j antenna

j antenna

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• Multiband Cubical Quads - EI7BA Multiband Cubical Quads projects, includes two elements quad antennas for 10 12 15 17 20 meters band. Performance considerations, detailed pictures and construction notes.
  [ Hits: 7915 | Votes: 5 | Rating: 9.4 ]

• J-Pole Antenna for your Packet Radio Station - Yo5ofh j-pole antenna plans for 2 and 6 meters
  [ Hits: 3251 | Votes: 1 | Rating: 10 ]

• Crossfire Phasing - Phased antennas elements use radiated fields from multiple elements to produce nulls.
  [ Hits: 1189 | Votes: 3 | Rating: 9.33 ]

• A T-Match ATU  ^pop - An homebrew antenna tuner project
  [ Hits: 31519 | Votes: 22 | Rating: 5.91 ]

• A Quadruple Helix for AO-40 - A homebrew project of a quadruple helix antenna system based on G3RUH 16 turn helix antenna for 2.4 GHz.
  [ Hits: 8281 | Votes: 10 | Rating: 6.1 ]

• Design your Own Super J Pole - a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole.
  [ Hits: 7849 | Votes: 14 | Rating: 5.29 ]

• Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.
  [ Hits: 4287 | Votes: 5 | Rating: 5 ]

• Windom off center fed antenna 80-10 mt - This antenna is not a true Windom, but rather an off center fed or OCF dipole works on 8 bands from 80 to 10 meters
  [ Hits: 12145 | Votes: 13 | Rating: 5.15 ]

• QRZ de W3DF The Quad Project - A two element multiband quad antenna
  [ Hits: 2349 | Votes: 14 | Rating: 9.06 ]

• A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF
  [ Hits: 2873 | Votes: 2 | Rating: 6 ]
• Optimizing Inductors - While intended mainly for antenna loading coils, this article also applies to other resonant systems, such as amplifier tank circuits.
  [ Hits: 552 | Votes: 1 | Rating: 10 ]

• W8ZR High-Power Antenna Tuner - This homebrew legal-limit antenna tuner is based on the famous "Ultimate Transmatch" introduced by the late Lew McCoy, W1ICP. The Ultimate Transmatch was described in the "Beginner and Novice" section of the July 1970 QST (Page 24).
  [ Hits: 11496 | Votes: 10 | Rating: 8.1 ]

• Helical Antenna for 2.4 GHz and 802.11b - The following page details construction of a Helical antenna based on the superb design by Jason Hecker.
  [ Hits: 5309 | Votes: 6 | Rating: 7.17 ]
• How to build a tin can waveguide antenna  ^pop - Looking for an inexpensive way to increase the range of your wireless network? A tin can waveguide antenna, or Cantenna, may be just the ticket. This design can be built for under $5 U.S. and reuses a food, juice, or other tin can.
  [ Hits: 37650 | Votes: 45 | Rating: 7.46 ]

• ZS6BKW Multiband Antenna by NC4FB - An optimized variant of the venerable G5RV multiband antenna
  [ Hits: 1201 | Votes: 0 | Rating: 0 ]

• Joe Tracker Ham Radio eBay Auction Price Tracker - Ham radio equipment eBay prices, adjusted for trends, filtered for accessories, leaving only condition and auction terms to affect the final price. Also direct links to auctions, searches and recommended sites for research, plus amateur radio station rigs, projects and antenna farm.
  [ Hits: 1122 | Votes: 3 | Rating: 9.67 ]

• EZ Hang - The perfect tool when you want to put up a wire antenna easily, quickly and safely! EZ HANG can be used to "shoot" a line over a tree or other object over 100 feet high
  [ Hits: 3452 | Votes: 3 | Rating: 7 ]

• Daiwa - Daiwa Industry, maker of power suppliers, coax cable and antenna switches, power meters, SWR meters, DC-DC converters
  [ Hits: 3309 | Votes: 7 | Rating: 7.79 ]

• Kiwa Electronics - Kiwa Electronics is a company that specializes in accessory equipment for the radio enthusiast. Our products include Filter Modules to improve receiver performance, a High Performance Medium Wave Air Core Loop Antenna for improved broadcast band reception, the Pocket Loop Antenna, the Earth Monitor, BCB Rejection Filter and Broadband and SW Preamps. We also offer numerous performance upgrades for popular receivers.
  [ Hits: 3067 | Votes: 5 | Rating: 8.8 ]

• National RF, Inc. - National rf provides consulting engineer services, and manufactures direction finding antennas, test equipment, communications receiving equipment and adjuncts, satellite antennas, voice amplification and audio equipment.
  [ Hits: 792 | Votes: 0 | Rating: 0 ]

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