rf antenna

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Search Results for "rf antenna"

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Antennas : Active
  • The PA0RDT Mini-Whip - An active receiving antenna for 10 KHz to 20 MHz, a very small sized antenna with excellent performances in noise to signal ratio.
    [ Hits: 537 | Votes: 6 | Rating: 7.00 ]
Antennas : Beverage Antennas : Delta loop
  • Full Wave Delta Loop at Low Height - Article using a full wave delta loop antenna at low height, feeding methods, performance reports on 1984 QST article by W1FB and W1SE
    [ Hits: 555 | Votes: 2 | Rating: 5.00 ]
Antennas : Dipole Antennas : Fan Dipole
  • An Effective Fan Dipole HF Antenna System - This antenna consists of one or more dipoles with a common coaxial feeder and a 1:1 balun choke to ensure that no RF travels down the outside of the co-ax screen
    [ Hits: 374 | Votes: 1 | Rating: 7.00 ]
Antennas : Feed Lines
  • Antenna feed impedance - Article on antenna feed impedance and the importance of matching RF andtennas to feeders, including notes on Radiation resistance, loss resistance, and efficiency are also detailed.
    [ Hits: 147 | Votes: 1 | Rating: 10.00 ]
Antennas : Feed Lines : Choke
  • Common-mode chokes - Chart that present results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
    [ Hits: 218 | Votes: 0 | Rating: 0.00 ]
  • Unwanted RF in the shack  new - How to make your own CMC Common Mode Current choke and where to place in your antenna feed-line.
    [ Hits: 147 | Votes: 1 | Rating: 10.00 ]
Antennas : HexBeam Antennas : Horn Antennas : Loop
  • Multiband Horizontal Loop Antenna - An 80 Mx Horizontal Loop Antenna which also operates on all higher HF Amateur bands including the WARC bands. It has very good performance and is easy to build by VK5SW
    [ Hits: 893 | Votes: 10 | Rating: 8.70 ]
Antennas : Magnetic Loop
  • PA3EGU Magnetic Loop - Magnetic Loop antenna for 20 to 80 meters band using home made butterfly condensator kit
    [ Hits: 476 | Votes: 1 | Rating: 1.00 ]
Antennas : Portable
  • Portable Magnetic Loop Antenna - A portable magneti loop antenna project made with coax cable by WW3WW. This kind of antenna is the perfect solution for those who live in places where is not possible to setup antennas on the roof.
    [ Hits: 694 | Votes: 1 | Rating: 1.00 ]
Antennas : Satellite
  • The CJU Sat Antenna - KD8KSB realization of the CJU satellite antenna that allow similar performance to the arrow antennas.
    [ Hits: 381 | Votes: 0 | Rating: 0.00 ]
Antennas : Shortwave
  • Mini Whip Antenna - An Active antenna designed for VLF and shortwave radio reception. A small antenna capable of excellent performances on low bands, made on a copper plate and introductio to active antennas.
    [ Hits: 1126 | Votes: 2 | Rating: 6.50 ]
Antennas : Theory Antennas : Vertical
  • G8JNJ Broadband HF Vertical Antenna - Broadband HF Vertical antenna which does not require a tuner, and which is capable of providing reasonable performance on all bands from 7MHz to 28MHz
    [ Hits: 585 | Votes: 0 | Rating: 0.00 ]
Antennas : Wire
  • Doublet vs dipole for 20m - Comparing perfomances of two antennas using WSPR reporting system
    [ Hits: 249 | Votes: 1 | Rating: 10.00 ]
Ham Radio : Blogs : Asia : India
  • VU2NAN Nandu Priority listing - Homebrew Antennas, Transmitters, Receivers, Converters, Keyers and SWR/RF Current Indicators with photographs an excellent blog with many projects by VU2NAN
    [ Hits: 94 | Votes: 2 | Rating: 9.00 ]
Manufacturers : Antennas : HF : Quad Antennas
  • Perfect Quad Antennas - Perfect Quad Co,Ltd japanese ham radio quad antenna manufacturer
    [ Hits: 173 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Remote Control
  • RemoteShack.com - Manufacture remote control interfaces to manage several kind of ham radio transceivers, Antenna rotators and antenna switches. Control can be done using smartphone Apps or from Computers.
    [ Hits: 62 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : Reviews and Comparisons
  • HexBeam vs SpiderBeam - In these slides, differences between spiderbeam antenna and hexbeam antennas are explained comparing performances and measurements.
    [ Hits: 1088 | Votes: 3 | Rating: 7.00 ]
Technical Reference : Arduino
  • Arduino MFJ tuner control - An Arduino uno based project to control an MFJ 998 antenna tuner via Icom CI-V interface by VE1ZAC
    [ Hits: 221 | Votes: 0 | Rating: 0.00 ]
  • Arduino Rotator Controller  updated - Aduino-based Amateur Radio Antenna Rotator Controller that can emulate the Yaesu GS-232A or GS-232B interface by K3NG
    [ Hits: 138 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Radio Frequency Interference
  • RF Problems and the HF Vertical Antenna  new - Are you having RF problems in the shack since you put up your HF vertical antenna? This is a common problem with an easy solution.
    [ Hits: 613 | Votes: 3 | Rating: 6.33 ]
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