It is an off centre fed dipole, with 10 feet of vertical radiator. OCF WINDOM DIPOLE ANTENNA 7 Band 3KW SSB - CHF 142. Each balun and antenna is hand crafted, built right. 6-Band Windom antenna Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio bands New Carolina windom antenna PDF file by QRP Expressions by By N. Evgeniy Slodkevich, UA3AHM The VS1AA antenna made by an American named Windom (1936) had been the ancestor of City Windom. Homemade Carolina Windom antenna - M0UKD - Amateur Radio Blog. Special Order. If you wanted to put the 6m on you have to remove the 30m ore 15 m band. OCF, Windom, FD4, and Carolina Windom. Although it is commonly called a Windom it is more properly described as Off-Center-Feed dipole. In the dual graphs the light line from the RigExpert scans are from the Shack end of the feed line to the balun. It needs no tuner on 40m, 20m and 10m. Between the antenna and the line isolator was 25 feet - not 10 feet. Windom UA6CA for 80-, 40-, 20- and 10- meter Bands. Joe was my neighbor and one of the VEs when I took and passed my General. 19 may 2011. You can't buy so much added performance for so little money anywhere else! The CAROLINA WINDOM® was the first antenna to take advantage of 'VERT™' (Vertically Enhanced Radiation Technique). Antenna Windom Antenna 80OCF1,5 Windom 80 ideale per le stagioni fisse e portatili. I don't know who first tried this method but it was named for General Loren G. It is a half-wave long on the lowest frequency. This antenna is unlike most compact antennas with elements running parallel to one another and in close proximity making the elements are tightly coupled, while the completed antenna uses less real estate, there is a great deal of interaction between adjacent elements. Buy Radiowavz DX80PL ProLine Multi-Band 80-10M OCF Windom Dipole Antenna 136ft with fast shipping and top-rated customer service. 95 RG8X Coax with PL259 Connectors Installed Available in Multiple Lengths. Purists would not call this a Windom antenna anymore because of the absence of the single-wire feedline. The original OCF Windom built by K5IJB used 12% offset and 68-foot coax feedline with a 4:1 balun. The center connection is an old Carolina Windom 4:1 current balun fed with RG-8X. The length of any wire antenna will vary due to the used wire thickness and the V-factor of the wire. The connections to the balun are soldered and crimped. An OCF dipole produces a radiation pattern very similar to that of a center-fed dipole on its fundamental frequency, and a very nice pattern with lots of gain on its second harmonic frequency. It was designed to cover 80, 40, 20 15, and 10 meters. 2% for the longest horizontal element. The 7-Band antenna is OCF (off-center-fed), with a 46 foot ( 14. Free shipping Free shipping Free shipping. NONESENSE! The classical feedpoint of the windom will give you the best SWR curves for a few of the bands, but if you are willing to accept a slightly higher SWR, it is possible to cover additional bands. 136 feet (45. The big advantage of this design is that you can make an antenna that does not require an antenna tuner by utilizing the constant impedance of the happy convergence that happens at 120 degrees. Think of the "Carolina" windom antenna (the modern version of the windom) as an "upside down vertical antenna", hanging down from its counterpoise strung (more or less horizontally) some 10 meters (or more) above ground. Este potrivit pentru benzile întinse armonios (40/20/10 / 6m) și oferă o lățime de bandă puțin mai mare decât un dipol cu SWR bun. 160, 80, 40, 20 y 10m (1,8, 3,5~3,7, 7, 14, 28 MHz. It's also ideal for those who want a high performance antenna with world class DX coverage 80, 40, 20, and 10 meters. The normal Windom is described as having a 1/3 length leg, and a 2/3 length leg. Dual cores, total of two (2) 2. 131 sold 131 sold. I may be wrong about this, but I think an OCF Dipole is considered a balanced antenna. It is an off centre fed dipole, with 10 feet of vertical radiator. This item OCF 8 Bands 160-6 HF Windom Antenna Flex-Weave Radiowavz DX80PL PROline Multi Band (80/40/20/10M) Off Center Fed Dipole Antenna 1500W SSB 800W CW Super Antenna MP1C All Band HF VHF Ham Radio Portable MP1. This antenna is an off center dipole that was. Resonant ½ wave dipoles when center fed will repeata resonant and resistive impedance at odd multiples of the fundamental. It's also ideal for those who want a high performance antenna with world class DX coverage 80, 40, 20, and 10 meters. IE: coax to balun to ladder line to antennaAdd tuner loss for all band useWhat a micky mouse mess:( I compared coax fed. Multiband Asymmetrical Dipole Antennas. 00 Folded Terminated Dipole (FTD) $318. From an electrical standpoint the best way is to hang the center at the apex. Although thousands of hams use and love these multi-band antennas, some people, including a few well-known antenna experts, view the OCF as a common mode current (CMC) generator or even an outdoor dummy load. Ham Radio Antenna - Windom 40 Antenna By Chameleon Antenna. I am a fan of the OCF dipole, but not of the Windom, which is a completely different type of antenna. (• Windom(for(10(– 40(meters(shown. I recently purchased a Carolina Windom 80 antenna and, after it was erected, immediately experienced some puzzling problems, as it would not take power from the transmitter, confirmed by high and erratic SWR measurements using a hand-held meter. An OCF dipole produces a radiation pattern very similar to that of a center-fed dipole on its fundamental frequency, and a very nice pattern with lots of gain on its second harmonic frequency. Alpha Delta is now selling an almost exact duplicate of the original Fritzel antenna. Add to Cart. Between the antenna and the line isolator was 25 feet - not 10 feet. THE OCF FD4 (FD3) WINDOM ANTENNA. The big difference is in the balun that you use to feed the antenna. 135 feet (45+90) long. Specifications. Unlike Terminated Folded Dipoles and End Fed Inverted V antennas. But with a twist. Maybe I will get the new antenna put up soon. Everytime has built in low height and with 4:1 balun. 65 Ft, Details about MMA Halb Finger Boxen Kampf Handschuhe Mitts für Sparring Stanzen Training, Bicycle lighting reflector LED Light Valve Caps-Energy-Saving, Details about Waterproof running Belt Waist pack for. 7-Band OCF Antennas Our 7-Band antennas cover 80, 40, 20, 17, 12, 10, and 6 meters, with no tuner required! Wire antennas are a great simple way to work 40M and 80M rather than a noisy vertical antenna that requires horizontal radials. WINDOM ANTENNA. The M0CVO HW-20HP. Check out this video on the Windom 40 Antenna from Chameleon Antenna. Pada awalnya Windom Antenna didesain dengan menggunakan twinlead sebagai saluran transmisinya, sebab saat itu untuk. Purists would not call this a Windom antenna anymore because of the absence of the single-wire feedline. It's also ideal for those who want a high performance antenna with world class DX coverage 80, 40, 30, 17, and 10 meters. The simple simple design includes two BFX89, one potentiometer and a variable air condenser, plus a handful of resistors and capacitors. Flat Panel Antenna Portable Manual Termi. It is 66' overall length. 150W MOSFET linear amplifier for 80m 1996. In the dual graphs the light line from the RigExpert scans are from the Shack end of the feed line to the balun. 160, 80, 40, 20 y 10m (1,8, 3,5~3,7, 7, 14, 28 MHz. After its initial publication on the Internet in 2007, the CL-OCFD was subsequently described in the following publications: Ed Spingola, VA3TPV. Homemade Carolina Windom antenna - M0UKD - Amateur Radio Blog. The antenna is actually a 3-band CL-OCFD antenna (160, 80 & 75 m) where the center loading moves the natural third harmonic to the lower end of the 80 m band, below the 75 m second harmonic. The length of any wire antenna will vary due to the used wire thickness and the V-factor of the wire. So I'm no longer using this attic antenna for 80m but it's working great for 40m and above. ) The EAntenna 160OCF3 Windom 160 antenna is an ideal antenna for portable or fixed, with exceptional performance characteristics in all bands mentioned, even on other bands with coupler. OCF-4010E-3K OCF antenna (Windom) The OCF dipole wire antenna also known as Windom antenna fed at 19% from one end. The RadioWavz DX (OCF) Windom is ideal for those of you who do not use a tower and beam. Operation on 12,15,17,30,60,80m will be tuner dependent. Quick service. I settled on the “New” Carolina Windom design by K4IWL. W1FB's Antenna Notebook, 1987, pp. Used by DX contesters all over the world. Good grounds certainly make a difference. Clothing Sets. Evgeniy Slodkevich, UA3AHM The VS1AA antenna made by an American named Windom (1936) had been the ancestor of City Windom. Update 30-03-2016: Since I wrote this article I updated my outside Windom to an 80m OCF Dipole. Item discovered at ebay. On 40-20-17-15-12-10 meter models we use a resonance compensator to pick up the 15 meter band not present on many competing OCF antenna products. Homemade Carolina Windom antenna. Buckmaster OCF Dipole Antennas Buckmaster's Best Coaxial Cables Antenna Support Rope Harken Stainless Steel Pulleys Stringliner Reel with 270 feet of Twisted Nylon Line Antenna Wire Screw-on Cable/Wire Clamps Line-Grips RF Chokes CQ Magazine Archives World Prefix, WAS, and Great Circle Maps Custom Great Circle Maps HamCall Mousepads Custom Name. It needs no tuner on 40m, 20m and 10m. 00 Folded Terminated Dipole (FTD) $318. Toggle Calendar. Krenkel, as the principal antenna to operate with soviet North Pole station SP-1. 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. 5 out of 5 stars. Both the HW-40 and the HW-20 are varients of this albeit at a much. The one thing that might help you is a 1:1 current choke below the feed point 4:1 balun. OCF-8010E-3K OCF antenna (Windom)OCF/Windom antenna 133ft longCovers 80/40/30/20/15/12/10m (6m too) Power 3kW ICAS This is OCF antenna also known as Windom antenna fed at 19% of one end. Alpha Delta is now selling an almost exact duplicate of the original Fritzel antenna. Cara kerja antenna & IDE penemuan windom antenna. The New Carolina Windom is essentially an off-center-fed (OCF) dipole. OCF WINDOM DIPOLE ANTENNA 7 Band 3KW SSB - CHF 142. It surprises some people to learn that, though cell phones offer inexpensive, instantaneous communication worldwide, there are still millions of active ham radio operators around the world. I HAVE NO WAT TO TEST IT SO 224600015340. Another unique variation of the Windom dipole is the Fritzel antenna, named after its inventor and manufacturer, Dr. Some of my fellow hams are actively engaged in. You can't buy so much added performance for so little money anywhere else! The CAROLINA WINDOM® was the first antenna to take advantage of 'VERT™' (Vertically Enhanced Radiation Technique). Both of these proved to be more suitable for modern day transmitters with a 50 ohm output than the original Windom antenna design. Antena WINDOM par 10/15/20/40/80 metros. The horizontal wires are black jacketed #14 Gauge Stranded Copper wire that is easy to work with, unlike the bare solid copper clad steel wire used by a few other antenna manufactures. Being 133 ft. 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. By serendipity, it also covers the 17 and 2 meter bands. H w ev hc l ign si nc eb r- u d t oh p. Evgeniy Slodkevich, UA3AHM The VS1AA antenna made by an American named Windom (1936) had been the ancestor of City Windom. The antenna is named after its inventor, Loren G. The Windom antenna is an off-center fed dipole with an unbalanced coax feedline. 9 feet (total 1/2 wavelength). For 160 M dipole --That means: 1. transverters-store. Extra to order: 6m wire for Windom/OCF antenne :Price 9,00 euro. Below is my dilemma. OCF-3K80 1 KW Multi-Band Off Center Fed Dipole $89. It's also ideal for those who want a high performance antenna with world class DX coverage 40, 20, 10, and 6 meters. with a 4:1 balun. I recently purchased a Carolina Windom 80 antenna and, after it was erected, immediately experienced some puzzling problems, as it would not take power from the transmitter, confirmed by high and erratic SWR measurements using a hand-held meter. The 4-Band antennas are OCF (off-center-fed), with a 23 foot leg and a 45 foot leg, totaling 68 feet. 15 m)long legs of 90 ft (27. I worked 100 countries (entities) in only 18 hours of operation with an antenna only 69 feet long. We like to say that there is something for everyone in our hobby. It is an hybrid antenna mixing properties of a dipole and a vertical. 667 feet long, and the other leg 91. Toroids used in my configuration are very Insulator block for my OCF Windom Dipole Antenna (Ham/Amatuer Radio). ro - un site al radioamatorilor romani de pretutindeni. 99 OFF-CENTER FED K4TR WINDOM ANTENNA 300F 160-10 - $169. By serendipity, it also covers the 17 and 2 meter bands. A feed line is attached to an optimum point along the dipole by a BALUN. ro s-au operat o serie de modificari. UV insulated stranded wire. I am a fan of the OCF dipole, but not of the Windom, which is a completely different type of antenna. That is where the current is at a maximum on the lowest resonant frequency. The Carolina Version. Visit Shop. The "Windom Antenna" was described by Loren G. The measurements below are for building a simple Dipole Antenna. Antenna Pattern: Carolina Windom. Dual cores, total of two (2) 2. Each balun and antenna is hand crafted, built right here in. Note 1 BACKGROUND FROM WINDOM TO OCFD 1927 – September; Loren Windom, W8GZ/W8ZG, was the first to reveal the Windom antenna to the radio amateur community by describing the antenna in the September issue of QST. Today I built and put up a OCF inverted-v dipole using with a 133 foot total length of #14 insulated THNN with the short leg cut to 44 feet. 3 band Carolina Windom. Save this seller. Resonant ½ wave dipoles when center fed will repeata resonant and resistive impedance at odd multiples of the fundamental. FD4 (80/40/20/10 m) Een bijzondere vorm van een Windom antenne is een FD4 van Fritzel. A 40M OCF WORKS ON JUST 3 BANDS: 40/20/10m. Previous Month Next Month January February March April May June July August September October November December. 131 sold 131 sold. The antenna I am speaking of is a reduced length 160-10 meter OCF dipole from RadioWavz. It is a half-wave long on the lowest frequency. The normal Windom is described as having a 1/3 length leg, and a 2/3 length leg. THE OCF FD4 (FD3) WINDOMANTENNAFD4 (80/40/20/10 m)The 4-band Fritzel model FD4 is a special version of a Windom antenna. That is where the current is at a maximum on the lowest resonant frequency. 4 inch (61mm) wound with PTFE wire is the best CURRENT BALUN design. Purists would not call this a Windom antenna anymore because of the absence of the single-wire feedline. The RadioWavz DX (OCF) Windom is ideal for those of you who do not use a tower and beam. My first inkling of it was from a 1936 article about an OCF (off-center fed) antenna that was simply a wire that was fed by another wire. The City-Windom behaves much like a normal Windom but is better suited to suburbia and can be suspended from a window to a suitable anchor point. 40-10 m OCF antenna layout. Electrical Scanning Antenna. THE OCF FD4 (FD3) WINDOM ANTENNA FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. 95 Special Order : DX160MSH : RADIO WAVZ DX160MSH: 160M SH DX(OCF) WINDOM 137FT $178. 00 Ex Tax: £115. 287 MHz, or a dipole length of about 32. Homemade Carolina Windom antenna. Dat is op de laagste frequentie een draad van een halve golflengte. The old version was fed just by a single-wire The page describes a Windom antenna with a 4:1 homebrew transformer. The OCF is prone to common mode problems. Place a 1:1 Balun on the Antenna end of the Feedline. This item OCF 8 Bands 160-6 HF Windom Antenna Flex-Weave Radiowavz DX80PL PROline Multi Band (80/40/20/10M) Off Center Fed Dipole Antenna 1500W SSB 800W CW Super Antenna MP1C All Band HF VHF Ham Radio Portable MP1. Maybe I will get the new antenna put up soon. A feed line is attached to an optimum point along the dipole by a BALUN. HIGH STRENGTH AERIAL WIRES. Find your nearest digital TV transmitter with Antennas Direct's mapping tool. 2% for the longest side after determining the half wave length at the lowest operating frequency…. Compute the approximate antenna length for the center frequency of the range for which you are trimming. This domain may be for sale!. Edgar was a friend, as well. The Radiowavz DX (OCF) Windom is a off center fed dipole antenna that exhibits outstanding performance on multiple bands typically without a tuner. CURRENT BALUN with 50 ohm COAX connector. With the middle at 30 feet and the ends at 10 feet the 7-Band antenna requires about 120 feet of ground space. Form-Fitting Pliable Nose and Chin Band. The RadioWavz DX (OCF) Windom is ideal for those of you who do not use a tower and beam. OCF antenna user from 1983. Phone 928-284-5553 for tech info on OCF antennas only. They may not all be totally new designs but, I hope that they are an improvement on the originals. My first inkling of it was from a 1936 article about an OCF (off-center fed) antenna that was simply a wire that was fed by another wire. This antenna wil be resonate on 6,10, 20 & 40m. Len Carlson, K4IWL Smithe Windom Six Band HF Windom antenna. Free shipping Free shipping Free shipping. 07 - Windom Antenna - Feed with coax cable. The 4-band Fritzel model FD4 is a special version of a Windom antenna. I recently purchased a Carolina Windom 80 antenna and, after it was erected, immediately experienced some puzzling problems, as it would not take power from the transmitter, confirmed by high and erratic SWR measurements using a hand-held meter. Antena Windom (OCF) 40-6m, putere maximă 1,5kW, lungime 20,4m. 5 - 54 MHz 5kW. WINDOM antenna 160/. So from a mechanical standpoint the. Our optional kits allow for Quitflex antenna wire feeder with vastly improved and service. The Windom antenna has been around forever it seems. In other words an 80-meter Windom 137 feet long would have one leg 45. I thought I would take time to share my HF antenna experiences since I am very happy with the antenna I have up now. ) The EAntenna 160OCF3 Windom 160 antenna is an ideal antenna for portable or fixed, with exceptional performance characteristics in all bands mentioned, even on other bands with coupler. A windom antenna is a single-wire-fed antenna which is worked against ground. The modern common Windom antenna is not an original single-wire fed Windom, but rather an off-center-fed or "OCF" two wire feed dipole. OCF windom model. The off centre fed (OCF) dipole. Think of the "Carolina" windom antenna (the modern version of the windom) as an "upside down vertical antenna", hanging down from its counterpoise strung (more or less horizontally) some 10 meters (or more) above ground. The antenna evolved from a concept that had its beginning back in 1929 when Loren G. The original OCF Windom built by K5IJB used 12% offset and 68-foot coax feedline with a 4:1 balun. Another feature of the Windom/OCF antenna is the greater bandwidth on each band than that of a single-band wire-type antenna. The CAROLINA WINDOM® was the first antenna to take advantage of 'VERT™' (Vertically Enhanced Radiation Technique). My supports (a sycamore and cherry tree) were about 230' apart, so if I wanted a full-size antenna, I needed something that I could slope at the ends. Although it is commonly called a Windom it is more properly described as Off-Center-Feed dipole. Box 620, Manchester, KY 40962. 4 inch (61mm) wound with PTFE wire is the best CURRENT BALUN design. Untuk menyediakan 1 buah antenna khusus (monoband) untuk semua band amatir adalah tidak mungkin. DX160 RADIOWAVZ DX (OCF) WINDOM 160M. Taking one vertical angle and frequency with another, the RadioWavz DX (OCF) Windom is Omni directional. It's up to the designer to select the best design for the job at hand and to utilize that design in the most efficient way. 80m Windom (OCF Dipole) hung from the peak of the roof The line heading to the window is just rope that goes into the window so that I can pull it back to work on it, detach it, etc. Radio wavz DX160 160M DX(ocf) windom 266FT. 95 Out of Stock. See other items. See my Shack page for links to my Windom Fan Dipole early and recent setups. Item information. The main category is OCF Antennas that is about Off-center-Fed dipole Antennas. Buckmaster recommends: Our 7-Band 3,000 Watt model is our best all-around performer, a good combination of performance and capability. AN 80M OCF WORKS ON JUST 4 BANDS: 80/40/20/10m. Evgeniy Slodkevich, UA3AHM The VS1AA antenna made by an American named Windom (1936) had been the ancestor of City Windom. As already mentioned it is fed at the 1/3 point. It was designed to cover 80, 40, 20 15, and 10 meters. Windom (W8GZ) who died in 1988. The Windom antenna (fig. Antenă Antenna Windom (OCF), putere maximă 1,5 kW, lungime 42 m. Also - This Windom Antenna can be Rigged from the Tips of the Top Two Elements; with the Center Lower without a Center-Support-Point. It was by Windom's name that the antenna became known. It is a long half wave on the lowest frequency and is powered by a coaxial cable through a transformer inserted in the wire to a third from one end. The Windom is an Off-center wire multiband Antenna. The Windom is just a horizontal halfwave of wire on the lowest frequency of. Length: 137 feet of bare #14 to. The Communicator. It was often called "Amerikanka" in the Soviet Union, and was mentioned by E. Check out this video on the Windom 40 Antenna from Chameleon Antenna. Toroids used in my configuration are very Insulator block for my OCF Windom Dipole Antenna (Ham/Amatuer Radio). Windom ( QST, Sep 1929, pp 19-22, 84) so this kind of antenna was named after its inventor. 03 - Twin-Led Marconi Antenna. A 9:1 Balun For Your End Fed Antenna End-Fed antennas do have their place in radio and other communications work. Otherwise be smart and reduce 273846055793. Fritzel FD4 OCF Dipole The Frizel FD4 Windom is an OCF (Off Centre Fed) antenna that has been around for a long time. Each connection is covered with adhesive lined heat shrink. All tests below were made with the Windom (OCF) designed for a feed point of 37. The 7-Band antenna is OCF (off-center-fed), with a 46 foot ( 14. This is a simple wire multiband antenna that can be fed with either coax or ladder-line and can be made to operate well from 160- to 10-meters with an antenna tuner. Warranty:24 month. Download buxcomm windom antenna for FREE. "MULTI-BAND" is one of the Windom's (OCF's) biggest attractions. 4 inch (61mm) wound with PTFE wire is the best CURRENT BALUN design used with unbalanced antennas. The two toroids make the 1:4 impedance transformation and the additional common. My supports (a sycamore and cherry tree) were about 230' apart, so if I wanted a full-size antenna, I needed something that I could slope at the ends. From an electrical standpoint the best way is to hang the center at the apex. 5 Kw power handlingThe antenna&nb. 0MB PDF, half-page slides with notes). De antenne wordt op eenderde van zijn. The Windom is an Off-center wire multiband Antenna. I'd really like to mount it above my roof line with the balun centered on the chimney - but being completely new at this I don't know if this is a terrible idea to have the antenna that close to the house. But that leaves all the weight of your balun, coax, and (in the case of a New Carolina Windom) RF choke unsupported by anything but the antenna-wire itself. OCF-8010E-3K OCF antenna (Windom)OCF/Windom antenna 133ft longCovers 80/40/30/20/15/12/10m (6m too) Power 3kW ICAS This is OCF antenna also known as Windom antenna fed at 19% of one end. Unlike Terminated Folded Dipoles and End Fed Inverted V antennas. M0CVO HW-20HP and HW-40HP. It needs no tuner on 40m, 20m and 10m. what the OCF dipole is all about. The effect is absent from most ordinary antennas. Then send out for a new supply of QSL cards. "The Off-Center-Fed (OCF) Dipole is a antenna design that uses the variation of resistance along a resonant dipole to provide a. I recently purchased a Carolina Windom 80 antenna and, after it was erected, immediately experienced some puzzling problems, as it would not take power from the transmitter, confirmed by high and erratic SWR measurements using a hand-held meter. 333 feet long. Find your nearest digital TV transmitter with Antennas Direct's mapping tool. Alpha Delta Communications, Inc. The antenna can be employed on 80, 40, 20 and 10m with considerable, though acceptable levels of VSWR. The feed-point of this type. OCF WINDOM DIPOLE ANTENNA 7 Band 3KW SSB, Details about Inflatable Air Track Training Tumbling Gymnastics Mat Home Yoga 19. THE OCF FD4 (FD3) WINDOM ANTENNA FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. 0MB PDF, half-page slides with notes). Note 1 BACKGROUND FROM WINDOM TO OCFD 1927 - September; Loren Windom, W8GZ/W8ZG, was the first to reveal the Windom antenna to the radio amateur community by describing the antenna in the September issue of QST. De opgegeven maten gelden voor geïsoleerd draad. Electrical Scanning Antenna. Today I built and put up a OCF inverted-v dipole using with a 133 foot total length of #14 insulated THNN with the short leg cut to 44 feet. Alpha Delta calls it an OCF antenna and it is made by Buckmaster Antennas. OCF 8 bands 160-6 HF windom antenna 5 Stars Windom Very seamless order & shipping was quite fast. Windom Antenna The Windom antenna and shows the results of several simulations made with MMANA-GAL, covering models optimized for the 20 m, 40 m and 80 m bands: Windom per gli 80 m Le misure sono le solite: 41 m. A Homebrew Poor Man All-Band Windom Antenna. 62 m) of Dacron rope. That is where the current is at a maximum on the lowest resonant frequency. This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom. Especially OCF dipole (sometimes called Windom) needs enough common mode reactance because the feeding point is "hot" - not in the zero RF. Frequency Coverage: 160 - 6 meters + 30, 17, 12 WARC. Feedpoint OCF Dipole or Windom. High Strength Aerial Wires are manufactured with high strength, high conductivity Bare Copper-Clad Steel (BCCS) and insulated with a high quality UV Resistant Polyethylene to provide you with one of the strongest and longest lasting antenna. Using our field day equipment we set up four wire antennas to find out for ourselves how they play. Super Antenna MP1DXMAX Low Profile Tripod 80m-10m HF +2m VHF Portable Antenna with Go Bags ham Radio Amateur. It all started with the Windom antenna… Windom Antenna The Windom was once a very popular multiband antenna. Save this seller. Antenna Width: 246ft. I immediately noticed an increase in the RX over the G5RV Jr. It is an hybrid antenna mixing properties of a dipole and a vertical. 4 inch (61mm) wound with PTFE wire is the best CURRENT BALUN design used with unbalanced antennas. It is an off centre fed dipole, with 10 feet of vertical radiator. Here are the calculations for the Carolina windom antenna design cut for the lowest working frequency: We take 37. So from a mechanical standpoint the. Wire antennas are a great simple way to work 40M and 80M rather than a noisy vertical antenna that requires horizontal radials. The CAROLINA WINDOM® was the first antenna to take advantage of 'VERT™' (Vertically Enhanced Radiation Technique). It seemed easier to feed the single wire against either an earth mat or counterpoise wires, either with a 4:1 current balun at the base of the antenna and a coax feed back to the auto-atu in. The antenna I am speaking of is a reduced length 160-10 meter OCF dipole from RadioWavz. The length of any wire antenna will vary due to the used wire thickness and the V-factor of the wire. 5 Kw power handlingThe antenna&nb. 40-6m OCF / Windom: 66′ long. ZU VERKAUFEN! 3KW SSB 1. Our optional kits allow for Quitflex antenna wire feeder with vastly improved and service. Smarter, stronger, and more elegant all-band ham radio antenna option. I emailed Chris to ask him if he thought the antenna would work OK with sloped ends. The Carolina Windom is a variation of the Windom (which used a single wire feed) designed by Edgar Lambert, Joe Wright and, I think, Jim Wilkey in the mid 80s. The Carolina Windom is very popular with modern hams, and at the same time is commonly the discussion of problems in online fora. Old CDs in Ten Band Antenna. A 160 Meter Antenna for a Small Backyard. Here I use a windom antenna on 80 - 10 m. 136 feet (45. 95 Our mission. I immediately noticed an increase in the RX over the G5RV Jr. Sketch - OCF Dipole vs Windom (21kB GIF) Sketches - Inverted-L for 160m Using Coax and Bazooka Match (49kB PDF) Schematic - Remote 3-Way Antenna Switch (49kB PDF) Mobile Antennas Mobile Antenna Optimization Clinic (3. Figure 1—The true "Windom" antenna was described by W8GZ in his. 00 - $1,235. One-Pieces, Overalls & Jum… Uniforms. Though the Original Windom antenna was a single wire feed, the Carolina Windom is coax fed and an improvement on the OCFD design with slightly different feed point, and a "recommended" current balun to assist in better SWR across the bands than a Voltage balun. 8% for one side and 62. Single wire fed Windom 80m long. My supports (a sycamore and cherry tree) were about 230' apart, so if I wanted a full-size antenna, I needed something that I could slope at the ends. I put one up once because the place where the coax dropped was really handy to my shack. Electrical Scanning Antenna. Actual lengths of wire were 123' 9" total. Fritz Spillner, DJ2KY, in 1971. Fritz Spillenger (SK), a German ham, call sign DJ2KY. Read more about this venerable wire antenna athttp://www. Have you ever used a Windom ham radio antenna? I get my first crack at one and you're invited to see how it does. I have it diagonally on my property, to fit on the lot. In the dual graphs the light line from the RigExpert scans are from the Shack end of the feed line to the balun. Having a Center "Drop" of about 10 to 15 Degrees; with the Bottom Windom Element Tips "Dropped" about 10 to 15 Degrees. end to end 14awg. Antenna Windom Links →. OCF-8010E-3K OCF antenna (Windom) This is the OCF Dipole antenna also known as Windom antenna fed at 19% of one end(19/81% ratio). This antenna is an off center dipole that was. 8% for the short horizontal element and a ratio of 62. Double Bazooka Antenna $40. The antenna was originally designed by Richard F o rm at sK1P O. Most people are familiar with G5RVs and I think many new hams are steered in that direction. Windom Antenna - DJ2KT Windom Antenna - from JA7KPI Windom Antenna - SV1BSX Windom-balun - winding instructions Windom Antenna the Carolina version Windom Off Center Feed - W8JI. A 40M OCF WORKS ON JUST 3 BANDS: 40/20/10m. The City-Windom behaves much like a normal Windom but is better suited to suburbia and can be suspended from a window to a suitable anchor point. You can erect dipole antennas in a variety of configurations to meet your needs: flat-top, inverted-V, sloping dipole, or folded dipole. com See more similar items →. and put a 160 meter signal on the balanced line and balanced antenna and the feedline will radiate just like a Corolina Windom because the antenna part is only 1/4 wave on 160 ( instead of 1/2 wave on 80 ) and you get uneven currents on the feed line. The two toroids make the 1:4 impedance transformation and the additional common. OCF/Windom for 6m-40m. That is where the current is at a maximum on the lowest resonant frequency. Pada awalnya Windom Antenna didesain dengan menggunakan twinlead sebagai saluran transmisinya, sebab saat itu untuk. 03 - Twin-Led Marconi Antenna. 19 may 2011. 62 m) of Dacron rope. Dat is op de laagste frequentie een draad van een halve golflengte. 8 DOUBLE BAZOOKA G5RV Antenna īǏƾijİLj ǎ ƱIJǁnjǎǐ ƱǎNjLjljǗǐ ± SV1GK Ƭ ƭƶƷƳƵƭƧ G5RV ĮȺǗ IJǎ call. It should be in the low portion of the 80 meter band (e. 95 OCF-3K160 1 KW Multi-Band Dipole $119. The rationale for the design is that it is a short dipole, not requiring. Most people still believe a Windom MUST be fed at the 1/3 - 2/3 point. Put up your own CAROLINA™ 160. Unlike Terminated Folded Dipoles and End Fed Inverted V antennas. The original Windom antenna (devised in 1928-29), named after Loren Windom, W8GZ. It is an hybrid antenna mixing properties of a dipole and a vertical. 2 meter/70cm Dual Band Collapsible Copper. Note 1 BACKGROUND FROM WINDOM TO OCFD 1927 - September; Loren Windom, W8GZ/W8ZG, was the first to reveal the Windom antenna to the radio amateur community by describing the antenna in the September issue of QST. Rancangan Windom ASLI (dari W8GZ) adalah antenna monobander, yang lebih mewarisi sifat dan karakterisitik antenna vertikal atau Marconi ketimbang antenna Dipole atau Hertz. The RadioWavz DX (OCF) Windom is a off center fed (OCF) dipole antenna that exhibits outstanding performance on all bands. The long end of the OCF ( 16 ft) The antenna wire was wrapped on separate pieces of conduit and joinned together and soldered. I am a fan of the OCF dipole, but not of the Windom, which is a completely different type of antenna. com See more similar items →. (• Windom(for(10(- 40(meters(shown. Antenna looks to be very well put together from high quality components. Building a 1 foot junk box magnetic loop final design and on-air test. The rationale for the design is that it is a short dipole, not requiring. The two toroids make the 1:4 impedance transformation and the additional common. 80-10 meter OCF antenna layout For the PAL-OCF8010 with 200 feet of RG213 feed line and an average height of 30 feet: For the PAL8010OCF, the impedance is very well behaved in a limited, easy to match range throughout the 1-30 MHz range and, in fact, that antenna also works very well on 6 meters with very good gain. The Fairy 2. A marriage of the windom and slinky antennas. Electrical Scanning Antenna. It's also ideal for those who want a high performance antenna with world class DX coverage. THE OCF FD4 (FD3) WINDOM ANTENNA 19 may 2011. Windom Multi Band Antenna 80 - 10 meters with Kevlar radials. The feed-point of this type. Insulators:2. 44′ on the long side & 22′ on the short side. The original Windom antenna (devised in 1928-29), named after Loren Windom, W8GZ. Dave K4JRB. Improve this answer. 3 band Carolina Windom. The antenna is actually a 3-band CL-OCFD antenna (160, 80 & 75 m) where the center loading moves the natural third harmonic to the lower end of the 80 m band, below the 75 m second harmonic. Radiowavz Dx40 Off Center Fed (ocf) Windom Dipole Antenna For 40, 20, 10m: New. 95 MBITR Tactical Vest Antenna $124. Designed to be light weight, easy to work with and easy to service. OCF WINDOM DIPOLE ANTENNA 7 Band 3KW SSB - CHF 142. It's an efficient no-fuss antenna that provides good performance on a single band. Newegg shopping upgraded ™. This is the best combination I could find. 80m Windom (OCF Dipole) hung from the peak of the roof The line heading to the window is just rope that goes into the window so that I can pull it back to work on it, detach it, etc. After its initial publication on the Internet in 2007, the CL-OCFD was subsequently described in the following publications: Ed Spingola, VA3TPV. Dual cores, total of two (2) 2. That is, you get more radiation off the ends for a tradeoff of broadside radiation, and you can install the antenna with a single support. If it is held up in the middle and is in an "inverted vee". Lightweight, pocket-sized, portable windom antenna support for ham radio. Detailed Test Results. Windom antenna model in MMANA-GAL. CURRENT BALUN with 50 ohm COAX connector. 01 - Tee Antenna. NVIS Antenna Information Near Vertical Incident Skywave (NVIS) Antenna - W0IPL Commercial Windom/OCF Antennas Balun Designs - Baluns Maxcon Antennas Radio Works. Product Information. What you have is known as an OCF (off-center fed) dipole. I do need to make a correction in calling the EFHW a non. De antenne wordt op eenderde van zijn. It's also ideal for those who want a high performance antenna with world class DX coverage 80, 40, 20, and 10 meters. We at Radio Wavz have one goal, to serve the customer to the best of our ability. Here is my home HF antenna. A 160 Meter Antenna for a Small Backyard. Made to lastUsed by DX contesters all over the worldDurable in constructionDesigned to be. Angle of feed each side must be great. See full list on onallbands. The New Carolina Windom uses a horizontal, OCF element and with balun / choke spacing, will radiate on the vertical feed line space between, the balun and choke. Buy Radiowavz DX80PL ProLine Multi-Band 80-10M OCF Windom Dipole Antenna 136ft with fast shipping and top-rated customer service. Used by DX contesters all over the world. The Helical Windom Antenna. Item information. The old version was fed just by a single-wire The page describes a Windom antenna with a 4:1 homebrew transformer. A 25' piece, along with the 41' piece makes an OCF dipole with 40 meters the lowest band. I thought I would take time to share my HF antenna experiences since I am very happy with the antenna I have up now. If you wanted to put the 6m on you have to remove the 30m ore 15 m band. 0 out of 5 stars 8 ratings. OCF Windom Dual core Current balun 3KW Ladder line. 7 COROLINE WINDOM ƶİNJ. The one thing that might help you is a 1:1 current choke below the feed point 4:1 balun. Product Information. Compute the approximate antenna length for the center frequency of the range for which you are trimming. 5 out of 5 stars. OCHO Lightning to USB Car Charger for Apple iPhone iPod iPad - 1. Purists would not call this a Windom antenna anymore because of the absence of the single-wire feedline. See my Shack page for links to my Windom Fan Dipole early and recent setups. It needs no tuner on 40m, 20m and 10m. 95 Add to basket; ICOM AL-705 | Magnetic Loop Antenna for IC-705 | LAMCO Barnsley £ 359. The Fairy 2. 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. Building a 1 foot junk box magnetic loop final design and on-air test. This antenna also works fairly well on all odd harmonics,. My first inkling of it was from a 1936 article about an OCF (off-center fed) antenna that was simply a wire that was fed by another wire. FD4 HF Dipole Antenna 80m 40m 20m 10m windom ocf wire balun unun multiband. Perhaps the most popular multi-band “Windom” or more accurately, OCFD was the German-made Fritzel FD4 antenna, described by the late Dr. 44′ on the long side & 22′ on the short side. After researching antenna options, I selected NI4L’s 8 band OCF Windom. The old version was fed just by a single-wire The page describes a Windom antenna with a 4:1 homebrew transformer. What you have is known as an OCF (off-center fed) dipole. But that leaves all the weight of your balun, coax, and (in the case of a New Carolina Windom) RF choke unsupported by anything but the antenna-wire itself. This antenna started all my experiments. com has been informing visitors about topics such as UHF VHF Antenna, Ham radio Antenna and APRS. 40-6m OCF / Windom: 66′ long. OCF-3K80 1 KW Multi-Band Off Center Fed Dipole $89. Below is my dilemma. H w ev hc l ign si nc eb r- u d t oh p. A 25' piece, along with the 41' piece makes an OCF dipole with 40 meters the lowest band. Multiband HF antennas, part 3, Windom and OCF dipole. 4-Band OCF Antennas 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 feed line is attached to an optimum point along the dipole by a BALUN. (3) 3 product ratings - RadioWavz DX40 Off Center Fed (OCF) Windom Dipole Antenna for 40, 20, 10M. Radio wavz DX160 160M DX(ocf) windom 266FT. Same with the windom which is basically the same thing. THE FD4 (FD3) windom antenna The 4-band Fritzel model FD4 is a special version of a Windom antenna. Between the antenna and the line isolator was 25 feet - not 10 feet. A feed line is attached to an optimum point along the dipole by a BALUN. It's also ideal for those who want a high performance antenna with world class DX coverage 40, 20, 10, and 6 meters. Have you ever used a Windom ham radio antenna? I get my first crack at one and you're invited to see how it does. For example, you may want to trim a 20-meter band dipole for the General Class phone frequencies of 14. Greyline 12-foot DX Vertical Antenna, an OCF vertical dipole for all band HF radio operation. 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 Maxcon Wire Antenna Deployment System $139. Find your nearest digital TV transmitter with Antennas Direct's mapping tool. Vine Antennas AS-OCF-404-HP | High Powered Antenna 40m to 4m | LAMCO Barnsley £ 159. Long end of the wire (89 feet) is supported by a fiberglass pole about 12 feet agl. A city windom is a unique end-fed antenna design featuring a long wire plus a resonant matching network comprising a balun, a length of RG-58 and a line isolator. On The Move Antenna. 62 m) of Dacron rope. I thought I would take time to share my HF antenna experiences since I am very happy with the antenna I have up now. August 2011. My 80M OCF dipole is 137 feet, so the extra 10 feet shouldn't be a problem here. On 130 feet 8% is about 10 feet, so sorry i will not give any length, due to lots of unknown factors. On the other hand, an OCF dipole is an ungrounded dipole antenna fed with twin-conductor line, either coaxial or open wire parallel conductors. RZ9CJ OCF Antenna Compendium Simple Dipole Antenna for the 7 and 21- MHz Band Windom Antennas. I settled on the “New” Carolina Windom design by K4IWL. 667 feet long, and the other leg 91. The normal Windom is described as having a 1/3 length leg, and a 2/3 length leg. I'm limited at my present QTH to really only having an option for one outdoor antenna at a time run from the peak of my roof and presently that's my 40m Windom. OCFs are derived from the Windom antenna, a 1929 concoction using a single- wire feed attached to the antenna element at what was believed to be the 600-ohm point. Buy Radiowavz DX80PL ProLine Multi-Band 80-10M OCF Windom Dipole Antenna 136ft with fast shipping and top-rated customer service. The 3 additional feet of wire will be used to fine-tune the OCF after you install it. ZU VERKAUFEN! THIS COMES AS PICTURED. The length of any wire antenna will vary due to the used wire thickness and the V-factor of the wire. The remaining 43 feet was used between the line isolator and radio. (3) 3 product ratings - RadioWavz DX40 Off Center Fed (OCF) Windom Dipole Antenna for 40, 20, 10M. Windom Multi Band Antenna 80 - 10 meters with Kevlar radials. Free shipping Free shipping Free shipping. This antenna is ideal for those who do not use a tower and beam. 43 m) and 45 ft (13. The original Windom antenna (devised in 1928-29), named after Loren Windom, W8GZ. 95 RG8X Coax with PL259 Connectors Installed Available in Multiple Lengths. 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. Flat-Panel Foldable Terminal ZL60P-E. The antenna was originally designed by Richard F o rm at sK1P O. Ham Radio Electronics Mini Free Ham Radio Antenna Wifi Antenna Arduino Diy Electronics Electronics Projects Electronic Gadgets For. The original OCF Windom built by K5IJB used 12% offset and 68-foot coax feedline with a 4:1 balun. A Communicator Reprise: May 2013. Compute the approximate antenna length for the center frequency of the range for which you are trimming. 95 Maxcon Wire Antenna Deployment System $139. The modern common Windom antenna is not an original single-wire fed Windom, but rather an off-center-fed or "OCF" two wire feed dipole. The antenna cover 80, 40, 20, 17, 12, 10 with no tuner required !1. 4 , 9 MHz, 12. 2% for the longest horizontal element. Two wires, each a quarter wavelength long, connected to a coaxial cable feedline in the middle. In the dual graphs the light line from the RigExpert scans are from the Shack end of the feed line to the balun. It's also ideal for those who want a high performance antenna with world class DX coverage 80, 40, 20, and 10 meters. OCF windom model. Holding true to the original Windom formulas, I used a ratio of 37. Greyline 12-foot DX Vertical Antenna, an OCF vertical dipole for all band HF radio operation. 2 tấn 6m $$0969 776 536$$ Pa lăng cáp điện 2 tấn 6m 9m 12m 18m. In our example that would be a trim for about 14. Specifications. UV insulated stranded wire. This is an off centre fed dipole incorporating the M0CVO 4:1 balun at the feedpoint enabling it to be fed directly with 50ohm coaxial cable. I built an 80m OCF/Off Center Fed antenna and have found it to be one of the best mufti-band antennas you can use. The effect is absent from most ordinary antennas. All antennas need a common mode balun. 43 m) and 45 ft (13. Outstanding performance on all bands with a tuner. Taking one vertical angle and frequency with another, the RadioWavz DX (OCF) Windom is Omni directional. Single wire fed Windom 80m long. 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. Made with stranded 14 awg UV insulated wire. Now, how was a Windom antenna developed? It began with a center-fed, half-wave dipole. Current type 4:1 (200:50 Ohms) BALUN is another product designed for OCF antennas (Off Center Fed) also known as Windom antenna. OCF-3K80 1 KW Multi-Band Off Center Fed Dipole $89. The average storebought windom and G5RV's suffer from excess feedline losses due to the micky mouse feedline design. It is 66' overall length. The antenna was a decommissioned LOM antenna waiting for the bulldozers for about 2 years. The New Carolina Windom uses a horizontal, OCF element and with balun / choke spacing, will radiate on the vertical feed line space between, the balun and choke. A 40M OCF WORKS ON JUST 3 BANDS: 40/20/10m. The search for a simple broadband, multiband antenna with acceptable SWR over the entire 80/75-meter band continued with the publication of the article by Witt, AI1H, in April 1989 QST. Long end of the wire (89 feet) is supported by a fiberglass pole about 12 feet agl. Sealed Bag of 50 Piece E-Z Pleated Earloop Mask - Blue, Fluid Resistant, Soft, 3-Ply Pleated Material. The RadioWavz DX (OCF) Windom is ideal for those of you who do not use a tower and beam. The antenna was a half. It is an off centre fed dipole, with 10 feet of vertical radiator. The 4-band Fritzel model FD4 is a special version of a Windom antenna. Author = NJ2X. Interesting to study in the Internet: windom, carolina windom, ocf dipole, double windom, balun. Bought the Buxcomm Windom OCF for 6 to 80m. Otherwise be smart and reduce 273846055793. - Type : Antenna. The Radiowavz DX (OCF) Windom is a off center fed dipole antenna that exhibits outstanding performance on multiple bands typically without a tuner. Join thousands of satisfied visitors who discovered Bucks com, Antenna Cable and UHF Radio Antenna. One-Pieces, Overalls & Jum… Uniforms. 65 Ft, Details about MMA Halb Finger Boxen Kampf Handschuhe Mitts für Sparring Stanzen Training, Bicycle lighting reflector LED Light Valve Caps-Energy-Saving, Details about Waterproof running Belt Waist pack for. For example, you may want to trim a 20-meter band dipole for the General Class phone frequencies of 14. It is an off centre fed dipole, with 10 feet of vertical radiator. I got to try a Windom antenna over a really good ground system and was pretty much amazed at the performance. what the OCF dipole is all about. Receiving antennas including Beverages and Beverage Antenna Construction, Loops, K9AY, Pennant, Flag, EWE, Slinky Beverage Antennas, vertical arrays, magnetic loop antenna, and terminated loop arrays. 7-Band: 75/80, 40, 20, 17, 12, 10, & 6 meters 135 feet (45+90) long. So from a mechanical standpoint the. It was by Windom's name that the antenna became known. I am lucky to have some public land I can use to fit the antenna. This inspired author Belrose, VE2CV, to reopen his files on the "Windom antenna," or, more properly, the off-center-fed dipole. The big advantage of this design is that you can make an antenna that does not require an antenna tuner by utilizing the constant impedance of the happy convergence that happens at 120 degrees. 5 out of 5 stars. 25 meters ) leg and a 90 foot ( 27. 95 Special Order : DX80MSH : RADIO WAVZ DX80MSH: 80M SH DX(OCF) WINDOM 77FT $107. Having a 50m fibreglass tape measure is essential when building HF antennas. HW-20HP HW-40HP. One side is 41'.