directional antenna
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Antennas : 15M- The extended double zepp
- This wire antenna exhibits extraordinarily high gain in a bi directional radiation pattern.
[ Hits: 12405 | Votes: 28 | Rating: 8.11 ]
- 20m delta loop
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- This antenna is fed for vertical polarisation, to give a low angle of radiation for DX and also a nearly omni-directional radiation pattern.
[ Hits: 65707 | Votes: 69 | Rating: 6.71 ]
- 2 Meter 10 Element Quagi Antenna
- This antenna was designed by N6JSX Kuby for Transmitter hiding. Fitting the requirements of directionality, high gain, and portability. This antenna was derived from the ARRL Handbook information on Quagi's and Yagi's; in the absence of two meter Quagi information, UHF Quagi dimensions were scaled into 146 MHz use.
[ Hits: 15653 | Votes: 32 | Rating: 7.06 ]
- A magnetic loop antenna for HF
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- Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. The antenna can be put together in a short time and is cheap by Peter Parker VK3YE ex VK1PK
[ Hits: 100939 | Votes: 46 | Rating: 6.74 ]
- Omni-Directional antenna for 6-Meters
- Experimental omni-directional antennas for 6-meters band
[ Hits: 12812 | Votes: 6 | Rating: 4.83 ]
- 50MHz J-Pole Antenna
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- Need a general purpose antenna on the magic band? The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarised antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
[ Hits: 33818 | Votes: 18 | Rating: 7.05 ]
- Build a 2.4GHz Vertical antenna
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- Building a 2.4GHz vertical collinear omnidirectional antenna
[ Hits: 77406 | Votes: 118 | Rating: 6.27 ]
- J-Pole theory
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- The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
[ Hits: 30316 | Votes: 26 | Rating: 6.87 ]
- HF J-Pole antenna
- A Simple Nondirectional Antenna for Ten Meters
QST February 1950, Easy to build J-Pole antenna for restricted space.
[ Hits: 6614 | Votes: 3 | Rating: 3 ]
- The Lindenblad Antenna: The Ultimate Satellite Omni Directional Aerial
- This Antenna project is a bit more complex than other omni antennas for satellite use, but it is much easier and cheaper than a standard tower mounted circular polarized azimuth and elevation rotating beam system.
[ Hits: 440 | Votes: 5 | Rating: 6.8 ]
- The full-wave loop antenna
- These omnidirectional antennas offer Horizontal polarization, and about 2.1 dbd of gain. They are much quieter than a dipole or a vertical, have a broader bandwidth and will usually out perform a dipole antenna.
[ Hits: 5052 | Votes: 4 | Rating: 6.5 ]
- Build your first dipole
- The dipole antenna is an easily designed and made antenna usually used on HF, although can be (and sometimes is) made for VHF and UHF antennas, and in varying forms is also used as part of different designs of antennas i.e. as the driven element for directional antennas.
[ Hits: 14809 | Votes: 14 | Rating: 6.93 ]
- The Antenna Elmer
- Here you will find information about wire antennas as well as directional beams.
[ Hits: 9294 | Votes: 26 | Rating: 7.35 ]
- Slotted Waveguide 802.11b WLAN antennas
- 802.11b WLAN Waveguide Antennas Unidirectional &
Omnidirectional. High gain, Simple construction by Trevor Marshall
[ Hits: 6445 | Votes: 18 | Rating: 7.16 ]
- DirectionalWaveguide - Seattle Wireless
- Waveguide antenna is a type of DirectionalAntenna and is a modified waveguide. A waveguide is simply a tube, either rectangular or cylindrical in cross-section, that will carry a microwave radio signal with very low signal loss
[ Hits: 4982 | Votes: 3 | Rating: 6 ]
- PringlesCantenna - Seattle Wireless
- The PringlesCantenna is an ultracheap Yagi-type directional antenna that can be built for under $10. The original Pringles Yagi was designed by Andrew Clap.
[ Hits: 9417 | Votes: 5 | Rating: 6.8 ]
- TX RX Systems Inc
- TX RX Systems Inc. manufactures signal boosters, rf antennas, transmitter combiners, cell enhancers, land mobile radios, duplexers, receiver multicouplers, bidirectional amplifiers, bda, rf amplifiers, rf filters, rf cavity filters, rf combiners, rf components, in building rf coverage, repeaters, repeater amplifiers, rf management equipment, rf systems, and rf solutions. TX RX Delivers Reliable Solutions.
[ Hits: 1638 | Votes: 5 | Rating: 4 ]
- SSB Electronic USA
- manufactures and distributes HF, VHF, UHF and SHF equipment covering 10MHz. - 47.0GHz. Our products include: Wireless LAN / WAN Bidirectional Linear Amplifiers, Low Noise Preamplifiers - LNA's, RF Linear Amplifiers, Relays, Transverter Systems, Frequency Translation Systems, Downconverters, Antennas, Parabolic Dishes, Coaxial Cable, Relays, Antenna Switches, Microwave Test equipment, PC controlled Receivers, Microwave Linear Amplifiers including models for Telemetry, Wireless, and CDMA applications.
[ Hits: 8402 | Votes: 8 | Rating: 6.12 ]
- ITELITE Antennas
- ITELITE manufactures omnidirectional, sector and directional antennas 900 MHz 2.4 GHz 3.5 GHz 5 GHz 5.8 GHz antennas.
[ Hits: 839 | Votes: 6 | Rating: 7 ]
- Dawicom
- Manufacture of microwave directional, omni directional, sector and multisector antennas with horizontal polarization for ISM band 2,4 GHz
[ Hits: 803 | Votes: 0 | Rating: 0 ]
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