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35 links about fr ground on dxzone.com

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Antennas : 160M
  • A Lowband Antenna that is Almost Free - The Shunt-fed Tower, an effective Low Band Antenna, uses your beam as a capacitive top-hat and only needs a simple feed network and a good ground system to work DX on 80M and 160M.
    [ Hits: 16544 | Votes: 4 | Rating: 7.75 ]
Antennas : 40M
  • Ground Plane for 7 MHz - How to build a ground plane antenna for the 40 meters band in french
    [ Hits: 2405 | Votes: 0 | Rating: 0.00 ]
Antennas : 6M
  • WA0WOX 6 meter Moxon Antenna - Built around a 1/2" pvc frame, Larry's 6 meter moxon antenna is made from #8 aluminum ground wire
    [ Hits: 2119 | Votes: 2 | Rating: 6.00 ]
Antennas : Baluns
  • Errante's virtual ground balun - Errante's virtual ground Balun, a state-of-the-art high power HF balun family.
    [ Hits: 694 | Votes: 5 | Rating: 8.60 ]
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: 1122 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory
  • Verticals. Ground systems and some history - Article gives a good overview of the basics and reflects the accepted wisdom from BC antenna work.
    [ Hits: 1159 | Votes: 1 | Rating: 10.00 ]
  • Horizontal Antennas above Real Ground - Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole
    [ Hits: 414 | Votes: 0 | Rating: 0.00 ]
  • Earth Systems - In order to resonate at a particular frequency, an antenna needs to be at least one half wave length long. Antennas below a 1/2 wave are dependent on a ground system for resonance as well.
    [ Hits: 857 | Votes: 1 | Rating: 3.00 ]
Antennas : Vertical
  • Groundplane antenna - Short guide to build your own groundplane antenna, includes radial measurements fro warc bands
    [ Hits: 5152 | Votes: 2 | Rating: 10.00 ]
Antennas : Wire
  • Half square antenna - The elevated half square antenna is a very simple antenna that can be constructed from common materials yet gives significant improvement over a dipole at the same elevation. Ground mounted versions of this antenna are commonly used in amateur radio for 75/80 and 160 meter bands
    [ Hits: 6844 | Votes: 3 | Rating: 7.67 ]
Ham Radio : Blogs : USA
  • AA6E station log - Notes from an amateur radio operator. Martin Ewing Branford, Connecticut, USA, topics are Ten-Tec Orion, Station Grounding, PSK31 Morse, etc.
    [ Hits: 382 | Votes: 0 | Rating: 0.00 ]
Ham Radio : Hamfests
  • Greater Louisville Hamfest - Held at the Bullet County Fairgrounds, Ham radio equipment, computers, flea market, tailgating, Free RV parking, Ham license testing, forms
    [ Hits: 1061 | Votes: 5 | Rating: 9.40 ]
Manufacturers : Accessories
  • BHI Ltd - Noise eliminating products. Remove unwanted background noise and interference leaving only the speech. Clear communications, listen stress free. Dsp noise cancellation solutions.
    [ Hits: 606 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Lightning and Surge Protection
  • ALT Fabrication - ALT Fabrication manufacturer and distributor serving the telecommunication industry. Boomgates, Sector frames, grounding, electrical.
    [ Hits: 1910 | Votes: 3 | Rating: 9.67 ]
Manufacturers : Towers and Accessories
  • Better Metal LLC - Manufacturing distributor of infrastructure products for the telecommunications industry; antenna mounts, ice bridge, cable ladder, ground bars, weatherproofing, exothermic, safety equipment.
    [ Hits: 809 | Votes: 3 | Rating: 10.00 ]
Operating Modes : Amateur Radio Astronomy
  • The Very Small Array (VSA) - in Tenerife (Canary Islands). Designed to study fluctuations in the Cosmic Microwave Background (CMB) thought to originate from the period immediately following the big bang. Operated by Cambridge and Manchester Universities (UK).
    [ Hits: 718 | Votes: 1 | Rating: 10.00 ]
Propagation : Aurora Propagation : NVIS Propagation
  • What is NVIS - differences from groundwave propagation
    [ Hits: 482 | Votes: 0 | Rating: 0.00 ]
Propagation : Sunspots
  • IonoProbe - Monitors the space weather parameters essential for HF radio, including SSN/SFI, Ap/Kp, X-ray/Proton flux, and Auroral activity. IonoProbe downloads near-real time satellite and ground station data, stores information for future use and displays it in a user-friendly way.
    [ Hits: 1937 | Votes: 11 | Rating: 5.37 ]
Software : Antenna analysis
  • Antenna Model - Commercial software for the analysis of wire antennas. runs under most Microsoft 32-bit Windows operating systems—Windows 98/ME/NT4/2000/XP Analyze most wire antennas in free space, over perfect ground, or over real-world grounds with the conductivity and dielectric constant you specify. You describe the antenna to the program in easy-to-use spreadsheet-style input window
    [ Hits: 3553 | Votes: 3 | Rating: 8.00 ]
Software : Audio Recorders
  • RecAll - AudioCapture recorder software for Windows, Runs in the background, and starts recording when sound is detected from the microphone input.
    [ Hits: 5853 | Votes: 1 | Rating: 5.00 ]
Software : Linux
  • Grig Radio Control - Grig is a freeware simple Ham Radio control (CAT) program based on the Ham Radio Control Libraries (Hamlib). It is intended to be highly generic presenting the user to the same graphical user interface regardless of which radio is being controlled. Grig supports the most commonly used CAT commands that are implemented by Hamlib, and integrates well with other ham radio programs like Xlog and gMFSK. Grig has been developed on Linux, but has been ported on Mac and Windows OS.
    [ Hits: 16093 | Votes: 7 | Rating: 6.43 ]
Software : Logging
  • Aether - Aether is an ham radio logging for the Mac. Aether gives hams logging software that is as powerful, easy to use, and good looking as the operating system it runs on. Designed from the ground-up using Apple’s Cocoa, Aether supports the latest Mac OS X technologies, and provides the experience that Mac users expect.
    [ Hits: 2055 | Votes: 7 | Rating: 8.43 ]
Technical Reference : Grounding
  • The Radio-Frequency Ground - You were told that your audio was no good, that you had "RF in your audio ? This is also known as RF feedback
    [ Hits: 1770 | Votes: 0 | Rating: 0.00 ]
Technical Reference : RF Safety
  • Grounding Systems for Hams - Grounding Systems for Amateur Radio Stations, Safety grounds vs. radio frequency (RF) grounds, the practical station ground
    [ Hits: 11909 | Votes: 9 | Rating: 9.00 ]
  Result Page:  1 2 [next]
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