fed dipole. Manufacturers of High Quality HF END FED Wire Antennas De trendsetters van de eindgevoede antennes sinds 2006 . 57 MHz fundamental resonance. See full list on hamradiosecrets. 75dBi 704 –j1167 vs 10. This may be required if using the antenna as a horizontal end fed dipole with a short length of coax. This article will initially concentrate on the half wavelength of wire and its use as an effective multiband antenna. But performance is down about 8-12db on a dipole on 80m. 0 to 54. The T-top wire vertical hung from the 150' tower the past few years is a great antenna but not without its negatives attributes. The coil does dissipate some power. 00 LBS. Each matchbox is purpose-designed for use with "this" antenna. &quot; In reality, it's probably several thousand Ohms. 3 This antenna was constructed using two 10 foot sections of 4 inch PVC pipe joined, two lengths of 140 feet of #18 wire, and wound at 1 turn per inch over each 10 foot section and the wires connected at Nov 25, 2007 · A fter over 44 years of enjoying Amateur Radio, I finally decided to attempt Ham Radio’s TOP BAND, 160 Meters. Before I get into the nitty-gritty details, let me first make a distinction between end-fed half-wave antennas, such as the ones sold by LNR Precision and end-fed wires that use some kind of tuning to achieve a 50 Ω output impedance. 99 $ 49 . Tunes all bands 160 to 10 meters with tuner in my rig! W4FSV Home › LW HF 80 80m 6m Multiband End Fed Long Wire Antenna. This antenna is usually fed 1/3 from the end, in other words its a 1/3 wire lenght, feed point, followed by 2/3 lenght of wire. " The very valid reason for this is that the high impedance of the feedpoint was outside the range of most transmitters and external tuning units. No radials required, yet still a fairly decent signal. The AT2K 2000 watt antenna tuner covers 160 to 6 Meters with a power rating of up to 2000 watts PEP and features a newly-designed, smaller roller inductor allowing the AT2K to tune 6 Meters without the need for the additional red button as on older models. Earlier experiments with the 160-meter coil consisted of an end-fed 37-foot rain gutter antenna. It would have been my first ever transmissions on this band. 4 Watts are lost through the toroid. PORTABLE END-FED 160-10 METERS HF DIPOLE ANTENNA Bug Out Bag. Motivation for this Antenna 6 Past 160 m solutions motivated me to solve the wind and performance problems at the N9NB ridge top location: • A low-profile 160 m antenna in college for my apartment: “T. You are totally correct to question this. At the antenna end, dc flows through another RF choke. 5 without the tuner. 15 m and 20m the swr is less than 1. 30 Meter Antennas End fed 20/30 Meter Antenna-- From W0VLZ Verticals. In either case, the antenna current (and therefore the radiation) is very small. Bullet Senior End Fed Antenna - 71-268 Feet , 160-10 Meters - 1500 WATT PEP FREE SHIP Bullet Senior End Fed Antenna - 71-268 Feet , 160-10 Meters - 1500 WATT PEP $\begingroup$ @Phil_12d3 Usually when one talks about random-wire antennas, one talks about end-fed wire antennas. (30), 40,80 und 160 mtr . Attic antennas •Many types of antenna can be mounted in the attic IF you don’t have Radiant Barrier (Tech Shield). 160m Inductance-Loaded Shortened Dipole. 8 to 2. This type of antenna is similar to the common half-wavelength dipole, but with one significant advantage. 50. This antenna is a half wavelength at the lowest frequency of operation, and then as the other bands on which t can be used are harmonically related, it provides a multiple number of half wavelengths. 80-meter dipole, for example, shows a very high radiation resistance on 40 meters. Cut one piece of wire to 36 feet. Antenna performance and 2:1 VSWR bandwidth is site dependent and varies with height above ground and surrounding objects. Portable End-Fed 160-10 Meters Dipole Antenna George on 24th Feb 2020 This is the 4th or 5th product that I have purchased 4 or 5 items from ni4l. , but it can also be done, which only reaches 80/40 meters. The antenna behaves like just like the common dipole but fed in one end . However, when using it with an End-Fed HyEndFed® The Ultimate Wire Antenna sinds 2006 . meter band, or with SWR < 2:1 over the entire 75/80-meter band. End Fed Half Wave Antenna, 160 Meter the coax as the return path for the minimal antenna currents. The FCP was developed by K2AV. 5 TPI ( 3. Seventy-two ft. 22 Different Wire Antennas for the 160 Meter Band K3BM SLOPING DELTA LOOP FOR 160 METERS Other 160-meter antennas. This is an End Fed Long Wire wire antenna that will cover all bands from 160 to 6 meters, including the WARC bands, as well as 60 meters and MARS frequencies. It typically is configured as an inverted L for 160 meters, using a small BC variable in series at the feedpoint to tune for lowest SWR (using only 100 watts). Works with a 4:1 UNUN. A big screw is placed in the tree, and a 16 cm length of gray PVC pipe was used as an insulator. 20 Meter dipole for The two test antennas were put up in the same configurations that I intended to use them in the field. If fed at the end (a. Results depend on the height of the wire above ground. The antenna is made for 160 meters and then with the usual formula 142 / freq you get the length of the wire of 77. The Alpha J-Pole Sr Antenna is only 60 feet in length. Now imagine 40 or 80 meters away . Can be used as a end fed shortwave antenna to provide continuous coverage from 500 kHz to 60 MHz. Feedline Lengths: The feedline length is also an important part of a "friendly" antenna design. 2 2. 8m) of 100ft (30. $92. Up to a ¼ wave. That has been my experience with both a 160 and an 80. 6 m); the height difference between its top and bottom is 26. The end fed offers many alternative options. 8 ft (10. You will achieve the strongest possible presence at your power level and be competitive with a 160 meter vertical monoband antenna that is only 55 feet tall! A custom-designed capacity hat system allows you to get on 160 meters with unparalleled performance. Bands160, 160 m to 6 m - Should work with standard  ​160-6 METERS END-FED ANTENNA The ULTIMAX DXTREME end-fed antenna covering 1. When unpowered, the 1:4 unun connects directly to the antenna preserving the original 60-10 meter compromise SWR. I have worked the world with it barefoot on all phone bands with no issues. EFLW-1. We have been building these antennas for over 19 years. A standard recommendation (see QST, March 1936, p. Additionally, a half wave does not require radials for proper performance. for the 160 Meter Band. W4ZCB is situated on a small mountain in North Carolina. On 40 and 80M is where this antenna really shines. antenna’s overall width is 68. 7m) central support and a 12ft (3. By 1937 the Windom was described “as multi-band antenna that can be employed on harmonically related 160, 80, 40, 20 and 10m bands with acceptable levels of VSWR”. One major advantage of this antenna over my resonant end fed is that it does not use any complex matching system, only a 1:1 balun. Last year I put up an end fed at the back of my house, through tree branches, up/down/bent/sloping, from a height of 6m down to 2m. 40 Meter Off Center Fed Antenna 5 Bands With One Antenna Here is the pattern of the 160/80 meter antenna on 3. The MFJ-1778 (G5RV) consists of a 102 foot flat top fed with a 32. This is an End Fed multi-band wire antenna that will cover all bands from 160 to 10 meters, including the WARC Bands, as well as 60m meters and MARS  Between publishing the NCJ article in May 2012 and year end 2016, we to use on 80 meters as an end-fed half-wave-ish L, arguably the best single wire 80 meter And on a small lot that SWR meter is very likely looking to a 160 antenna   My back fence is 50 ft from the rear of the house and not enough room on the property for 80 meter wire antenna must less a 160 meter one, and this to work  The end fed 1/2 wave antenna, much like the 43 foot vertical, has become a cult This is the feed impedance and SWR of an end fed 80 meter half wave with an such as actual burns or on lower bands like 160-meters. The classic center-fed 80 (or 160) meter doublet, with ladder line and a tuner, will work all HF bands, though some trimming of the line may be needed to get it within the tuner’s range on one or more upper bands. The wire  2 Mar 2009 Big HF loop antennas provide great performance, but they can't do everything. 0 MHz rated at 2 KW (SSB) The DXTREME models are the ultimate end-fed antennas with the capability of covering from 160-6 Meters and able to handle legal limit power handling with ease. 4:1 impedance ratio is 2:1 turns ratio. So do all antennas, but not at the design frequency - there, at the design frequency, the terminal impedance is quite predictable. 5 Kw Pep. • Please be aware, the NVIS is not a DX antenna!!! This antenna system was developed for reliable communication (within 400 miles) with 100 Watts or less power. Frequency Coverage: 10-40 Meters / 10-80 Meters An early version of this type of HWV antenna for 160 meters was the "rubber duckie" antenna developed by Joe Moraski, KY3F, in the early 1990s. It works just fine and dandy on 20 meters as well but I'd rather have a dedicated 20 meter loop for 20 through 10 meters. The versatile end-fed wire. the coax as the return path for the minimal antenna currents. But be warned – end-fed antennas can be noisier and also cause more EMC/interference problems. This sounds like your standard HF Yagi, but unfortunately, for most of us at least, full-size rotary Yagis, at the necessary Resonant ½ wave dipoles when center fed will repeata resonant and resistive impedance at odd multiples of the fundamental. First, it is important to understand One side of the dipole goes up from near ground level to about 14 meters (45 feet), then out (25 meters) toward the front of my lot. Page 5: Meter Band MFJ-1778 G5RV Multiband Antenna 30 meter band: On 30 meters the MFJ-1778 (G5RV) functions as an extended double zepp. Loop Skywire (average height of about 35 feet) 80/40 Loaded Dipole (inverted V, center at 21 feet, ends at 5 feet) 80/40 Resonant End Fed (sloper, loaded end at 25 feet, feedpoint at 3 feet) Test Procedure Our 4-Band antennas cover 40, 20, 10, and 6 meters, with no tuner required! 12 meters may also work on the 4-Band 300 watt model. This end fed type of antenna was marketted in the UK and is a useful system for the portable set-up. Jan 27, 2017 · A shortened multi-band End-Fed Half Wave (EFHW) antenna for 80-10m The 80-10m EFHW This is a shortened multiband antenna, about 23m long, for 80m-10m that offers low SWR (1. 10-160 METER 60′ END-FED ANTENNA. Availability: In Stock. 7 dB worse than on forty meters. Apr 02, 2019 · Abstract. 46Mhz, its is obvious that Fo/Mhz VSWR 1. Hand assembled in the US by Bruce Beckett, NU0R. 25 dBi 34 –j429 vs 6. Provided for the operator's 50 Ohm feed line is an SO 239, a silver plated connector having Teflon insulation and a gold plated socket. So this thing is the result: Understanding the end fed half wave. 160-10m, 80-10m or 40-10 meters depending on your available space. The best transmission line to use in such a case is 450 ohm ladder line for its extremely low loss characteristic. Once again the antenna was shipped and received with in a few days. Oct 17, 2017 · An end fed half wave antenna is one of a specific length depending on the frequency that it is to be used on, for example, an end fed half wave antenna for 80 meters is about 130′ long. Price: $157. Covers the low end of 160 Meters plus delivers 9-dBi gain in the 75  There are as many variations of a 160 meter antenna as there are favorite Mine is 100 feet long, fed through DX Engineering's end fed wire balun by a short  26 Mar 2020 The first 6ft (1. It consists of 30ft of wire fed into a 9:1 UnUn (Unbalanced to Unbalanced). I highly recommend AA5TB’s page about this antenna, which explains the concept in more detail. Oct 08, 2013 · Hi folks, Newbie HF Dave here again with an end fed antenna design question. The computer simulations showed that the 80-meter antenna would have You would use either, 42-52, 73-83, 112-123 or 145-155 feet according to the chart above. The basic formula for determining the length of a center fed, half-wave wire Dipole or Inverted Vee antenna is:. Extension To make it a multi band (10/20/40/80m) antenna when little space is available: 1; 80 meter dipole, coax fed. Whether you’re QRP backpack, vacationing, emcomm station, or an antenna neighbors will never see, MFJs got an EFHW for you: MFJ-1982LP, $49. Now repeat this entire step at the other end of the antenna. For that matter, the off center fed types like the Carolina Windom are the same stuff. 6th = 15 m (21 mHz). 00. Latin America Probably doesn’t need listening antenna. 2) Check to see that a good SWR can be obtained in or near 160 m. 34 to 35 meters - 111 to 115 ft. Tradeoff …. HF End Fed Antenna 1500W 160-10m /Ham Antenna with 9:1 dual core UNUN / 117 feet. If it isn't end-fed, then it's usually near-center fed and becomes a dipole antenna instead. I mounted a female coax connector onto an aluminum bracket and clamped the bracket to the protruding end of the ground rod. End Fed Antenna : Click ↓ Votes ↓ Flag ↓ 160m mini portable End Fed Half Wave Tuner, VK5ZVS: 160 meter end fed, G3YEU: 10 20 40m Endfed antenna, PA3FRP: 30 meter End fed antenne, PA1PXL: 40m End Fed Half Wave EFHW Antenna, VK1NAM: 20/11/10m. The Par Electronics EF-SWL is an end-fed short wave antenna optimally designed for 1-30 MHz reception. 160m Top Band End Fed Antenna -G3YEU Coil Details:- 5” (127mm) diameter using 16 SWG bare copper wire. The key to end fed antenna success is the matching network interface between the long wire antenna and the coax feed line and feed line choke at the transceiver. com The antenna was tuned for 1840 kHz to maximize FT8 digital mode operation. Alle antennes zijn gemaakt van materialen van zeer hoge kwaliteit en de beste in zijn klasse op het gebied van mechanische constructie en elektrische prestaties. In place of an active tuner, a 10 turn 4 inch diameter tapped coil wound of 0. 1/2 λ dipole (meters) = 142. Constructing a dipole for 160 meters with a length of approximately 254 feet and a with the 160-meter coil consisted of an end-fed 37-foot rain gutter antenna. For 160 M dipole --That means: 1. doc Author: Charles C. You can also find this magic with some of the newer bands: 60,30,15, and almost 6 meters. So far Jul 15, 2015 · A multi-band end fed wire antenna presents a potential problem in that a ¼ wave length antenna cut for say the 80 metre band will present a feed impedance of about 70 ohms however when the same antenna is used on the 40 metre band the feed point impendence will be several thousand ohms and therefore difficult to achieve a match even with a RadioWavz End Fed Half Wave EFH Antenna 80 Meters 125' 8" Ideal Compact Antenna for Indoors, Outdoors, Attics, for SWL & Amateur Radio. monoband end fed halfwave antenna, PD7MAA: A 9:1 Balun For Your End Fed Antenna Par EndFedz® Antennas are End Fed Half Wave (EFHW) antennas with the match box coax connection at the end of the wire, for convenient and quick stealth portable operations. Early antenna history of the station reveals an experimental multi-wire aerial cage was strung approximately 90 feet in the air above the campus between chimneys of Havemeyer and Schermerhorn Halls, the cage being self-resonant between 200 and 300 meters and fed with single wire feeder at the Havemeyer end. The length of a half wave antenna is calculated using the following formula: L (ft) = 468 / f (freq in mhz). 53 dBi 63 –j74 vs 7. However I do like these antennas, they work almost as good as a mono-band dipole would. 41 watching. This is an End-Fed Half-Wave (EFHW*) antenna for 160/80/60/40m. End Fed HF Antenna Multiband Wire Installation / Setup With an antenna tuner I was able to work - 10M, 12M, 15M, 17M, 20M, 30M, 40M, 80M, 160M I have confirm One end goes straight into the rig, often with no feedline, and the other end in the air attached to something as high as you can find. Another is, "Antenna here is a 100-foot, end-fed wire about 15 feet above ground. Lengths starting from 17' (10 Meters) up to 260' (160 Meters) However, when I operated on the lowest ham band, 160 meters (1. 40 to 41 meters - 132 to 135 ft. 8 MHz. See this link for more info. 8MHz) therefore also resonant on the second harmonic of 3. To make the best use of an End-Fed antenna, it should be fed with a transformer. Portable operation could not be easier. electrical shocks! III 10-160 METRE 130 FT. From this article one may build a 40, 30, 20m end fed half wave antenna, with no special parts needed, or no special skills required. It is two half waves fed in series, the impedances of each end fed half wave adding at the feedpoint. 98. It is an off centre fed dipole, with 10 feet of vertical radiator. May 18, 2019 · Added an additional three or so feet to each length as the wound coils shortened each leg-wire of the antenna (with coil in place 40-meter length still needs to be 25-feet and 80-meter with coil in place still needs to be 38-feet in length). 0 m); and the longest wire is 35. Best to have 2 antennas to compare signals! Devote at least a year to test antenna before giving up on an antenna. Here are some photos of one of my 9:1 baluns. Oct 06, 2004 · 260' is a really bad wire length for an end-fed antenna and a coax transmission line used on 160m. 10 m. Taking the opposite case, a 40-meter dipole fed with 80-meter energy has a low radiation resistance but very high reactance. (That dipole may be cut to length on a specific frequency or it may be "however long you can make it", but it's still a dipole, not an end Aug 12, 2016 · For the past couple of weeks, I’ve been playing with end-fed wire antennas. end fed 160 meter antenna

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