I…However although the antenna wires are strain relieved at the Balun. 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. 203 - Three Elements Wire Yagi for 10m. Hari Delta Loop antenna for horizontal or vertical suspension, max. Antenna short 25ft off centre dipole OCD tied to balcony rail 15 feet high sloping down to 8 feet into hibicus bush. The base sat on the tile floor. Furthermore, none of these designs offered 30 m. 8 m long 300 Ohm ribbon line. pc is a toughbook cf19 wx is quit good,strong winds, 9 xxxx & yyyy are the names of the two participants. 8-m and 27. Entered for fun between tourist trips to beach with XYL and other things one has to do on holi-day. 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. 80,40,20,17,12,10m Seperate parts for balun, isolator, wires. The output looks a bit “interesting” and it could probably use a Band Pass Filter, but the signal is in fact there. , using a shorted stub to act as an automatic switch for various bands. > Sent: Thursday, November 04, 2004 7:05 PM Subject: Re: [ARRL-LOTW] DXpedition Support Put together a quick shortwave antenna using just a few pieces of electrical fencing supplies. I did follow the instructions and entered my Call and Locator, selected port S1 and connected FD4 antenna. For a monoband antenna, connect the. See physical description below. 0: We discuss Antennas, DX'ing, Calling CQ, and other Topics. About HF Linked Dipole Antenna Calculator. Fritzel used the shown dimensions of 13. 206 - X-Ray Monoband Antenna Gain=6. America. It comes complete with a 1:6 balun with SO-239 connector. It had the same dimensions as the VS1AA multiband Windom antenna, but fitted with a 300Ω balun in its feedpoint and fed over coax. Fritzel antenna manufacturer address. Perhaps the most popular multi-band “Windom” or more accurately, OCFD was the German-made Fritzel FD4 antenna, described by the late Dr. The antenna was designed for military use from 2 to 10 MHz (some references say 2 to 30 MHz). In stock, shipped in 1 to 2 days. 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. As low as: €240. There is an amateur antenna out there consisting of an 80-meter dipole (I mean one that is a half wave at 80 meters, not one physically 80 meters long) fed with about 100 feet of 450 ohm ladder line. Produce baluns, delta loops, dipoles, ocf antennas and more. 201 - FD4 Windom Antenna for 80m, 40m, 20m, 10m. 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. The main category is Dipole antenna that is about Dipole antennas plans. 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. 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. QSL via DJ6SI. Fritz Spillner, DJ2KY, in 1971[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. OK1BA. 205 - Collinear Antenna Gain=3dB for 2m. com and other authorized dealers (except Xiegu). . com. Posted on 23 July 2012. 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. FD4S-B288S00JDB2. 26 Inch High Gain Antenna (Original Baofeng GT-3/GT-3TP Antenna) 1 Year and 6 months Manufacturer's Warranty. On 40m, 20m and 10m it works nicely, as one would expect for this type of antenna. And the length of the legs must match. (35' on 75M. Regardless of how high the antenna is, a roof, especially a metal roof, will have a negative effect on the antenna pattern if the. A design for Ka-band satellite communication antenna in earth station is introduced. 5m. But since the most common and simple design is a trx-coaxial antenna, let’s talk about such an antenna design . The R-7000 is a good antenna as far as verticals go, but it needs. 1. As at the way things are now all that will happen is Olivia will get a number of FT8 stations annoyed. . Fritzel used the shown dimensions of 13. Comes with an ante. New Carolina windom antenna - PDF file by QRP Expressions by By N. Modified: 11/26/2021. The FD4 (FD3) Windom Antenna. Fritzel Antenna Source? 9. Also, why every house should have an emergency way of listeni. Fritzel used the shown dimensions of 13. 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. 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. 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. Above, Straw's diagram of the Carolina Windom. It was designed to cover 80, 40, 20 15, and 10 meters. 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. The 7-band antennas need at least 120 feet of ground space end-to-end. Sark100 antenna analizátor. I'm using homebrew Windom-Antenna recently. Added: 07/18/2019. MFJ 1779A 160M Dipole Antennas MFJ-1779A. 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. A shorter version FD3 for 40-10m operation is also developed. Antena ta zostałą opracowana na użytek wojska przez United States Navy pod koniec lat 40-tych. 5dBdThe FD4 (FD3) Windom Antenna - The 4-band Fritzel model FD4 is a special version of a Windom antenna. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. Hi all, I bought the Mini1300 from China and Software says Version1. H. 80,40,20,17,12,10m Seperate parts for balun, isolator, wires. The Fritzel FD4 antenna becomes more popular in Europe and N. 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. 249. Once you download and install this software you will get a basic working transceiver for a trial period. It covers 7 bands, 10-12-15-17-20. About The FD4 Windom antenna The resource is currently listed in dxzone. 3. VAT, plus shipping €201. 00 €. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. The Windom - Off Centre Fed Half Wave Dipole Antenna. This is still the most popular shortwave antenna, whether in amateur radio, for the military, public services or commercial users. Its main advantage was that it could easily be matched to a tube transmitter. I still young so I thinks this is normal, didn't we all start small. 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. > To: <ARRL-LOTW@. 5m (15 foot) mast of about 5cm (2 inch) diameter, that also serves as the outside of a low-loss coax feedline. Now, how was a Windom antenna developed? It began with a center-fed, half-wave dipole. 6 dB less power than the center-fed. This video provides background on what many of us believe to be the greatest off-center-fed dipole antenna ever created. 8 - An antenna system for 7, 14 and 21 Mc. About Windom Antenna with 4:1 balun The resource is currently listed in dxzone. FD4's are by wide ranges. The Fritzel FD-4 was designed by He. 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. 1971 - Dr. 00 €. The FD4 (FD3) Windom Antenna. 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 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. 26 Inch High Gain Antenna (Original Baofeng GT-3/GT-3TP Antenna) 1 Year and 6 months Manufacturer's Warranty. WINDOM. vy good fr emcomm. com in 2 categories. 7-m in the 1960s. This split allows the OCFD to be operated as a 4 band antenna as the SWR on the 40m band is less than 3. Ona je dugačka pola valne duljune L. 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. 5-8800 MHz) CHARACTERISTICSname xxx qth winterthur near zurich this is my first qso on js8, funny . Below 70 Degrees the radiators start to become parallel to each other and signal canceling will start to occur. > 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. that's not what I'm trying to explain. > 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. What we know. While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands. Since it is not possible during the local conditions (small premises with a central standing family house in a suburban area) to have a single tower with a big beam I was beginning to watch out for a more suitable (more "compact") antenna. This ATU, I call my design FRI-Match, has been devised in 1972 as an unbalanced tuner for improving the SWR at the transmitter end of coaxial feeders to resonant antennas (eg verticals, dipoles, trapped dipoles, G5RVs, Yagis, loopquads etc. 03. 0, but I wonder how to send WSPR or FT8. Fritz Spillner1, DJ2KY, in 1971. This can overload the receiver, especially on 40 m here in Europe, with a lot of broadcast stations. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer. FD4 Antenna switched as T-Antenna, Datong Konverter up to 28 MHz, Kenwood TS 480 for receive, using CW. Spillner (DJ2KY) that this antenna, with the addition of a small one-band Windom for 15 m, can be used. 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”. 5 and 28 Mhz. 4+4. This result suggests that sequences outside the C and GMR35H08 elements restrict fd4/fd5 expression to the ventral imaginal discs. 7,853 4 17 50. North America. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. • Radioddity's limited warranty applies to all BRAND NEW items sold by radioddity. Len Carlson, K4IWL. Side kites lifting antenna ends 5. Fritz Spillner, DJ2KY, in 1971. com in 3 categories. vy good fr emcomm. 6625 114 DCS Clovis PD7 Public Works . 7 m werden in de zestiger jaren door Fritzel in zijn antennes toegepast. 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. Npr. Dipol - FD3 - FD4 (1/1) TA4AU: Hi All. The Fritzel FD4 antenna becomes more popular in Europe and N. 6 288 29. America. The Fritzel FD4 antenna becomes more popular in Europe and N. 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. During his spare time from the contest he will try to work some PSK31, especially on 30m band. ). 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. The half-size version is known as the FD3 40-20-10m antenna. e. 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. 0000 151. . Though works on the other bands with an ATU. The problem is, that I have land in the valley, or rather only in such a valley, but I can't get over the hills even with a pole. EN. 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 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. until the next time frans pa3cgj: pa6nd 102' G5RV standard length antenna with 34' of 3/4" ladder line and a RG8 12" dia, 10 turn coaxial choke, feed by RG8 coax. New Carolina windom antenna - PDF file by QRP Expressions by By N. 154. g. It will match on even and odd harmonics - but it. Top. The wire tails connecting to the Balun Bolts are just ordinary Philips Spades. but it was nice to meet you. De opgegeven maten gelden voor geïsoleerd draad. 50 m 32. 3V microcontroller or a 5V microcontroller but it should have an SPI port. Hari Delta Loop antenna for horizontal or vertical suspension, max. on air on 17 meters ,with 30 watts and fd4 antenna. 52m long ( TT, October 1972 and ART): Fig 5. I myself am working with a simple FD4 Antenna. The G5RV has a reasonable SWR on 80, 40, 20, 15, and 12 meters. At this moment I have to spend my money in a "better" way. Description: Fritzel FD4 HAM radio multyband HF antenna. COM in Germany because the exchange rate for euros was low. 65m+17. A shorter version FD3 for 40-10m operation is also developed. KEY 1. Fritzel FD4 OCF Dipole The Frizel FD4 Windom is an OCF (Off Centre Fed) antenna that has been around for a long time. 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 performance characteristics are quite outstanding. TA4AU. The renowned “FD4” antenna was not an exception; Have a look at its VSWR specification on pages 13 and 14 of this brochure. My dipoles and long wires had so much noise that I hardly ever would listen to HF. Zmierzyłem się w końcu z demonizowaną przez wszystkich anteną T2FD, ale zacznijmy od początku. DX Code Of Conduct. 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. 7-m in the. pc is a toughbook cf19 wx is quit good,strong winds, 9 xxxx & yyyy are the names of the two participants. I built it using 3/4 inch copper pipe with rg-8 running up the center. The photos of the FD4 in web adverts show Eyelets. egy egysávos antenna lenne és az Ohmos összetevő 50 Ohm környékén lenne akkor ha induktív reaktanciát mérünk, akkor egy azzal egyenértékű reaktív. 00. 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. Great multi-band antenna, I have the FD-4 Fritzel this is the only antenna that I have and it allows me to work 80/40/20/17/12/10 and I use it on 15 and 60 meters with the internal tuner in my 940. It may cost a little more, but the Winegard Elite 7550 pays dividends, delivering a whopping 73. 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. 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. 9 - A possible 40-meter beam arrangement using quarter-wave folded elements. 5; 7; 14; 18; 28 MHz-en. 1971 - Dr. 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. Latin America. 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. 205 - Collinear Antenna Gain=3dB for 2m. incl. The Fritzel FD4 antenna is a classical antenna in our series of HS4 Legendary Multiband Wire Antennas. 0, but I wonder how to send WSPR or FT8. It is still available from They continue the Fritzel antenna business. Antennas such as G5RV with balun, W3DZZ, FD3 and FD4, trap verticals and Yagis can be easily adjusted with a FRI Match. The main category is Windom antenna that is about Windom antenna links. Add to Cart Details. *Note: The FD4 Windom is a 300Ω balun-fed antenna with lres = 41. The garden is about 6 by 30m, just big enough to fit a FD4 antenna. 2. The Windom - Off Centre Fed Half Wave Dipole Antenna. 55 m dipole fed with a 8. It was intended to be used on one frequency only. Name: Fritzel FD4 HAM radio antenna. 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. . In this study, a compact 2 × 2 circularly polarized (CP) sequentially rotated (SR) dielectric resonator antenna (DRA) array operating in the IEEE 802. Hi all, I bought the Mini1300 from China and Software says Version1. 7-m in the 1960s. 0, but I wonder how to send WSPR or FT8. Fritz Spillner, DJ2KY, in 1971. If the insulator has been exposed to our climate for some time, the resin "evaporates" on the surface. The plot shows the current distribution on a 42 m long FD4 Windom antenna for the frequencies 80, 40, 20, 17 and 10 m. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. The theory of the. The antenna was designed for military use from 2 to 10 MHz (some references say 2 to 30 MHz). Baldur Drobnica will be active from Hargeisa, Somalia until 6 June 2018, as 6O0X. Rated 5 out of 5 stars. The Fritzel FD4 antenna becomes more popular in Europe and N. Fritzel FD4 antenna, described by the late Dr. :: OK-OM DX Contest - rigs 2000 ::. incl. NVIS Antenna Strategy • Portable and field antennas will be less efficient due to space, height and setup time • “Command post” or “Net Control” antenna should be as efficient as possible • Gains of up to 6 dB (i. FD4 (80/40/20/10 m) Een bijzondere vorm van een Windom antenne is een FD4 van Fritzel. FD3 and FD4, trap. Unlike typical antennas, this is a non-resonant, Off Center Fed Dipole (OCFD) antenna. 6-Band Windom antenna - Theory and construction of a novel trapless center-loaded off-center-f. 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. 0 Extras: Using the Editor to Customize Your Transceiver. 1971 - Dr. New. I hope you enjoy this video and find it helpful. « u: 31. Add a comment. If anyone has experience, poradte. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. Perhaps the most popular multi-band “Windom” or more accurately, OCFD was the German-made Fritzel FD4 antenna, described by the late Dr. This version only includes the fsgame ltx download DirectX libraries and shaders. Versi Dr. I use a FD4 Antenna, a Datong convewrter and my TS480 to listen for SAQ today morniung and just before. 0, but I wonder how to send WSPR or FT8. Most tuners would work better if the balun passed the line impedance through without stepping impedance down. In addition, an R6000 has two separate traps for 12 and 17 m, while the 10 and 15 m traps of a. For a while now I used a 56 meter (184 foot) long horizontal loop, hung up in our back yard. RST 579. az FD4-emnél is szarabb. Recent DX Spots 6O0X He is using 100 watt HF Transceiver and FD4 antenna. com and TCSWAT web page. Whereas the FD4 being really an 80 metre dipole has lots of lobes and becomes almost. Bit easy compare with logging QSO on the higher bands. Both of these proved toNear vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path that provides usable signals in the medium distances range — usually 0–650 km (0–400 miles). The graphic below shows its performance on the 40/80/160m bands for the conditions shown there. This became known as the Fritzel FD4 (80, 40,20,10m) but is more correctly described as the Off Center Fed Dipole (OCFD). It kind of works for 160, 80 and 40 meter. 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. 8 PL Clovis PD1 Police Dispatch. Svar til #1: Velkommen tilbage til denne fantastiske hobby. Mike has with him two transceivers: TS-850SAT and IC-706. 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. Nylon antenna extensions 9. Also called "OCF", Off Center Fed dipole. Modified: 11/26/2021. 7 MHz. Je li netko možda stavljao napajanje na neko drugo mjesto jer sam na internetu našao i drugačije omjere. The half-size version is known as the FD3 40-20-10m antenna. EN. At a first glance, the antenna looks like an Off-Center-Fed Dipole (OCFD). Fritz Spillner, DJ2KY, in 1971. The FD4 (FD3) Windom Antenna The 4-band Fritzel model FD4 is a special version of a Windom antenna. I suggest that new frequencies be promulgated, a few KHZ further away from FT8 on the popular bands , such as 40m, 20m 17m 15m. DJ2KY di tahun 1971dan diproduksi secara komersiil dengan nama Fritzel FD4 antenna. The 4-band Fritzel model FD4 is a special version of a Windom antenna. WINDOM. 8-band antennas need 239 feet of ground space end-to-end. BEST COMPACT: Antennas Direct ClearStream 4V Long-Range TV Antenna. Add to Cart. S. . This has also been the case in Germany. The NRF24L01 module works with the help of SPI communications. The antenna is off center fed with a matching network and is mounted next to an insulator of fiberglass and polyester resin. The Fritzel FD4 antenna becomes more popular in Europe and N. hello, 13,5m; 27,5M and a 1:6 balun. -V 80. 6-Band Windom antenna. Find many great new & used options and get the best deals for PAC Aai-fd4 Rear-seat AUX Input for Select Ford Lincoln Mercury 2004 - 2010 at the best online prices at eBay! Free shipping for many products!. Spillner (DJ2KY) that this antenna, with the addition of a small one-band Windom for 15 m, can. Pilot kite 3. 2 29. 03. pc is a toughbook cf19 wx is quit good,strong winds, 9 xxxx & yyyy are the names of the two participants. Aux, lines to keep antenna level 8. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. The original Windom antenna from the late 1920s was an off-center fed resonant dipole with a single wire feedline of any length. 35. I know this is an old thread - but Hofi in Germany still manufactures the antenna. I have FT-891 and when i try on my FD4 antenna with 5W, i sometimes need more attempts at TX, so i spice it up to 20W to push it through. 155. Most antenna tuners work best into moderate to high impedances, rather than low impedances. It had the same dimensions as the multiband Windom antenna, but fitted with a 200Ω (4:1) balun at its feedpoint and fed with coax. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. Part Number: MFJ-1779A. Hi all, I bought the Mini1300 from China and Software says Version1. Fritz Spillner, DJ2KY, in 1971. WINDOM. . The windom antenna can also be hung as a. Operating HamSphere 4. 7 Mllz arc available if the high fre- quency is directly coupled out. 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. com Hex Beam Base Plates, Mastrant. This has also been the case in Germany. This first video is by a beginner for beginners! In an unc. 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. 200 - Inverted-V Beam Antenna for 30m. Hari Wire Groundplane Antennas. MHz 4. FS: Fritzel Windom Type antenna. 7 - Center-fed antenna one and one-half wavelength long (A) folded into a three-quarter-wave folded dipole (B and C). . hihi.