Pdf antena yagi uhf 5 elementos 144mhz

The qm7 antenna is a simple 7 elements yagi with 3. Antena yagi direccional, 375405 mhz, 5 elementos, 9 db, 300 watt. Although the yagi has become particularly popular for television reception, it is also used in many other applications, both domestic and commercial or professional. At vhf and uhf, it is possible to build yagi antennas with very high gain15 to 20 dbon a physically manageable boom. Cubica rectangular 3el 10m revista ure agosto septiembre 20, en pdf. Introduction i have found antennas which fold up quickly to take less space in the car to be useful in vhf uhf portable operating. Controlled impedance cheap antennas kent britain wasvjb. It has gone through a few revisions over the years this is version 4 and is now a 6 element yagi uda. This link is listed in our web site directory since tuesday feb 17 2015, and till today 5 element lfa yagi for 6 meters band has been followed for a total of 729 times. We offer a huge selection of yagi antennas, including crosspolarized and circularly polarized, from top brands like m2 antennas, cushcraft, mfj, and diamond antenna. Here below, is a typical installation of 144, 222, and 432 antennas on one ft mast. The main category is antennas for 2 meters band that is about antenna projects for 144 mhz. Antena vhf yagi 5 elementos frecuencia fija 6174mhz.

Here is one rule of a thumb in installing vhf antennas. Yagi antennas for ham radio use, manufacturers, plans and design category is a curation of 107 web resources on, projects and info center, two portable antennas for 6meter, ef0610 6 meters yagi antenna. It outlines how to build yagis for 144mhz, 220mhz, several different 440 band frequencies, 900 mhz, and 1. This link is listed in our web site directory since saturday apr 16 2005, and till today 7 elements yagi for 144 mhz has been followed for a total of 466 times. Long yagis are commonly used from the 144mhz amateur band to the 2. Ive taken what i learned from the gmrs continue reading homebrew 5 element vhf yagi. This antenna is based on a collaborative design by e73m daniel registrarse.

For some years i have had a 4element 2m yagi along with me on vhf contest trips, which folds up to fit in the back of my toyota matrix. Cheap yagi antennas for vhf uhf by wa5vjb these antennas are relatively small, easily constructed from common materialstools and have surprising performance. About 7 elements yagi for 144 mhz the resource is currently listed in in 2 categories. The dimension of the antenna below is in function of the frequency. The attached instruction sheet is courtesy of wa5vjb who designed these antennas. This antenna is very adapted at vhf and uhf domain inside 30 mhz to 900 mhz. The big wheel is a horizontal polarized omni directional antenna.

If you have basic questions about antennas, please try checking the faq pages. Uhf optimized yagi antenna for 420450 mc for radio amateurs ver mas. A good lightweight compact yagi compromise for 144mhz time owned. While there are plenty of high performance antenna designs. Reporte antena mariposa antena radio radiodifusion. The tonna 9ele yagi is a good, compact lightweight yagi which performs very well for its boom length. Since an old 5 element version v1 of my antenna was shown in the july 2011 edition of radcom, a few people have contacted me asking for some information on how it was constructed. Antena cubica, balun ea1ddo, antenas cubicas, quad antenna. If you use an rg 58u coaxial cable to feed the antenna, do not use more than 20 meters or 60 feet long. About 5 element lfa yagi for 6 meters band the resource is currently listed in in a single category. Buy 220309 tonna 2m 9 element yagi antenna 144 to 148 mhz from. The yagi antenna or yagi uda antenna or aerial is a particularly popular form of antenna where directivity and gain are required. G0ksc simple to build, high performance yagi and quad.

The feed method is greatly simpified by directly soldering the coax to the driven element. The main category is yagi antennas plans for 6 meters band that is about six meters band yagi antenna projects. The antennas described in this article were built as the result of several discussions between kent and a cuban radio operator. Antennas direct 70 mile range yagi directional uhf dtv antenna, 4k ready, attic, outdoor, allweather mounting hardware, adjustable mast clamp uemx91 stellar labs 332230 uhf vhf signal combiner, 2 antennasingle feed, weatherproof. Baixe no formato pdf, txt ou leia online no scribd. A folding 5 element yagi for 144 mhz steve kavanagh, ve3sma, april 2017 1. Vhf yagi antenna optimized beam for 2meter band 144 mc 148 mc. Antenna projects for 144 mhz category is a curation of 148 web resources on, simple vhf antenna, dish antenna for 2 meters band, 2m big wheel antenna. The ease of obtaining parts has made this a popular choice for thousands of hams.

In this case, the intrepid dxer has decided to stack two dsfo14412 yagis, and fit 222 and 432 in the middle somewhere. Such antennas can be combined in arrays of two, four, six, eight, or more antennas. A computer optimized uhf 70 cm yagi antenna for radioamateurs, transmitting and receiving on 420 mc 430 mc 440 mhz to 450 mc with this beam in high gain dbs. Antenas vhf uhf ojo al instalar colineales vhf o uhf. Cheap yagi antennas for vhfuhf by kent britain, wa5vjb edited by john maca, ab5ss. Pg1ns ham radio site 2m projects directional antennas. This page contains construction details on a 2 metre 144mhz vhf yagi beam antenna, designed for portable use. Whether youre operating on 2 meters or you work in the 1. See more ideas about ham radio and ham radio antenna.

The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. As we have seen this is related to the beamwidth of the yagi you intend to stack. Now its time to step it up just a little bit and fabricate a bigger antenna. For an good efficacity and directivity on radio spectrum its necessary to use an yagi antenna. We take great pride in building a quality product that will give years of good service and performance. If there is a defect in materials or workmanship within 90 days of purchase, directive systems. Yagi calculator is a windows program that also runs well on linux, ubuntu 8. Note that we tried to keep the antennas away from each other, and missed with the 222 yagi by only one inch. Cheap yagi antennas for vhfuhf by kent britain, wa5vjb edited by john maca, ab5ss editors notes.