antenna type

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antenna type

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Antennas : 160M
  • Experiments with 160m antennas - Experimentin wire antennas on top band using several type of aerials. This includes a 40 to 160 meters EndFed Half Wave kite antennas and 160m/80m loaded vertical antenna.
    [ Hits: 177 | Votes: 0 | Rating: 0 ]
Antennas : 40M : 40 meter Vertical Antennas
  • Vertical bazooka antenna for the 40m  new - A quarter wave vertical omni-directional antenna for 7 MHz. Formulas for dimensions in feet and meters are provided. Ideal radial angle is between 35° and 45°. Velocity factor (Vf) varies based on coax type.
    [ Hits: 129 | Votes: 7 | Rating: 6.85 ]
Antennas : Beverage
  • The Wave Antenna for 200-Meter Reception - A QST Article published in November 1922 is about the origin of Beverage antennas, an unidirectional antenna type that was discovered and experimented for the first time in that period. This article is the introduction to beverage antenna theory, by the homonimous autho H. H. Beverage.
    [ Hits: 203 | Votes: 0 | Rating: 0 ]
Antennas : Fan Dipole
  • The KL3JM modified SRI Fan Dipole for 80-40-20 Meters - The antenna in this project is a modification of the techniques used to design a multiband fan type dipole with little or no tuning involved having a total space of 105 feet
    [ Hits: 500 | Votes: 1 | Rating: 5 ]
Antennas : Folded Dipole
  • Folded Dipole Antennas - The folded dipole antenna or folded dipole aerial is widely used, not only on its own, but also as the driven element in other antennas like the Yagi antenna and various other types of antenna. Folded Dipole Myths, Bandwidth and details on folded dipoles
    [ Hits: 435 | Votes: 7 | Rating: 3.57 ]
Antennas : Indoor
  • Antennas for HOAs and Apartments - This presentation applies to HF / VHF / UHF antennas and is about 14 different type of antennas suitable for indoor od apartament installations
    [ Hits: 187 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole
  • Homemade 2M/440 J-Pole Antenna - A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials.
    [ Hits: 1044 | Votes: 5 | Rating: 3.4 ]
Antennas : Longwave
  • The BikeLoop Antenna for VLF - BIKELOOP is a VLF home made antenna. This antenna is a double magnetic loop composed by two orthogonal loops. This document describe how the prototype was built, the purpose is to give some construction hints to people who wants to try this kind of antenna. Mathematical and electrical details are described as well
    [ Hits: 232 | Votes: 0 | Rating: 0 ]
Antennas : OCF
  • Homebrew an OCF Off-Center Fed Dipole Antenna - This type of antenna is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It’s a dipole fed off center with a 4:1 balun at the offset feed point. The antenna shown covers 80, 40, 20 and 10 meters. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. 160-10m, 80-10m or 40-10 meters depending on your available space. Other bands will require a tuner.
    [ Hits: 194 | Votes: 3 | Rating: 6.67 ]
Antennas : Portable
  • Build this Vertical Portable HF Antenna - An experimental prototype of an asymmetrical hatted vertical dipole antenna that can work on HF bands 20 to 10 meters band. The AHVD Vertical dipole is an upside-down T design
    [ Hits: 373 | Votes: 3 | Rating: 9.67 ]
Antennas : Receiving
  • 3 Foot Box Loop Antenna - These antennas are larger versions of the small loop antennas that were part of the cardboard back panel of older AC/DC five tube AM radios. Loop antennas of this type were popular in the very early days of radio. They are still useful today for long distance reception of AM radio stations
    [ Hits: 384 | Votes: 1 | Rating: 2 ]
Antennas : Wire
  • Long Wire Antenna for portable operations - With the view to establish a quick and easy multi-band antenna deployment for portable and camping operations a simple long wire antenna with an earth or earth plus counterpoise arrangement with a 9:1 voltage unun including a tuner or simply with a tuner is one possible solution. With the 9:1 voltage unun and wire lengths suggested in the below tables the antenna should present non extreme impedances for all HF amateur band frequencies. This page is far from complete and represents the ongoing investigation into this type of antenna. Experiments to date seem to have raised more questions than obvious answers.
    [ Hits: 796 | Votes: 13 | Rating: 8.69 ]
  • Lazy H Array Antenna for 40 meter - Make them simple then Make them work. The LAZY H antenna is a general type of antenna that is in the curtain array family. By placing two 1 wavelength dipoles in a plane that is at right angles to the direction of maximum radiation and keeping the proper in-phase current condition to each element, you can achieve a high gain bi-directional antenna.
    [ Hits: 284 | Votes: 3 | Rating: 5.33 ]
  • Wire Beam Antenna Types - In this article the author feature the various types of beam antenna that can ben builw using wires, like moxon, spieder and hex beam, delta loops, bird yagi
    [ Hits: 153 | Votes: 2 | Rating: 6 ]
Antennas : Yagi
  • How to stack dissimilar yagi antennas - In this article the author provides some guidelines on how to solve a common problem when stacking different types of yagi antennas on the same mast, limiting the effects on gain and radiation pattern of both antennas
    [ Hits: 713 | Votes: 2 | Rating: 5.5 ]
  • DIY Yagi Antenna - This article describes the phases for the construction of a Yagi antenna. The calculations of the parameters are made using 4NEC2 software. This type of antenna is used for transmissions and receptions of electromagnetic waves. The project shown here refers to the frequency of 433.92 MHz.
    [ Hits: 107 | Votes: 4 | Rating: 3.5 ]
Manufacturers : Antennas : HF
  • Pocher Antenne - Amateur radio antennas manufacturer. Produces HF end-fed, dipoles, and other wire antenna types, mono band and multi band antennas.
    [ Hits: 113 | Votes: 1 | Rating: 2 ]
Manufacturers : Antennas : VHF UHF Microwave : Vertical Antennas
  • James Pole Antenna - Hand-tuned, J-Pole Antennas. The James Pole Antenna is constructed of 1/2 inch Type M copper pipe, soldered together and capped on both vertical elements. Each Antenna is tuned for center frequency.
    [ Hits: 218 | Votes: 0 | Rating: 0 ]

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