The half-size version is known as the FD3 40-20-10m antenna. Name: Fritzel FD4 HAM radio antenna. The antenna is completely assembled and no adjustments are necessary, just screw in your coax and raise the antenna asThe Winegard Elite 7550 is the smart option and the best TV antenna for outdoor installation. 03. While most of the antennas were made by "name" manufacturers, the Gesobyte and the Btfdreem were chosen specifically. The Fritzel FD4 antenna is a classical antenna in our series of HS4 Legendary Multiband Wire Antennas. Jobbat is el tudtam volna képzelni. ( 3 ) Estimated Ship Date: Monday 11/20/2023. Perhaps the most popular multi-band “Windom” or more accurately, OCFD was the German-made Fritzel FD4 antenna, described by the late Dr. name xxx qth winterthur near zurich this is my first qso on js8, funny . Fritzel used the shown dimensions of 13. VSWR performance is worse only on 17m and slightly on 40m. Fritzel FD4 OCF Dipole The Frizel FD4 Windom is an OCF (Off Centre Fed) antenna that has been around for a long time. Le petit plan de masse est trés pratique "radians courts" :gain de place au sol par rapport aux radians d'une verticale 1/4 d'onde. Comes with an ante. incl. The Windom - Off Centre Fed Half Wave Dipole Antenna. PWR TRAPS 4 cm Ø. Elsewhere in Africa, David, VE7VR is active as A25VR from Botswana until 3 June. 204 - Low Radiation Angle Full-Wave Loop Antenna for 80m. Fritzel used the shown dimensions of 13. Rather than feeding the conventional 33%/67% we like the 29%/71% feed point wherein the feed point is 21% from one end and fed with a 4:1 OCF Current balun with built in feed line choke1971 - Dr. This trademark application was filed with the USPTO (United States Patent and Trademark Office) under the trademark classification: Computer Product, Electrical & Scientific. The original Windom antenna from the late 1920s was an off-center fed resonant dipole with a single wire feedline of any length. TNX for nice contest. Odg: Multiband FD4 antena. This video provides background on what many of us believe to be the greatest off-center-fed dipole antenna ever created. When the dipole is installed horizontally, at about one meter (3-4 feet) above ground, you effectively get a NVIS low-noise dipole. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk. The system has an impedance of 70 - 100 Ohm and for connection. It is not an acceptable performer on 30, 17, or 10 meters. Fritzel used the shown dimensions of 13. Final Clearance. This is a pity, because most hams would put up a wire antenna especially for the lower bands where beam antennas are more difficult to erect. This has also been the case in Germany. The FD4 antenna for 20/40/80 had a lot of interference on 80 that we could not trace to a source in the building. On al the bands a SWR of 1:1!!! The FD4 (FD3) Windom Antenna The 4-band Fritzel model FD4 is a special version of a Windom antenna. America. The half-size version is known as the FD3 40-20-10m antenna. antenna. FD4 antenna, fent mérve a kábelhossz beszámításával. Hi all, I bought the Mini1300 from China and Software says Version1. Install the game on an SSD. A Portable NVIS Antenna is QRP-Friendly. The performance characteristics are quite outstanding. 6-Band Windom antenna. The following plot shows the measured SWR of an FD4 antenna from 3 MHz to 30 MHz with about 20 m of RG58U feeder line. The FD4 Windom. 50 m 32. This link is listed in our web site directory since Friday Mar 10 2017, and till today "How to construct a multi-band dipole using speaker wire" has been. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. This has also been the case in Germany. +49 7276 9668-0 info@wimo. Versi Dr. The antenna can be employed on 80, 40, 20 and 10m with considerable, though acceptable levels of VSWR. T. RF-1936/38 Portable Crossed-Pole Antenna Series MECHANICAL RF Connector Side feed with wing nut. Military AS-2259/GR There are a number of different NVIS antenna plans on the internet that can be adopted to amateur radio use. hello, 13,5m; 27,5M and a 1:6 balun. and "bout 15 MHz if matching is SWR Window on the following antenna 'g Of 41. Here I have an FD4 Windom antenna running down the garden, this is an 80 metre dipole but fed offset (about 1/3rd of the way along it’s length) with a step down Balun to match the 50 ohm coax and has a fairly low SWR on 80, 40, 20 and 10 metres. Tether for side kites 7. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. THE OCF FD4 (FD3) WINDOM ANTENNA 19 may 2011. It had the same dimensions as the VS1AA multiband Windom antenna, but fitted with a 300Ω balun in its feedpoint and fed over coax. Fritz Spillner, DJ2KY, in 1971. Add to Cart Details. Top. balun, incl. Add to Cart Details. Both of these proved to FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. Main "coax lifter kites 2. The Windom - Off Centre Fed Half Wave Dipole Antenna. • Radioddity's limited warranty applies to all BRAND NEW items sold by radioddity. In stock, shipped in 1 to 2 days. I improved my setup with a FT920, 3 el Monobander for 10m and made Packet Radio in 1997. A shorter version FD3 for 40-10m operation is also developed. So I checked the frequency and had to adjust it (27MHz calibration)I'm just afraid that if we install a PayPal box at the LoTW page, paying can become mandatory before QSL-ing. America. Please select a product. The main category is Dipole antenna that is about Dipole antennas plans. That should be a good anchorpoint to mount my X200 and a wire antenna for HF. It comes complete with a 1:6 balun with SO-239 connector. This first video is by a beginner for beginners! In an unc. It is a modularized Amateur Radio Transceiver where operators build their own radio using plug-ins and virtual antennas. It was designed to cover 80, 40, 20 15, and 10 meters. but it was nice to meet you. For a monoband antenna, connect the. com in a single category. com in a single category. This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom. be Multiband Delta Loop (W2EGH) | MyHam. 1750 114. The half-size version is known as the FD3 40-20-10m antenna. Also, a power amplifier, L4B, is on the way to Baghdad. This link is listed in our web site directory since Sunday May 6 2007, and till today "K7MEM - Inverted V Antenna Design" has been followed for a total of 4381 times. 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. Recent DX Spots 6O0X He is using 100 watt HF Transceiver and FD4 antenna. The FD4 (FD3) Windom Antenna. Mike has with him two transceivers: TS-850SAT and IC-706. Napajanje je na L/3 odnosno 2L/3. That is a wire of half a wavelength on the lowest frequency. It is still available from They continue the Fritzel antenna business. , 4 times) over a simple low dipole are possible • Consider horizontal loop or Lazy H over aOur experts are there to help you in word and deed - independent of the frequency range and radio application. RF-1936/38 Portable Crossed-Pole Antenna Series MECHANICAL RF Connector Side feed with wing nut. This was a good destruction from my dentistry study on the weekend. Perhaps the most popular multi-band Windom or more accurately, OCFD was the German-made Fritzel FD4 antenna, described by the late Dr. Regardless of how high the antenna is, a roof, especially a metal roof, will have a negative effect on the antenna pattern if the. The antenna is off center fed with a matching network and is mounted next to an insulator of fiberglass and polyester resin. Add To Cart. If the insulator has been exposed to our climate for some time, the resin "evaporates" on the surface. . 36 . also works on the 80 and 160 meter band. Fritzel FD4 OCFD (10-80m) Fritzel FD4 OCF Dipole Fritzel FD4 OCF Dipole The Frizel FD4 Windom is an OCF (Off Centre Fed) antenna that has been around for a long time. I'm just afraid that if we install a PayPal box at the LoTW page, paying can become mandatory before QSL-ing. The main category is Dipole antenna that is about Dipole antennas plans. > Sent: Thursday, November 04, 2004 7:05 PM Subject: Re: [ARRL-LOTW] DXpedition SupportPut together a quick shortwave antenna using just a few pieces of electrical fencing supplies. Configure & Download. 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 Stealth Multiband Vertical A vertical antenna for 40 and 80 meters band, using a telescoping. And the length of the legs must match. The 4-band Fritzel model FD4 is a special version of a Windom antenna. Délután 4-re már állt az FD4 antenna és az azt tartó pecabot. . ) If there is no roof, then 1/4 wavelength above ground is good for higher angle local skip work. Rating & Comments (0) Tags (7) Alternate Versions. I suggest that new frequencies be promulgated, a few KHZ further away from FT8 on the popular bands , such as 40m, 20m 17m 15m. ). hofi de) . Napravio bih multiband Windom antenu. It covers 7 bands, 10-12-15-17-20-40-80m. VAT, plus shipping €63. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer inserted in. com and other authorized dealers (except Xiegu). i missed the russian stations!! oq5m: on5zo or6t: oq4u on5xx on4qj or7r: on4lg ot2j: ot2j on6ix on7vg on3daf pa0rsm first time uba contest: pa3cgj not so many time to participate. The half-size version of the FD4 is known as the FD3 (40,20,10m) and is the subject of this article. Systems FCC-4 half-wave dipole antenna, also know as the reference dipole antenna, is the simplest form of an antenna. 0: Using (but not overusing) DX Spotting and Making Manual. I was able to get an excellent deal on a lightly used IC-718 that includes a tuner and power supply. I found some people to call the coax fed antenna with a balun "FD4" - but some other people call FD4 the modification mentioned by Franco IK1OWB (but the measures are doubled: 9. The half-size version of the FD4 is known as the FD3 (40,20,10m) and is the subject of this article. The Fritzel FD4 antenna becomes more popular in Europe and N. Find many great new & used options and get the best deals for Radioddity INF-641 Dual-Band 21CM SMA Female Booster Antenna for Two-way Radio at the best online prices at eBay! Free shipping for many products!On Tue, 22 Jun 2004 00:56:48 +0000, M1LCR wrote: between 3. Rengeteg volt az autó és az ember. Rest assured, both problems are dealt with by the CL-OCFD, also list-ed at the bottom of Table 1. 38m) split. 7 Mllz arc available if the high fre- quency is directly coupled out. Since it is resonant on multiple bands the signal level at the receiver is high. You have tried to build an FD4 antenna which is no bad solution at all. Dipol - FD3 - FD4 (1/1) TA4AU: Hi All. Len Carlson, K4IWL. Add a comment. On higher bands it did not work well. Today’s versions, based on the original Windom, include the common OCF and Carolina Windom. OK2SWD. HamSphere 4. At a first glance, the antenna looks like an Off-Center-Fed Dipole (OCFD). that's not what I'm trying to explain. The 4-band Fritzel model FD4 is a special version of a Windom antenna. So I checked the frequency and had to adjust it (27MHz calibration) But still. I suggest that new frequencies be promulgated, a few KHZ further away from FT8 on the popular bands , such as 40m, 20m 17m 15m. 2017-10-16. Tehát amit lent mértem az közel sem az, ami az antenna talppontjában ( a balun alsó végén ) lenne. . Furthermore, none of these designs offered 30 m. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. The dimensions were the same as the multi-band Windom antenna, but fitted with a 200Ω (4:1) balun at its feed point and fed with 50 ohm coax at lower heights above the ground. Part Number: MFJ-1779A. This result suggests that sequences outside the C and GMR35H08 elements restrict fd4/fd5 expression to the ventral imaginal discs. Also watched the livestream on Youtube Looking forward fo christmas this year. The photos of the FD4 in web adverts show Eyelets. 8-band antennas need 239 feet of ground space end-to-end. During experiments with for example FD3 and FD4 types, I had noticed that there was a "Windom" point at a length of about 27 m. g. 6:1 and less than 1. FD4 antenna, lent a kábel végén mérve. 110/220 Volts. *Note: The FD4 Windom is a 300Ω balun-fed antenna with lres = 41. 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. . The FD4 is almost ready, but the weather hasn’t cooperating lately. Ultra Vizion HD Digital TV Antenna: $44. 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. Baldur Drobnica is using 100W on the HF bands with an FD4 antenna. « u: 31. BEST LONG-RANGE: Five. Unlike typical antennas, this is a non-resonant, Off Center Fed Dipole (OCFD) antenna. The. com The 4-band Fritzel model FD4 is a special version of a Windom antenna. 1971 - Dr. In any case, tuning wire antennas to resonance using RigExpert AA-35 ZOOM and AA-55 ZOOM will guarantee the optimum antenna performance. Hari Wire Groundplane Antennas. 25 10. In the total length of this antenna is 41m, height is about 11m, and diameter of element is 2mm. America. Republic of Germany 4, 04450 Federal Republic of Germany (26. 11ax) Adapter with 2 External. Fritz Spillner, DJ2KY, in 1971[1]. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. If anyone has experience, poradte. 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 Longwire antenna basics basic notes on building longwire antennas for medium waves 6-Band Windom antenna The FD4 (FD3) Windom Antenna - The 4-band Fritzel model FD4 is a special version of a Windom antenna. , Corvallis, OR . Modified: 11/26/2021. I still young so I thinks this is normal, didn't we all start small. The half-size version is known as the FD3 40-20-10m antenna. Fritzel FD4 OCF Dipole Fritzel FD4 OCF Dipole The Frizel FD4 Windom is an OCF (Off Centre Fed) antenna that has been around for a long time. FDH 4000, 288 distribution fibers, no splitters loaded, LC/APC, dielectric, loose tube, 100 ft stub, distribution cable all 288f stub and input cable 24. So I checked the frequency and had to adjust it (27MHz calibration)3/20/20 #435. . Free Shipping. Mohu Gateway: $35. • Radioddity's limited warranty applies to all BRAND NEW items sold by radioddity. The Windom (also called "OCF", Off Center Fed) antenna is one of the most popular wire antennas for radio amateurs. 3 m dia loop and E field antenna, 2. Actually I could not get out of Europe on it. Bit easy compare with logging QSO on the higher bands. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. 55 m dipole fed with a 8. About HF Linked Dipole Antenna Calculator. 0 Extras: Using the Editor to Customize Your Transceiver. The FD4 (FD3) Windom Antenna. At present some Czech amateurs call it "PA0FRI" antenna. But it was over water, the villa pool hi. The Fritzel FD4 antenna becomes more popular in Europe and N. VAT, plus shipping €201. . 00. It will match on even and odd harmonics - but it. The Fritzel FD4 antenna becomes more popular in Europe and N. The Standing Wave Ratio (SWR) is the parameter that is easiest for most hams to measure, as meters are very common, both built into many newer radios or as a shack accessory. Antena ta charakteryzuje się szerokopasmowością (1:6) oraz dużą odpornością na zakłócenia. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. The plot shows the current distribution on a 42 m long FD4 Windom antenna for the frequencies 80, 40, 20, 17 and 10 m. It was intended to be used on one frequency only. If the installation site permits, a dipole antenna in a vertical "Vee" configuration has radiation patterns suitable for NVIS applications -- and can have useful low-angle radiation, as well. BEST COMPACT: Antennas Direct ClearStream 4V Long-Range TV Antenna. Fritz Spillner, DJ2KY, in 1971. The antenna rotor needed some tries to get moving again. antenna systems are easily carried and installed by two people in less than 15 minutes. foot mast. Len Carlson, K4IWL. 4-5 meter. 0, but I wonder how to send WSPR or FT8. 6 band windom anten 80-40-20-17-12-10m Let's make an antenna so that it is easy, inexpensive, no material problem, working in every band and efficient. com in 2 categories. 8-m and 27. 68. g. Add to Cart Details. More bandwidth can be obtained with the rolled up ribbon stub system («fig). The J Pole HANDBOOK 1 of 15 8272007 8:18 AM Serving HAM Radio since 1959, On the Web Since 1995 Order Toll Free Monday through Friday,…Of course this will only help hams/dxpeditioners with net access or credit card accounts. FD-4 antenna 3. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. Short video of 40m swl :) Thanks for watching my HAM radio videosBANG FOR THE BUCK: Pingbingding Digital Amplified Yagi HDTV Antenna. Includes 1x Dipole Antenna Base with 60cm RG174, 2x 23cm to 1m telescopic antenna, 2x 5cm to 13cm telescopic antenna, 1x 3 meter RG174 extension cable, 1x Flexible Tripod Mount, 1x Suction Cup Mount. empfangen. The Hobart FD4/150-2 garbage disposer offers a simple, efficient and economical way to dispose of food waste in restaurants, hotels, or hospitals, serving up to 500 meals per day, cafeterias, commissaries, or schools serving up to 1000 meals per day, or vegetable/salad prep areas of restaurants serving up to 2000 meals per day. K1POO 4 Band Off Centre Fed Dipole (40-20-15-10m ) To demonstrate the accuracy of the MMANA-GAL model of the K1POO antenna, the results from the MMANA-GAL program and Rob’s (M0RZF) Vector Network Analysis are shown below. It was intended to be used on one frequency only. See physical description below. Unlike the endogenous expression of the fd4/fd5 genes, the C element is not restricted to the ventral imaginal discs (legs and antenna), as activity of this CRM is also observed in the wing disc. H. Note the circled area at 1/3 length - this is where the impedance is about the same for all these bands. 80-10 meter OCF antenna layout. KEY 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. 70cm directional antennas with 16 -. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. Its main advantage was that it could easily be matched to a tube transmitter. The Fritzel FD4 antenna is a classical antenna in our series of HS4 Legendary Multiband Wire Antennas. Whereas the FD4 being really an 80 metre dipole has lots of lobes and becomes almost. German Old-Timers immediately recall the well-known Windom antenna that Kurt Fritzel, DJ2XH, under the name FD4, brought to the German market in the early 1970’s (still available today by hofi, w . The dipoles are cut for roughly 6. 156. 75 MHz) from the antenna. 3. America. 6-Band Windom antenna - Theory and construction of a novel trapless center-loaded off-center-f. Vertical antennas made of steel wire, monoband or multiband, with balun and radials. 36 . Source for Fritzel Antennas? 10. Study of the Off Centre Fed Dipole Antenna - G8ODE Short Long Feed point The Off Centre Fed Half-wave Dipole The Off-Centre Fed Half-Wave Dipole, more commonly referred to as the OCFD, is very popular because it offers good performance as a multi-band antenna using an antenna matching unit in conjunction with a 4:1 or 6:1 current balun. I built it using 3/4 inch copper pipe with rg-8 running up the center. The antenna was clipped to the RTL-SDR V3 antenna base without the telescoping whip – alligator clipped to the threaded mast. The main category is Dipole antenna that is about Dipole antennas plans. If you find my channel informative and entertaining, I hope you will consider joining my support group by c. Both of these proved to1971 - Dr. The wire antenna is the classic amateur radio antenna. It needs no tuner on 40m, 20m and 10m. Furthermore, none of these designs offered 30 m. The windom antenna can also be hung as a. 7 m werden in de zestiger jaren door Fritzel in zijn antennes toegepast. isolators. The half-size version is known as the FD3 40-20-10m antenna. University merilis tulisan tentang cara menala half -wave antenna dengan pengumpanan lewat single wire ini. University merilis tulisan tentang cara menala half -wave antenna dengan pengumpanan lewat single wire ini. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. Item number # 425fd41503. Vertical antennas made of steel wire, monoband or multiband, with balun and radials. The asymmetrical dipole antenna developed and described by Windom (W8GZ) in 1929 has been used by many amateurs for many years as the FD4. The Fritzel FD4 antenna becomes more popular in Europe and N. The end-fed energy is less than the center-fed. It had the same dimensions as the VS1AA multiband Windom antenna, but fitted with a 300Ω balun in its feedpoint and fed over coax. The Fritzel FD4 antenna becomes more popular in Europe and N. Bonnes bandes passantes en général ,elle est trés efficace en DX et surpasse toute mes autres antennes FB13-FD4-W3EDP de 1 à 2 points S. 73 to allWINDOM ANTENNA. 202 - Two Elements Phased Delta Loop for 40m. FT-7's PB-1631 B was modified according to FT-7B's PB-1631 D. The 7-band antennas need at least 120 feet of ground space end-to-end. FD4 Antenna switched as T-Antenna, Datong Konverter up to 28 MHz, Kenwood TS 480 for receive, using CW. 0000 151. I am new to shortwave radio and just thought I'd share my experiences in starting with this hobby. Above, Straw's diagram of the Carolina Windom. Belakangan, karena di feed di titik yang melèncèng dari tengah bentangan antenna (OFF-center) seperti yang kemudian umum dilakukan, maka rancangan ante nna macam ini lantas disebut sebagai off-center fed atau OCF antenna. 0 Extras: Using the Editor to Customize Your Transceiver. For the PAL8010OCF, the impedance is very well behaved in a limited, easy to match range throughout the 1-54 MHz range and, in fact, that antenna also works very. Rated 5 out of 5 stars. You have tried to build an FD4 antenna which is no bad solution at all. Dari sinilah lantas lahir legenda yang menyebutkan antenna Windom sebagai antenna lembah atau antenna bantaran kali, seperti yang di tanah air di”wakili” oleh transmisi gahar dari OMThe Inverted-Vee tends to be more omni-directional and radiate equally in all directions. Unlike the endogenous expression of the fd4/fd5 genes, the C element is not restricted to the ventral imaginal discs (legs and antenna), as activity of this CRM is also observed in the wing disc. 6 dB less power than the center-fed. 1971 - Dr. 0 29. I recently purchased the 5KW FD4 from an MWF-SERVICE. If the installation site permits, a dipole antenna in a vertical "Vee" configuration has radiation patterns suitable for NVIS applications -- and can have useful low-angle radiation, as well. 2. Windom antennas for shortwave, with 1:6 balun and isolators, 200 or 1000 W. As low as: €75. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. Furthermore, none of these designs offered 30 m. Installation de l'antenne filaire FD4 de chez Fritzel sur un pylône de 6 mètres en V inversé la rendant omnidirectionnelle. The FD4 (FD3) Windom Antenna The 4-band Fritzel model FD4 is a special version of a Windom antenna. 7-m in the. com Hex Beam Base Plates, Mastrant. 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. WINDOM. Which seem the wrong type of connector to me. More recently, as described in an Appendix to a detailed discussion of Windom-type antennas 'The off-centre-fed dipole revisited: a broad-band, multiband antenna' by Dr John Belrose, VE2CV, and Peter Bouliane, VE3KLO (OST, What became perhaps the most popular multiband Windom design of all, was the German-made Fritzel FD4 antenna, described by the late Dr. A 1 ÷ 6 auto transformer matched the antenna to the 60-On one occasion when the steward helped Vasek put his luggage up in the board case, she strictly refused the suitcase above any person and Vasek had to move with it the tail of the aircraft. Svar til #1: Velkommen tilbage til denne fantastiske hobby. vy good fr emcomm. Don't hesitate - contact us. 8 m en 27. Great Multiband Antenna Time Owned: more than 12 months. 1971 300 Ω 41. 00. 5m (15 foot) mast of about 5cm (2 inch) diameter, that also serves as the outside of a low-loss coax feedline. . Npr. The 4-band Fritzel model FD4 is a special version of a Windom antenna. But it was over water, the villa pool hi. At this moment, though, I don't remember if I used WSPR or FT8 to test with. The half-size version is known as the FD3 40-20-10m antenna. But you can always drive out to a far away place, set up an. I have connected the N connector to a tuned antenna in my yard and then received that signal via another antenna to my ic-7610 and was able to decode it okay. Belakangan, karena di feed di titik yang melèncèng dari tengah bentangan antenna (OFF-center) seperti yang kemudian umum dilakukan, maka rancangan ante nna macam ini lantas disebut sebagai off-center fed atau OCF antenna. The AS-2259 consists of a pair of crossed dipoles on a common feedpoint. A shorter version FD3 for 40-10m operation is also developed. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. 5m and 2. Fritz Spillner1, DJ2KY, in 1971. Website of Fritzel antennas ?? 8. And they seem quite slack . 6-Band Windom antenna - Theory and construction of a novel trapless center-loaded off-center-f. The dimensions were the same as the multi-band Windom antenna, but fitted with a 200Ω (4:1) balun at its feed point and fed with 50 ohm coax at lower heights above the ground.