directional

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directional

120 links - and 1 categories

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 ]
Antennas : 20M
  • 20m delta loop  pop - 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 ]
Antennas : 40M : 40 meter Magnetic Loop Antennas
  • A magnetic loop antenna for HF  pop - 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 ]
Antennas : 6M Antennas : 6M : 6 meter J-Pole Antenna
  • 50MHz J-Pole Antenna  pop - 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 ]
Antennas : Collinear Antennas : J-Pole
  • J-Pole theory  pop - 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 ]
Antennas : Lindenblad Antennas : Shortwave
  • 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 ]
Antennas : Theory
  • The Antenna Elmer - Here you will find information about wire antennas as well as directional beams.
    [ Hits: 9294 | Votes: 26 | Rating: 7.35 ]
Antennas : WiFi
  • 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 ]
DX Resources : Beacons
  • Longwave Non-Directional Beacons - Beacons operating in the longwave radio spectrum, generally between 200 and 450 kHz
    [ Hits: 5407 | Votes: 14 | Rating: 5.79 ]
Manufacturers : Accessories
  • 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 ]
  • DCI Digital Communications Inc. - Filters, Duplexers, Combiners Bi-Directional Amps
    [ Hits: 792 | Votes: 3 | Rating: 7 ]
Manufacturers : Antennas
  • 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 ]
Manufacturers : Cable and Connectors
  • Pasternack Enterprises, LLC - Manufactures and sells coaxial connectors, coaxial adapters, coaxial cables, attenuators, directional couplers, fiber optic connectors, fiber optic adapters, fiber optic cables, coaxial switches, terminators, twinax connectors and cables and tools.
    [ Hits: 1230 | Votes: 4 | Rating: 6.25 ]
Manufacturers : Microwave
  • 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 ]
Operating Modes : NPR New Packet Radio
  • NPR New Packet Radio - IP over 430 MHz - NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
    [ Hits: 151 | Votes: 0 | Rating: 0 ]

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