10 Meter Ground Plane Antenna Plans

application and achieved dual band response by using asymmetrical ground plane. If the ¼ wave antenna were to be placed at ½ wavelength distance above the ground plane (or 180° in phase) with a large gap between, then the antenna would not work effectively. Judd found the Slim Jim produces a lower takeoff angle and better electrical performance than a 5/8 wavelength ground plane antenna. There are usually four radials, three being a minimum, but you could use up to six. Ni4L Antennas & Electronics LLC Products; No ground plane or counterpoise is needed. If you can get the antenna 1-2 wavelengths above ground, a horizontal antenna may be good for DX OR. By Don HC4/W4BWS Get on the air on 20, 17, 15, 12 and 10 meters with one vertical ground plane antenna! Editor note:. A ground wire to the grounding screw on the pass through panel by MFJ in the double hung window completes one side of the loop. 92λ in size. For best results, triangular loops should be supported apex-down. Repeat steps 2 and 3 for the other three ground plane elements. In a monopole antenna, the radiation pattern of the monopole plus the virtual "image antenna" make it appear as a two element center-fed dipole antenna. A resonant length for the inverted V dipole may be found to be 4 - 5 % longer than calculated from this formula, depending on ground (and other nearby object's) conductivity conditions. Cushcraft AR-10 - 26-29. But a great antenna company called Solarcon has built a very unique antenna called the I-MAX 2000. The drop off on the horizon is only a dB or so and insignificant. Easy to build ham radio dual band 2 meter and 70 centimeter ground plane antenna. The antenna is unaffected by either and I have used both at different times. Homemade 11 Meter Antennas homebrew 11 meter antenna Condos/Homes 640 x 902 · 149 kB · jpeg 10 Meter Vertical Antenna This DIY 10 Meter Vertical preparation know how to solar 358 x 686 ·. It allows use for the antenna a cheap TV-Coaxial cable. (3) Whip with 45 degrees slanting ground plane radials. After having great success with our tunable tip antenna design, we captured all of the features in our 10-meter antenna. Old TV Antenna Scheme. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. com or leave a comment below this post. Ahh, the good old quarter wave ground plane! This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. amateur radio band. Locate the radiator. Our antenna is now complete except for a way to mount it. What Kind of 10 Meter Base Antenna Should I use for 10 Meter SSB? 10 meter Antenna for 10 SSB. For more information about this antenna:. This simplified arrangement has several advantages, including a shorter ground distance between the ends. A wide variety of 10 meter antenna options are available to you, such as free samples, paid samples. To build a 223-MHz antenna, cut three 17-5/8-inch pieces. 9” 5/8ʎon 2 meters is 50” and impedance matching is provided by a low inductance coil The above combination provides a base-loaded vertical antenna that works on 6 meters. The horizontal radiation pattern is a circle where the antenna radiates equally well in all directions. The larger the area of the loop the better it will work. Most often, antenna gain is described as compared with a half wave dipole, but in this case I will use the quarter wave ground plane as a reference to zero gain as we are talking about vertical omni antennas. I see a quarter wave horizontal mobile antenna for the 20 meter Ham band. 1/4 wave antennas need ground planes, 5/8 waves generally don't need a ground plane (design and function - too complicated too discuss here). WizardsOf12 on. Because of the very small dimensions of the. A concept for a Stage-IV experiment, CMB-S4, is emerging to make a definitive measurement of CMB polarization from the ground with O(400,000) detectors. CB antenna, a homemade ground plane or a 1/2 wave dipole will. A wide variety of 10 meter antenna options are available to you, such as free samples, paid samples. PURPOSE: The FG-648 series, "No ground plane" (NGP) CB antenna kits were specifically designed to solve the problems associated with the lack of ground plane (counterpoise). SkyLab T233 10 Meter Commercial Base Antenna = 1/4 wave ground plane. Portable End-Fed 160-10 Meters Dipole Antenna. ) but it is worth it. IF you'd like your question answered on the show, please drop me an email at [email protected] For a dipole antenna, the pattern looks like a doughnut. Link 1) GPA models on SIRIO website. A Simple Experiment to Demonstrate How Ground Plane Radials Affect the Performance of An Antenna A 1/4 Wavelength Monopole Whip was tested under following conditions: (1) Only Whip, no ground plane radials. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of 10 meter antenna respectively. Find great deals on eBay for 10 meter ground plane antenna. Updated 05-Dec-2005 12:53 [back to W1TR Antennas and QTH] [back to W1TR Home] The 40 meter ground plane is constructed from #12 stranded insulated wire available in most hardware stores. Ground Plane Antenna You Can Build The Ground Plane vertical omni directional antenna is very easy to build with just some #12 solid copper electrical wire and a UG58 type N chassis jack. It consists of 4 fiberglass radials at 70 inches each. pete ( 10 miles ) from here. 160-meter ground plane antenna consisted of a 135-ft wire attached at the 118-ft level of the tower that has two Cushcraft 2-element 40-meter beams. The 5/8 wave antenna takes some of the energy from its top and distributed to the side, so that it covers more ground radius. Driven element is excited directly via feedline, all other elements excited parasitically. It is a design that performs well and exhibits low input impedance, making it ideal for use with ham equipment without the need for. A basic antenna like a dipole is self-contained and requires no ground plane. IF you’d like your question answered on the show, please drop me an email at [email protected] But a ground stake by itself will not be a sufficient signal ground. If you need a simple means to test the waters on 10 or to keep track of all the local operation, the L-antenna just might do the job for you--cheap and easy. The Cliff Dweller is a coiled wire antenna, suited to use on 10-80 meters, though my antenna tuner seems to be able to get me reasonable performance on 160 meters also. You're in luck, 10-meter verticals are a piece of cake. I had started off with a 1 meter cable (which resonates at 100MHz and harmonics) and it made the measurements virtually useless. This particular ground plane is constructed out of an SO-239 chassis connector, so the radiator is 2 Meter VHF Quarter Wave Ground Plane Antenna - Ham Radio Q&A The 1/4 ground plane might be just the ticket. The Antenna Specialists ASP-600 half wave to 5/8-wave ground-plane came in three frequency splits. You may have noticed a pattern developing here. The antenna is designed to be fed between its base and the ground plane operating at its 1/4-wavelength. It'll get out about as good as a ¼ wave ground plane CB radio antenna if you get it up high and in the clear. These antennas usu-. 15 dBi Sirio GPA 40-70 is 1/4 λ VHF base antenna for professional and HAM 6m bands 40MHz - 70MHz. Depending on the mobile antenna, the roof is ground plane, or in the case you cited the gutter acts as the ground plane, but gives you a skewed reception pattern. plans and materials for an antenna to build and all but one reply tells him he doesn't want one or you should buy this one or he's stupid for considering one or I can get into this repeater with that antenna, bla, bla bla. The other side goes to the center of a coax connector on the MFJ panel. The distance between one point to another adjacent point in a wave is known as the wavelength. Jessop, G6JP suggests element lengths of 0. When we speak about antennas, often people thinks there are a lot of related magic things about that and never try to experiment in build something. The antenna is a Wilson Silverload tunable antenna with the extra ground plane cable at the threaded end of the antenna. I had build other SO-239 connector antennas before, in fact one of my first antenna for 2 meters was one of this type and I soldered all of it and just used 12 AWG bare solid wire. IMPROVED PERFORMANCE OF A RADIO FREQUENCY IDENTIFICATION TAG ANTENNA ON A METAL GROUND PLANE Approved by: Professor Gregory D. 86 Mhz 3rd Harmonic Halfwave in space is: 9. All else being equal, the coil losses will more than double, and therefore the input impedance will be close to 50 ohms (no matching needed). For 17 meters experiment I made a 2 element beam similarly. 95 This base antenna can be set up inside a home, on a job site or anywhere that. I wanted to make something simple that would be reliable and not require a balun or any impedance transforming, so I decided to build a quarter wave ground plane antenna for home. A quarter-wavelength antenna is easy and inexpensive to build and can be an effective antenna with a low angle of radiation (that is, power is radiated out, not up). CB antenna, a homemade ground plane or a 1/2 wave dipole will. But it is a lossy antenna on 11 and 10 meters. 24 meters of wire or 17. A conductive metal screen such as chicken wire is suspended above the earth or laid on the ground to make a big counterpoise (artificial ground-plane) for the antenna system. To the rescue, would be an external antenna. 5º pitch and a ground plane of 0. Short skip, cloud warmer antennas are good for working close in – stateside and the Caribbean… use horizontal polarization. The formula for the elements is ((460/f) / 2) where f is the frequency. Tunable Tip Mach 10 – 10 Meter – Antenna 3 or 4 ft. I had build other SO-239 connector antennas before, in fact one of my first antenna for 2 meters was one of this type and I soldered all of it and just used 12 AWG bare solid wire. Testing has proven that it causes significantly stronger signal field strengths compared to other 10 Meter and VHF Low Band commercial antennas. Design of a 40 meter Vertical. The crowded space above the set required a compact multi-band dipole, and the CHV-5X was selected to solve the problem the minimal space presented. 59 Feet) of wire for the ground plane i cut each ground plane for 1. The SWR should be 1. 1 Sundry parts - wire, terminal lugs 10 Meter Vertical Ground Plane Antenna. DX GROUND PLANE ANTENNA. (Note that it won't necessarily be a simple curve with one valley — but unless you have an antenna of totally the wrong size or a deliberate multiband antenna, that won't likely happen here. The 10-80 meter ground plane is a huge antenna weighing 29 lbs. Simple CB Base Station Antenna: This is a simple base station CB antenna You can make in 30 minutes out of a bit of PVC pipe and fittings, some wire and a SO239 coax connector and a piece of coax to connect it to your radio. 80-meter dipole and I really enjoy CW on that band. Ahh, the good old quarter wave ground plane! This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. As shown in Fig. It also worked well. feed would be mounted over a 1. Figure 4 - λ/4 ground-plane vertical with four radials. Figure 2 shows the radiation pattern provided by a typical short helix, 4 turns with a 12. For example, at 28 MHz an 8' ground wire (or any wire for that matter) is approximately one-quarter wavelength long. antenna is readily apparent, The ground plane is made up of three 12-foot lengths of chicken wire, each 4 feet wide, which are bonded along the edges at about 6-inch intervals. 2 GHz; Connect the other end of the coax cable to a 50 ohm 1. 5 / 10 = 14. If portability is not important, it is best to bond all of the joints in. But it is a lossy antenna on 11 and 10 meters. All of it part time, evenings after work and weekends. 80 meter loop frequency plot The table above makes it fairly easy to choose the feedpoint impedance for the 80 meter loop antenna. Most hams are familiar with the quarter wavelength ground-plane antenna design. I like to use a home made current choke to keep RF from coming back on the feedline. A concept for a Stage-IV experiment, CMB-S4, is emerging to make a definitive measurement of CMB polarization from the ground with O(400,000) detectors. The half wave antenna (mounted 1 foot above ground) shows only 1. This puts less of the antenna parallel with the ground and increased the effective height. and 2 Meter radios. It consists of 4 fiberglass radials at 70 inches each. Connect a short length of coax to the antenna socket. Two weeks to design and build (and rebuild) the elements, get the thing layed out and bases installed (the two existing bases had to be dug up and moved). This vertical antenna has no lossy traps or coils to burn out. Tuning the antenna is done by means of a tuning sleeve of unique and patented design which slides over the length of each resonator. 4 m above ground. The ¼ Wave Droopy Ground Plane 2 Meter Ham Radio Antenna Robert Richardson Emergency Communication 39 In the past we've talked about the many benefits of Ham Radio , and how every good survival plan should include some type of emergency communications equipment. The crowded space above the set required a compact multi-band dipole, and the CHV-5X was selected to solve the problem the minimal space presented. Aside from the ease of tuning, the patented design of our tunable tip broadens the antennas bandwidth to keep SWR lower over more channels. Selecting the right antenna gain for the application is the subject of much analysis and investigation. power load 200 W, connector PL female. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. 80m vertical antenna. MFJ-1756 Instruction Manual 6 Meter Ground Plane Antenna 8 TUNING THE ANTENNA After the antenna base with radials has been secured to the mast, refer to Chart 1 to tune the antenna to the desired frequency. The MJF antenna has a matching network at the base of the antenna that provides the right impedance so the HT can drive the ½- wave element without a problem. WizardsOf12 on. 2 GHz; Connect the other end of the coax cable to a 50 ohm 1. Today we’re going to build a simple ground plane for the VHF 2 meter band. There's a hidden factor at work here too. These are the grounds that provide the antenna counterpoise (true ground plane), and afford static bleed to NOT allow lightning's near field (DC component) induction, or just general DC static electricity buildup on he wire, to pass along to your radio. Mounting bracket 3. My goal is to place it at approximately 1. It is a design that performs well and exhibits low input impedance, making it ideal for use with ham equipment without the need for special matching techniques. The 10-80 meter ground plane is a huge antenna weighing 29 lbs. 59 Feet) for the hot element now i had a spare 2. Four 10′ long ground plane radials are attached to the base at the ground wingnut. It has an end fed 5/8 wave length radiator with extended I-max (current maximum) center section. The Maco V 5/8 Ground Plane antenna is a well built aluminum antenna that offers very good performance characteristics. There are two basic choices: a set of ground radials, or a square ground plane (also called a "ground screen"). Expected elevation angle at 20 meters: 19 degrees, lowering to 12 degrees at 10 meters (lower if antenna elevated) Physical Design The use of 7 six-foot sections of 0. Amazon's Choice for ground plane antenna Nagoya GPK-01 (21" Radials) NMO Mount Ground Plane Kit for Base or Field Use, SO-239 Connector, Mounts to 2" Pole, Mast, Pipe 4. The half wave over a quarter wave is better than any other half wave antenna (including an Antron 99. Homemade 11 Meter Antennas homebrew 11 meter antenna Condos/Homes 640 x 902 · 149 kB · jpeg 10 Meter Vertical Antenna This DIY 10 Meter Vertical preparation know how to solar 358 x 686 ·. They are of course not suitable for flying (unless you want to loose 30 knots). The representational scheme used is similar to that taken from [7]. 31 meters (or 4. There is a mid-power model available in a 43 ft length that provides 80 to 10 Meters operation. It also worked well. 1/4 2 m 2_meter 70 cm 70_centimeter amateur amateurradio amateur_radio ant antenna BNC brass coax gp antenna ground ham Ham_Radio jig plane quarter quarter wave radials radio rod wave yoke License. (3) Whip with 45 degrees slanting ground plane radials. This does require some nuts and bolts and scrap metal. It is often the first antenna they buy or build for use on 2 meters after receiving their technician license. With that said, go look up the cost of one that is being sold in the magazines and on the web. And one of those can be as simple as five 19 inch pieces of wire and a So-239 connector. The trusted news source for power-conscious design engineers powerelectronicsnews. I forgot to mention, but it is featured in the drawings, the radial plate is pop-riveted to the SO-239 with either SS or AL 1/8″ pop-rivets. 2, this scheme is comprised of 14 elements, each one encoding a length and spacing value. plans and materials for an antenna to build and all but one reply tells him he doesn't want one or you should buy this one or he's stupid for considering one or I can get into this repeater with that antenna, bla, bla bla. The 10-40 meter high performance groundplane freestanding vertical antenna is a rugged multiband vertical antenna. The revolutionary COMPACtenna 10m/2m/440 uses a patented design which includes magnetic-field-enhancement. Add to Cart. FireStik Base Antennas are available for CB, M. A quarter wave ground plane is nice and small so it can be made "stealth". Since the antenna is resonant, there is little reactance and no high voltages. Without Radials. A 1/4wl ground plane would seriously outperform the I-MAX 2000 or any other 1/2 or 5/8th wl antenna that does not have a large ground plane. These true full size 5/8 wave, 10/12 meter Hy-Gain SPT-500 Vertical Antennas were a legend in the '70s--now they're back to claim that status once again! Find Hy-Gain SPT-500 Super Penetrator HF Vertical Antennas SPT-500 and get Free Standard Shipping on orders over $99 at DX Engineering!. After setting up a 1/4 wave vertical ground plane for 10 meters which worked pretty well, I decided to extend it up to 5/8 wave to get a lower angle. While a quarter wave ground plane isn't a top performer, it does have the advantage of being omni-directional. The standing wave ratio was 5 to 1 with or without the ground plane cable grounded. 5m vertical wire antenna (supported on a 10m fishing pole) fed against 10 buried radials, and terminated with differing values of resistive loads. Result on his meter there was NO change from a 18 foot tall antenna with 4, 9 foot radiles to the astroplane ( clone ). ZEROFIVE-ANTENNAS 10 THROUGH 40 METER GROUND PLANE VERTICAL product reviews by real people like you. A multi-depth choke ring configuration for ultra-wideband antennas was first proposed almost 20 years ago by Thomas L. design issues. I received my tech. Simple Ham Radio Antennas: Ham Radio 10 Meter Ground Plane Antenna. Antenna design can be put off until after the industrial/mechanical design. Next step for me is a 10 meter antenna - I haven't decided what to build yet. Test and adjust for a 50 ohm impedance. A long time ago, I purchased a Solarcon Antron 99 antenna for my propagation beacon. The quarter-wavelength, ground plane antenna is made up of one vertical element, called the driven element, and four radials. A single band 1/4 wave ground plane vertical antenna can be installed atop a tower. Vertical Dipole Portable Base Mobile Alpha Magnetic Loop antennas. Expected elevation angle at 20 meters: 19 degrees, lowering to 12 degrees at 10 meters (lower if antenna elevated) Physical Design The use of 7 six-foot sections of 0. This allows the extremely short antenna to perform amazingly well for its height. Dipole, Inverted V and Ground Plane Antenna Calculators Online and downloadable Dipole, Inverted V and Ground Plane Calculators. In free space the center-fed half-wave antenna has an input impedance that is a close match to 50 ohm coax and to most radios that have a 50 ohm output impedance. Helical antennas invented by John Kraus give a circular polarized wave. Cut your radiating element about 8'3" tall and run a dozen or so 5- or 6-foot long ground radials, and you'll have a pretty good antenna for 10-meter SSB. Antenna performance relies heavily on antenna size and frequently on the size of printed-circuit-board (PCB) ground planes. I used an MFJ antenna analyzer to obtain my measurements. I suggest you to tighten all radials in the same quadrant, each 10° apart to prevent coupling, in order to get a common directivity on all bands. For our 15 and 20m verticals we applied 16 radials for each antenna, each radial being about 6 meters long. 86 Mhz 3rd Harmonic Halfwave in space is: 9. 20 METER GROUNDPLANE Most hams are familiar with the quarter wavelength ground-plane antenna design. They are of course not suitable for flying (unless you want to loose 30 knots). 30 Meter (10. I have a 5/8th over 5/8th vertical collinear antenna hanging in a tree at some 30 odd feet high, but I never heard anything on it, except on FM. Portable End-Fed 160-10 Meters Dipole Antenna. Easy to build ham radio dual band 2 meter and 70 centimeter ground plane antenna. For a dipole antenna, the pattern looks like a doughnut. This antenna about -2 dBd gain maximum. Is a CB and amateur base antenna. I wanted to make something simple that would be reliable and not require a balun or any impedance transforming, so I decided to build a quarter wave ground plane antenna for home. The missing part of the dipole is supplied by an electrical mirror of sorts, called a ground screen or ground plane. vertical base antenna, a ground plane antenna may be an effective alternative. The revolutionary COMPACtenna 40mTHRU440 uses a patented design which includes magnetic-field-enhancement. Our club regularly has a J-Pole antenna party where the new hams can socialize with other hams and get a good antenna to boot. In this video from Dave Tadlock (KG0ZZ), we get a step-by-step tutorial on how to design, build, and use a 10 meter ground plane antenna. I set each ground plane first at 1' below ground, then at the surface, and finally at 1' above ground. I friend made this in an hour. But for 40 meters we'll look at a typical element length of 33. If you received the antenna in one of our kits it must have been a Powerful Outdoor Antenna Mohu’s latest TV antenna innovation comes in the form of the stylish and powerful Crescent outdoor antenna. Figure 6 shows the vertical radiation pattern. Quarter wave with ground plane 3. antenna operating around 600 MHz is presented to validate the design procedures and simulations. A no ground plane antenna is designed to use the ground or water to transmit horizontally. All end fed antennas require the use of an wideband antenna tuner. Like any such antenna it requires a good counterpoise (radials, conducting surface). Antenna design can be put off until after the industrial/mechanical design. On the continuum of antenna designs between a ground plane antenna and a coaxial vertical dipole, why is it that sometimes there is a well-defined optimum size of the ground plane, or rather the antenna element which is not pointing upward, whereas sometimes it doesn't seem to matter much?. Fully extended, the antenna is 42. An inverted vee with a 40-foot (12 m) apex elevation requires only 115 feet (35 m). Crescent boasts a 75 mile range and has 4-in-1. But it has room for improvement. 20 METER GROUNDPLANE Most hams are familiar with the quarter wavelength ground-plane antenna design. 058 slip-fit aluminum tubing will allow easy adjustment of the feedpoint (and overall length) by varying the overlap of tubing sections. UHF BASE STATION GROUND PLANE ANTENNA MODEL : UH-2401 Specifications GAIN 6. Jessop, G6JP suggests element lengths of 0. Short 20 meter vertical antenna. The lead-in goes un-der the window sash into the shack. In a monopole antenna, the radiation pattern of the monopole plus the virtual "image antenna" make it appear as a two element center-fed dipole antenna. Antenna Design and RF Layout Guidelines www. This month I decided to build a 2 meter 5/4 wave antenna. Hy-Gain RRK-88 Radial System Kit available at your Hy-Gain dealer. Tuning the antenna is done by means of a tuning sleeve of unique and patented design which slides over the length of each resonator. We are talking about RF (signal) ground on this page. After having great success with our tunable tip antenna design, we captured all of the features in our 10-meter antenna. against earth or a full sized vertical antenna is the loop’s freedom from dependence on a ground plane and earth for achieving efficient operation; this unique characteristic has particular profound significance for small restricted space antennas operating on the 80m and 160m HF bands. The kit is fine if you just want to use the antenna for 10 and 11 meters. In the past, most people preferred drilling a hole in the center of the roof or trunk to provide the best ground plane. Unfortu-nately, as you go down in frequency the. Old TV Antenna Scheme. This makes the 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS, and even every day. The I-MAX 2000 has a ground plane radial kit available. 1/4 Wave Ground Plane Antenna. *H 4 Figure 3. As you can see in this photo, the fittings from the tie strip have been both bolted and soldered onto the flange of the SO-239. 00! Wow! These guys are making some good markup! Features of the K0WA 40 meter verticle. Then he had RG-58 coax running from the balun to the shack. I use this type of antenna extensively in the field with my little single band QRP rigs. This unit is a Black 'Phantom' style Omni-directional antenna with N-Female-permanent 5/8 Inch mount operating at 902-928 MHz range. I used the good 50 ohm coax. It is a design that performs well and exhibits low input impedance, making it ideal for use with ham equipment without the need for. 960MHz to 29. The 43 foot vertical antenna is a popular height being promoted by several antenna manufacturers for 160 to 10 meters. Have your J-Pole and ground it too The above data not only confirms the problem with mast currents, but confirms a theorized solution with strong potential. The MJF antenna has a matching network at the base of the antenna that provides the right impedance so the HT can drive the ½- wave element without a problem. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. The body of the vehicle and. 2 wl above real ground. Thank you for all those questions, please keep them coming. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. 0 m) above ground. This is a NEGATIVE gain antenna at low angles. Omni antenna with ground plane 3. Design Your Own Dipoles And Inverted Vees: Double Extended Zepp NVIS Antenna Calculator: Design Your Own Ground Plane: Design Your Own Quad: Design your Own Super J Pole: Dipole Inverted Vee Antenna Design: Dipole Antenna Calculator: Discone Antenna Calculator: eHamRadio Antenna Calculator: Electronics Converters and Calculators: EZNEC antenna. magnetic loop antennas until you arrive at a design that meets your needs. The two most common were ASP-600B (30-40 MHz) and ASP-600C (42-54 MHz). 2 / 440 sleeve vert. Dipole, Inverted V and Ground Plane Antenna Calculators Online and downloadable Dipole, Inverted V and Ground Plane Calculators. 4m long & 1. 64 wave on the 10 meter amateur band. 10 Meter and 6 Meter Rotatable Half-Wave Dipole Antenna The half-wave center-fed dipole is one of the most popular antennas in use today. I had started off with a 1 meter cable (which resonates at 100MHz and harmonics) and it made the measurements virtually useless. In this video from Dave Tadlock (KG0ZZ), we get a step-by-step tutorial on how to design, build, and use a 10 meter ground plane antenna. It is a design that performs well and exhibits low input impedance, making it ideal for use with ham equipment without the need for. Typically has 6 db (approx), over any other 5/8 wave antenna. 20m Elevated Vertical Antenna - G8ODE. As you design your antenna, you must decide where you want your signal to go. I forgot to mention, but it is featured in the drawings, the radial plate is pop-riveted to the SO-239 with either SS or AL 1/8″ pop-rivets. 6 METERS ANTENNA · resonant antenna design on 6, 10, 15, 20, & 40 Meters and a Project by G3JVL - The G3JVL 6 Meter ground plane vertical is a compact. The RSGB VHF UHF Manual by G. I have used it on well over a hundred T-hunts. 59 Feet) of wire for the ground plane i cut each ground plane for 1. Base Station CB Antennas Filter Products Ground-Plane Kit for Antron 99. The Hustler 5-BTV is a five band trap vertical antenna adding 75/80 meter operation to the 4-BTV. Radials & Counterpoise - Using them with Smartuners™ The SGC Smartuner gets energy into an antenna, but the design of an antenna is what controls what happens to the RF energy from there. The ground plane antenna when packed comes with ground radials removed from the antenna body for ease of packing and transportation. The distance between one point to another adjacent point in a wave is known as the wavelength. The Laird B4505CN is a 32 inch chrome base loaded mobile UHF whip antenna with NMO base and NO ground plane required. How to Design a Simple Antenna. When the antenna is erected and the ground plane is in place, grab your antenna analyzer or VNA. Thank you for all those questions, please keep them coming. For instance, a half wave vertical can be stated as having 3db of gain over a quarter wave. Antenna element 2. Norwalk Electronics guarantees no single other 6 meter omni directional antenna in production can outperform this 5/8 wave. I am basically looking for an omnidirectional 2 meter antenna with 6-8 dbi gain. The antenna is not a new concept , many Radio Amateurs have "Home brewed" this type of antenna for the 2 meter band over the last three and a half decades. These radials provide the antenna system with an artificial ground that is necessary to bring the antenna into balance with the radio. 1/4 wave antennas need ground planes, 5/8 waves generally don't need a ground plane (design and function - too complicated too discuss here). Super wide bandwidth means more time operating ,and less time stuck on a frequency your trap vertical is tuned for. The antenna is a Wilson Silverload tunable antenna with the extra ground plane cable at the threaded end of the antenna. Reports are excellent. 85 dB over the ground plane antenna!. This omnidirectional antenna ofers 5 dbi gain and 100 watts max power and operates in the 450MHz - 470MHz range. The Apex exhibits high efficiency across the ultra wide band and is backward compatible with Pattern Type: Omnidirectional. Graphic Design - G8ODE 3 Mar 2009 iss 1. Base Station CB Antennas Filter Products Ground-Plane Kit for Antron 99. The radiation patterns of a 1/4-wave ground plane model have been employed to approximate the patterns from a mobile whip in the 10-20 meter range. Not having a lot of room for 40 meter beams, I decided to use the space I do have, which is a long wooded fence in the backyard. It allows use for the antenna a cheap TV-Coaxial cable. Simple 2 Meter Ground Plane Antenna Project With PVC Support by KC0YNR, Malcolm Here is a very simple 2 Meter Ground Plane project that can be used as an emergency antenna, in limited space, for quick and easy setup on field day, camping, or just plain outdoor fun. In a pinch, a 2 meter 5/8ʎmobile antenna can be used on 6 meters (I have!) 1/4ʎon 6 meters is 55. Each radial is evenly spaced (90 degrees apart from each other) around the vertical element. It is often the first antenna they buy or build for use on 2 meters after receiving their technician license. The drop off on the horizon is only a dB or so and insignificant. They are very easy to build and will perform better than the antennas that come with most handhelds. Reports are excellent. 1 | P a g e 4s6ggs C Right 2. They are often convenient and easy to use. net is a Web site dedicated to ham radio (amateur radio). Not having a lot of room for 40 meter beams, I decided to use the space I do have, which is a long wooded fence in the backyard. What's the right length? 574' feet for 160-15 meters (10 meters also, but with a short feedline). What is a good *simple* 10 meter antenna? so really 90 feet is over kill for a horizontal antenna. That’s the the 1/4 wave ground plane antenna.