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40 Meter Vertical Antenna Length, 44m and its Given that I currently had a 20-foot collapsible fishing pole for my 40-meter shortened upright, that is what I utilized for this multiband antenna. This will also function well on 15 meters, which is a third This article and project shows that with a little planning, effort and skill using what you have just laying around, that you can build yourself an antenna that works! Let's Design a Vertical The antenna selected for illustration in this article is a top-loaded vertical for the 40-meter band, operating at one quarter wavelength or 90 electrical degrees. Nor is it limited to the loading coil specified in the section above. 8 m tall. Red wire soldered and crimped . The vertical antenna is specifically DX vertical antenna for the low bands 160 and 80 m, also available with 40m band coverage. Optimize The antenna was typically 1 to 2 S-units lower in signal strength reports, and at times was comparable to my full-size (33-foot) quarter-wave 40-meter antenna. • The feedpoint So how does NVIS work? Due to design the NVIS antenna transmits radio waves vertically (75‐90 degrees from earth’s surface)to the ionosphere where they are reflected back to earth in a circular ANTENNA DESCRIPTION The TZ-V-xx are full sized quarter wave vertical antennas that are excellent performers providing single band performance with superior Introduction The DX Engineering 40VE-2 is a fast taper single-band vertical antenna system with a low profile top hat assembly and is slightly less than 25 feet in height. 65 A Simple and Portable HF Vertical Travel Antenna QST July Dimensions for Vertical Full Wave Loops last updated 24 August 2025. A square-shaped full-wave loop antenna oriented vertically for 40m operation. Get plans for building wire, vertical, and beam antennas for the 7 MHz band. DIY Shortened Vertical Antenna Introduction In the last few months, I got into antennas a little bit deeper. For the 40-meter band (7 MHz), a 1/4-wave vertical antenna would be roughly 33 feet (about 10 meters) tall. This guide shows a 44-foot linear-loaded low-noise design capable of 150 to 200 km range. 66 dBi) and no difference in wave angle (22 degrees for both). 5 / frequency in MHz To use the calculator, enter the desired operating frequency in megahertz to get a starting length in both feet High Performance 40 Meters Vertical Without Radials This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. Determine dipole, quarter-wave vertical, and loop antenna dimensions based on frequency, wire gauge, and antenna type. The 4BTVs are designed as self-supporting PY1BEK Vertical antenna for ham radio – 40-meter ham band (7 MHz) This self-supported vertical antenna was made with aluminum tubes of 3 m in I s operation with one antenna acceptable if it covers the 80-, 40-, 15- and 10-meter bands? For a new Novice that's a reasonable approach, I decided. It is built on a Spiderbeam 12m (40 ft. Each side of the square loop measures approximately lambda/4, with the total Introduction The DX Engineering DXE-40VA-1 is a self-supporting vertical antenna system that operates over the entire 40 meter band with an SWR of under 1. I plan on putting down 32 radials. When we looked at the , we saw how the shape could be changed to give The approach for the Shorty 40 is not limited to 40 Meters. Another key to performance in any quarter wave vertical is a good An Efficient Multiband Vertical for 160 through 20 Meters QST October 1998, pp. My inverted V dipole antenna at 40 feet performs well, but it is "a cloud burner," best The 40 meter Mono-Band 1/4 WAVE Vertical antenna is a heavy duty freestanding foldover vertical antenna. 5 feet 20 meters = 35 feet 30 meters = 50 feet 40 meters = 65 feet By Mike Mertel K7IR All vertical monopoles need some form of counterpoise in which antenna image currents flow to work efi-ciently. Shop HF Vertical Antennas and Building a dipole for 40 meters can be a rewarding antenna project, whether for a fixed station or portable operation. Near Vertical Incident Skywave (NVIS) Antennas last updated 11 December 2024. 1 foot long. tall antenna is active on both bands, maximizing efficiency. and a 3 wire “ umbrella ” on top Radial length • The pole should be about 12m high (minimum 11m). Propagation-wise it more closely resembles 27 FOOT HOA 10-40 METER NO RADIAL MULTIBAND VERTICAL ANTENNA WITH UNUN View Details 33 FOOT 10-80 METER MULTIBAND VERTICAL Make a Collapsible Portable ¼ Wave 40 Meter Amateur Radio Vertical Antenna with Components You Own HOA Ham 20K subscribers Subscribed Compared to random wires or compact vertical antennas, this reduced-size dipole often exhibits lower noise and more predictable tuning Homepage van Maarten Ouwehand PG1N VLF Projects 136 kHz Projects 472 kHz Projects 500 kHz Projects Multiband HF Projects 160m Projects 80m Projects 60m Projects 40m Projects 30m One of the simplest antennas to have is the quarter-wave vertical. The DX Engineering DXE-40VE-1 is a fast taper 33 feet high 40 meter monoband vertical antenna system. This led me to look for suitable vertically polarized antennas. mast is required - Too long Radial length ~ 60 ft. Local conditions, including proximity to structures, other antennas, the number of With these antennas, you get full size 40 meter performance in an antenna less than 24 ft. Here is another stealthy, 40 meter This article shares the author's experience with building antennas. Designed with corrosion-resistant aluminum tubing, 26 feet tall and only a My Design for the 80/40 meter Semi-Helical Inverted L Vertical Explained: This design is basically 2, 1/4 wave lengths of wire, one for each band, with one band The chart above shows the relative gain achieved when adding additional radials beneath afull-size quarter-wave vertical. ) telescoping fiberglass Spiderpole. Building a dipole for 40 meters can be a rewarding antenna project, whether for a fixed station or portable operation. The coax feeder has to be routed as far away from the lower part of the antenna as possible. high. (39’4” to 36’). Due to the loading effect of the traps, the 40-meter portion of the antenna will be somewhat shorter than a full-sized 40-meter vertical without traps. 25 dBi vs. Updated January 2025 with more 80m data. 150 MHz. Here is a concept drawing for what I have in mind: 20M, 15M and 10M vertical concept drawing. But shortened to 2/3 the length, the height is now We have not only surveyed comparatively the performance of vertical antennas and arrays on 40 meters, but we have added screen reflector arrays to the list that we normally see. I haven’t been entirely happy with the conclusions in my analysis of the length of a half For you guys who like HF: I’m trying a home brew 40 meter 1/4 wave vertical ground plane. Higher is better, but then you will have to re-adjust the total length for resonance. A complete guide for amateur radio and HF Build a compact 40 meter NVIS antenna for field use. What do you think? An Efficient Multiband Vertical for 160 through 20 Meters QST October 1998, pp. However, a full-size, half-wave dipole for 40M is about 66 feet (20 meters) long—a significant chunk of real estate that many urban or portable THE N4UJW ANTENNA PROJECTS DESIGN LAB THE BEST HAM RADIO OPERATORS HAVE GOOD ANTENNAS! You can't work them if you can't hear 126 - Cobra Antenna for 80m 127 - Log-Periodic Wire Antenna for 20m, 15m, 10m 128 - 5-Element Log-Periodic Vertical Antenna for 80m, 40m, 20m 129 - 2m The station of my dreams would have two freestanding towers, one for the “run” rig and everyday DXing, and one for the “search and pounce” second rig. When we looked at the , we saw how the shape could be changed to give With its size, ease of installa-tion, and reliable perfor-mance, the 40 meter quarter wavelength vertical antenna is a very popular HF antenna. 8 MHz With a regular vertical: 62 ft. The vertical itself is a salvaged unit (probably ex. This counterpoise usually consists of a system of radial wires placed My guideline is to avoid ground mounting any vertical antenna for any frequency where the size of the antenna is relatively comparable to any surrounding objects. Wide bandwidth means more time operating and less Quater-wavelength in meters: 71. Considering that this was However, a full-size, half-wave dipole for 40M is about 66 feet (20 meters) long—a significant chunk of real estate that many urban or portable Free Shipping - DX Engineering 40 Meter Fast Taper High Performance Vertical Antennas with qualifying orders of $99. Wide bandwidth means more time operating and less A top loaded vertical antenna has several advantages over the conventional vertical, but the biggest advantage is that it's shorter in length. The ground side of the antenna is a series of radials that all Butternut HF2V Vertical Antennas will optimize your operations on 80 and 40 meters. It has gain and wave angle comparable to a Learn how to build a 40-meter band dipole antenna with the right wire length, materials, and tuning tips. I expect it to cover from 80 meters to 10 (or perhaps 6). This antenna is a base-loaded quarter-wave vertical for 40m, physically shortened to just 3. The radials associated with a vertical antenna have a big impact on its peformance. Perfect for ham 30 Meter Vertical Antenna The 30 meter band is pretty interesting. Browse a curated collection of 40-meter antenna projects and designs. Local conditions, including proximity to structures, other antennas, the number of dipole length tables last updated 31 January 2025. As expected, the performance on 40 meters Hustler 4BTV 4-band HF vertical antenna and DXE installation guide packages are 4-band, trap vertical antennas that provide an omni-directional pattern. If you use an SWR meter or an analyzer at the base of the antenna you will get the most accurate readings in a timely Designing the Antenna for 3. My backyard is smaller than that of most ur- ban The vertical operates over the entire 40 meter band with an SWR of under 1. Although they suffer more from ground losses than do horizontally polarized antennas, this deficiency is redeemed by their ability to emit a John Portune, W6NBC I wanted a high efficiency 40 meter antenna with a low-angle radiation pattern for work- ing DX. This antenna is cut for 7. I am wondering if 16 66' and 16 33' radials will be just as efficient for the Relative 1⁄2 wl antenna size 10 meters = 17. As expected, the performance on 40 meters The horizontal loop vertical pattern stays relatively constant, only decreasing in ground loss as height is increased. Note that while This is a simple, FULL SIZE quarter-wavelength vertical for 40m. 5:1 using the indicated section lengths. 0. * Diminishing Return on Investment:as you see, adding more radials initially Introduction The POTA PERformer (Portable, Elevated, Resonant) is an elevated vertical antenna for 40M-6M sitting on an elevated PVC ground spike or tripod with the feedpoint about five feet off the Dimensions for Vertical Full Wave Loops last updated 24 August 2025. It can easily Vertical dipole for 20m (no coils) and 40m (w. 10 gauge vertical wire (red) and four 12 guage radials (black). - Too long Use a Telescopic mast, 27 ft. This antenna is a full-size quarter wave on 40 meters and it is 1/8 wave on 80 An experimento of a 40 meter delta loop antenna both in horizontal and vertical polarization and several elevation angles with interesting notes about the effect of #hamradio #hamr #antenna #radio Demonstration of a linear loaded 1/4 wave vertical amtenna that shows (at least) in modeling that it is as efficient as a full size 1/4 wave. 2001 The 40 Meters band stealth vertical antenna by K7ZB “You’re 30dB over 9 here” So goes the consistently Compared to random wires or compact vertical antennas, this reduced-size dipole often exhibits lower noise and more predictable tuning The antenna was typically 1 to 2 S-units lower in signal strength reports, and at times was comparable to my full-size (33-foot) quarter-wave 40-meter antenna. It has 8 to 16 ground Notice that on 40m there is less than half a dB difference in gain (0. This category features numerous designs for Least served by my other antennas are the 40m and 80m bands, so I included a coil “trap” for 40m in the design options options for this big inverted L. 1 MHz, it is between the 40 and 20 meter bands. New to NVIS? Here is a Beginner’s Guide to NVIS to get you We would like to show you a description here but the site won’t allow us. The imposing total height of the antenna is 22m, of which the lower 12 What fraction of meter is 40 centimeters? How far is 40 lengths in a 25 meter pool? What is the formula for a 40 meter dipole? The formula to calculate the length of a dipole antenna is It would definitely be tough to see. 45-49 A Disguised Flagpole Antenna QST May 1993, p. The 40m Loop antenna Ed, VK2JI (This antenna is also known under the names “Sky Loop” and “DX-Buster” and is very similar to Tuning the COM-40VA 40 Meter Vertical Antenna is straightforward and intuitive. CB) consisting of 4 telescoping aluminium sections with an extended length of 5. 5:1. 5:1, yet is less than 24 feet high. What’s more, with proper matching, it also performs very well GB 1/4 Vertical 40m super fast delivery shipped from holland 2th January 2017 and delivered in Denmark 4th January 2017 the antenna is easy to assemble and Calculate precise antenna lengths for amateur radio operations. This category features numerous designs for Further shortening the 40 Meter vertical antenna below 2/3 of its full length would primarily affect bandwidth and efficiency. 40 metre Horizontal Loop Antenna. Note that all the work shown here can be Tuning the Antenna It may be necessary to dismount the fishing pole from the aluminium plate several times in order to adjust the length of the vertical and reposition the halo slightly on the pole An The vertical operates over the entire 40 meter band with an SWR of under 1. I have 30 through 10m covered with the beams and needed individual antennas for 80 and 40 which the Find detailed projects and construction plans for various vertical antennas, including designs for HF, multiband, and specific bands like 160m, 80m, and 40m. 4 meters in height. loading coils), 4. To calculate a different frequency, you can recalculate the length in feet use the formula “Length feet = Find HF Vertical Antennas and Packages 40 meters HF Vertical Antenna Band and get Free Shipping on Most Orders Over $99 at DX Engineering! A 40 & 80 Meter Vertical Antenna A friend gave me a Butternut HF-2V 40 and 80 meter vertical antenna to play around with. Local conditions, including proximity to structures, other antennas, the number of We would like to show you a description here but the site won’t allow us. The missing electrical length is At the end of this page you'll see a chart showing the recommended lengths. Designed with corrosion-resistant aluminum tubing, this 32-foot tall antenna is very durable and attractive. The same approach can be applied to a 40 Meter antenna with a different The 40 meter Mono-Band 1/4 WAVE Vertical antenna is a heavy duty freestanding foldover vertical antenna. After putting a large magnetic loop project on hold, they decided to try a base I plan on installing a vertical antenna soon. As the antenna is shortened, the loading coil must compensate more, My preferred mode is CW DX, hence the 40m vertical. The tower for the “run” station was to have a four We would like to show you a description here but the site won’t allow us. The entire 32 ft. The pursuit of the best antenna for my The vertical operates over the entire 40 meter band with an SWR of under 1. The Shorty Forty design uses loading coils to deliver strong 40-meter performance in Introduction The classic Butternut® HF9V Nine-band vertical antenna operates on 75/80, 40, 30, 20, 17, 12, 15, 10 and 6 meters. But for 40 meters we'll look at a typical element length of 33. At 10. The vertical antenna operates over the entire 40 meter band with a SWR less than 1. 65 A Simple and Portable HF Vertical Travel Antenna QST July Reviews For: ZeroFive Antennas 40M full size vertical Category: Antennas: HF: Verticals; Wire; Loop eMail Subscription Registered users are allowed to subscribe to specific review topics and receive  As published in antennex Dec. Using this criterion, ground mounting Introduction The classic Butternut HF2V vertical antenna operates on 80 and 40 meters. 160 Meter Antenna Designs and Projects Resources for building and optimizing 160M transmitting and receiving antennas, including vertical, loop, and array Build a short dipole antenna for the 7 MHz ham radio band. rytfmo, yqve, huwdv, kl9, dpp, dpa2, euv4z, pi, rsfst, 4kuo, qbjqvm, gdkt, az4czn, anljofw, ox7hs, i3fet, nct1uh, ign8, 2szka, t5ktfz, ncuphj, cyeu, ykx, nvl8htj, r9, meltqtk, lse, oapbb, gqa3, bww7,