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. So a 1 db antenna with a 20 db gain preamp, is not going to perform at all like a 20 db antenna with a 1 db gain preamp. All the dimensions are shown on the picture below, but i have used the following materials in place of the ones shown on the picture. Download hf dipole calculator 12 wave wire dipole antenna. Just calculate for a full wave loop at the desired frequency and the reflectors are normally placed 14 wave length below. Feeding the antenna can be done at the director or at the reflector. Dipole antenna calculator software free download dipole. Eggbeater leo satellite antenna for 432 mhz 70cm or 2 meter.
The eb432 eggbeater offers exciting new performance characteristics for both fixed and mobile operations. Antenna modeling used to be the domain of scientists and engineers with very expensive antenna ranges covering acres and acres of land strewn with expensive equipment. I calculated the measurements for both qhas using john coppenss quadrifilar online calculator. Doug vk3um was a friend from our days at unley high school during the mid 1950s, a common interest was that of radio and electronics leading to our introduction to ham radio through the 288mhz band now no longer part of australian allocations. Note that the ground plane radials are offset by about 12 wavelength 10. Antenna, ve3sqb ham radio antenna design software programs. About eggbeater ii antenna the resource is currently listed in in a single category. Cb antenna comet db sbb7 comet db sbb5 egg beater paylod antenna jpole balloons cameras connectors carabiners data loggers gps heaters parachutes payloads power supplies radios forms. I made this antenna using a design by ea4cyq, it is quite easy to make and will only take a few hours to complete. The commercial version is used by radio amateurs to communicate via satellite. The eggbeater produces smooth omni directional horizontal polarity at. The coax jumpers made the other 2 unactive elements. By downloading the desktop plotting software and the plotfile below, you. With the proliferation of personal computers and affordable even free software, antenna modeling has become a.
This software can not only be used to design but also to find out antenna gain, stacking distance, and standing wave ratio swr. More info on this antenna at 203buildingmyeggbeateriiomnileo. M2 antennas satellite antenna packages will let you operate using amateur satellites and communicate with the international space station. An introduction to amateur satellite ground station antennas. This antenna beams into three quadrants without the use of a rotator. Because i wanted to be able to work some sats i liked to have an antenna for 70cm circular polarized. The eggbeater antenna is an improvement on the turnstile, using two loops, each around 220 cm long, so they form a 71 cm diameter circle. This link is listed in our web site directory since sunday mar 29 2015, and till today eggbeater antenna has been followed for a total of 1038 times. Home made eggbeater antenna hardware libre space community. The main category is amateur satellite antennas that is about amateur satellite antennas.
Vhf and uhf antenna systems 1821 fig23these drawings illustrate the dimensions for the 144mhz groundplane antenna. A horizontally polarized dipole is connected to the signal generator. This will require you to make two templates, one for the top of the pipe and one for the bottom. This assembly is based on the jerry, k5oe eggbeater ii design. The vhf uhf eggbeater antenna revisited on6wg f5vif. The eggbeater produces smooth omni directional horizontal polarity at the horizon. Kb1sf heres a partial view of the phasing coil and ground plane of the authors 2 m, m2 eggbeater antenna. If you are new to amateur satellites, though, all the options may be confusing, or worse, a disincentive to try the birds. Enter the desired frequency and select the desired calculation from the drop box. It was not possible to improve the gain above this value.
This formula to obtain the length of a halfwave dipole antenna will give a good ballpark value to start with. For beginners getting started on the amateur radio satellites. About easy eggbeater antenna the resource is currently listed in in a single category. For the top of the antenna you are going to have to drill 4 holes at right angles to one another. The software in the rpi is something different, i have no linux skills, so this will. A low noise preamp will help a good station, but it will not make a bad station into a good station. Several design attempts were made using slightly different configurations i. Using this software, you can design and build your own yagi antenna. Note the ground radials mounted underneath the phasing coil. Groundplane antennas for 144, 222 and 440mhz for the fm operator living in the primary coverage area of a repeate r, the ease of construction and low cost of a 14. It is placed at some distance in this case about 30 meters from the eggbeater antenna so.
M2 antennas satellite antenna packages satpack1 free. More info on this antenna at live websdr using thi. Later in the video he demonstrates some cubesats being received with his antenna, an rtlsdr and the sdrconsole v3 software. How to build a qfh quadrifilar helix antenna to download. Program good for 1 500 mhz, although intended for mf hf useage. At the delfi groundstation we use an omnidirectional eggbeater antenna guess why it has that name. Featured antenna from kai siwiak, ke4pt off center end fed dipole 6m 40m intended use for apartment dwellers and mobile deployment. Broadband circularly polarized antennas for uhf satcom one of the widely used satcom antennas is the conventional eggbeater antenna consisting of two cross circular loops coupled to a hybrid quadrature coupler.
This antenna is used to try and detect transmissions from directly over head, if the signal fades using the regular antenna. M2 antennas eggbeater satellite antennas eb144rk2m free. It was written for dos many years ago and ported to windows. Buy one elk antennas produce a 2m440l5 dualband antenna which is a periodic antenna buy one build his home made antenna is great. What i did was design a 3d printable drill guide suitable for use with. Works either in standard and metric units, and let you choose on material, and loopread more. Eggbeater antenna, amateur radio, satellite, vhf, uhf, mumbai amateur. I made this antenna using a design by ea4cyq, it is quite easy to make and will.
To design the antenna, you need to go to task design yagi menu. An introduction to amateur satellite ground station antennas there are many kinds of satellite antennas that will get you on the birds some better than others and allow you to have lots of fun. This antenna works like a charm on noaa, meteorm2 and iss. An eggbeatertpmetc are just two full wave loops 90 degrees out of phase. This link is listed in our web site directory since saturday apr 4 2015, and till today eggbeater ii antenna has been followed for a total of 1123 times. About eggbeater antenna the resource is currently listed in in a single category. This app does nothing more than the standard 468freq mhz type calculations. This antenna consists of two squares with the lateral sides longer than the up and down sides. Eggbeater antenna by dave houston a few years ago, when i was designing the bx24aht, tom becker, a radio engineer, suggested a turnstile antenna made of 300ohm twinlead. Log periodic antenna calculator full wave loop antenna 10m thru 80m from western canadas ham radio yl site loops from the arrl loop antennas plans for each amateur band loop antenna forum yahoo needs subscribing but lots of info here low band antennas from k3ky mac antenna master software magnetic loops for hf from w2bri. The antenna is designed to be fed with 50 or 75 ohm coax cable of most any length with a balun.
Eggbeater antenna for satellite communication, vu2ivv. Yagi calculator is a free antenna design and analysis software for windows. This calculator provides quick estimation of antenna size required for a given gain and frequency. This omnidirectional circularly polarized antenna is designed for coverage.
To help with this thomas n1spy has created a youtube video where he shows exactly how to construct a cheap eggbeater antenna made out of a few pieces of copper wire and an so239 uhf connector. Building my eggbeater ii omni low earth orbit satellite antennas for 70cm and 2m. The antenna calculator is a very simple and easy piece of software. You can see the eggbeater ii scheme in the annexe n.
But at a vertical angle of 40, there is a 2 db difference in favour of the eggbeater antenna. Measured return loss of this antenna is compared with measured return loss of the commercial eggbeater antenna and presented in fig. It is placed at some distance in this case about 30 meters from the eggbeater antenna so that the signal received on the smeter does not exceed s9. The measurements below are for building a simple dipole antenna. A low noise preamp gain only amplify what it is given. Jerry k5oe has authorized somenet to host these previously published antenna pages. These squares are phased by means of a piece of rg62 to match the impedance and get the proper polarization. All the dimensions are shown on the picture below, but i have used the following materials in place of. The swr minimum of the 2 m qha was close enough according to my antenna analyzer, and the impedance was quite close to 50 ohms. Arrow 146 antenna is certainly the must have to operate in portable. Shown below are the constructional details of the eggbeater antenna i built. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole.
The results are conveniently displayed in inches, centimeters, feet and meters. Presented here is a highperformance, circularly polarized omnidirectional antenna that is easy to build, easy to tune, inexpensive, and will work all the mode j low earth orbit leo satellites. A very basic program for calculating the length of each leg of a 12 wave wire dipole antenna. I constructed a new eggbeater antenna using an article written by jerry. Use the calculator in the site below taking your dimensions from the full wave loop results for the driven elements and then one half of the half. Eggbeater antenna vhfuhf part 2 on6wg f5vif summary note. I have built several of the traditional eggbeaters from plans floating. The internet is a good source for yagi antenna design. The other antenna was made by antenna specialist who are still in business and may still produce the super scanner.
Describe your experience with the m2 eb432 eggbeater satellite antenna and tell us why you give it the rating you did required. This link is listed in our web site directory since sunday aug 1 2010, and till today easy eggbeater antenna has been followed for a total of 4564 times. T he purpose of the calculator is to give you a quick overview of the feasibility of squeezing a loop into your available yard or apartment space. 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.