End fed 160 meter antenna. UNDERSTANDING OF SIGNA...

End fed 160 meter antenna. UNDERSTANDING OF SIGNAL TRANSMISSION . MFJ-1984MP, END FED, 1/2 WAVE, 40-10M, 300W, WIRE ANTENNA. It was by Windom's name that the antenna became known. An end-fed 1/2-wave reflects its termination impedance back to its feedpoint. £151. 00 Ex Tax:£105. The final turns ratio turned out to be 3:29. Designed as smarter, stronger, and more elegant multi-band antennas HF EndFedz ® (Patent Pending) The UV resistant ABS plastic housing encloses an efficient matching network allowing the antenna to be fed with common 50 ohm coaxial cable. A combination of antenna designs, namely the J-Pole and Zepp along with matching network technologies, are utilized to achieve a . 00. 40m loaded dipole Years ago the end fed antenna was the most popular HF antenna type used by radio amateurs. 40 Meter 80 Meter 160 Meter. 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. 9 Step 14 You can test the antenna using the SWR meter in your transceiver or an external SWR meter connected to the feed line between the transceiver and the impedance transformer. Off-Center-Fed Full-Wave Doublet Antenna. Total height of antenna in feet. No long counterpoise, radials or feedline required. This formula takes into consideration the capacitive "end-effect" from insulators which shortens the physical length requirement for the equivalent electrical length. Watch the following video to see how to build and erect a basic 80-meter NVIS antenna. Small Coaxial Loop 4. The overall length of the 160-meter off center fed antenna is 268 feet. of #16 "silky" stranded wire cut to one wavelength long on The DX Flagpole Antenna is an HOA + XYL approved, No Radials, stealth HF antenna system that offers you Real DX from 160-6M including WARC bands. Performance may vary with your working conditions. End-feed antenna 8-band QRP low-power 8B20W radio short wave antenna does not need to be adjusted for easy installation. I came across the following antenna which covers the 80-10m bands with no traps and just one loading coil. The radiator wire is custom made for us in 21 mile runs. The UV resistant ABS plastic housing encloses an efficient matching network allowing the antenna to be fed with common 50 ohm coaxial cable. I have grounded the pole to the counterpoise screw. ITEM NUMBER. Part Number: PEZ-EF-4030. The 85 ft wire tuned 10 - 160 meters. I would like to feed it with coax but . End Fed Antenne mit 1:64 Balun selbstgebaut 3. 202997373525. The Antenna Tuner is a 1977 HeathKit HFT-9, a small QRP size tuner of the Cap-Coil-Cap double"L" design. End insulators are supplied making suspension easy. $146. And on a small lot that SWR meter is very likely looking to a 160 antenna through an electrical quarter-wave-ish length of 50&ohm; coax, 60, 80, 100 feet or 20, 25, 30 meters. 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. To tame this high impedance, an impedance transformer of at least 9:1 and as high as 49:1 is I’ve posted about end-fed, half-wave antennas before, but until this weekend, I’d never built one. I wanted to make a all band antenna without the long tail of a G5RV. February, 2006: I built a half-sized, end fed halfwave for 160 with plans to use it during the ARRL 160 meter SSB contest. Home Made Off Center Fed Dipole. 2010. 8. LuckyStiff63. Antenna Diagram • 160 Diagram. Selected category Ham, Amateur Radio Antennas; Other Radio Antennas; Business & Industrial; Number of Outputs. Remember that 6 dB = 1 S unit on a properly calibrated S meter. One Conductor from Balun or Tuner to Far End Insulato r (TM) No Splices, Solder or Crimping to Fail . The only differences are three: 1. 5 feet tall it's not ideal. Hang it up in a hotel window or string it up in the attic. S. The FCP was developed by K2AV. Although this switch was designed for 60 Hz use, when the RF power level is limited to 100 watts, there is no noticeable heating of any of the insulators in the switch. However, a key restriction is its 25W power rating, due to the small matching transformer. This is NOT true for off-center-fed antennas, like end-feed, or the various Windom-type feeds, where feed-line radiation is significant enough to warrant a bunch of power-wasting chokes. Building an amateur radio antenna for 160 meters is a challenge. This antenna is 58 ft tall and is mounted . 2. The antenna wire is connected to the UnUn along with the earth connection and feeder coax. ) Enter a distance between 0 and 250 feet that is less than half the total . The Antenna Tuner will load an End Fed Long Wire effectively, especially if it is cut to aprox. 75dBi 704 –j1167 vs 10. End-fed wire antennas. Fig. Put a telescopic mast against a pole, hook the antenna to the top and slide it out. •Nine popular bands, 80 –6 meters •Add-on 160 meter kit •Only 26’ high Portrayed below is a complete and self-contained NEC model of one popular form of the end-fed half-wave dipole antenna. Attic SWL Antenna. The first relies on the fact that from the end of the antenna a length of wire on or two half-waves long looks very similar. It is designed to match the high impedance of a non-resonant end fed antenna into a range where most antenna tuners and some internal tuners can produce good performance. Free postage Free postage Free postage. 468 ÷ freq (mHz) = Length (feet). 5mm Dia Copper wire Fixing point. . Antenna half sloper per 160m. It also works pretty well on 80 and even 160 meters but at only 27. 65 metres of wire on a 9 metre fibreglass pole. Some amateurs obtain good performance with end-fed ½-λ wire antennas. In addition to the connections to the antenna wire and coax, the instructions suggest MyAntennas End-Fed Half-Wave Antenna for 80 – 10 Meters Bottom Line The EFHW-8010-1K provides an easy- End-fed wire antennas are a different beast. The entire antenna is #12 stranded insulated copper. Will also work on many other bands with use of a tuner. 99 MA-W5GI MYSTERY ANTENNA 80/6 METERS - $98. ARRL Antenna Book; Antenna Modeling for Beginners; HF Digital; Circuit Simulation; History Of QST; Arduino; Arduino2; ARRL Handbook 2020; Arduino3; End-Fed MA160V 160-Meter Vertical Monopole Antenna. 05:1, was the lowest of all three antennas since the transformer was tuned for impedance match at 30 meters. I have very little space to lay radials on our city sized lot. The current distribution for 80 and 160 meters. I have a 135ft end-fed random wire sloper antenna with the 9:1 Unun at 25ft, and the far end about 50ft up. 99 MA-W5GI MYSTERY ANTENNA 15 METERS - $79. Homemade Carolina Windom antenna. Shown below are the radiation patterns for the Hy Power Antenna Company's 40 meter off center fed antenna mounted 60 feet above average ground. Length. Publications & Online Store >> Product Notes >> 160 Meter Antennas. End Fed Half Wave Antenna, 40/20 meters, 100W SSB/CW 25W DATA/AM, 66 ft. An advantage of end-fed antennas is of course the simplicity, especially for fieldwork this is a huge advantage. Mark N3RMR, Mark has been kicked off everywhere on 160 meters, 1850, 1895, 1930, and 1940, . This inductance has the effect of bring the resonances a bit . End Fed Dipole with a 1:1 Balun | QRZ Forums. Here's a quick, easy way to put your 80-10 end fed half wave antenna on 160 . 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 . C $249. 160 Inverted L Antenna – by N4JTE. 25 feet of coax feeds into the 9:1, then a 53 foot wire antenna laying over furniture, on carpet, hanging down into first floor great room, etc. 2:1 160 Meters: 1. The basic formula for determining the length of a center fed, half-wave wire Dipole or Inverted Vee antenna is:. Find Parts and Accessories end fed 160 meter antenna KEYWORD and get Free Shipping on Most Orders Over $99 at DX Engineering! Keep in Touch with DX Engineering - Sign Up for Our Newsletter! . This wire should typically be 3-4 dB down from that of a full size 1/4 wave 80 meter vertical when used with the same ground rod. Quick video on an inexpensive and relatively compact antenna to get you on the top band. 5KW PEP ununs. plan on 160 thru 10 meter performance. fed with 450-Ohm ladder line, and apex-ed at about 85 feet on the tower. 44: 1. Full Size Quad Loop 2. A multi-band wire antenna that performs exceptionally well even though it confounds antenna modeling software Article by W5GI ( SK ) The design of the Mystery antenna was inspired by an article written by James E. Portable End-Fed 80-6 Meters Poly-Stealth Dipole Antenna 300 watts . 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 . 0 TO 54 MHz. The end fed 1/2 wave antenna, much like the 43 foot vertical, has become a cult phenomena. Wire lengths for the 4:1 ratio in models 4932 and 4935. It's an 1/8 wave vertical on 160 meters also. Find this Pin and more on TV. The end fed half wave . In a balanced center-fed dipole or a loop this is inherent . Note the lobes in the right-side model showing the lower take-off angle of RF: Because the dipole – and therefore the vertical - would be limited to 25’ height (a small fraction of a 160 meter wavelength,) we knew getting it to tune up on frequencies as low as 2. VHF-UHF Vertical Antennas. 7. fairly low swr on both 160 and 80 meters when fed about 46 feet off one end using a 4 to 1 balun (200 ohms). Skip to the beginning of the images gallery . £66. Antennas for 160 – Chiburban Radio Mobileers. 160, 40, 30, 15 without. 67 dBi 155 +j354 vs 8. ULTIMAX 100 END FED ANTENNA 1. One end goes straight into the rig, often with no feedline, and An advantage of end-fed antennas is of course the simplicity, especially for fieldwork this is a huge advantage. com. QUARTER WAVE 80 METER VERTICAL ANTENNA. Live. Distance from antenna base to the center of the coil in feet. 53 dBi 63 –j74 vs 7. 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. End-Fed Wire Antenna 9:1 Non Resonant (3) G5RV Antenna (2) Half Wave End Fed (28) Marconi Inverted L G7FEK (3) OCF Dipoles (Windom) (3) ZS6BKW (2) 2M (3) 4M (3) 6M (6) 10M (32) . Add to Cart; MFJ-1982MP EndFed 1/2 Wave 300W 80M-10M Wire Antenna 132 feet. Very efficient end fed antennas. Description: Commercially available Multi-Band End Fed Antenna that covers 160-6 meters. Note the 20 meter length of wire is connected to the earth side of the capacitor – make that the rotor . The antenna is effective and the materials and construction are of a very high quality. The End Fed Half Wave antenna or the popularly known EFHW antenna has been around almost ever since the inception of HF radio. Put the strain relief at the wick and solder eyelet on the antenna, suppose 40 or 80 meter band off. I recommend using a link End-Fed Wire Antenna 9:1 Non Resonant (3) G5RV Antenna (2) Half Wave End Fed (28) Marconi Inverted L G7FEK (3) OCF Dipoles (Windom) (3) ZS6BKW (2) 2M (3) 4M (3) 6M (6) 10M (32) . 500’ roll of wire on ground 3. This 10-160 Meter EFHW HF antenna enables coverage of major HF bands (10/12/15/17/20/40/80 Meters). AB0X Roof Loop 2. The antenna shown covers 80, 40, 20 and 10 meters. 0 MHz was problematic. Click & Collect. ~ 1 dBi @ 16° for 20 meters – nice low angle. Here is my first attempt at an article. End loading the F3 40 meter 6. 8-2 MHz) operation, an antenna with an electrical length of 74 feet . 132ft inverted L. The Alpha 6-160 is an HF J-Pole that covers 160 to 6 meters. The 160-meter coil plus an 80-meter mobile antenna were placed at the far end opposite the feed point. It performs on it's primary and harmonic operating frequencies as a standard ladder-line fed doublet. As designed, the matchbox can handle up to 150 watts PEP. Broadside faces central Europe which is my target area. com ham radio guide. G8ODE. That means that the matching characteristics of, say a 40m EFHW will be very similar to those of a 20m EFHW. ground rods at the ENDS of counterpoise radials. Feeding an end-fed Zepp. For that matter, the off center fed types like the Carolina Antenna modeling suggests that the impedance is closer to 1800 ohms depending on the “counterpoise” length used. MFJ-1982HPEND FED, HORIZONTAL WIRE ANTENNA Note: This listing is for one MFJ-1982MP 800 Watts PEP 80-10 Meters 132' Length 75', 3/16" 100% Dacron Polyester Rope FULL HF Coverage, no tuner needed on most frequencies. MA160V is a compact efficient vertical especially designed for working top-band. The coupler is a tuned impedance transformer, not an antenna ‘tuning’ unit. 40/6 METERS - $61. 5m) end-fed is insulated for safety. If one were to forgo 160 meter (1. You can even use a tuner to achieve a near perfect SWR on these bands, or an external tuner to match 160 . the tower and bean on top, ag as an other conductors connected . It is designed as a highly portable wire antenna, easily set up as an Here are the final numbers (in my opinion) in green below that would be good for a long-wire antenna: ( You may want to make a note of them) REVISED: 29 35. not only will it tune all hf bands including 160 meters ,but on 10 m. Portable DS1 Vertical Antenna 40m-10m. 6A f. In more practical terms, the average backyard antenna builder is unlikely to lay down a major radial field for the most efficient 160-meter operation. Add to Cart; MFJ-1982HP, END FED, 1/2 WAVE, 80-10M, 800W, WIRE ANTENNA. You would use either, 42-52, 73-83, 112-123 or 145-155 feet according to the chart above. ULTIMAX HW-END FED (NO ANTENNA TUNER) 10-40 Meters. 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. Some houses don’t really lend themselves to installing a half-wave dipole. To make the best use of an End-Fed antenna, it should be fed with a transformer. Made in USA. I sent the company an email with installation pictures and I asked for assistance. counterpoise , a 67 ft. Ideal balance of strength and flexibility. 99 for the antenna alone, 61. HF Wire Antennas. 5 without the tuner. End-Fed wires for NVIS – Practical Antennas. The traps are made of very thin Teflon coax cable as the current version was created just for the PACC contest where I’m in the 100 Watt class. 40m - 80m - 160m Short Dipole Antenna. 7m) central support and a 12ft (3. Click to enlarge. Carolina 6-160 Meter J-Pole Jr 34 foot End Fed antenna. FULL HF Coverage, no tuner needed on most frequencies. 5-30 MHz Line Isolator Low Band - Coax Dual Core . Reliability; 96% Nominal Velocity Factor; Nearly Unaffected by Rain, Unlike 450Ω or 300Ω Twinlead; Most Efficient Dipole Antenna; USA . An end-fed half-wave antenna looks like a "dream" antenna for HF. AU $146. Can be fed with a 1/4 wave ladder line, but will be single banded. Operate 160, 80, 40, 20, 15, 10 Meters HF mobile and 6 Meters VHF with just one amazing antenna! GRA-1900T features low SWR and 120 Watts power handling for a super-performing mobile HF/VHF antenna. 6 and 5 Mhz. KD4JM. 3. Especially for chewing the rag with locals where an NVIS antenna would be . Carolina Windom. Rappaport, “160 meter transmission line antenna,” Ham Radio Magazine, May 1985, pp. Tradeoff . The MFJ-1982 resonates slightly above the 30-meter band, so a tuner is normally needed for transmitting. 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. Double Extended Zepp Antenna. · 1y. Icom 746 and AM DXing - AbeCollins - Radio Road. An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band. Manufacturers of High Quality HF END FED Wire Antennas . 25 dBi 34 –j429 vs 6. W8AMZ 160m Sloper. The Matching Section is 450 Ohm Open Wire Feedline and is a compromise impedance between the 5/8 Wave antenna elements and the feed point, A 4:1 Current Balun. These fact many use this antenna indoors and it works well, but antenna location is always a compromise of some sort. 5 kW. View All Antennas: VHF-UHF. Enter a length between 1 and 250 feet. After installation, my SWR readings were off the scale on all bands except 20 meters. Other bands will require a tuner. Due to the short length, this will probably continue as my only 160 meter antenna at this QTH. The 4-Band antennas are OCF (off-center-fed), with a 23 foot leg and a 45 foot leg, totaling 68 feet. The wire is quite stiff , 160 AND 80 METERS April 2013. can be cut) Now imagine 40 or 80 meters away . Conservative power handling capability on 160 meter band. MA-W5GI MYSTERY ANTENNA Sr. 6. The close spaced wire elements on each leg introduces two added resonant responses BELOW the antenna's fundamental operating frequency. Explore. Gap = 1505 kHz at 13. Nick Toparcean (AE5VV) used the standard dimensions for 10-80 m, and an 85 ft long wire radiator for 10 -160 meters. 9. 4. VHF-UHF Beam Antennas. No sunshine and about 43 degrees! The extreme case of imbalance when feeding a half wave antenna occurs when it is fed from the end. It needs no tuner on 40m, 20m and 10m. 5 41 58 71 84 107 119 148 203 347 407 423. W4NFR. It worked well in it’s only test, and will be reconstructed. 2475 MHz (19 feet) In general, wider gaps are preferred. In fact, it looks more like an end-fed 1/4 wave 160 meter antenna (130 ft or 39. Mini UnUnTenna 40-10m 3. 48 118 + j316 12 meter 10. The UnUn is fixed to a pole at the furthest point from the house. Cover all HF bands, including WARC bands, from 167 Meters to 6 Meters. B. C-type antenna 80-160 meters (ideal setup) This is possible as I have a small crank up tower behind the house with that height. Bands160. 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. HFedz 10m-80m End Fed Half Wave (491 EFHW) HF HAM Radio Antenna. The OCF or Off Center Fed Dipole antenna is much like a conventional dipole antenna in that the formula you use to calculate the length of it is the same. Portable Tri-Band Vertical Antenna 40/30/20m. Initial installation should utilize a length longer than the recommended length shown. It tunes pretty well on all bands, but I'm adding some counterpoise wires to improve 160 & 80m. OVER 4000 SOLD WITH PERFECT SUCCESS. It would have been my first ever transmissions on this band. 0 MHz band in three segments. Put together a second story, indoor, end fed using the 9:1 from your workshop. 26 shows the patterns for 160 meters, with the . Other 160-meter antennas. Between watching unending Law and Order repeats and the XYL’s Lifetime movie sagas, compounded by a dead 40 meter band here at night, I became so totally bereft Review Summary For : QSO-King End Fed Antennas by NUØR; Reviews: 36 MSRP: $60-80; Description: 160-6 meters. 1 (2) Items (2) 3 (1) Items (1) Other 160-Meter Antennas Some amateurs obtain good perfor- mance with end-fed 1/2-X wire antennas. HF Military. The design seemed relatively simple to build, requiring only a single toroid and a Top Band, as 160 meters is called, presents a a challenge because the long wavelength leads to large antennas. Get it as soon as Wed, Feb 16. But be warned – end-fed antennas can be noisier and also cause more EMC/interference problems. Fortunately the line loss on 160 meters with a 5. Although, loading on the 80, 40, 30, 20, and 15 meters bands did not present as much of a problem and I could get an SWR match under 3:1 in a few small portions of those bands. 4 out of 5 stars. Terminated Sloper Antenna. About End-Fed antenna for 160-80-40 meters band The resource is currently listed in dxzone. antenna. 160-10m, 80-10m or 40-10 meters depending on your available space. Quick deployment. The main category is End-Fed Antenna that is about End-Fed Antenna projects and plans. HyEndFed multiband 80-40-20-(15)-10 meters band antenna. Tip: this is easier to do with the coax not connected to the feedpoint. End Fed Half Wave Antenna, 40/30 meters, 25 W CW/SSB, 54 ft. The 2:1 SWR bandwidth is . Earlier experiments with the 160-meter coil consisted of an end-fed 37-foot rain gutter antenna. by Luis Alberto Gonzalez. Weight. The reference antenna is an end fed inverted L with a counterpoise of 60 100' radials. The Hertz antenna is an antenna with an electrical length of a half wavelength at its resonant frequency. It is an off centre fed dipole, with 10 feet of vertical radiator. Longer wire is always more Top Band, as 160 meters is called, presents a a challenge because the long wavelength leads to large antennas. As typically installed, it is a compromise antenna but great for portable use because it is easy to pack and easy to install. HF Vertical. K9AY 7. I think the matchbox is terrific. $106 . Show all 160m End Fed Half Wave kite antenna. When autocomplete results are available use up and down arrows to review and enter to select. 4 Watts are lost through the toroid. At the lower bands, make sure you are operating at an SWR of less than 2. Reviews: 24. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing . All DXTREME models are a different design that work most efficiently with the length of wire is sold with, is not just a common . The Sloper Antenna Explained With A Twist. 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 The challenging UNUN Transformer for End-Fed Half-Wave antenna. With a tower-fed Sloper sygtem. For my purposes, the end-fed half-wave (EFHW) antenna is a . Its main advantage was that it could easily be matched to a tube transmitter. ) Tried w/wo CM choke, Ground at window Tried various coax lengths to find resonances Tried all bands where no tuner needed Highest CM sometimes outside (Standing W) Keep in mind that an EFHA is a random wire antenna on any band other than the one it was cut for. The Balun on the end matches the 450 Ohm Open Wire Line into a 50 Ohm Coax Cable. W4ZCB is situated on a small mountain in North Carolina. Since a vertical (Inverted L) is Building an amateur radio antenna for 160 meters is a challenge. 7 Bands are 7,10,14,18,21,24,29,Mhz Added frequencies with antenna tuner are 1. Category. If the sloper is fed at the . 106 sold. Cobweb Antenna 7+3 band 7 10 14 18 21 24 29 MHz. End fed vs. Experimenting by slightly changing the wire length (+ or -) is encouraged to provide best based on the end-fed zep antenna as once trailed from Zeppelin Airships. 260' is a really bad wire length for an end-fed antenna and a coax transmission line used on 160m. HWEF 1. At the other end, about 8-feet from another property line, a WA1FFL Ladder-Loc insulator was attached to the wire along with one side of a 450-Ohm ladder . Other than loops, all antennas are dipoles whether you intend them to be or not. After watching the video, please read the field test stories below the video as this design flies in the face of a theoretical 80-meter NVIS antenna design. 160 Meter Antennas 160M/80M Coaxial Receiving Loops-- By KC2TX Balloon and Kite Antennas On The Top Band -- From G4VGO Battle Creek Special-- Info From PI4CC Contest Club . Can be fed with a broadband high-impedance transformer for multi-band use. But the other bands, 30, 15, and 12 Meters, may be a problem obtaining a good match. $89. level 1. By. However, when using it with an End-Fed . The red line represents the horizontal radiation pattern and the blue line represents the vertical take off angle. Traps for 80 / 160 meter band Dipole or inverted V tuned as a pair. 8m) of 100ft (30. Looking at the current distribution, it will be seen that the A loop fed in the southwest corner will have a few dB (3dB or more) gain favoring the northeast corner. Results depend on the height of the wire above ground. Related: 160 meter dipole 80 meter antenna antenna tuner 160 meter end fed antenna 160 meter loop antenna. Sky Hook-II is BOTH! I designed Sky Hook-I for 40 through 15 meters. The loop really, really cuts the mustard on 160, 80 and 40 meters compared to a dipole at the same height. The wire is more expensive than others but resists kinking and has a very rugged PVC coating. £54. Showing posts with the label 160m End Fed Half Wave kite antenna. DX from an average-size house lot. In place of an active tuner, a 10 turn 4 inch diameter tapped coil wound of 0. Elevation patterns and Azimuth patterns at the peak of low angle radiation are plotted for all ham Tunes all bands 160 to 10 meters with tuner in my rig! W4FSV. Get the best deal for End Fed Antenna from the largest online selection at eBay. This worked much better and gave good results on all bands. Get link . The CHA LEFS is a six-band, no-tuner, High Frequency (HF) antenna for use on the 40, 20, 17, 15, 12, and 10 meter Amateur Radio Service (ham) bands. In many cases, the impedance can be transformed with the help of a 9:1 unun (unbalanced input . The SWR for 30 meters, 1. 6d loss at 10mhz per 100’) is calculated to be only . While dipoles are very efficient antennas, they are not the only way to go. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. 23 28 –j421 30 meter 7. A so-called random wire antenna is an end fed antenna. 000 MHz 300 Watts. If the legs slope down at the minimum 120-degree angle, you need about 60 feet of ground space. Here's my version. 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. HOA Stealth antennas are a must for me and the end fed wire antennas are my best bet it seems. Using EZNEC, Woody calculated parameters for a base . The Title of this antenna is not the 40-6 meter End Fed HF antenna I The EFHW Alpha Sr is an end fed half wave HF antenna, nicknamed the JPole antenna due to the 2 parallel elements, is only 60 feet in length. Can be tuned and limited to a single band. 2019-03-20 Today is the first day of Spring but it sure doesn't feel or look like it. This is a great end fed antenna complete with a 9:1 Unun. Homemade Ant . to leave the antenna up a few days and make a few contacts. I have limited this area to 150 feet (~45 meters). Antenna wire 2. REVISION NOTE: We had a note from James, KB5YN, pointing out that one of my so-called GOOD numbers was 220 feet. 800 MHz to 14. It is surprisingly effective and rewarded me with a surprise contact on Publications & Online Store >> Product Notes >> 160 Meter Antennas. The shortest antenna that has a chance of tuning all bands has an electrical length of 143 feet and should be trimmed to give a quarter wave resonance at 1. The end-fed feature adds convenience, and makes it very portable. If I shortened the antenna by a few feet, I might be able to use 12 . The EFHW Alpha J-Pole Sr end fed half wave HF end fed half wave HF antenna is only 60 feet in length. 99 . In the case of the end fed antenna it is an unbalance antenna so it (160-80-40-30-20-17-15-12-10 meters – 71-268 feet length options, 14 gauge insulated wire for abrasion resistance, dog bone end insulator). Quick setup, no radials, low SWR, neighbor friendly. Taylor, W2OZH, in which he . Even if you managed to get it to ¼ wave up at 160 Meters, about 70 feet, it would be problematic. This item LWHF-160 160-6m Multiband End Fed Long Wire Antenna Active Antenna, 10 kHz - 30 MHz Mini Whip Active Antenna for Radio Communication, with High Accuracy HAM HF Band Radio Wire Loop Antenna 1-30Mhz shortwave Radio The transformer was attached to the 30 meter EFHW antenna and turns were removed for best match to 50 ohms. Obviously, removing the stub and replacing it with a massive 65ft tower is not the thing to do. 99 MA-W5GI MYSTERY ANTENNA Jr. It’s a dipole fed off center with a 4:1 balun at the offset feed point. Kevin erected this very long end fed wire to see what he could do in this fairly new amateur/ham radio band. This is not a bad compromise considering the low angle that is achieved. Include description. I mainly use it to work fellow PVRC Club members, late in HF Contests. Two vacuum relays are used to select the correct amount of the coil for a particular band segment. It can be fed at the low impedance point at the centre as a half wave dipole or fed at the high impedance point at either end. A vertical tends to be more noisy than a horizontal wire, and 80 meters is a noisy band during the day. Power Handling. Richard Marris (G2BZQ) made a compact version by configuring the radiator wire as a spiral (ref . This paracord was pulled taught and tied off on a cleat. The Hy Power Without any change to the aerial wire, there is a way to use an already installed and working 160 meters Inverted L over FCP with Isolation Transformer (160 L/IsoT/FCP) as an excellent 80 meter end-fed halfwave L (80EFHWL). It is 80 . You will need several components for a successful deployment of the end fed . I have an end-fed 3/8 wave longwire antenna for 160 meters that is currently being brought directly to the tuner. The End-fed Half-wave (EFHW) . Ideal for 160-6m and when used with a good quality ATU a perfect match can be obtained on all bands. Rugged weather-resistant 50-Ohm matching network. UJM-150. The antenna cannot be an actual 1/4 wave length on any ham band. , 84 / 5 ≈ 17 ft). operators and those who reside on The most simple is a 75 meter dipole fed with open wire or ladder line, tuned up on 160 meters, as shown in Figure 1. 160m Endfed Antenna DIY Earlier experiments with the 160-meter coil consisted of an end-fed 37-foot rain gutter antenna. 1 (2) Items (2) 3 (1) Items (1) Field strength of my 160-meter 1/4λ verticals, at my present location, stopped improving with around thirty-five ~1/4λ long ground-contact radials. Touch device users, explore . The large diameter yields broadbanded coverage of the 80 Meter Band. 8 MHz and also on 160 meters. 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 Description. What we used to call a random length, end-fed wire belongs in this group as much as the 160-meter inverted-L with 64 radials at its base. C $50. • 160 through 6 meters! • 4:1 balun is wideband and allows this to work. Below are presented the results of EZNec modeling of a 90 ft long End/Base-Fed Inverted-L, 45 ft high and 45 ft across. The end result would be an antenna that is usable on seven ham bands. The peak radiation angles and relative antenna gain for each bands are: ~ 5 dBi @ 57° for 10 meters – impressive, but high angle. Portable EFHW Antenna with Tuner 40-15m, & 80m model. At the Junction Box , coax inner connect to the antenna wire (blue) and braid connected to the brown wire to the ground spike. However, the tuning was not broad on 80 meters as I had wanted. $13. HF EndFedz ® (Patent Pending) The UV resistant ABS plastic housing encloses an efficient matching network allowing the antenna to be fed with common 50 ohm coaxial cable. 45. PLEASE READ FULL LISTING AND PLEASE LOOK AT EVERY PICTURE!!I HAVE ANTENNA HARDWARE LISTED IN MY OTHER ITEMS FOR SALE TOO. The antenna consists of a 53' wire and a specially designed matching device that . Posted on September 6, 2012 by Webmaster. It is simply a half wave end-fed on 80m which will resonate on all multiples of that frequency, loaded with a small inductance near the feed end. Fast & Free shipping on many items! . 8-61 MHz, 500-5000 Watts PEP. Antenna Wire Lengths The following are the recommended wire lengths in feet to cover 160 – 10 meters. On a 9:1 end fed, the coax is an integral part of the antenna and radiates about as much as the wire. Note: The Red & Blue colours are used simply to emphasise the vertical & horizontal components of the antenna current. BP Filter 12 - 10 meter Band $ 139. 95. Balun model. Hyendfed Antennas, here you can buy your HyEndFed Antenna, and find all information about this great antennas and our HyAndFed Company . This online calculator tells you how the amout of inductance your loading coil will need to have. Thus 8, 16, 32, 68 lengths are ruled out. Good grounding was a constant 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. The antenna is fed with open wire half way the vertical part on the left (red circle). 30 Meter Antennas End fed 20/30 Meter Antenna-- From W0VLZ Verticals. Good grounding was a constant problem, so an Inverted-V using both coils was eventually constructed. Pinterest. All. Made by a HAM for Hams. Worlds Best Made 160 Meter Half Sloper Ham Radio Wire Antenna 1KW SSB. 160-6 METERS END-FED ANTENNA. 20 Meter Antennas 20M 3 Element Monobander-- From The ARRL The W1SFR End Fed Antenna is 35′ long and made with 18 ga Davis RF “PolyStealth” antenna wire, or Wireman “silky” 18ga. Einstellung für endgespeiste Antenne für 10,12,15,17,20, (30), 40 . Both wires tuned 10 – 80 meters. 10M Antenna. Max length 65 ft Minimum height 30 ft Should be connected to . VHF-UHF Satellite Antennas. Length, Stainless Steel Hardware, SO-239 Connector, Each. It is called the EFHW-8010. The current distribution (pink line) is identical to what would happen on a center-fed half-wave dipole. Title: K9MBQ COAX This antenna is a full wave antenna on forty meters but has to be fed at a different location if one wants to use 50 ohm coaxial cable. Shot a rope over a tall branch, about 60 feet up, to pull that end of the wire up. 30 m and 15 m - with external tuner and at full rated power. With this length of wire a coil of 11 turns is required, resonating the antenna on 1. $118. Longer wire is always more 1/2 wavelength long antenna, fed on the end. e. | Browse our daily deals for even more savings! | Free shipping on many items! . Because of its low SWR, can be tuned (with the use of an antenna tuner) to 60, 80 and 160 meter bands. 10m -160m Multiband “Z” Antenna. Bullet Senior End Fed Antenna - 71-268 Feet , 160-10 Meters - 1500 WATT . ULTIMAX HW-END FED (NO ANTENNA TUNER) 10-80 Meters. $97. His results were quite good, considering the low power and antenna requirements of this band just below the standard broadcast (MW) band. The end fed half wave, on the other hand, is exactly a half wavelength long on the . 950MHz with an SWR of 1. A simple tuner will match over something more than an octave (2 x frequency) so . Small Coaxial Loop tuned for specific band 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. A tuner (not supplied) is suggested for 160 and 80 meters. 99. Put the cover on the transformer (see 9; a rubber gasket and screws for the enclosure are included), attach the counterpoise wire, antenna wire, and coax. In 1937, the Windom was first described as a compromise multiband antenna. Portable UnUnTenna Plus 40m-10m. 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 thingy build . The Stock availability and shipping volume can delay shipping. com in a single category. ~ 0 dBi @ 25° for 40 meters. Long Wire Antenna - 160-6m - Mulitband End Fed. That is: 468 / Frequency Mhz will give you the overall length of the antenna. For Inverted-L Antennas: This is not quite so easy. Worlds Best Made 160 Meter Half Sloper End Fed Ham Radio Antenna 1KW SSB. G0CSK EA5AVL G8ODE OCT 2008 iss 1. A 20 meter trap inductor wound from the coax defines the end of the lower half-wave section. a really good ground system can make the antenna perform ag well aa a tower fed Sloper. Also, note that there is small 6-turn inductor wound into the antenna wire about 6-feet from the matching unit. Teil - FUNKWELT - HB9HJI . The 1-16 of 134 results for "160 meter antenna" Amazon's Choice for 160 meter antenna. 5 ft and 186 ft / 33 ft. W1JD’s 160 Meter Antenna. 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 . The S9 is a 43 foot element in a 38 foot mast that is tough, yet ultra-lightweight (3. The UV resistant ABS plastic housing encloses an efficient matching network allowing the antenna to be fed with common 50 ohm coaxial cable on the SO-239 connection. Inside the switch box. We continue our antenna offerings with this single band, 80m-10m end fed half wave wire antenna. Now the fun starts. It was a 40 meter Carolina windom. 1 END FED INVERTED “L” ANTENNA FOR 160 – 80 – 40 METRES. But its performance depends heavily on a well-designed and carefully constructed 49:1 unun, which matches the long wire impedance to within tuning range of operation. 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. EFLW-3K End Fed Long Wire Antenna 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. Antennas: VHF-UHF. Building Instructions for the end fed antenna Building Instructions for the end fed antenna, note which toroidal you use. HIGH QUALITY: $38. Operating 160-meter NVIS In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). 160/6 METERS - $179. View All Antennas: HF. 5 KW 3. Can be vertical or horizontal (or both). As an example, a 28-31 foot wire will typically allow 40 thru 10 meter coverage and a 43-50 foot wire will provide access to 80 thru 10 meters. Wire Antenna Trap Kit. If you run more than 500 watts PEP and need a high power 9:1 unun for your end fed antenna, check out the 1-7. Post 2136. Years of perfecting the manufacturing process, length, and color has enabled Alpha Antenna to offer a spun fiberglass antenna mast that is so resilient & stealthy that it can be used as a 6-160 meter base antenna even in HOAs. 99 $ 118. New Ham Radio ANTENNA DIPOLE Center RF Connector "just add . 2) Check to see that a good SWR can be obtained in or near 160 m. The MA160V features a heavy-duty high-Q copper loading coil plus a wide 100-inch . com, at End-Fed antenna for 160-80-40 meters band - viewer resource page via dxzone. No antenna is perfectly balanced or unbalanced, thus always some CMC. If you have an antenna analyser it will make life a lot easier. The Windom antenna is an off-center fed dipole with an unbalanced coax feedline. ~ 4 dbi @ 37° for 15 meters. Emergency Amateur Radio Club of Hawaii (EARCHI) marketed a matchbox-kit for a 6-40 mtr multi-band end-fed antenna. For best results on 160 meters, the tuner must be low loss. an Odd Quarter Wave-Length of your target band. Most Online USA Orders Over $95 Ship FREE New Wattmeter Elements Ship FREE! should typically be under 2. 160 Meters: 1. Added a 17 foot counterpoise . 8:1 for 160-10m allowing onboard tuners to match the antenna on all bands. 97. 160M End-Fed. Picture Information. For best results raise the Bullet matching unit as high as . Thanks to Kevin Loughin (KB9RLW) for this interesting experiment in the 630 meter amateur radio band. If not, you can do it with a rig and SWR meter. back of the end wire, moving the insulator a couple of inches, 2nd re-'. 02 2268 –j1565 44 33 Angle of radiation remained identical 6 feet ends The L is used on 80 as an end-fed half-wave, a best-performing single wire antenna for both local and DX, with advantages over dipoles, inverted V's and simple verticals. 42 51 –j86 20 meter 8. They are not a half-wavelength long, meaning that, if you choose the length of the radiator wisely, the impedance at the end of the wire will not be as high as the impedance of a half 100W to antenna, Max wire current ~1. FS:Portable 30 & 20 meter end-fed antennas. tLvity high. Par End-Fed Shortwave Listener (EF-SWL) Antenna and FlexWeave Antenna Wire. CLICK or TAP HERE to read about the successful test and listen to the actual audio recording of the test. Here is how I managed to get pretty decent results with a homemade antenna. It is basically an end fed half wave dipole on 20m/40m and an end fed full wave dipole on 10m. NOTES:-1. £105. A better view of the shack end of the feedlines. Ground radials and an end fed antenna question. 99. The original Windom antenna from the late 1920s was an off-center fed resonant dipole with a single wire feedline of any length. The end fed offers many alternative options. In MMANA the antenna looks like this. vz-applng the excess wire back on . One of the reasons for this is that most designs are for QRP antennas and not made to handle more than 5 – 10 W of power. All you need to do is correctly feed the antenna for 160 meters, and you can get on 160 with a reasonable signal depending on how careful you are in setting things up. Changing bands is super-easy -- just change the tap on the wander-lead to . Here is my home HF antenna. Description. 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 5297 times. 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. " In reality, it's probably several thousand Ohms. A blog about Amateur Radio and Amateur Radio Antennas. There are plenty of end fed wire antennas commercially available for around $75, but you can build the core of this antenna for less than $10. In this regard, it is wise to use a the -43 rather than the -61 material, so that the required number of turns is much less. You are on air within 5 minutes! An additional advantage is that the antenna can easily be polarized vertically. An end fed Hertz is an end fed half wavelength antenna. But you don't use 50 Ohm coax to feed a several K antenna. Design Software. 8 to 2. 8, 3. 28dB. Heavy duty construction . 11. 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 Fail . 91 postage. In the 160 m- 80m - 20 meter band HWEF antenna for 1. Since the element is currently 28' 10" long, I need to add another 34' 6" feet to it. It is a minimalistic design and lightweight components are intended for the serious backpacker and outdoor adventurer. 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. Only 8 left in stock - order soon. Dipole Doublet – L. We are A Marconi is an end fed quarter wavelength antenna. You can even use a tuner to achieve a near perfect SWR on these bands, or an external . Will cover 160 - 10m with a tuner. An 80-10 end-fed half-wave antenna can be a very good performing part of an HF station. This stealthy antenna equals the performance of full-wave dipoles dedicated to a particular band. VHF-UHF Mobile Antennas. They are not a half-wavelength long, meaning that, if you choose the length of the radiator wisely, the impedance at the end of the wire will not be as high as the impedance of a half wavelength long wire. Portable UnUnTenna 40m-10m. Here is the pattern of the 160/80 meter antenna on 3. Buy End Fed Antenna and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items . Note that 60 meters is not included on the list. 160 meters band antenna category is a curation of 146 web resources on , 160m Mobile Aerial by M0VEY, 160m Kite Vertical Antenna, Vertical antenna for 160 . 00 - $155. Fast Setup and takedown. Uses non-resonant antenna (Recommended antenna wire length: 24-30 ft (60 ft max) and powdered iron toroid, efficient transmission line transformer 7 Stealthy end fed antenna for portable, emergency, permanent locations - 1. The Sloper. Since the Unun end of the wire is the max current (and max radiated energy) point, I plan to reverse the ends . With a wire hanging in the air, that impedance is "infinity. ½ wave antennas can be fed from the end (voltage feed) AD4IE end-fed as inverted L •The Inverted L is popular on 160 and 80 meters where vertical height is often lacking. I also found the link to Steve Dick’s (K1RF) “The End-Fed Half-Wave Antennas” guide to be the icing on the cake, answering ALL my lingering questions about End Fed antennas, right down to where I could purchase the 1 post stainless wire rope clips. $14. AS-OCF-5K: 6 lb. ARRL Antenna Book; Antenna Modeling for Beginners; HF Digital; Circuit Simulation; History Of QST; Arduino; Arduino2; ARRL Handbook 2020; Arduino3; End-Fed Half-Wave RW Antennastore WORLDS BEST 160 Meter Half Sloper End Fed Ham Radio Antenna. 00 shipping. MA160V 160-Meter Vertical Monopole Antenna. on 160, 80, 40, 20, 17, and 10 Meters. The 140 foot version (80 meters) in picture also resonates at about 2. A half wave vertical for 21MHz. Installation. The antenna is sported by a 22ft (6. Portable Multi-Band End Fed Antenna 40/30/20m. 186 ft / 16. Hand assembled in the US by Bruce Beckett, NU0R. 17, 15, 12, and 10 meter bands whether at a height of 10 feet or 50 feet. Pennant 5. Estimated Ship Date: Today. Again, start by fastening the tip of the wire to the pole, then as you telescope the individual pole segments upwards, wrap the wire (with feedpoint box) around the pole about 1 turn every meter (3'). On Air Test of the Chameleon CHA LEFS Lightweight End Fed Sloper antenna. Great deals on End Fed Antenna. •Not concerned . The antenna is directly fed with 75Ω RG11 cable. These will . 10 meter to 40 meter bands. Skip to the end of the images gallery . Skip to main content Simple Ham Radio Antennas A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. It also formed the basis of the antenna I finally decided to use. I received my ULTIMAX DXtreme 88' antenna on April 29, 2016 after Albert promptly answered some questions I had the same day I sent my email, before I made my purchase. As the “counterpoise” itself approaches a half wavelength, the impedance approaches 5000 ohms. (Enter "0" for a base loading coil. 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. 66) end support. 160 meter half sloper. s. Here are some photos of one of my 9:1 baluns. Length, Each. An antenna erected over poor ground (deep shale, granite or desert sand) may appear to be many feet higher over ground than it is. 108 155$108. The pole have a good ground connection to the earth, you need this for better performance. VHF-UHF Handheld Antennas. The store will not work correctly in the case when cookies are disabled. Review Summary For : Maple Leaf Studios End Fed Easy-Tenna 160-6 meters. The VE2DPE 160 Special! . My Account; My Wish List . The impedance at the end of the antenna will be quite high - typically 5,000 ohms or more. 270 feet overall plus an additional 25 feet of UV rope on each end included. 160m Top Band End Fed Antenna by G3YEU The first 6ft (1. It is a #18 gauge stranded copperweld with a . The PEF 160-10 contains a FT-240/61 trifilar wound, 9:1 . 37: HyEndFed 8 Band 200 Watt AL Plate $ 197. 5MHz) Continuous carrier: 50% approx CW: 25% approx SSB: Single toroid: 50W: 100W: 200W: 2 pcs stacked toroids: 200W: 400W: 800W: 3 . The first 6ft (1. All MFJ-1984 models come with 66 feet of wire and cover 40, 30, 20, 15, and 10 meters. 2:1 and in most cases will be under 1. Nevertheless, the EFHW antenna had in the past, been rather sparingly used by amateur radio operators due to various reasons. This is the feed impedance and SWR of an end fed 80 meter half wave with an ideal 49:1 transformer and good stable - End-Fed antennas have wild impedance swings. This antenna is used on 160 meters only and is coaxial cable fed. This purpose-built link-coupled, parallel matchbox is quite capable of coping with the high voltage and high current incurred on 160m when used with the short antenna shown above. The original design called for a 17 ft. An 84 ft long end-fed antenna wire, with a "counterpoise" wire of 1/5 the length of that antenna wire (i. 160m Vertical Antenna. 87-91 The EFHW Alpha Sr is an end fed half wave HF antenna, nicknamed the JPole antenna due to the 2 parallel elements, is only 60 feet in length. End Fed Half Wave EFH Antenna. Portable No Tune End Fed Half Wave Antenna 80-10m. End Fed Halfwave. 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. 15 m and 20m the swr is less than 1. Add to Cart; RW Antennastore WORLDS BEST 80 Meter Half Sloper End Fed Ham Radio Antenna 1. 2 out of 5 stars 79. 5 kW CCS / 10 kW PEP. The antenna can be seen as a dipole except that the feed point is placed at the end (or This resource is listed under Antennas/End-Fed. Small enough to fit in your glove box or your bug-out bag. . Usually any wire length that is non resonant on the band or bands desired will work with the 4:1 ratio. 160M Windom. about 8-10 loops of coax in a six-inch coil about a foot or two from the antenna and then use a single earth rod and four short radials. SOME COMMENTS FROM BUILDERS. A low launch angle and deep overhead null combine to pull in distant stations while rejecting local QRM. This is because End-Fed Antennas should be at least 1/4 λ on the lowest band you intend to use. W0CM 6. 160 m to 6 m - Should work with standard transceivers with a built in ATU. 12. You Two days after I posted this, my 160 meter inverted “L” antenna was taken out in a storm. BACKGROUND • Why? – Get DXCC on 160M • Windom 160 (265 ft) in use – OK on 160 (80+ countries), but too low • Mar 2012 QST Article by Scott – K4VWK . Be prepared and able to communicate in case of emergency with the largest selection at eBay. The extended G5RV and other flat tops are just dipoles with a different feed method. If you only have one support an end-fed antenna may suit you better. Though limited to 100w of power, this antenna system This illustration is for 80m, so double the dimensions shown above to re-scale the illustration for 160m. MSRP: 41. All antennas require some return path for the RF current to the antenna to get back to the transmitter. Cebik W4RNL (sk) •Fed with ladderline and an antenna tuner, this will work all HF bands from its ½ wave frequency on up. 10. The top wire is the antenna and you can see my first choke and the antenna cable feed. 72 MHz. More coax is good in this case because its more antenna to radiate. Nearly Unaffected by Rain, Unlike 450Ω or 300Ω Twinlead; Most Efficient Doublet Antenna; Covers all the ham bands; 100% USA Made! Less Expensive Than Purchasing . That makes the antenna a full-size halfwave on HybridDX Antenna for 160 – 6 Meters Bottom Line The HybridDX antenna is a 79-foot alternative to the typical 135-foot center-fed multiband dipole for operation on 160 through 6 meters. • Use NEC to model antenna and predict inductance required to resonate the the antenna – or: Use Vector Analyzer to measure feedpoint Z of an existing antenna that’s too short, export data to SimSmith and predict inductance • Coil winding formulas in ARRL Handbook are very accurate One 20 meter long (the right cable in the picture) and one 8 meter long (the down-left). premium commercial center-fed antennas: Loops, etc. FREE Shipping by Amazon. Marconi antennas or end-fed antenna systems located far from earth require This CMC occurs with any un-balanced antenna: End fed wire, vertical, mobile 6. The three wires that make up the end fed antenna are initially cut over size by 300mm, and cut to reduce the SWR. Using the W7FG Open Wire Fed True Ladder Line Multi-Band Dipole Is Easy! . 40 Meter Off Center Fed. All hardware is stainless and the SO-239 connector is silver/teflon. FS:Portable 20 &30 . Although it is simple to build and is a multiband antenna, it has several attributes that . Overall, the antenna seemed to perform the best on 40 – 10 . MyAnt EFHW-4010 Multi-band End Fed Wire Antenna - Radioworld UK. 00 MHz 300 wattsNew style resonant end fed antenna requires no counterpoi. 250 inch diameter copper wire is used to tune the 1. Multiband End-fed 80-10m antenna; Experiments with 160m antennas; EFHW matching unit; Trapped five band EFHW SOTA antenna; Portable magnetic loop antenna . In the summer of 2010, I decided to construct a 1/4 wave 80 meter vertical using 3" OD Aluminum Tubing. In October 2012 I changed my 160 meter transmitting antenna to an Inverted L with FCP (folded counter poise). Coax fed OCF ‘Windom’ antenna. 5:1. The narrow bandwidth of this antenna . 1: SWR across 90’ of RG8 (. Patterns of 43 foot Vertical Antenna on the major HF Bands. But the perfor-mance of an end-fed antenna is also very dependent on height above ground. The unique design characteristics of this 10-160 Meter EFHW HF JPole antenna enables coverage of major HF bands (10/12/15/17/20/40/80 Meters). End Fed Antenna Matcher. The above graphic depicts the overall layout of the loop antenna consisting of 558 ft. I did some research and remembered that awhile back I had received an antenna from a fellow ham that had been struck by lightning. Consumer Electronics; Radio Communication; Antennas. 91MHz Plots The “X” marks the position of the traps. 624 m long) which goes up some 25 feet (7-8 m), then over horizontally, at an average of 25 feet (7-8 m) above ground, to a tree at the far end of my property. Choose an antenna, an antenna bundle (Antenna + ATU), or create your own kit in your cart. 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. Low-Gloss finish and small size makes wire disappear into the background. 160 Inverted L Antenna. HF End Fed Antenna 3kW 160-6m with 9:1 UNUN dual 3 inch cores -107 feet long. A couple of months ago, I ran across a design rated at 100 W. Years of trouble free service. For a conventional antenna I would normally split this wire in half and place a feed point in the center. 160, 80 and 40 meter antennas on your vehicles are much shorter than ¼ wavelength long, thus have a very low feed impedance. SWL Antenna. HFJ-350M Toy Box Original Comet Portable 9 Band Telescopic HF Antenna with 160M Extension Coil. $199. The automatic antenna coupler is designed for use with end-fed unbalanced antennas such . Radiowavz EFH Half Wave End Fed Antenna 160 Meters. The half-sloper is fed at one end with a “ground system” or counter poise provided by either physical ground if fed at lower end of sloper. Matching is done by a parallel LC network. 80/160 instructions followHam Radio Pair of Antenna Traps 80/160m Low Swr. For example a 32 foot length is actually a half wave on 20m with an impedance of about 3500 ohms and Our Hy Power 160-meter off center fed antenna is made with the same material as our 80-meter off center fed antenna. Plus, a dipole for the 80-meter band would be 40 meters end-to-end, and that would be hard to fit across my long, narrow suburban lot. 4A I used a CM current meter I built (0. Stick to the above, and it should be a sure thing! Feeding a 21MHz half wave. An odd 7. Simply hang the far end from a tree limb–the coax is at the bottom. The antenna as fed, matches reasonably well into a 50 Ohm Coax Cable Feedline. This worked quite well . 6 Meter. Short Beverage or EWE 40-80 Meters: 1. by Gene Preston, K5GP . With the transmitter on "tune . $99. End-fed wire antennas are a different beast. 2019-03-20a After the successful deployment of the 20 meter end fed half wave antenna today I've decided to work on an extension for 40 meters. All our . MFJ-1778 MFJ Enterprises Original G5RV Wire Antenna 160-10 Meters, 102 Ft Long. The antenna can be employed on 80, 40, 20 and 10m with considerable, though acceptable levels of VSWR. Between watching unending Law and Order repeats and the XYL’s Lifetime movie sagas, compounded by a dead 40 meter band here at night, I became so totally bereft First, it is important to understand the difference between the end fed half wave and a random wire (or “long wire”) antenna: the random wire is just a piece of wire that is matched to 50 Ohm impedance using an antenna coupler, sometimes adding a 9:1 unun. October 2011 My 6 – 40 meter end fed arrived through the UK holiday mail and I departed from my norm of a sloper and mounted it vertically on a 10m fishing pole. •. radiator and a . The DX Vertical is our non-stealth OCF HF vertical dipole antenna. 1. Other 160-Meter Antennas Some amateurs obtain good perfor- mance with end-fed 1/2-X wire antennas. 160m End Fed Half Wave kite antenna. Small Coaxial Loop tuned for specific band 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. It utilizes a 9:1 UNUN transformer in order to bring the impedance of the antenna to more manageable values for your antenna tuner. Note that 17 and 12 Meters are not covered . A lot of radio amateurs have made similar antennas to this with larger . So do all antennas, but not at the design frequency - there, at the design frequency, the terminal impedance is quite predictable. Antenna Calculator. The SWR for the 20 meter EFHW antenna was < 1. If using an analyser connect it to the end of the coax and see where the antenna Related: 160 meter dipole 80 meter antenna antenna tuner 160 meter end fed antenna 160 meter loop antenna. 5 lb) vertical that can be user . Part Number: PEZ-EF-4020. To make use of the odd-quarter wavelength anti-reflection property of a mismatched . It was impossible to find a decent matching combination on 160 meters at all. The antenna will act like a "T" antenna worked against the station ground. Figure 1 - Basic 75 Meter Dipole. It was intended to be used on one frequency only. 80 Meterr Vertical Antenna. Here’s a picture of how I terminate my set up: Aside from the usual “sloper” configuration, the antenna also works very well as a vertical with a Jakite pole or similar fiberglass pole system. can work the 80-10 meter bands easily with the built in antenna tuner of most current day transceivers. The SWR was adjusted using the tapping point on the coil near the feeder. RW Antennastore model SL-160. Toroid FT-240-43 (3. Figure 13 — Sturdy 3⁄16-inch UV-resistant dacron/polyester rope supports the #18 AWG solid antenna wire. Today’s versions, based on the original Windom, include the common OCF and Carolina Windom. Jul 4, 2017 - End-Fed antenna for 160-80-40 meters band resource viwever available at dxzone. Today. Great for limited space areas .


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