factory sound when I plug in my Mp3 player into the radio and didn't want to use one of those units that goes into the antenna and is. Installation de l'antenne filaire FD4 de chez Fritzel sur un pylône de 6 mètres en V inversé la rendant omnidirectionnelle. ic7800 @ 100w microkeyer ii - heil proset elite - cushcraft r6000 and fd4 antennas - n1mm logger. The original Windom antenna (devised in 1928-29), named after Loren Windom, W8GZ. Hari Wire Groundplane Antennas. 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. Len Carlson, K4IWL. I hear one friend say me " Dipol antenna or multi band FD3 or FD4 need minimum 8 meter up the ground or roof" is correct ? I cant up 8 meter over the my roof max. As at the way things are now all that will happen is Olivia will get a number of FT8 stations annoyed. America. Baldur Drobnica will be active from Hargeisa, Somalia until 6 June 2018, as 6O0X. 00 /Each. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. 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,secure the ends, the 4-Band antennas need at least 60 feet of ground space from end-to-end. 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 windom antenna that I'm going to tell. Operating HamSphere 4. When the dipole is installed horizontally, at about one meter (3-4 feet) above ground, you effectively get a NVIS low-noise dipole. 38m) split. Success, after several years, I finally manage to get out of the block of flats and into a family home, and I would like to replace CB with something more interesting, e. What became perhaps the most popular multiband Windom design of all, was the German-made Fritzel FD4. Didn't think of the postal theft situation in many countries. Military AS-2259/GR There are a number of different NVIS antenna plans on the internet that can be adopted to amateur radio use. 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. Observations: Both the end-fed and center-fed antennas operate just fine without any additional conductors or feedlines. FD3 and FD4, trap. 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. By the end of the 70's interest in the Windom ----- Original Message ----- From: "Gerry Hohn" <telwest@. Alpha Antenna 2-20M Portable Vertical Antenna for VHF & HF. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. It had the same dimensions as the VS1AA multiband Windom antenna, but fitted with a 300Ω balun in its feedpoint and fed over coax. 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. 7-m in the. TA4AU. Opinions sought on Fritzel FD4. 47 kB, 1280x1024 -. The MMANA-GAL model’s data comma-separated variables (CSV) file is plotted as MS-Excel graph between. The half-size version is known as the FD3 40-20-10m antenna. *Note: The FD4 Windom is a 300Ω balun-fed antenna with lres = 41. 206 - X-Ray Monoband Antenna Gain=6. 7-m in the 1960s. Ashok Use your search engine to find 'FD3 antenna' and 'FD4 antenna' - I see many hits. 5m and 2. At least the antenna seems working during the February NAC 23cm contest. 6m directional antennas with 5, 6 or 7 elements, 1 kW. The Fritzel FD 3 HF Antenna,is a great antenna! He is made for the 10-20-40 meter bands,and wil. 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. SWR is actually better with 300-ohm transmitting line than with the 450 ohm line normally used. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. Antenna Windom Links → . adding two wires to the basic FD4, 4. Hy Power Antenna Company - US amateur radio antenna manufacturer. $44. Latin America. Rest assured, both problems are dealt with by the CL-OCFD, also list-ed at the bottom of Table 1. Posted on 23 July 2012. “FD4” 4. 35. 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 old Y-Calls had to change in 1992 and I got DL1JBQ. 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. I live in a suburb. 36 . 8-m and 27. However, two problems remained: The next section explains why traditional OCF dipoles have these inherent lim-itations. 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. But it was over water, the villa pool hi. FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. Este diseño también presenta unos bigotes de gato para trabajar las bandas WARC y los 15m. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. Sometimes, all you can use for 40 m field work is a low-slung portable dipole antenna. . in JO62PL. This was a good destruction from my dentistry study on the weekend. He will operate on 40, 30, 20m, including activity in CQ WW WPX CW Contest. 6 288 29. , 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. Most Popular. See physical description below. This antenna talks! The logs don’t lie. Rated 5 out of 5 stars. In Stock. By the way, a German ham told me that Herr Fritzel, the company founder, passed away recently. but it was nice to meet you. The Fritzel FD4 antenna is a classical antenna in our series of HS4 Legendary Multiband Wire Antennas. But we are speaking about longwires here, not about an FD4. Added: 07/18/2019. DL1JM did likewise. The Fritzel FD4 antenna becomes more popular in Europe and N. and "bout 15 MHz if matching is SWR Window on the following. You have tried to build an FD4 antenna which is no bad solution at all. The wire antenna is the classic amateur radio antenna. 6-Band Windom antenna. incl. The FD-4 is still made with outstanding quality of. Versi Dr. This link is listed in our web site directory since Monday Oct 19 2009, and till today " The Cobra antenna " has been followed for a total of 1493 times. . RF-1936/38 Portable Crossed-Pole Antenna Series MECHANICAL RF Connector Side feed with wing nut. 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. 8-band antennas need 239 feet of ground space end-to-end. Both of these proved toI suggest that new frequencies be promulgated, a few KHZ further away from FT8 on the popular bands , such as 40m, 20m 17m 15m. 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. For best results with this type of antenna, the Apex Angle should be kept between 70 and 110 Degrees . 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 performance characteristics are quite outstanding. 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. 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. Dat is op de laagste frequentie een draad van een halve golflengte. incl. vy good fr emcomm. Free Shipping. El dipolo Windom es un dipolo de 1/2 longitud de onda de la banda deseada, estando el punto de alimentación conectando a 1/3. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. Fig. The Fritzel FD4 antenna becomes more popular in Europe and N. 0 Extras: Using the Editor to Customize Your Transceiver. Contact. I suggest that new frequencies be promulgated, a few KHZ further away from FT8 on the popular bands , such as 40m, 20m 17m 15m. EN. My maximal lenght for the 2/3 wire is 24m maxi, i have no mutch place in my little garden. It is still available from They continue the Fritzel antenna business. TrademarkElite is the U. Hari Wire Groundplane Antennas. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. 4 PL Clovis FD2 Fire 2. 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. 73 de Raimund DH8RD in JO44PE. be Multiband Delta Loop (W2EGH) | MyHam. I myself am working with a simple FD4 Antenna. The 4-band Fritzel model FD4 is a special version of a Windom antenna. Bandwith 150Hz. Properly and efficiently dispose of your establishment's food waste with the Hobart FD4/200-2 commercial garbage disposer with adjustable flanged feet. fd4_hg7wav. FS: Fritzel Windom Type antenna. 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. This became known as the Fritzel FD4 (80, 40,20,10m) but is more correctly described as the Off Center Fed Dipole (OCFD). So I checked the frequency and had to adjust it (27MHz calibration)What became perhaps the most popular multiband Windom design of all, was the German-made Fritzel FD4 antenna, described by the late Dr. 80,40,20,17,12,10m Seperate parts for balun, isolator, wires. After the wall came down I got my own station with an old FT-277B with FD4 antenna. Fritzel used the shown dimensions of 13. Fritz Spillner, DJ2KY, in 1971. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. This dipole consists of a matching balun and two. Modified: 11/26/2021. 2. 2350 103. Item number # 425fd42003. 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. Fritzel used the shown dimensions of 13. 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. click here to follow the link to The FD4 (FD3) Windom Antenna. FD4 antena ima problem sa napajanjem. A while back a ham in the Far East set up a Visa account system where you sent him a donation via credit card and he used that to mail back a hard card qsl. This trademark application was filed with the USPTO (United States Patent and Trademark Office) under the trademark classification: Computer Product, Electrical & Scientific. About HF Linked Dipole Antenna Calculator. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. FD4 (80/40/20/10 m) The 4-band Fritzel model FD4 is a special version of a Windom antenna. Furthermore, none of these designs offered 30 m. is the designer and trade mark holder, and primary source for Bury-Flex Tm low loss coax cable. SWR is actually better with 300-ohm transmitting line than with the 450 ohm line normally used. 1971 - Dr. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. 6. Add to Cart Details. Az FD4 antennámon a következő lépés az antenna mérése, kihasználva a VNWA lehetőségeit. This encompasses not only long-wire antennas, but also the classic dipole. Aux, lines to keep antenna level 8. And they seem quite slack . > antenna is no longer made. This Windom antenna was marketed in the late 70's and early 80's as Smithe's Windom. 1971 - Dr. While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands. 03. Odg: Multiband FD4 antena. Equipment will be similar to September 2011 WAE SSB Contest work, with the Kenwood TS570D and Windon FD4 antenna. It is an off centre fed dipole, with 10 feet of vertical radiator. It is a modularized Amateur Radio Transceiver where operators build their own radio using plug-ins and virtual antennas. 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-m and 27. Spillner (DJ2KY) that this antenna, with the addition of a small one-band Windom for 15 m, can be used. 8-m and 27. It had the same dimensions as the VS1AA multiband Windom antenna, but fitted with a 300Ω balun in its feedpoint and fed over coax. VU2NSB OmniDX antenna (11m) VU2NSB OmniDX Antenna series is a very s. 3 dB gain, incl. The 4-band Fritzel model FD4 is a special version of a Windom antenna. 205 - Collinear Antenna Gain=3dB for 2m. The renowned “FD4” antenna was not an exception; Have a look at its VSWR specification on pages 13 and 14 of this brochure. 0: Using (but not overusing) DX Spotting and Making Manual Logging Easier. rig is a codan 2110v 25w fd4 antenna 15ft above ground yyyy, ur station is amazing! do u qsl js8. Also, why every house should have an emergency way of listeni. com. This result suggests that sequences outside the C and GMR35H08 elements restrict fd4/fd5 expression to the ventral imaginal discs. 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. America. . The half-size version is known as the FD3 40-20-10m antenna. The AS-2259 Antenna. The antenna rotor needed some tries to get moving again. Here is my home HF antenna. It is a long half wave on the lowest frequency and is powered by a coaxial cable through a. If anyone has experience, poradte. The Fritzel FD4 antenna becomes more popular in Europe and N. #1 Trademark Search and Registration Service :: TUNNEL VOICE FD4 is a trademark and brand of Tunnel Radio of America, Inc. It was intended to be used on one frequency only. . America. 4+4. Produce baluns, delta loops, dipoles, ocf antennas and more. The dual dipole wires do the job of providing guying support for the mast. Hari Delta Loop antenna for horizontal or vertical suspension, max. A shorter version FD3 for 40-10m operation is also developed. 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. A design for Ka-band satellite communication antenna in earth station is introduced. And the length of the legs must match. empfangen. Add a comment. ZS6BKW ANTENNA 22-may-2022. The resource is currently listed in dxzone. The FD4 Windom antenna. In addition, an R6000 has two separate traps for 12 and 17 m, while the 10 and 15 m traps of a. 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. Hi all, I bought the Mini1300 from China and Software says Version1. FD4 Antenna switched as T-Antenna, Datong Konverter up to 28 MHz, Kenwood TS 480 for receive, using CW. About Windom Antenna with 4:1 balun The resource is currently listed in dxzone. Dat is op de laagste frequentie een draad van een halve golflengte. University merilis tulisan tentang cara menala half -wave antenna dengan pengumpanan lewat single wire ini. The Fritzel FD-4 was designed by. 7 m werden in de zestiger jaren door Fritzel in zijn antennes toegepast. A kada ima problema sa napajanjem, onda su problemi sa komšijama verovatni . 3 dB gain, incl. 13-20 describes a modified VS1AA OCFD with a 4:1 balun connected to a coaxial feeder. D. 26 Inch High Gain Antenna (Original Baofeng GT-3/GT-3TP Antenna) 1 Year and 6 months Manufacturer's Warranty. 7,853 4 17 50. It was designed to cover 80, 40, 20 15, and 10 meters. Fritzel FD4 antenna, described by the late Dr. Only good results on 80 and 160 meter bands in combination with a MFJ 969 de luxe versa antennatuner. 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”. Mivel az antennaszálak kimérését közel se tudtam azzal a precizitással elvégezni, mint a balun és a trafó elkészítését, nem lepett meg az első mérés eredménye. The graphic below shows its performance on the 40/80/160m bands for the conditions shown there. 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. HamSphere 4. The output looks a bit “interesting” and it could probably use a Band Pass Filter, but the signal is in fact there. Vertical antennas made of steel wire, monoband or multiband, with balun and radials. , DJ2KY modified the VS1AA antenna design by replacing the single feed wire with balun and a coax feeder. , DJ2KY modified the VS1AA antenna design by replacing the single feed wire with balun and a coax feeder. Fritzel FD 4 Multiband Antenna Reviews Home Reviews For: Fritzel FD 4 Multiband Antenna Category: Antennas: HF: Verticals; Wire; Loop eMail Subscription Registered. But we are speaking about longwires here, not about an FD4. Add a comment. Top. 0: We discuss Antennas, DX'ing, Calling CQ, and other Topics. ). HamSphere 4. 4 (MHz)Fritzel FD4 antenna, described by the late Dr. So here at my home there is also room for improvement. power 1 kW, approx. The half-size version is known as the FD3 40-20-10m antenna. Szerző Téma: G7FEK antenna 80 méterre (Megtekintve 3197 alkalommal) hg0npj. Hobart FD4/150-3 Commercial Garbage Disposer with Adjustable Flanged Feet - 1 1/2 hp, 110-120/220-240V. More bandwidth can be obtained with the rolled up ribbon stub system («fig). 1. Fritzel Antenna Source? 7. Regardless of how high the antenna is, a roof, especially a metal roof, will have a negative effect on the antenna pattern if the. Name: Fritzel FD4 HAM radio antenna. See It. 35. I made contacts with Azerbaijan, Suriname, Qatar and Thailand. Since it is resonant on multiple bands the signal level at the receiver is high. The 4-band Fritzel model FD4 is a special version of a Windom antenna. Today’s versions, based on the original Windom, include the common OCF and Carolina Windom. 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. New Carolina windom antenna - PDF file by QRP Expressions by By N. This trademark application was filed with the USPTO (United States Patent and Trademark Office) under the trademark classification: Computer Product, Electrical &. Background. Once you download and install this software you will get a basic working transceiver for a trial period. but nobody does receive me. The antenna was designed for military use from 2 to 10 MHz (some references say 2 to 30 MHz). Modified: 11/26/2021. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. The. I've certainly experienced postal theft of my SAE + GS mailings and was only able to secure some difficult to get countries though email discussions and the kind co-operation of the DX stations/ Managers to send me cards at their expense or having them identify a secure route. post 26 Apr 2023. 5m (15 foot) mast of about 5cm (2 inch) diameter, that also serves as the outside of a low-loss coax feedline. 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. PolyStealth Tm high strength PE insulated antenna wire, and Flex-Weave Tm wire. University merilis tulisan tentang cara menala half -wave antenna dengan pengumpanan lewat single wire ini. Antenna short 25ft off centre dipole OCD tied to balcony rail 15 feet high sloping down to 8 feet into hibicus bush. 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. com in 3 categories. One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. 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. It will match on even and odd harmonics - but it. 73, Ray K1XV . Fritzel used the shown dimensions of 13. It will match on even and odd harmonics - but it requires a complex balun at the feedpoint. 1. New Carolina windom antenna - PDF file by QRP Expressions by By N. This split allows the OCFD to be operated as a 4 band antenna as the SWR on the 40m band is less than 3. Hi all, I bought the Mini1300 from China and Software says Version1. Délután 4-re már állt az FD4 antenna és az azt tartó pecabot. t to. ' IS (MHz) so. 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. FD-4 antenna 3. The original Windom antenna from the late 1920s was an off-center fed resonant dipole with a single wire feedline of any length. Systems FCC-4 half-wave dipole antenna, also know as the reference dipole antenna, is the simplest form of an antenna. Don't hesitate - contact us. What we know. The half-size version is known as the FD3 40-20-10m antenna. The FD4 (FD3) Windom Antenna. com. 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. Final Clearance. 460. It is not an acceptable performer on 30, 17, or 10 meters. 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. The half-size version is known as the FD3 40-20-10m antenna. 55 m dipole fed with a 8. The asymmetrical dipole antenna developed and described by Windom (W8GZ) in 1929 has been used by many amateurs for many years as the FD4. Topic: Dipol - FD3 - FD4 (Read 3275 times) 0 Members and 1 Guest are viewing this topic. While the G5RV requires an antenna tuner, it is very efficient on at least 5 bands. 00. If you find my channel informative and entertaining, I hope you will consider joining my support group by c. Various sizes of a ZS6BKW antenna can be found on the Internet, so that the original design of ZS6BKW is often overlooked. Add to Cart Details. 0 Extras: Using the Editor to Customize Your Transceiver. I myself am working with a simple FD4 Antenna. T. DAVIS RF Co. Stay safe with that monster antenna!try other time, like morning and evening when people are on their stations actively clicking CQs, not just JTDXing automatically for the priziest QSO. Spillner (DJ2KY) that this antenna, with the addition of a small one-band Windom for 15 m, can be used. He is currently only using 100 watts and a FD4 antenna. The antenna was clipped to the RTL-SDR V3 antenna base without the telescoping whip – alligator clipped to the threaded mast. 5m. The R-7000 is a good antenna as far as verticals go, but it needs. At this moment, though, I don't remember if I used WSPR or FT8 to test with. 0, but I wonder how to send WSPR or FT8. 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. From time to time OZ0RF is active from Copenhagen in JO65FR. I…However although the antenna wires are strain relieved at the Balun. PWR TRAPS 4 cm Ø. All groups and messages. 201 - FD4 Windom Antenna for 80m, 40m, 20m, 10m. Regardless of how high the antenna is, a roof, especially a metal roof, will have a negative effect on the antenna pattern if the. 5dBdThe FD4 (FD3) Windom Antenna - The 4-band Fritzel model FD4 is a special version of a Windom antenna. HamSphere 4. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer. 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. Rating & Comments (0) Tags (7) Alternate Versions. VAT, plus shipping €63. 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. Add To Cart. 3V microcontroller or a 5V microcontroller but it should have an SPI port. So here at my home there is also room for improvement. antenna. The Fritzel FD-4 was designed by He. 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. Fritz Spillner, DJ2KY, in 1971. DJ2KY di tahun 1971dan diproduksi secara komersiil dengan nama Fritzel FD4 antenna. Fig. That is a wire of half a wavelength on the lowest frequency. Las medidas indicadas entre paréntesis, en el gráfico de la izquierda, son las indicadas para trabajar las bandas desde 160m a 10m. Details and QSL info is in qrz. It cover. 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. 0, but I wonder how to send WSPR or FT8. 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. I did follow the instructions and entered my Call and Locator, selected port S1 and connected FD4 antenna but nobody does receive me. Fritzel FD4 antenna, band 80, 40, 20 & 10M plus 17 & 12M 13. Ground anchors. 2. Bit easy compare with logging QSO on the higher bands. g. Antenna made of soft PVC insulated HO7 V-K 4 wire. So I checked the frequency and had to adjust it (27MHz calibration) But still no success. com in 2 categories. jpg (228. Fritz Spillner, DJ2KY, in "Die FD4-Windom-Antenne," QRV, Stuttgart, 25, December 1971, pp. ASUS AX3000 Dual Band PCI-E WiFi 6 (802. . One would argue that the stations worked would simply mail some funds to these DXpeditions to offset the lost income included with QSL requests. We discovered in an older periodical (QRV) the explanation by F. OZ0RF. It is used for military and paramilitary communications, broadcasting, [1] especially in the tropics, and by radio amateurs for nearby contacts circumventing line. This antenna also works fairly well on all odd harmonics, The asymmetrical dipole antenna developed and described by Windom (W8GZ) in 1929 has been used by many amateurs for many years as the FD4. Description: Fritzel FD4 HAM radio multyband HF antenna.