160m Windom Antenna
The windom antennas for 160-10m and 80-10m can be extended to work on 30/15m by adding two simple wires. Ideally, this antenna should be at least 35 feet above ground, but mine is currently about 25 feet, and still performs OK. 5 turn per 25mm) Number of turns depends on the length of the antenna. Over the last few days, I've been fishing on the internet to try and get as much information as possible on alternative antennas, and can only see the Radio Works Carolina Windom 160 as a possible multiband. Double Windom Antenna 29 48. 22 Different Wire Antennas. It operates well locally on 40 and does a decent job of DX on 20. It was designed to cover 80, 40, 20 15, and 10 meters. 102 feet long, shorter than 80 Meter dipole. Get 160-6 Meters Coverage and 1500 Watt Operation with a single antenna! This MFJ-2990 is a 43-foot self-supporting vertical antenna that covers 160 through 6 Meters with the use of an antenna tuner. VSWR remains below 2:1 throughout the range of 160M to 10M. and which creates the low angle lobes. Super-Sloper Antenna 44 69. 00 Women's Quilted Windom-Mid Skechers M ~ Winter 8 Charcoal/Black NEW Boot Duck NEW Duck Boot Women's Winter 8 ~ Quilted Charcoal/Black Skechers Windom-Mid M. 51 - Short Dipole Antenna for 40m - 80m - 160m. 07 – Windom Antenna – Feed with coax cable. Just put it in a bag take it out with coax and radio, throw the rope over a limb and you're on the air fast. 374 - Acute Angle Inverted-Vee Antenna for 160m to 10m. The horizontal center-fed wire forms the antenna proper, which accounts for the radiation of transmitted energy and the reception of incoming energy. While it is usually hung from a pole or in a tree, it works when used in a "grasswire" mode. It needs no tuner on 40m, 20m and 10m. Ideally, this. Get 160-6 Meters Coverage and 1500 Watt Operation with a single antenna! This MFJ-2990 is a 43-foot self-supporting vertical antenna that covers 160 through 6 Meters with the use of an antenna tuner. All-Bands Antenna 32 53. The typical bandwidth is: 160M – 20kHz • 80M – 40 kHz • 40M – 300 kHz. 160M Is a Tough Band • Wavelength makes antennas more difficult –Quarter-wave vertical is 130 Ft –Half-wave dipole is 260 Ft, and it’s “low” at only 130 ft –Verticals need radials or a counterpoise, and they work best if they’re fairly large. Here's a vertical antenna for 80 and 160, fed with a single feed line that is simple, effective, and requires no ground system. Wound at 3. The offset percentages remain the same. In fact, 30m is problematic in general because the actual ham band is not a very close multiple of the others, so will often require more of a compromise. Antenna performance and 2:1 VSWR bandwidth is site dependent and varies with height above ground and surrounding objects. TRX Agronaout 2 from Ten-Tec 5W Ant Dipol for 80, 20, 15M, LW 31m for 160M, 3-el Yagi for 10M, Deltaloop for 40M Portable QTH Ostseebad. Don Toman, K2KQ [email protected] For a general purpose multi-banded small yard wire antenna the Inverted L is a good choice. 3 Louis Varney's G5RV - RSARS Tribute 1. ) Do not connect all together in the center!. Most of the current transceivers with a built-in automatic tuner will tune a CAROLINA WINDOM® on all bands. The larger the wire, the wider the bandwidth. It's a compact antenna, (dipole was around 112′, this Windom is 66′) and promises to not need to be tuned across the primary HF frequencies from 7-30Mhz. The length of the wires is 9,5m for the longer part and 4,8m for the shorter part, incl. It needs no tuner on 40m, 20m and 10m. and has a wind load of just 2 square feet. 160m New antenna tests this weekend This weekend I will be QRV from my 2nd QTH on 160m using the modified 9 band Fritzel FD-4 Windom antenna. Great Quality Affortable End Fed, Delta Loop & Windom (OCFD) Multiband Antennas. The balun is located at one third of the antenna length. Important Note: As with all models of the G5RV antenna, the Optimized version also requires a minimum of 70 feet of 50-52 ohm coax to complete the matching network. Other expensive ocf antennas have you parts hunting accessories before you can take it out in the field. However, someone might have taken. They are a single wire fed antenna worked against a good ground system. It will provide years and years of great service and great contacts. A six-band, HF Windom antenna April, 1997 This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom. Auto Tuned 160m Antenna Major Tasks and Project Flow. It’s also ideal for those who want a high performance antenna with world class DX coverage. So, I decided to give it a try after all these years. It operates well locally on 40 and does a decent job of DX on 20. windom 10-160. Wound at 3. TRX Agronaout 2 from Ten-Tec 5W Ant Dipol for 80, 20, 15M, LW 31m for 160M, 3-el Yagi for 10M, Deltaloop for 40M Portable QTH Ostseebad. Discover (and save!) your own Pins on Pinterest. Generally I've been using my 80m Windom for most contacts because it is resonant on 7 bands and I don't have to tune it. Quickly switch bands and eliminate a tuner as one more thing to adjust. 8-Band OCF Antennas. NEW! Balun Designs Baluns now available for $85 each. Off-Center-Fed Dipole, OCFD, Windom, Whereas a Dipole is a half-wavelength long radiator, fed in the Center of two equal length legs, the Off-Center-Fed Dipole (which I prefer to call a WINDOM) is a Dipole whose feedpoint is at a point removed from the center of the antenna. We do not recommend installing this antenna as a Vertical due to verticals being inherently prone to high noise (RFI) and unpredictable radiation patterns due to proximity of coax, which also allows for common mode feedback to increase. The Near Vertical Incident Skywave (NVIS) antenna is one that provides the majority of its radiation at an extremely high angle. Auto Tuned 160m Antenna Major Tasks and Project Flow. Linear amplifiers will need a high power, wide range antenna tuner. 160 Meter Balloon Antenna. The horizontal center-fed wire forms the antenna proper, which accounts for the radiation of transmitted energy and the reception of incoming energy. TWO pieces of 42 meters of the special antenna insulated copper wires. The Windom (or OCF Dipole if you prefer), offers a true multi-band, experience without much use of a tuner. The balun is located at one third of the antenna length. Gain as high as 10dBd is a. Go for DX on the low bands. Thanks to a small hill beside the house I get the right height and distance to erect the aerial. 5:1 bandwidth of the series matched antenna at 80 feet is 175 kilohertz, or a mere 35% of the band. HFedz Antennas. Collinear Trap Antenna 30 50. Vertical Dipole Portable Base Mobile Alpha Magnetic Loop antennas. 270 feet (90+180) long. I build the HFedz Antennas. Therefore, we opted to install the wire antenna (265-ft long Carolina Windom) under the cover of darkness just as the sun went down on Friday evening, and we would take it down just before local sunrise (emphasis on stealth and camouflage). 3 4-band 20-17-15-10m COLA -G8ODE iss 1. Multi band and I can do 160-6M with no tuner. It needs no tuner on 40m, 20m and 10m. It Is Made To Be Mounted Any Way You Like Horizontal, Vertical, Slope, Inverted V, or L Shape. I designed and constructed the antenna on November 11, 2007. 2% for the longest side after determining the half wave length at the lowest operating frequency…. Dipole Antenna Calculator. WINDOM IN THE GRASS. I designed and constructed the antenna on November 11, 2007. In the evening when most of us have time to relax and enjoy a little time on the radio, the higher frequency bands are either dead or very crowded. Windom, W8GZ who first published details of his antenna design in 1929. The CW-160 ideal all-band antenna that gives DX performance on the low frequency bands. You also need to consider the power ratings of the feed line and antenna tuner. in the early 1940's for use by the U. (• Windom(for(10(– 40(meters(shown. A six-band, HF Windom antenna April, 1997 This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom. the loops for the end isolators. Both antennas have ceramic egg insulators which connect the ends to Dacron rope. 4MHz and fourth harmonic of 7. VERT™ (Vertically Enhanced Radiation Technique) is a radiating feed line technique that produces a controlled, low angle vertical radiation pattern. 50 - Collinear Trap Antenna. Order 7-Band 5,000 Watt OCF Dipole Antenna: $707 Special Price: $538 (5,000 watt models are special order only and are made on-demand, so will always take a couple weeks to ship. Below is my dilemma. wire verticals on 40/80/160m. They may not all be totally new designs but, I hope that they are an improvement on the originals. 5 TPI to make tapping easier and to keep the losses down, 11 turns were sufficient. Ideally, this antenna should be at least 35 feet above ground, but mine is currently about 25 feet, and still performs OK. 4MHz and fourth harmonic of 7. It is an off centre fed dipole, with 10 feet of vertical radiator. Simple Quarter Wave Ground Plane. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands only available with an antenna. Now, how was a Windom antenna developed? It began with a center-fed, half-wave dipole. The original windom of the 1920's had a single wire (vertical) feedline. The larger the wire, the wider the bandwidth. Windom 160 - 10m Windom 80 - 10m Length 78m 42m Weight 2. 2M Square Dipole Construction. The RadioWavz DX (OCF) Windom is a off center fed (OCF) dipole antenna that exhibits outstanding performance on all bands. ozaukeeradioclub. It was often called "Amerikanka" in the Soviet Union, and was mentioned by E. Loren lived in Reynoldsburg, Ohio. Engineered for maximum performance with a 14 Gage wire to our coaxial mono band double bazookas of RG11. The 160M antenna presents a problem on 160M where the feedpoint impedance may be as low as 15 ohms. While it is usually hung from a pole or in a tree, it works when used in a "grasswire" mode. The Par End-Fedz ® are a full length half wave dipoles, but with an important difference. The higher the antenna, the lower the takeoff angle to the horizon, which increases the effective range of the antenna. 76 Curtain Zepp Antenna for 40m, 30m, 20m. It's closely related to a Windom. Chameleon Antenna has been a pioneer at rethinking and redesigning portable antenna systems since almost a decade! Pushing the limits of design and manufacturing with cutting edge technology, Chameleon Antenna are known to design, manufacture and distribute products worldwide that are versatile, dependable and built to last!. Helical antennas are single-frequency, narrow-bandwidth devices. The skyloop works with a 4/1 balun, however, it REALLY shines with a 2. Windom Antenna. So basically that means if the ground system sucks the antenna will, too. If you prefer to use Coax, this is an alternative to using Ladder line and a tuner. Go for DX on the low bands. Add to cart Last items in stock. It is an off centre fed dipole, with 10 feet of vertical radiator. Includes balun 1:6, max, power load 200 or 1000 Watt SSB/CW, connector PL. W7ZZ and N6RY, c. 160m #2 Front View. antenna manufacturers, or compared to resistor loaded antennas, the Carolina Windom is a regular paragon of virtue. The Off Centre Fed Dipole (OCFD) has been used for many years, the most famous being the Carolina Windom. Over the last few days, I've been fishing on the internet to try and get as much information as possible on alternative antennas, and can only see the Radio Works Carolina Windom 160 as a possible multiband. The antenna was described in the September 1929 QST article written by Loren G. 5:1 on 6, 10, 20, 40 & 80m bands and can be operated without an antenna tuner. Find many great new & used options and get the best deals for HFedz End Fed 10m-160m HF antenna (200W) Ham Radio Antenna at the best online prices at eBay! Free shipping for many products!. See my Shack page for links to my Windom Fan Dipole early and recent setups. for the 160 Meter Band. With a total distance of 82m, the longest leg is 57m, this is a monster. The Center-Loaded Off-Center-Fed Dipole (CL-OCFD) was invented and first described by yours truly, Serge Y. 5/1 Talented balun. Those of you that follow my little antenna projects know that I am a great fan of the work performed by Dr. Great Quality Affortable End Fed, Delta Loop & Windom (OCFD) Multiband Antennas. 160m Top Band End Fed Antenna -G3YEU Coil Details:- 5" (127mm) diameter using 16 SWG bare copper wire. 00 S & H: $ 0. Este Pin foi descoberto por francisco melo. Double Windom Antenna 29 48. I run mine into a Kenwood hybrid and that rig has not blinked at any of the bands. Overall length is 123 ft. I'm using it to demonstrate the resonance of the Windom on different bands. Anyway, after calculating the dimensions, I put up this OCF dipole using insulated #14 wire I got from the Wireman at the Orlando Hamcation. Only 2 left in stock - order soon. Furthermore, amateur radio antennas in a subdivision are typically frowned upon. This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. I modified this antenna originally used as Inverted-V type of 80m band Dipole a little. Tips for Buying 160-Meter Antennas on eBay. Here the match at 3. The Near Vertical Incident Skywave (NVIS) antenna is one that provides the majority of its radiation at an extremely high angle. RSARS Antennas and Technical Document Links ISS RX - An interesting document about the ISS Space Station by Bob/G4PVB QRP Z-Match 40-10m iss 1. Includes balun 1:6, max, power load 200 or 1000 Watt SSB/CW, connector PL. But through some email exchanges with another ham in Illinois who had recently put up a 160m antenna we decided to try a scheduled QSO on the top band. THE OCF FD4 (FD3) WINDOM ANTENNA 19 may 2011. I do not understand why people study for an exam and learn the formulas for antenna lengths, obtain SWR bridges or antenna analyzers, and still buy pre cut commecial dipoles. My noise antenna is a 40 to 10 meter multi-element wire-dipole located in the West end of the attic of my home. windom 10-160. It's a dipole fed off center with a 4:1 current balun at the offset feedpoint. Just made my first 2 contacts on 160m. The windom antennas for 160-10m can be extended to work on 30/15m by adding. RadioWavz Dipole antennas are the simplest practical antennas from a theoretical point of view; current amplitude on such an antenna decreases uniformly from the maximum at the center to zero at the ends. A tuner may be required for 160. The RadioWavz DX (OCF) Windom is a off center fed (OCF) dipole antenna that exhibits outstanding performance on multiple bands typically with out a tuner. 5 turn per 25mm) Number of turns depends on the length of the antenna. I had never been able to tune 160 before with my Windom but I recently moved it and decided to give it a try. The RadioWavz DX (OCF) Windom is ideal for those of you who do not use a tower and beam. 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. I was using MV (micro vert) antenna which is only 3. ) Do not connect all together in the center!. Now, how was a Windom antenna developed? It began with a center-fed, half-wave dipole. But now the feed impedance at 10. Or, you can hang the antenna from a 10 foot piece of rope tied to the tower and use the legs of the antenna to pull the balun away from the tower. Stan Gibilisco 24,342 views. Includes balun 1:6, connector SO-239. VSWR remains below 2:1 throughout the range of 160M to 10M. The springs running to the left and right in the picture apply tension to the insulators that are attached to the North and South legs of the dipole antenna. 160m New antenna tests this weekend This weekend I will be QRV from my 2nd QTH on 160m using the modified 9 band Fritzel FD-4 Windom antenna. It therefore made sense to have an OCF antenna. Includes balun 1:6, max, power load 200 or 1000 Watt SSB/CW, connector PL. 3m (70ft) or 50m (166ft) (if using an internal ATU). Aug 30, 2016- Great Quality End Fed, FW Delta Loops and Windom Multiband HF Ham Radio Antennas. The 160M antenna presents a problem on 160M where the feedpoint impedance may be as low as 15 ohms. WINDOM OCF Antenna 10-160m 1Kw 256ft. The feed is similar to a long-wire antenna, except the horizontal wire is fed with a few percent offset from the center. I found the gain was not much better than that obtained with a 1/4 wave vertical, especially on 28. Radioworks Antennas, We sell the radioworks range of antennas designed and made in the USA, Great quality products with years of experience building ham radio products, If you're looking for a quality Wire antenna for ham radio transmitting look no further than Radioworks,. In the total length of this antenna is 41m, height is about 11m, and diameter of element is 2mm. W7ZZ and N6RY, c. At swap meets, buy up older ceramic insulators whenever you can. 5 kW automatic tuner. See more ideas about Ham radio antenna, Atlantic bluefin tuna and Light house. As the "counterpoise" itself approaches a half wavelength, the impedance approaches 5000 ohms. Swallow-Tail Antenna 5 de 45 ANTENNAS 5. 95 Special Order : No Image Available: PLDX160 : RADIO WAVZ PLDX160: PRO LINE 160M DX(OCF) WINDOM 266FT $172. Important Note: As with all models of the G5RV antenna, the Optimized version also requires a minimum of 70 feet of 50-52 ohm coax to complete the matching network. The True or Conventional Windom antenna, shown below, is fed with a single-wire line, and fed as an unbalanced system against a reasonable RF ground or counterpoise. The Carolina Windom CW-160 Special Antenna works like an upside down vertical with near omnidirectional radiation pattern without the annoying QRN pickup of a standard 1/4 wave vertical!. The antenna is named after its inventor, Loren G. 5 turn per 25mm) Number of turns depends on the length of the antenna. The RadioWavz DX (OCF) Windom is ideal for those of you who do not use a tower and beam. Both antennas have ceramic egg insulators which connect the ends to Dacron rope. 57 - Five-Bands No-Tuner Antenna. I have elsewhere described a windom antenna. 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. 95 Special Order : No Image Available: PLDX160 : RADIO WAVZ PLDX160: PRO LINE 160M DX(OCF) WINDOM 266FT $172. Government as a radar an-in the 1950's. Therefore, we opted to install the wire antenna (265-ft long Carolina Windom) under the cover of darkness just as the sun went down on Friday evening, and we would take it down just before local sunrise (emphasis on stealth and camouflage). Have not had any contacts on 160m but the signals are certainly much stronger than on my "windom like" antenna. Expect to try many different noise antennas before you find one that works for your installation. 0 STUDY - OPEN LOOP DIPOLE ANTENNA -G8ODE Ver 1a Fox-Delta SWR Analyser - Android version iss 1. Below is my dilemma. Just lay it on the ground. windom 10-160. It's not a good antenna. I have even used it on 160m, but it is very inefficient there. I have heard for many years of the great challenge of putting up a DX antenna for 160 then actually getting it to work. Current type 4:1 (200:50 Ohms) BALUN is another product designed for OCF antennas (Off Center Fed) also known as Windom antenna. 5, 7, and 10. When I travel, I take one of these made of #22 insulated hookup wire. Nothing else needed with this purchase. Having a 50m fibreglass tape measure is essential when building HF antennas. Wire Antennas that Work. 50-Ω-Impedance, fed with a 50-Ω-coax-choke (look for the pictures). RSARS Antennas and Technical Document Links ISS RX - An interesting document about the ISS Space Station by Bob/G4PVB QRP Z-Match 40-10m iss 1. Great Quality Affortable End Fed, Delta Loop & Windom (OCFD) Multiband Antennas. It needs no tuner on 40m, 20m and 10m. 160-Meter Dipole Height N0GW - Gary Wescom - 1 Nov 2006 During the current lull in solar activity, operation on the 160 meter ham band has become more popular. This is real BAD news for my 160m activities. The offset percentages remain the same. 0 STUDY - OPEN LOOP DIPOLE ANTENNA -G8ODE Ver 1a Fox-Delta SWR Analyser - Android version iss 1. An antenna made this long will completely fail with the 160m and 60m bands, and will have some difficulty on 30m. We do not recommend installing this antenna as a Vertical due to verticals being inherently prone to high noise (RFI) and unpredictable radiation patterns due to proximity of coax, which also allows for common mode feedback to increase. for the 160 Meter Band. 40m - 80m - 160m Short Dipole Antenna. 8 KiB: 2016-Jul-20 22:32: 63-Wire-Beam_Antenna_for_80m. 95 Special Order : No Image Available: PLDX160 : RADIO WAVZ PLDX160: PRO LINE 160M DX(OCF) WINDOM 266FT $172. It Will Handle The Legal Limit, 1500 Watts Of Power. Windom, W8GZ, titled "Notes on Ethereal Adornments. 4 KiB: 2016-Jul-20 22:32: 64-Dual-Band_Sloper_Antenna. A popular misconception about vertical antennas for the low bands is that they must have elaborate ground systems. Since this is a proprietary antenna, I doubt you will find published information. I make the antennas using the best materials around while I maintain affordable prices 10m-160m @200W PEP end fed Windom Antennas for. I have heard for many years of the great challenge of putting up a DX antenna for 160 then actually getting it to work. Great Quality Affortable End Fed, Delta Loop & Windom (OCFD) Multiband Antennas. Here is my home HF antenna. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing. Multi band and I can do 160-6M with no tuner. the loops for the end isolators. Přesto jsem studiem různých materiálů, rozhovory s radioamatéry a pokusy s touto anténou dospěl k její zajímavé modifikaci, která má dobré vlastnosti v pásmech 160 a 80 m a v terénních podmínkách podobných níže popsanému QTH může být k užitku i. Military AS-2259/GR There are a number of different NVIS antenna plans on the internet that can be adopted to amateur radio use. I had never been able to tune 160 before with my Windom but I recently moved it and decided to give it a try. HFedz Antennas. The balun is located at one third of the antenna length. 3′ at the center of the antenna. Auto Tuned 160m Antenna Major Tasks and Project Flow. The typical bandwidth is: 160M – 20kHz • 80M – 40 kHz • 40M – 300 kHz. I wouldn't be embarrassed to admit to using one. 95 Special Order : EFH160 : RADIO WAVZ EFH160: 160M END FED HALF WAVE ANTENNA $151. It is an off centre fed dipole, with 10 feet of vertical radiator. The OCFD has a very low SWR on 40 meters. Short Dipole Antenna for 40m - 80m - 160m 31 51. I should have used at least 14 AWG. 8 KiB: 2016-Jul-20 22:32: 63-Wire-Beam_Antenna_for_80m. The antenna also uses an RF choke 11 or 22 ft. The 160 meter inverted-L antenna and elevated radials are connected to the PTFE spark gap insulator (below). G5RV Multi-Band Antenna The G5RV antenna, with its special feeder arrangement, is a multiband centre-fed antenna capable of very efficient operation on all hf bands from 3. the antenna comparison being reported was between a commercial chelcom 136ft multi band windom designed for 80m to 10m and a home brew 260ft full size windom designed for 160m to 10m by g0vvn g3kau and g3gro. Wire Antennas that Work. In this case, 450-ohm line would be even better, because the SWR only varies from about 9:1 at 50 ohms to 7. Evolving from a simple end-fed Marconi for 80m, the idea was to use the opposing. antenna manufacturers, or compared to resistor loaded antennas, the Carolina Windom is a regular paragon of virtue. I have heard for many years of the great challenge of putting up a DX antenna for 160 then actually getting it to work. Great Quality Affortable End Fed, Delta Loop & Windom (OCFD) Multiband Antennas. This had 4 x 2 inch coils in each corner of the loop with 30 turns of 1mm wire and I stretched the loop all around the garden and even inside the attic to make the loop as big as I could. 80m,40m & 20m this antenna works real good. However, it is up only about 4m height from a metallic roof. 8MHz) therefore also resonant on the second harmonic of 3. 67-Half-Sloper_Antenna_for_160m. net [this is the web version of the article that appeared in the November 2006 issue of CQ] Operating on 160 meters has always been a challenge. I do not understand why people study for an exam and learn the formulas for antenna lengths, obtain SWR bridges or antenna analyzers, and still buy pre cut commecial dipoles. If by "Windom" you mean "Carolina Windom", I have some experience. 2008, fun antenna project. 1/4 wave inverted L antenna as well as a reflector / ground reference for the 75/60/40 meter NVIS antenna that is mounted directly above the metal ditch (see the NVIS page for more details about this antenna). To support an antenna, I have no tower, and only two trees that aren’t too close to a house. 48 - Double Windom Antenna. Ideally, this. Our retirement home is on 8 acres, 500 x 1000 feet so I had plenty of room to put up a full length 160 Meter antenna. Results with Model #1. They are not 'miracle' antennas by any means and in fact have a few characteristics that are aggravating. Have not had any contacts on 160m but the signals are certainly much stronger than on my "windom like" antenna. Wound at 3. The horizontal center-fed wire forms the antenna proper, which accounts for the radiation of transmitted energy and the reception of incoming energy. 919 likes · 19 talking about this. 5 turn per 25mm) Number of turns depends on the length of the antenna. Can also be used as an inverted V or a sloped. I live on a small lot in a dense, inner suburb of Boston and Cambridge. 70cm Ruslan Yagi. In this case, 450-ohm line would be even better, because the SWR only varies from about 9:1 at 50 ohms to 7. 66 ft base loaded wire end fed against ground radials. The length of the wires is 9,5m for the longer part and 4,8m for the shorter part, incl. But now the feed impedance at 10. The WARC bands of 30, 17, 15, and 12 meters by using an antenna tuner. Vertical Dipole Portable Base Mobile Alpha Magnetic Loop antennas. 3m (70ft) or 50m (166ft) (if using an internal ATU). Wire antennas for Ham Radio. However, someone might have taken. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands only available with an antenna. The RadioWavz DX (OCF) Windom is a off center fed (OCF) dipole antenna that exhibits outstanding performance on multiple bands typically with out a tuner. Windom - 160M Carolina 10M Antenna Dipole Dipole Antenna Windom 10M - Carolina 160M Carolina Windom 160M - 10M Dipole Antenna Carolina Windom 160M $169. My noise antenna is a 40 to 10 meter multi-element wire-dipole located in the West end of the attic of my home. Windom Antennas. I homebrewed a Helical for 160m & have great results with this in 60' of garden space. But now the feed impedance at 10. The W0BTU antenna covers more bands than either the G5RV or the ZS6BKW. It's closely related to a Windom. I should have used at least 14 AWG. a mast, PVC or fiberglass is preferred. If by "Windom" you mean "Carolina Windom", I have some experience. 160 Meter Balloon Antenna. The Windom (or OCF Dipole if you prefer), offers a true multi-band, experience without much use of a tuner. The two bare wires from each half of the antenna are attached (soldered), one at a time to each side of the 2 conductor twinlead, ladder line, etc. In the evening when most of us have time to relax and enjoy a little time on the radio, the higher frequency bands are either dead or very crowded. Center Fed-Zepp Antenna for 80m - 40m 31 52. I operate QRP fairly often with decent results. Linear Loaded Sloper Antenna for 160m. Given that say 160M is not super efficient but it is enough to make contacts. We do not recommend installing this antenna as a Vertical due to verticals being inherently prone to high noise (RFI) and unpredictable radiation patterns due to proximity of coax, which also allows for common mode feedback to increase. The WARC bands of 30, 17, 15, and 12 meters by using an antenna tuner. All of our products are made of top quality materials, and constructed to last in harsh environments. By serendipity, it also covers the 17 and 2 meter bands. The ends of both antennas are clear of any tree branches. I personally use the MFJ-998 1. OCF Antennas 10-160m 1Kw 256ft. It will provide years and years of great service and great contacts. VE1ZAC March 29, 2012. I designed and constructed the antenna on November 11, 2007. The Windom (or OCF Dipole if you prefer), offers a true multi-band, experience without much use of a tuner. In the graph below I have plotted what MININEC predicts for the impedance of an end fed half wave antenna versus the "counterpoise" length. Another Windom Balun. Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to operate. Přesto jsem studiem různých materiálů, rozhovory s radioamatéry a pokusy s touto anténou dospěl k její zajímavé modifikaci, která má dobré vlastnosti v pásmech 160 a 80 m a v terénních podmínkách podobných níže popsanému QTH může být k užitku i. I operate QRP fairly often with decent results. The horizontal center-fed wire forms the antenna proper, which accounts for the radiation of transmitted energy and the reception of incoming energy.