Building a vertical hf antenna

When deployed “low” for NVIS applications dipoles are also known as “cloud warmers”. The kit also includes extra wire for dipoles, half-rhombics and Vee beams on other bands. It includes pre-made Jungle Antenna ground planes cut for 28 MC and 51.0 MC plus a twin-lead J-Pole vertical for 2 meters.Cheap HF Homebrew 40m 20m 15m Vertical antenna I have documented a short antenna for Build the PAC-12 Antenna a multi-band portable vertical designed by KA5DVS Here's an award-winning, easy-to-homebrew, multi-band eBay Marketplaces GmbH (of Helvetiastraße15-17, 3005, Bern, Switzerland) is authorised by the FCA to conduct credit broking for a restricted. lower back pain before bfp reddit Build an EASY 10 Meter (28 MHz) Vertical Antenna for DX! 24 January, 2023 - Reading time: ~1 minute. In this video I will show how to build a simple ham radio antenna for 10 Meters using just one piece of coax and some wire. So... let's build a 28 MHz vertical antenna to work some of the DX and not miss out! 10 Meters has been going gangbusters with signals lately!Build an EASY 10 Meter (28 MHz) Vertical Antenna for DX! 24 January, 2023 - Reading time: ~1 minute. In this video I will show how to build a simple ham radio antenna for 10 Meters using just one piece of coax and some wire. So... let's build a 28 MHz vertical antenna to work some of the DX and not miss out! 10 Meters has been going gangbusters with signals lately!Great deals on Hf Vertical Antenna. Be prepared and able to communicate in case of emergency with the largest selection at eBay.com. lexus is300h fuse box diagram Jan 21, 2023 · Started building two loops in orthogonal planes and asymmetric vertical dipole. Active Antenna Amplifie LZ1AQ #hamradio #hamr #AmateurRadio #DX #HF #shortwave 21 Jan 2023 12:06:54 Cheap HF Homebrew 40m 20m 15m Vertical antenna I have documented a short antenna for Build the PAC-12 Antenna a multi-band portable vertical designed by KA5DVS Here's an award-winning, easy-to-homebrew, multi-band eBay Marketplaces GmbH (of Helvetiastraße15-17, 3005, Bern, Switzerland) is authorised by the FCA to conduct credit broking for a restricted. vegas rush bonus codes Three and a half to four foot loop antennas for several of the HF bands from 160- to 10-meters. You Can Build: A Compact Loop Antenna for 30 through 12 Meters. QST May 1994, pp. 33 …Vertical Antennas Projects category is a curation of 186 web resources on , Phased vertical antennas, G8JNJ Broadband HF Vertical Antenna, The Hudson antenna. Resources listed under Vertical Antennas category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. ... 5 Band Pipe Vertical Antenna - A simple, cheap and …Making up this basic vertical HF whip antenna is pretty straight forward, cheap to buy and consumes very little room. Ideal for portable operation as well as base station use, the … unity reload script assemblies every timeThe DX Commander is an All Band Vertical HF Antenna that covers 9 bands from 80m through to 6m. It is an economical and efficient way of getting on every HF ... 10. Super Antenna MP1DXG – Ideal For Outdoor Excursions. Check Recent Price. If you are part of a group or club of radio enthusiasts, then your value set is different than … macys ralph lauren polo Build an EASY 10 Meter (28 MHz) Vertical Antenna for DX! Discussion in ' Amateur Radio News ' started by VK7HH , Jan 24, 2023 at 2:40 AM . VK7HH Ham Member QRZ PageI went to visit a niece at her first ever flat and spied this very large home-brew, four-legged spider antenna on her building's roof. Never seen anything quite like it. It looked a little worse for wear and was not exactly vertical. The elements were about 2 meters in length, so maybe it was for 2m HAM band?? I wonder how the individual got permission to chuck it up there in the first place ...Practically all vertical antennas, designed for ... To make an antenna of this type operate on more ... To make the antenna work on the 15 meter band,.design. Put them to work and build a vertical that will shake the air with energy. By Walter Schulz,' K30QF ere is a vertical designed and built from graphs contained in The ARRL Antenna Book and ARRL electronics data book. In my case the antenna was completely made from discarded Yagi beam elements — a junk box vertical! 2022/05/01 ... Making this addition to my ham radio portable vertical antenna configuration has really helped me be heard better especially on the lower bands.I decided to build an antenna that I can easily use at home with a simple squid pole, and also portable if needed. It's built using RG-58 and some wire, commonly referred to as a T2LT or flowerpot antenna. Enjoy the DX! Build an EASY 10 Meter (28 MHz) Vertical Antenna for DX! Watch on VK7HH, Today at 2:40 AM #1 N8JJM likes this. piper m350 cost per hour VERTICAL ANTENNAS Small Garden Vertical HF Antenna Installation - Myths & Tips watersstanton 21.1K subscribers Subscribe 32K views 2 years ago Sometimes the only solution for HF operation...I decided to build an antenna that I can easily use at home with a simple squid pole, and also portable if needed. It's built using RG-58 and some wire, commonly referred to as a T2LT or flowerpot antenna. Enjoy the DX! Build an EASY 10 Meter (28 MHz) Vertical Antenna for DX! Watch on VK7HH, Today at 2:40 AM #1 N8JJM likes this. About Build this Vertical Portable HF Antenna The resource is currently listed in dxzone.com in a single category. The main category is Portable antennas that is about Portable antennas. …Building a cheap, portable, vertical HF Antenna - YouTube 0:00 / 12:28 Building a cheap, portable, vertical HF Antenna 17,767 views May 3, 2019 284 Dislike Share Save One Time Pad... delphi reddit dp The antenna itself is an off-center fed vertical dipole made by flipping an electrical quarter wavelength of braid back over the outside of the coax. The center lead of the coax forms one half of the dipole and the braid forms the other. The resulting antenna has a low radiation pattern and an impedance of 55 - 60 ohms.This comes as a KIT which includes the 10m DX Commander telescopic pole, the aluminium and UHMWPE plate set, all nuts, bolts, washers, fork connectors etc and 100m DX10 Wire on a factory packed roll. Rated for 1,500W key-down at 14MHz for 60 seconds. This is EXACTLY the same kit as the 80m product but with 100m of wire, not 200m of wire. moon in 3rd house synastry building, a usually roofed and walled structure built for permanent use. Rudimentary buildings were initially constructed out of the purely functional need for a controlled environment to moderate the effects of climate. These first buildings were simple dwellings.VERTICAL ANTENNAS Small Garden Vertical HF Antenna Installation - Myths & Tips watersstanton 21.1K subscribers Subscribe 32K views 2 years ago Sometimes the only solution for HF operation...2. HFJ-350M Toy Box Original Comet Portable 9 Band Telescopic HF Antenna - Great Option for Travel. 3. Super Antenna MP1DXMAX Low Profile Tripod 80m-10m HF +2m VHF Portable Antenna - Big Signal in a Small Package. 4. Comet Original CHA-250B HF/50 MHz (3.5~57) Broadband Ground-Plane Vertical Base Antenna -. sprinter van diesel tune DIY Multi-band Vertical HF Antenna J & J True Outdoor Adventures 4.21K subscribers Subscribe 38K views 3 years ago This video is a short demonstration of a homebrewed vertical antenna using a... This antenna may be constructed for about $100. Construction Notes The lower element uses 4 sections, overlapped about 29 inches, for strength. The upper element uses 3 sections, overlapped about 6½ inches, for low weight. Sections are slotted and clamped with worm gear hose clamps. Use Penetrox at every joint and at the feedline connection. old pickup trucks for sale Simple Multi‐Band HF Vertical Dipole By DJ0IP, November 2014 Page 2 DESCRIPTION: This simple non‐resonant vertical dipole enables users with limited space to erect an antenna capable of being used on all ham bands from 80 through 10m. It requires NO RADIALS. Yet itsbuilding, a usually roofed and walled structure built for permanent use. Rudimentary buildings were initially constructed out of the purely functional need for a controlled environment to moderate the effects of climate. These first buildings were simple dwellings.A vertical HF antenna can get away with a height of only λ/4. Here we compare the Cushcraft R9 and Hy-Gain AV-680 along side our 20 and 28' DX Flagpole and DX Vertical Antennas using Professional antenna modeling software . Just a happy few build a 5/8 wave vertical antenna.Drill 1⁄2 inch (1.3 cm) holes using a good drill bit, and never drill close to the end of the pipe.When the antenna is hanging from the vertical element, it can use light wire for the vertical part, and the radials can also be flexible wire if they are tied off with ropes, which makes an effective HF antenna hanging from a single support. Of course, the antenna doesn’t need to use a coax connector. When the antenna is hanging from the vertical element, it can use light wire for the vertical part, and the radials can also be flexible wire if they are tied off with ropes, which makes an effective HF antenna hanging from a single support. Of course, the antenna doesn’t need to use a coax connector. 2014 freightliner cascadia dash warning lights Cheap HF Homebrew 40m 20m 15m Vertical antenna I have documented a short antenna for Build the PAC-12 Antenna a multi-band portable vertical designed by KA5DVS Here's an award-winning, easy-to-homebrew, multi-band eBay Marketplaces GmbH (of Helvetiastraße15-17, 3005, Bern, Switzerland) is authorised by the FCA to conduct credit broking for a restricted.2. Sigma EUROCOM SE-HF-X80 Vertical Antenna 80 to 6 METRES : Best Without Radial. Get ready for the SE-HF-X80 from the well-renowned brand Sigma. This is a hf …How to Tune a monoband HF Vertical Quarter Wave Ham Radio Antenna ... tune a mono-band quarter wave. They are cheap and extremely easy to build. Here's how:. wvu medicine employee portal HF vertical dipole antennas for all frequencies 1.8 - 50 MHz offer lower angles, lower loss, lower noise, >90% efficiency, and higher performance. FT8 and QRP operators enjoy more dBs.. Please note that some processing of your personal data may not require your consent, but you have a right to object to such processing. Your preferences will apply to this website only.A very efficient half size 40 meter Vertical Antenna - A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. When deployed “low” for NVIS applications dipoles are also known as “cloud warmers”. The kit also includes extra wire for dipoles, half-rhombics and Vee beams on other bands. It includes pre-made Jungle Antenna ground planes cut for 28 MC and 51.0 MC plus a twin-lead J-Pole vertical for 2 meters.A vertical HF antenna can get away with a height of only λ/4. This is something I keep neglecting to consider: that ideally (at least assuming low-angle radiation is the goal) a … bmw m4 carbon bucket seats for sale Items 1 - 12 of 31 ... GigaParts.com - The full service computer and amateur radio store.Optimize antenna for use in a particular Amateur Radio Contest called the Virginia QSO Party. Modify existing 80m dipole to cover entire 500 kHz width of the band. Ensure it works in the Inverted V configuration. It’s Monday …The DX Commander vertical system is based on the same technique as a fan dipole. Effectively a number of elements present themselves to your load and self-select and achieve efficient quarter-wave performance on all bands, according to which quarter-wave elements are installed. The DX Commander shack runs one of these with 80m, 40m, 30m, 20m ... chocolate orpington The following notes show the design and construction of a Broadband HF Vertical antenna which does not require a tuner, and which is capable of providing moderate performance on all bands from 7MHz to 28MHz (reduced …Items 1 - 6 of 6 ... "powermatic 2 cigarette machine replacement parts" ; 5000199359 · 8446202 · $3.99 ; 5000052720 · 6298223 · $26.99 ; EP3241/54 · 6369437 · $799.99 ; 411 ...Description The Powermatic III+ (3+) electric personal roll-your-own cigarette injector machine.building, a usually roofed and walled structure built for permanent use. Rudimentary buildings were initially constructed out of the purely functional need for a controlled environment to moderate the effects of climate. These first buildings were simple dwellings. mud bath pittsburgh HF vertical dipole antennas for all frequencies 1.8 - 50 MHz offer lower angles, lower loss, lower noise, >90% efficiency, and higher performance. FT8 and QRP operators enjoy more dBs.. Please note that some processing of your personal data may not require your consent, but you have a right to object to such processing. Your preferences will apply to this website only.Set your ham device to the center frequency of the VHF band. Next, attach the connector points of the SWR meter to your ham radio. If the reading goes beyond 1.5, adjust the length of your …Jan 24, 2023 · 24 January, 2023 - Reading time: ~1 minute In this video I will show how to build a simple ham radio antenna for 10 Meters using just one piece of coax and some wire. So... let's build a 28 MHz vertical antenna to work some of the DX and not miss out! 10 Meters has been going gangbusters with signals lately! synastry aspects marriage 2021/01/07 ... The DX Commander is an All Band Vertical HF Antenna that covers 9 bands from 80m through to 6m. It is an economical and efficient way of ... party rentals queens Accept Reject. ap. llCheap HF Homebrew 40m 20m 15m Vertical antenna I have documented a short antenna for Build the PAC-12 Antenna a multi-band portable vertical designed by KA5DVS Here's an …The DX Commander vertical system is based on the same technique as a fan dipole. Effectively a number of elements present themselves to your load and self-select and achieve efficient quarter-wave performance on all bands, according …hf antenna verticalがアンテナのカテゴリに78点あります。即決商品や締め切りの近い商品など、条件を絞ってお探しいただけます。海外通販ならセカイモン【ebay公認】 ust bacak nasil incelir Fortunately Palomar Engineers has simple building block solutions to solve the matching and noise issues as well as a seldom used vertical design that has a higher radiation efficiency and stronger reception of HF band (1-30 MHz) signals for amateur and commercial radio communication. Here is a typical vertical antenna system: 1. the art or business of putting up (houses etc) ( also adjective ). a building contractor. construcción 2. anything built. The new supermarket is a very ugly building. edificio ˈbuilding society a business firm that lends money for building or buying houses. sociedad hipotecaria ˌbuilt-ˈin adjectiveJust a happy few build a 5/8 wave vertical antenna. This is remarkable, since the 5/8 has the lowest angle of radiation and a little bit more gain (depending on ground conditions). Whenever you have an open field to … massage directory design. Put them to work and build a vertical that will shake the air with energy. By Walter Schulz,' K30QF ere is a vertical designed and built from graphs contained in The ARRL Antenna Book and ARRL electronics data book. In my case the antenna was completely made from discarded Yagi beam elements — a junk box vertical! airbnb party house houston with pool Jan 24, 2023 · 24 January, 2023 - Reading time: ~1 minute In this video I will show how to build a simple ham radio antenna for 10 Meters using just one piece of coax and some wire. So... let's build a 28 MHz vertical antenna to work some of the DX and not miss out! 10 Meters has been going gangbusters with signals lately! The DX Commander is an All Band Vertical HF Antenna that covers 9 bands from 80m through to 6m. It is an economical and efficient way of getting on every HF ... lubbock craigslist pets Build an EASY 10 Meter (28 MHz) Vertical Antenna for DX! 24 January, 2023 - Reading time: ~1 minute. In this video I will show how to build a simple ham radio antenna for 10 Meters using just one piece of coax and some wire. So... let's build a 28 MHz vertical antenna to work some of the DX and not miss out! 10 Meters has been going gangbusters with signals lately!Success! Full length for 40 meters it stands 6 feet tall atop its 8" spike made from 1/4 inch aluminum hardware store rod stock. When collapsed and disassembled the longest piece is 10" collapsed whip. for counterpoise I use a 17' piece of #16 speaker wire. The whole thing weighs 10 oz. ip adresi nasil bulunurHF may be an independent predictor of insomnia symptoms, according to a presentation from the American Heart Association Scientific Sessions.“Several factors contribute to insomnia symptoms in heart failure, including advancing age, d...The Off-Center-Fed Dipole Antenna – Design. October 25, 2015 By Gary Rondeau. There are a few ways to build multi-band HF antennas. These include multiple resonant dipole arrays, trapped dipoles, resonant loops and the off-center fed dipole, OCFD. I’m going to look at the OCFD because it is relatively simple to construct, yet gets quite ...HF Kits offers you DIY kits and spare parts for ham radio amateurs. You will find here antenna, Balun, traps, endfed or transformer DIY kits and parts. coca cola bear plush W1FB designed the antenna, but he wasn't sure that an acceptable impedance match could be had on all four bands without a complex matching network. We decided ...KQ6XA-- HF Antenna for the Micro-Light Backpacking Enthusiast K6STI Receiving Loop ... Trapless short vertical antenna - Resonant on 20, 15 and 10 meters, without traps, 12 and 17M with a tuner. From David, N5IZU ... TV antennas were all the building materials we used. After the antenna was complete, we could hit 2 different repeaters about 60 ...2013/07/19 ... The Asymmetrical Hatted Vertical Dipole (AHVD) is an ideal Portable HF Antenna you can build yourself. sams club party trays 2021/03/16 ... Here is an interesting design that you can build yourself. Ideal for small gardens yet full size performance.Build your own 49:1 Matching ...Building the Vertical Dipole Antenna The center vertical sections and main horizontal support arms are made of one-inch square aluminum tubing from a local hardware store. One 8-inch long, 1 1/4 inch SCH 40 PVC pipe from the hardware store is used as an insulator and support between the top and bottom vertical elements of the dipole.This comes as a KIT which includes the 10m DX Commander telescopic pole, the aluminium and UHMWPE plate set, all nuts, bolts, washers, fork connectors etc and 100m DX10 Wire on a factory packed roll. Rated for 1,500W key-down at 14MHz for 60 seconds. This is EXACTLY the same kit as the 80m product but with 100m of wire, not 200m of wire. A vertical HF antenna can get away with a height of only λ/4. This is something I keep neglecting to consider: that ideally (at least assuming low-angle radiation is the goal) a …RT @PA7JWC: Started building two loops in orthogonal planes and asymmetric vertical dipole. Active Antenna Amplifie LZ1AQ #hamradio #hamr #AmateurRadio #DX #HF #shortwave 22 Jan 2023 22:26:12 grinch christmas decorations hobby lobby Jan 8, 2021 · The DX Commander is an All Band Vertical HF Antenna that covers 9 bands from 80m through to 6m. It is an economical and efficient way of getting on every HF band easily with a nice compact vertical antenna. I build and review this antenna below. I hope you enjoy. Do you own a DX Commander? How does it perform for you? $895.00. Add to Cart. 160M Monopole Vertical Antenna Learn More ... $1,650.00. Add to Cart. H.F. Vertical, 9 HF BANDS,6,10,12,15,17,20,30,40, and 80M. tiraj rapid florida midi Today I'm building an HF monopole for 20 meters. I go through a basic formula, for fun we model the antenna in MMANA-GAL, then I show you how I put it togeth. A Balanced Balanced Antenna Tuner QST February 1990, pp. 28-32 Build the right antenna tuner to use with your balanced, open-wire-feed antenna.A convenient coil size is 2-1/2 inches in diameter, six turns per inch, such as B & W 3905-1 stock. The number of turns required, assuming 80 meters as the lowest band to be used, should be about 30 turns with an antenna length of 25 feet. Adjustment of the antenna requires the use of an SWR bridge.Search this website. 2022. 6. 6. · Many people mightThe Wonder Stick is composed entirely of schedule 20 PVC pipe and a piece of copper-weld 12 gauge wire. I purchased 3 different sized white PVC pipes at 1", 3/4" and 1/2" in 10Ft. lengths. (each length was $1.97 plus a 1/2" end cap for .37 cents. (the rest was tax) I already had the copper-weld wire and 3 bolts to drill and secure the sections. low cost dog grooming near me Building The Antenna Coax Cables Velocity Factor The only things you need to build a Vertical Bazooka are a length of coax, a connector to fit your radio and a length of heat shrinkable tubing. All these parts should be readily available from your local electronics parts or ham radio stores. It's a good idea to have your antenna at least one half ( 1/2 ) wavelength of the antenna. one quarter (1/4) wave is the minimum height above ground for effective performance. Wire "J" poles for VHF are easily built, and can be used in an emergency. These inventions simply use the ever popular 300 Ohm antenna lead in wire. worcester craigslist used honda snowblower for sale 2018/07/02 ... This post describes a simple, easy to make and erect portable vertical antenna for the low bands (160, 80 and 40M). {ed. 80, 40, 20 and 15M were ...Real antennas are a compromise between performance and practical limitations or economies of implementation. Each implementer must make a judgement of system ...When deployed “low” for NVIS applications dipoles are also known as “cloud warmers”. The kit also includes extra wire for dipoles, half-rhombics and Vee beams on other bands. It includes pre-made Jungle Antenna ground planes cut for 28 MC and 51.0 MC plus a twin-lead J-Pole vertical for 2 meters.Ham Radio Kit Building - QRP Guys Tri-Band Vertical Antenna. QRPGuys Mini No Tune End Fed Half Wave Antenna Build. Ham Radio: Really good simple 3-band portable and small garden vertical antenna for 40m, 30m, 20m. ... Quarter wavelength wire vertical needs no trimming. ARMADO, EXPLICACIÓN y PRUEBA ANTENA ENDFED (EFHW) QRP. LCARA …How to build a multi-band HF Vertical Antenna - DX Commander Rapide You can build this ham radio antenna - or you can build mine from a kit?! spokane mugshots of the week For our lower ham bands, 160, 80 & 40m, the heights required by horizontal antennas for working DX is effectively beyond the reach of most hams. As a result, we often turn to vertical antennas for our DX solution. ... In this section, I will show you how easy it is to build an effective DX vertical antenna for any of the low bands. ... craigslist small trailer HF vertical dipole antennas for all frequencies 1.8 - 50 MHz offer lower angles, lower loss, lower noise, >90% efficiency, and higher performance. FT8 and QRP operators enjoy more dBs.. Please note that some processing of your personal data may not require your consent, but you have a right to object to such processing. Your preferences will ...HF vertical dipole antennas for all frequencies 1.8 - 50 MHz offer lower angles, lower loss, lower noise, >90% efficiency, and higher performance. FT8 and QRP operators enjoy more dBs.. Please note that some processing of your personal data may not require your consent, but you have a right to object to such processing. Your preferences will ...A Simple 40-Meter Half Square Antenna. Post #219. August 09, 2013. On Friday, 09 August 2013, I built my first 40-Meter Half Square Antenna. Several hams I know have used this simple antenna to increase their contacts on 80 and 160 meters. The antenna provides some gain over a single vertical antenna and offers some signal rejection off the sides.The vertical itself is just a simple piece of wire, placed upwards along a fibre mast. The length depends of the frequency: wire length = 5/8 * v * c/f Where v is the velocity factor of the wire, c the speed of light in vacuum (300.000 km/s), and f the frequency. We can simplify this to: wire length = 187500000 * v / f labs for sale mn You can use wire for the bottom leg of the vertical dipole to make it even lighter! With that said, I'll design a FULL WAVE vertical dipole seen in the drawing below for 21.300mhz, which should provide 10-20 meter coverage using a tuner. From the chart below, 21 mhz is the center band. The 10% length reduction is for use with a coil. A vertical HF antenna can get away with a height of only λ/4. This is something I keep neglecting to consider: that ideally (at least assuming low-angle radiation is the goal) a …VertiGo 33V HF vertical antenna for 40m through to 15m DX antenna, ... Most are shortened and make use of traps and coils in order to produce an SWR close ... reddit careers Diamond Antenna CP610 Dual-Band Vertical Antennas CP610. Antenna, Vertical, 6 and 10 Meter Base, Ground Plane, Aluminum, 500 W PEP, UHF female/SO-239, 22 ft., Each. Part …build· ing ˈbil-diŋ 1 : a usually roofed and walled structure built for permanent use (as for a dwelling) 2 : the art or business of assembling materials into a structure Synonyms edifice structure See all Synonyms & Antonyms in Thesaurus Example Sentences My office is in that small brick building. We bought the land for building.$895.00. Add to Cart. 160M Monopole Vertical Antenna Learn More ... $1,650.00. Add to Cart. H.F. Vertical, 9 HF BANDS,6,10,12,15,17,20,30,40, and 80M. cvs vjt Set your ham device to the center frequency of the VHF band. Next, attach the connector points of the SWR meter to your ham radio. If the reading goes beyond 1.5, adjust the length of your …The DX Commander vertical system is based on the same technique as a fan dipole. Effectively a number of elements present themselves to your load and self-select and achieve efficient quarter-wave performance on all bands, according … starpass gift codes 2022 Building a vertical hf antenna. Every MP1 Super Antenna covers All Bands 40 meters through 10 meters, and continuously covers all frequencies 7 MHz~30 MHz & every frequency in between, plus VHF 6 meters - 4 meters - 2 meters ... A Balanced Balanced Antenna Tuner QST February 1990, pp. 28-32 Build the right antenna tuner to use with your balanced, open-wire-feed … what size battery for 2016 ram 1500 10 Meter Antenna Homebrew7 Great Moxon Antenna Projects for HF Bands. Dakman Man Buon Ma Thuot Coffee Co. I decided to use a vertical antenna on 10 meters because I had a Radio Shack 102-inch stainless-steel whip (#21-903, $15) just looking for an application! ... when I was a CB operator, I begin to build a serious DX antenna. 5/8 Vertical ...The Off-Center-Fed Dipole Antenna – Design. October 25, 2015 By Gary Rondeau. There are a few ways to build multi-band HF antennas. These include multiple resonant dipole arrays, trapped dipoles, resonant loops and the off-center fed dipole, OCFD. I’m going to look at the OCFD because it is relatively simple to construct, yet gets quite ...design. Put them to work and build a vertical that will shake the air with energy. By Walter Schulz,' K30QF ere is a vertical designed and built from graphs contained in The ARRL Antenna Book and ARRL electronics data book. In my case the antenna was completely made from discarded Yagi beam elements — a junk box vertical! This page allows you to calculate the length for a 5/8 wave antenna. It uses the standard formula, 585/f (178.308/f for metric) MHz to calculate the element lengths. If you've experimented with 5/8 wave antennas before and know of a better formula for your QTH, feel free to change the formula to suit. This formula is for a wire antenna. modern woodworking plans