ground

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ground

277 links - and 2 categories

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: 33817 | Votes: 18 | Rating: 7.05 ]
Antennas : End-Fed
  • How to make an end-fed antenna work  pop - Here is a sure fire way to make end-fed halfwave antennas fed with a 50 ohm coupler work - without long radials, grounds, chokes, voodoo.
    [ Hits: 43946 | Votes: 30 | Rating: 6.71 ]
Antennas : Feed Lines
  • Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.
    [ Hits: 1272 | Votes: 0 | Rating: 0 ]
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 ]
Antennas : Shortwave
  • Long Loopstick Antenna - Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.
    [ Hits: 4376 | Votes: 1 | Rating: 10 ]
Antennas : Stealth
  • Antennas and Grounds for apartments - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna
    [ Hits: 23158 | Votes: 12 | Rating: 5.75 ]
Antennas : Theory
  • Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver' s output power verses the portion of that power reflected by the antenna system
    [ Hits: 8713 | Votes: 8 | Rating: 4.75 ]
  • Amateur Radio Antennas: Ground Theory - Perfect ground vs. poor ground. What is the difference? How does the ground influence the DX-gain?
    [ Hits: 6680 | Votes: 0 | Rating: 0 ]
Antennas : Vertical
  • Groundplane antenna - Short guide to build your own groundplane antenna, includes radial measurements fro warc bands
    [ Hits: 5426 | Votes: 2 | Rating: 10 ]
Ham Radio : ARES RACES
  • Ham Radio And The WTC Disaster - "W2IK's Personal experience being the first responder at ""ground zero"" during the WTC 9/11 disaster."
    [ Hits: 1102 | Votes: 6 | Rating: 10 ]
Manufacturers : Lightning and Surge Protection
  • ALT Fabrication - ALT Fabrication manufacturer and distributor serving the telecommunication industry. Boomgates, Sector frames, grounding, electrical.
    [ Hits: 2253 | Votes: 5 | Rating: 6.4 ]
Radio Equipment : Radio Manuals
  • Handbook on grounding - U.S. Government's military handbook on grounding in pdf format
    [ Hits: 8836 | Votes: 11 | Rating: 4.82 ]
Shopping and Services : Test equipment
  • Bertech - Distributor of ESD, kapton tapes, high temperature tapes, esd wrist straps, ionizers, ground cords, grounding devices, ESD gloves, esd finger cots, esd workstations, esd rubber bands, esd binders, esd bags, anti static glove, esd rubber bands, no clean solder paste, water soluble solder paste, finger cots, esd mats
    [ Hits: 789 | Votes: 0 | Rating: 0 ]
Technical Reference : Grounding
  • Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system
    [ Hits: 13169 | Votes: 12 | Rating: 4.66 ]
  • Grounding FAQs - A Grounding Q&A by ARRL web
    [ Hits: 2130 | Votes: 2 | Rating: 1 ]
  • Assorted grounding hints and kinks - Assorted Grounding Hints and Kinks and Technical Correspondence, Grounding Techniques, Conductivity in the Cold, Cold Ground, Is Your Radio Equipment REALLY Grounded?
    [ Hits: 3297 | Votes: 1 | Rating: 2 ]
  • Different grounds for different shacks - Technical questions answered about grounding techniques, in pdf file
    [ Hits: 3731 | Votes: 0 | Rating: 0 ]
  • Grounding Concepts - What is ground?RF ground and the ground plane, how can I tell if I have a good ground? ground loops
    [ Hits: 2666 | Votes: 7 | Rating: 8.1 ]
  • Why grounding - Overvoltage protection, Voltage stabilization, Grounding in wiring, Ground wire resistance
    [ Hits: 1725 | Votes: 1 | Rating: 1 ]
  • Ground Problems - RF ground systems
    [ Hits: 3110 | Votes: 2 | Rating: 7 ]

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