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. 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. The dual dipole wires do the job of providing guying support for the mast. Other projects I would like to to : Build me a G7FEK antenna; Build a end fed half wave 20m vertical. The resource is currently listed in dxzone. About HF Linked Dipole Antenna Calculator. Recent DX Spots 6O0X He is using 100 watt HF Transceiver and FD4 antenna. America. Very close to the 300 Ohm impedance of a Windom antenna such as the system used in Fritzel's FD3 and FD4 antennas. The MMANA-GAL model’s data comma-separated variables (CSV) file is plotted as MS-Excel graph between. See physical description below. Installation de l'antenne filaire FD4 de chez Fritzel sur un pylône de 6 mètres en V inversé la rendant omnidirectionnelle. . Great Multiband Antenna Time Owned: more than 12 months. Rengeteg volt az autó és az ember. (35' on 75M. Operating HamSphere 4. if you want to rate The FD4 (FD3) Windom Antenna use this special. 3 m dia loop and E field antenna, 2. FD4 antenna, lent a kábel végén mérve. 203 - Three Elements Wire Yagi for 10m. 6625 114 DCS Clovis PD7 Public Works . I…However although the antenna wires are strain relieved at the Balun. 7-m in the. HamSphere 4. Hi all, I bought the Mini1300 from China and Software says Version1. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. > I also know about the 6:1 balun but am looking for some info on the > overall length and the point of fed also the angle and height of the > ends of the antenna above ground. So I checked the frequency and had to adjust it (27MHz calibration)3/20/20 #435. Although thousands of “hams” use and love these multi-band antennas, especially here in Europe, it seems just as many people, including several well-known antenna experts, view it. 5-70. FD4 Antenna switched as T-Antenna, Datong Konverter up to 28 MHz, Kenwood TS 480 for receive, using CW. Fritz Spillner, DJ2KY, in 1971[1]. Hi all, I bought the Mini1300 from China and Software says Version1. 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. 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. By serendipity, it also covers the 17 and 2 meter bands. America. Fritzel FD4 antenna, described by the late Dr. com in a single category. A kitelepülés során esténként mindig rádióztunk több-kevesebb sikerrel. The resource is currently listed in dxzone. WINDOM. com Hex Beam Base Plates, Mastrant. Furthermore, none of these designs offered 30 m. . Fritzel Antenna Source? 9. 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. 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 . com in 3 categories. Posted on 23 July 2012. The AS-2259 consists of a pair of crossed dipoles on a common feedpoint. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. Good contest with many stations. For a monoband antenna, connect the. SWR is actually better with 300-ohm transmitting line than with the 450 ohm line normally used. VSWR performance is worse only on 17m and slightly on 40m. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. be. , Corvallis, OR . The performance characteristics are quite outstanding. com and TCSWAT web page. 2. To: n4ujw@hamuniverse. 2023-10-25. ic7800 @ 100w microkeyer ii - heil proset elite - cushcraft r6000 and fd4 antennas - n1mm logger. This encompasses not only long-wire antennas, but also the classic dipole. VU2NSB OmniDX antenna (11m) VU2NSB OmniDX Antenna series is a very s. . This link is listed in our web site directory since Tuesday Jul 22 2008, and till today "The FD4 Windom antenna" has been followed for a total of 3736 times. 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. Fritz Spillner1, DJ2KY, in 1971. Both of these proved toA special form of a Windom antenna is a FD4 from Fritzel. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk. 3 MHz. 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. 3 dB gain, incl. Configure & Download. 5. 204 - Low Radiation Angle Full-Wave Loop Antenna for 80m. So here at my home there is also room for improvement. 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. Vy. 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. Fritzel used the shown dimensions of 13. I just checked my EU1KY Analyzer on the spectrum analyzer. On 40m, 20m and 10m it works nicely, as one would expect for this type of antenna. The asymmetrical dipole antenna developed and described by Windom (W8GZ) in 1929 has been used by many amateurs for many years as the FD4. post 24 Dec 2021. 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. com Home Mapsite Add Link. You have tried to build an FD4 antenna which is no bad solution at all. Website of Fritzel antennas ?? 8. Also: Someone asked if there was any usefulness of FT8. isolators. The main category is Dipole antenna that is about Dipole antennas plans. FD4's are by wide ranges. Fritzel used the shown dimensions of 13. 3. 11a band is. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. 203 - Three Elements Wire Yagi for 10m. So here at my home there is also room for improvement. En FD4 er en glimrende antenne, opsat inverted vil du opnå en lavere udstrålingsvinkel, altså bedre til DX. #1 Trademark Search and Registration Service :: TUNNEL VOICE FD4 is a trademark and brand of Tunnel Radio of America, Inc. I have it mounted flattop up about 45 feet. See you again, friends . Allows you to more easily get the antenna up high and outside. 0, but I wonder how to send WSPR or FT8. Vous connaissez les FD4/FD3 ? vous connaissez les loop ? vous connaissez les halo ? je vous propose sur une idée de G8ODE , dérivé de l'antenne "Cola" l'antenne "OLA" pour Open Loop Antenna (feed off center) une FD4/FD3 a une impédance de l'ordre de 200/300 ohms , si cette antenne est replié en triangle ou carré son impédance descends. 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. It will match on even and odd harmonics - but it requires a complex balun at the feedpoint. Alpha Antenna 2-20M Portable Vertical Antenna for VHF & HF. 800 Watt FD4 multi-band antenna with 1:4 super balun Project for a multi-band antenna for the 80, 40, 20, 17, 12, 10 and 6 meter bands, including a 1:4 impedance transformer and. A shorter version FD3 for 40-10m operation is also developed. The FD-4 is still made with outstanding quality of materials. vy good fr emcomm. The end-fed energy is less than the center-fed. • Radioddity's limited warranty applies to all BRAND NEW items sold by radioddity. 6m directional antennas with 5, 6 or 7 elements, 1 kW. 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. DJ2KY di tahun 1971dan diproduksi secara komersiil dengan nama Fritzel FD4 antenna. Add to Cart Details. 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. Add To Cart. Even if I had the space to put up an HF antenna where I live, the noise floor being a constant S9+20 would make actually using it quite difficult. Délután 4-re már állt az FD4 antenna és az azt tartó pecabot. With the RigExpert antenna analyzers, the process of tuning directional antenna is simple and easy. QSL via his home call. 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. New Carolina windom antenna - PDF file by QRP Expressions by By N. 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. The antenna consists of asymmetrical length horizontal. 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. HamSphere 4. The 4-band Fritzel model FD4 is a special version of a Windom antenna. 00. 73, Ray K1XV . My antennas - Hrvatski Radioamaterski Savez FD4 - Windom antenna | MyHam. At present some Czech amateurs call it "PA0FRI" antenna. The Windom - Off Centre Fed Half Wave Dipole Antenna. 4+4. Please select a product. click here to follow the link to The FD4 (FD3) Windom Antenna. FD4's are by wide ranges. He will be active for the next three years from the Slovak Ambassy in Baghdad. Observations: Both the end-fed and center-fed antennas operate just fine without any additional conductors or feedlines. Displaying 1 to 8 (of 8 products) Result Pages: 1. FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. I did follow the instructions and entered my Call and Locator, selected port S1 and connected FD4 antenna but nobody does receive me. University merilis tulisan tentang cara menala half -wave antenna dengan pengumpanan lewat single wire ini. Do long wires work better than say a standard half wave or quarter wave antenna?Ask an Elmer discusses this very interesting question by one of our viewers. North America. 110/220 Volts. az FD4-emnél is szarabb. (5) Alpha Antenna HOA Buster for 10-80 meters. Item number # 425fd41503. , using a shorted stub to act as an automatic switch for various bands. The Fritzel FD4 antenna becomes more popular in Europe and N. Watch on. 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. FD4 antenna, fent mérve a kábelhossz beszámításával. 0: Using (but not overusing) DX Spotting and Making Manual. HamSphere 4. 75 MHz. Today’s versions, based on the original Windom, include the common OCF and Carolina Windom. 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. Add to Cart. Fritz Spillner, DJ2KY, in 1971[1]. A Portable NVIS Antenna is QRP-Friendly. OZ0RF. The wire tails connecting to the Balun Bolts are just ordinary Philips Spades. and "bout 15 MHz if matching is SWR Window on the following antenna 'g Of 41. Fritzel used the shown dimensions of 13. Watch on. This was a good destruction from my dentistry study on the weekend. I did follow the instructions and entered my Call and Locator, selected port S1 and connected FD4 antenna adding two wires to the basic FD4, 4. America. Add to Cart Details. incl. > To: <ARRL-LOTW@. A shorter version FD3 for 40-10m operation is also developed. So far received 9. pc is a toughbook cf19 wx is quit good,strong winds, 9 xxxx & yyyy are the names of the two participants. Rest assured, both problems are dealt with by the CL-OCFD, also list-ed at the bottom of Table 1. The antenna can be employed on 80, 40, 20 and 10m with considerable, though acceptable levels of VSWR. SWR is actually better with 300-ohm transmitting line than with the 450 ohm line normally used. While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands. Can someone point me to or post the latest Olivia Dial frequencies with 1500 offset? Everywhere I look, I see something different. The Windom - Off Centre Fed Half Wave Dipole Antenna. COM in Germany because the exchange rate for euros was low. He will operate on 40, 30, 20m, including activity in CQ WW WPX CW Contest. 6. t to. In any case, tuning wire antennas to resonance using RigExpert AA-35 ZOOM and AA-55 ZOOM will guarantee the optimum antenna performance. It had the same dimensions as the VS1AA multiband Windom antenna, but fitted with a 300Ω balun at its feed point and-fed over coax. My HF Antenna Fritzel FD-3. Since it is resonant on multiple bands the signal level at the receiver is high. is the designer and trade mark holder, and primary source for Bury-Flex Tm low loss coax cable. The Fritzel FD4 antenna becomes more popular in Europe and N. The wire antenna is the classic amateur radio antenna. adding two wires to the basic FD4, 4. A shorter version FD3 for 40-10m operation is also developed. DJ2KY di tahun 1971dan diproduksi secara komersiil dengan nama Fritzel FD4 antenna. 0: We discuss Antennas, DX'ing, Calling CQ, and other Topics. Fritz Spillner, DJ2KY, in 1971. The renowned “FD4” antenna was not an exception; Have a look at its VSWR specification on pages 13 and 14 of this brochure. 3V microcontroller or a 5V microcontroller but it should have an SPI port. The original Windom antenna (devised in ), named after Loren Windom, W8GZ. Len Carlson, K4IWL. VAT, plus shipping €63. Spillner (DJ2KY) that this antenna, with the addition of a small one-band Windom for 15 m, can. 00. Mange kortbølgeamatører har glæde af en FD4. 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. . Antenna Part#: PAL-OCF1606 OCF antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna which is fed off center. 50 m 32. WINDOM. The plot shows the current distribution on a 42 m long FD4 Windom antenna for the frequencies 80, 40, 20, 17 and 10 m. Rated 5 out of 5 stars. 8 - An antenna system for 7, 14 and 21 Mc. 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. 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. Hi all, I bought the Mini1300 from China and Software says Version1. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. I did follow the instructions and entered my Call and Locator, selected port S1 and connected FD4 antenna. Az első napon a városban Vadászati és Halászati kiállítás volt. Regardless of how high the antenna is, a roof, especially a metal roof, will have a negative effect on the antenna pattern if the. hofi de) . A weekend with good DX in morse After the frustration with Uganda in morse I switched to chasing different countries and propagation was good in the weekend. 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. I asked my landlord for the possibility to fix one end of it on his house. This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom. The Off-Center-Fed-Dipole – also called a “Windom” by many companies selling them – has a somewhat blemished reputation amongst amateur radio operators. 7-m in the 1960s. The Fritzel FD4 antenna is a classical antenna in our series of HS4 Legendary Multiband Wire Antennas. Topic: Dipol - FD3 - FD4 (Read 3108 times) 0 Members and 1 Guest are viewing this topic. After the wall came down I got my own station with an old FT-277B with FD4 antenna. until the next time frans pa3cgj: pa6nd102' G5RV standard length antenna with 34' of 3/4" ladder line and a RG8 12" dia, 10 turn coaxial choke, feed by RG8 coax. pc is a toughbook cf19 wx is quit good,strong winds, 9 xxxx & yyyy are the names of the two participants. MHz 4. A kada ima problema sa napajanjem, onda su problemi sa komšijama verovatni . America. FS: Fritzel FD4 antenna. also works on the 80 and 160 meter band. Fritzel used the shown dimensions of 13. The renowned “FD4” antenna was not an exception; Have a look at its VSWR specification on pages 13 and 14 of this brochure. The Fritzel FD4 antenna becomes more popular in Europe and N. KEY 1. For the PAL-OCF8010 with 250 feet of RG213 feed line and an average height of 30 feet: Palomar Engineers PAL-OCF8010 Antenna manual 05242021 29. I'm just afraid that if we install a PayPal box at the LoTW page, paying can become mandatory before QSL-ing. foot mast. The Fritzel FD4 antenna becomes more popular in Europe and N. About How to construct a multi-band dipole using speaker wire The resource is currently listed in dxzone. The system has an impedance of 70 - 100 Ohm and for connection. The asymmetrical arrangement of the dipole results in very favourable installation possibilities in some situations. Regardless of how high the antenna is, a roof, especially a metal roof, will have a negative effect on the antenna pattern if the roof is 1/8 wavelength away or closer. The Fritzel FD-4 was designed by. The half-size version is known as the FD3 40-20-10m antenna. The. ASUS AX3000 Dual Band PCI-E WiFi 6 (802. This antenna was developed in Germany, although others likely advanced it also. 7 m werden in de zestiger jaren door Fritzel in zijn antennes toegepast. 201 - FD4 Windom Antenna for 80m, 40m, 20m, 10m. 0 Extras: Using the Editor to Customize Your Transceiver. and "bout 15 MHz if matching is SWR Window on the following. The dipoles are cut for roughly 6. 8-m and 27. 200 - Inverted-V Beam Antenna for 30m. 4-5 meter. WINDOM. The output looks a bit “interesting” and it could probably use a Band Pass Filter, but the signal is in fact there. 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. 26 Inch High Gain Antenna (Original Baofeng GT-3/GT-3TP Antenna) 1 Year and 6 months Manufacturer's Warranty. This link is listed in our web site directory since Thursday Jun 23 2016, and till today " HF Linked Dipole Antenna Calculator " has been followed for a total of 1468. One should use an extra 1 ÷ 1 balun or choke balun to prevent radiation of the coax screen. com in 2 categories. 6O6X. vy good fr emcomm. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. In addition to the wire antennas, in Europe they sell a line of yagis and verticals, and are well respected. 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. FS: Fritzel Windom Type antenna. 2. BEST COMPACT: Antennas Direct ClearStream 4V Long-Range TV Antenna. Furthermore, none of these designs offered 30 m. Both of these proved toKite-borne FD4 antenna as designed for winds of 11 — 15 knots. 2004-02-19. Multiband FD-4 Windom antena. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. If anyone has experience, poradte. com in 2 categories. Add to Cart. WINDOM. 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. The Fritzel FD4 antenna becomes more popular in Europe and N. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer. 0 Extras: Using the Editor to Customize Your Transceiver. Signal war mit etwa 15db über dem Rauschen deutlich zu. foot mast. 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 half-size version of the FD4 is known as the FD3 (40,20,10m) and is the subject of this article. The main category is Dipole antenna that is about Dipole antennas plans. I myself am working with a simple FD4 Antenna. 7-m in the 1960s. All groups and messages. com in a single category. America. If you do the math, it emits about 1. The main category is Dipole antenna that is about Dipole antennas plans. It is my back-up HF antenna, and one that can be used on 40 meter round table rag chews where a beam may not be ideal. My dipoles and long wires had so much noise that I hardly ever would listen to HF. Yeasun FT 857 D. 5-8800 MHz) CHARACTERISTICSname xxx qth winterthur near zurich this is my first qso on js8, funny . The Windom - Off Centre Fed Half Wave Dipole Antenna. By 1937 the Windom was described “as multi-band antenna that can be employed on harmonically related 160, 80, 40, 20 and 10m bands with acceptable levels of VSWR”. antenna. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. 5 PL Clovis FD3 Fire 3They are monoband or multiband like Frietzel FD4. The complete details on how to use the module through SPI is given the data sheet below. “FD4” 4. In Stock. NOTE: In my oldest Fritzel Catalogue 1970/71 the 4 cm diameter traps of the (<1983) antennas FB-13 FB-23 FB-33 were only suitable for an PA-input: 1 kW AM / CW and 2 kW. 5 mtr RG-58 panjang sebarang ke TX atau ATU 27 mtr Balun 1:6 Di Eropa, rancangan Multiband Windom dengan coax sebagai feeder line yang menonjol adalah rancangan yang dikembangkan oleh Dr. > antenna is no longer made. Name: Fritzel FD4 HAM radio antenna. Vertical antennas made of steel wire, monoband or multiband, with balun and radials. FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. antenna systems are easily carried and installed by two people in less than 15 minutes. On higher bands it did not work well. name xxx qth winterthur near zurich this is my first qso on js8, funny . 204 - Low Radiation Angle Full-Wave Loop Antenna for 80m. 0, but I wonder how to send WSPR or FT8. This split allows the OCFD to be operated as a 4 band antenna as the SWR on the 40m band is less than 3. 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. Contact. Due to the small layout of the estate the other end should best be fixed on a rope going to some other house or one of the surrounding flag poles (flag poles are quite common in. The FD4 Windom. 6. Visit my web site: OCF FD4 (FD3) WINDOM ANTENNA. The G5RV has a reasonable SWR on 80, 40, 20, 15, and 12 meters. This link is listed in our web site directory since Sunday Jul 29 2007, and till today "Windom Antenna with 4:1 balun" has been followed for a total of 8010 times. 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 theory of the. While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands. 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. America. At least the antenna seems working during the February NAC 23cm contest. The FD4 (FD3) Windom Antenna. S. The main category is Windom antenna that is about Windom antenna links. Ashok Use your search engine to find 'FD3 antenna' and 'FD4 antenna' - I see many hits. Note the circled area at 1/3 length - this is where the impedance is about the same for all these bands. University merilis tulisan tentang cara menala half -wave antenna dengan pengumpanan lewat single wire ini. The Fritzel FD4 antenna becomes more popular in Europe and N. « u: 31. But since the most common and simple design is a trx-coaxial antenna, let’s talk about such an antenna design . De opgegeven maten gelden voor geïsoleerd draad. Just need an antenna. 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. For best results with this type of antenna, the Apex Angle should be kept between 70 and 110 Degrees . So I thought forget about UHF/VHF here, better do shortwave and install a little FD4 antenna. The Fritzel FD4 antenna becomes more popular in Europe and N. 6-Band Windom antenna - Theory and construction of a novel trapless center-loaded off-center-f. Hi all, I bought the Mini1300 from China and Software says Version1. At this moment I have to spend my money in a "better" way. Fritzel used the shown dimensions of 13. As at the way things are now all that will happen is Olivia will get a number of FT8 stations annoyed. 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. Fritzel Antenna Source? 7. e. By the end of the 70's interest in the Windom ----- Original Message ----- From: "Gerry Hohn" <telwest@. Tether for side kites 7. Please select a product. It is a long half wave on the lowest frequency and is powered by a coaxial cable through a. . 10-20m bands suck at the moment all day every day, 40-80m work good in the afternoon and 80+40m at evening here in europe.