I came across the website of derek hilleard, g4cqm, containing a wonderful assortment of details to help make your next yagiuda project antenna a success. The weight of the wires and their coating of sleet, together with the weight of crossarms. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun. Slim jim and jpole antenna calculator build a cactus for any frequency.
Then use the resulting calculated lengths with the corresponding lettered segments on the diagram to cut your antenna to the right length. If you want to get technical, a real jpole is feed with 200 to 600 ohms. I specialize in a certain type of antenna called a jpole. This link is listed in our web site directory since friday dec 16 2011, and till today hpole multiband antenna has been followed for a total of 4521 times. Dx engineering, cushcraft, hygain, hustler, comtek systems, diamond antenna, and more. The jpole antenna is a quick and easy plumbers delight. Premium materials, stronger, smarter, more elegant. Antenna efficiency calculator antenna efficiency calculator, parabola antenna antenna eirp calculator enter power, antenna type, frequency, coax type, coax lenght, press for eirp antenna gain vs height this calculator computes the gain and elevation angles for various antennas that are mounted over a perfect or lossy ground. Antenna calculator wifi antenna extension loss calculator. The super jpole antennacollinear design mark twain. If you want to put this thing outdoors, do not use brass, as it gets brittle. Slim jim and j pole calculator american version m0ukd. The correct method of attaching the coax is the live to. Free online engineering calculator to find the dimensions of a yagi uda antenna for a given frequency range and length.
The above 3d radiation plot of the super j pole was modeled using mmana antenna analyser software by je3hht. The list will grow with your help so lets start and share the knowledge. Free online engineering calculator to find the dimensions of a cantenna canantenna. About h pole multiband antenna the resource is currently listed in in 3 categories. Free online engineering calculator to quickly estimate the geometric size of a jpole antenna. The j pole antenna is an endfed omnidirectional halfwave antenna that is matched to the feedline by a quarter wave transmission line stub. The cpole is a resonant antenna, whereas the hpole is non. This calculator is designed to give the vertical length height of a particular antenna, for the frequency and wavelength chosen. Ruggedly constructed one piece design, this j pole antenna will last practically forever. Free online engineering calculator to find the dimensions of a cantenna can antenna. Ruggedly constructed one piece design, this jpole antenna will last practically forever. Apr 16, 2019 coaxial dipole driver for yagiuda antennas. Accordingly the radiation patterns the antenna can be viewed as either transmitting or receiving, whichever is more convenient. Antenna calculation software the program consists of tabbed pages for various.
Online calculator jpole antenna designer changpuak. Erp calculator comes preprogrammed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. Slim jim and j pole antenna calculator build a cactus for any frequency. The jpole antenna is an endfed omnidirectional halfwave antenna that is matched to the feedline by a quarter wave transmission line stub.
Antenna geeks rejoice you have another great antenna web site to visit during your next armchair browsing session. This link is listed in our web site directory since friday dec 16 2011, and till today h pole multiband antenna has been followed for a total of 4521. Cantenna calculator aka circular waveguide antenna 802. The great thing about jpole antennas is their simple design and excellent performance.
The super j pole antenna for 430 450mhz was constructed and used for fm simplex and repeater operation at my previous residence in melbourne, victoria from 2002 2007 the super j pole antenna is a colinear vertical consisting of a number of half wave length vertical elements separated with halfwave length stubs tuning stub feed with a. Il progetto e stato pubblicato in radcom di maggiogiugno 2014 rsgb. Jpole antenna calculator enter the operating frequency and calculate antenna dimensions online. My name is michael, kb9vbr, and i carry a full line of vhf and uhf antennas for sale.
The j pole antenna is a quick and easy plumbers delight. Antennas are equipped with radio transmitters and receivers. This does not take into consideration the type or size of horizontal reflectors, of even if there is a need for them. Shop here for antennas, antenna systems, and antenna components from the best. Antenna design calculators category is a curation of 83 web resources on, parallel square conductor transmission line calculator, magnetic loop excel sheet, analysis of antenna mast strength and bending stress. Verticals covers all the common types with a coil calculator built in for the antennas that require them. The te11 cutoff frequency should be lower than 2412 mhz and the tm01 cutoff should be higher than 2462 mhz. However i highly recommend to follow my instructions, which are based on computer antenna simulation software 4nec2, to maximize performance. Calculate the dimensions for a slim jim or j pole antenna for hf, vhf or uhf including velocity factor. I specialize in a certain type of antenna called a j pole. The jpole antenna is a 12 wave antenna with a 14 wave matching stub. Yagi uda antenna calculator you may want to combine it with a folded dipole. Antenna calculator length of the dipole antenna calculation.
Frequency mhz velocity factor see text vf actual wavelength inches wavelength considering velocity factor inches a. The multiband hpole vertical wire antenna article was forwarded to me by my good friend hermann stein, hb9crv, who is also my qsl manager. A touch of class, the windom and the jpole by glynn e. The j pole antenna is a 12 wave antenna with a 14 wave matching stub. The measurements below are for building a simple dipole antenna. The results are conveniently displayed in inches, centimeters, feet and meters. Link budget calculator a towertotower, overtheair javascript calculator, by wireless connections. The main category is multiband antennas that is about multiband antennas. The radiation pattern polar diagram for a half wave dipole antenna shows that the direction of maximum radiation or sensitivity is at right angles to the axis of the rf antenna. The feedpoint impedance can be altered by changing the ratio of the diameters of the vertical. This page contains various javascript based calculators for electronics. Some swear by it but i am sorry, i have never heard one that worked that well. Enter the desired frequency and select the desired calculation from the drop box.
Function of electrical pole is that of a cantilever beam rather than of a column. This app does nothing more than the standard 468freq mhz type calculations. Lets see some antenna calculator and antenna design software that will help you design faster and better. Transmitters provide oscillating electrical energy on to the antenna which radiates them as electromagnetic waves. Online physics calculator that calculates the long, short section, feed point, spacing dimensions values for current frequency. Program good for 1 500 mhz, although intended for mf hf. D is the distance from the dipole to the reflector. Works either in standard and metric units, and let you choose on material, and loop. Please post a comment if you know other great software or links with information about antenna calculator and design programs. Having had a gem quad hf 201510m for a few years, back in the early 80s, i can testify to the quads slight advantages over a tribander yagi with the same number of elements. Buck rogers sr 68 years as k4abt the jpole has been around since the early days of ham radio, and is a direct descendant of the windom like the windom or zepp, the jpole is a spinoff, or a modified windom for vhf and uhf. External forces are due to dead, ice and wind loads, which with the exception of the pressure on the pole must be transmitted to the pole by the wires.
This page can be used to calculate the element and radial lengths for a 14 wave ground plane antenna. Navigation kb9vbr jpole antennas amateur radio, land mobile, scanner, low power fm, and airband antennas. H pole definition is a telegraph pole built up of two parallel poles braced together. About hpole multiband antenna the resource is currently listed in in 3 categories. The great thing about j pole antennas is their simple design and excellent performance. Nanovnah 900 mhz upgrade nanovna based on edy555, use the odd. Matching to the feedline is achieved by sliding the connection of the feedline back and forth along the stub until a vswr as close as possible to 1. This formula to obtain the length of a halfwave dipole antenna will give a good ballpark value to start with.
Lets see some antenna calculator and antenna design software that will help you. The super j pole antenna collinear design below is a javascript for calculating the lengths of tubing to be used for the construction of a super j pole. This calculator enables you to test the design of an octagonal loop antenna and to answer what if questions until you arrive at a design that meets. Antenna calculator dipole antenna calculator, yagi antenna calculator, find the length of a dipole, 3 element yagi. Greyline dx flagpole antenna and dx vertical antennas for 1606m. As shown in figure 1, the antenna is symmetrical about the feed point and is known as an open folded dipole. Basics the antenna consists of a vertical halfwave dipole that has been folded virtuthe c pole a ground independent vertical antenna kf2yn takes the vertical to new heights with this folded design that doesnt require a counterpoise. Works well with handheld ht radios, base stations, and repeaters.
Dec 29, 2015 a very basic program for calculating the length of each leg of a 12 wave wire dipole antenna. Through these software, you can design various types of antennas like yagi, j pole, parabolic, quagi, super scanner, etc. Checkpole is the only commercially available integrated monopole analysis and design package. Yagistress the ultimate mechanical design software for antenna designers. Antenna calculator dipole antenna calculator, yagi antenna calculator. The super j pole antenna is a colinear vertical consisting of a number of half wave length vertical elements separated with halfwave length stubs tuning stub feed with a folded matching stub. Here is a list of best free antenna design software for windows. A very basic program for calculating the length of each leg of a 12 wave wire dipole antenna. Free online engineering calculator javascript to quickly find the. The hplane radiation pattern for this antenna is virtually omnidirectional. Antenna, ve3sqb ham radio antenna design software programs. N4ujw antenna design lab ham radio antennas design 0r. Arrl antenna projects web page includes beamsyagis, dipoles, jpoles, loops, mobiles, quads, slopers. By kurt andress, ni6w by kurt andress, ni6w ytad by n6bv determine antenna gain based on the slope of terrain.
Antenna design freeware 1d and 2d arrays from mei software. Fortify your existing antenna or build your own with highquality brackets, clamps, tubing and supports from dx engineering. The most common material for home building small ham radio loop antennas is common copper plumbing pipe. Its a light magnetic loop antenna calculator that run on ms windows, and allow to calculate capacitor values and voltage based on loop circumference, conductor diameter, desired resonant frequency and the operating power. Erp calculator is an ham radio software utility designed to perform a sidebyside comparison of two ham radio antenna systems. This calculator is designed to give the horizontal length of a particular dipole including tees antenna, or one side of it, for the frequency chosen. Jul 03, 2014 erp calculator is an ham radio software utility designed to perform a sidebyside comparison of two ham radio antenna systems. For 2 meters, the coil is 4 turns of coax at 5 inches in diameter. The super jpole antennacollinear design below is a javascript for calculating the lengths of tubing to be used for the construction of a super jpole. Careful selection of quality probes joined with the raspberry pi offerings yields a wireless e and h field sensor for accurate antenna analysis. Effective jan 2016 i will be changing web hosting providers and as such a complete redesign of my website using a content management systemcms to better design and host the site. The multiband h pole vertical wire antenna article was forwarded to me by my good friend hermann stein, hb9crv, who is also my qsl manager.
Hence here is the double biquad antenna and biquad antenna calculators for handmade antenna based on average data. The antenna calculator for halfwave dipoles enter your desired frequency mhz of operation i. On most of the j pole designs out there, a choke should be used as close to the feedpoint of the antenna as possible to help prevent rf on the feedline and creating difficulty with swr readings. Antenna is an electrical device used to convert electrical power in to radio waves and vice versa. Stealth flagpole antenna and dx vertical antennas for ham radio, at home or hoa. Julian date calculator calculates jds for a given month. Each antenna design software is slightly different from each other as each software design some specific types of antenna. To use the following calculator, enter your desired operating frequency in the target frequency box and click the calculate lengths button. Download hf dipole calculator 12 wave wire dipole antenna.
658 42 494 1546 730 280 1069 936 597 259 1525 120 260 1305 445 663 1443 716 603 825 124 1340 832 1455 837 1015 815 821 62 1177 1415 1040 165