7 hz antenna

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7 hz antenna

257 links - and 6 categories

Antennas : 20M : 20 meter Dipole Antennas
  • Vertical Dipole Antenna for 14 MHz by G3PND - An home made vertical dipole antenna made with simple material. The antenna has a total length of aproximately 16 feet. In this article appeared on June QST 2019, the author explain how he reached the optimal confirugation changing and adjusting the lower part of the antenna, trimming and spacing correctly the copper wire. PDF File to downloas
    [ Hits: 1219 | Votes: 3 | Rating: 4 ]
Antennas : 40M : 40 meter Delta Loop Antennas
  • Delta Loop DX Antenna for 40 meters band - A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
    [ Hits: 431 | Votes: 3 | Rating: 6.33 ]
Antennas : 40M : 40 meter Vertical Antennas
  • A very efficient half size 40 meter Vertical Antenna - A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. A custom loading coil is also included in this project to perfectly tune the antenna to the CW portion of the 40 meters band.
    [ Hits: 735 | Votes: 4 | Rating: 8.5 ]
Antennas : 4M Antennas : 6M
  • Weather Resistant Field Antenna for 50 MHz - Photo construction manual of a portable antenna made with two heavy duty whips by buddipole. In this article has been implemented a 50 MHz portable dipole.
    [ Hits: 805 | Votes: 1 | Rating: 10 ]
Antennas : 6M : 6 meter J-Pole Antenna
  • Simple 50MHz J-Pole Antenna EA7AHG - Based on the popular DK7ZB simple 50 MHz Jpole antenna, this customized jpole project has been analized with MMANA-GAL and reproduced for six meters, two meters and 70 cm bands.
    [ Hits: 278 | Votes: 1 | Rating: 4 ]
  • J-Pole Antenna for 50 MHz - This J-Pole is mounted on a fishing rod. The radiator L1 is an isolated copper-wire with a length of 281,5 cm while the quarter-wave matching sector L2 is made with 450-Ohm-Wireman-cable
    [ Hits: 222 | Votes: 0 | Rating: 0 ]
Antennas : 6M : 6 meter Moxon Antennas
  • TriBand Moxon Antenna for 6m 4m 2m - A PDF presentation of a home made moxon antenna for 50 MHz 70 MHz and 144 Mhz. The project is mainly out of surplus plastic Plumbing pipes and clips etc, and also details of how the dimensions were calculated.
    [ Hits: 1353 | Votes: 7 | Rating: 7.11 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 6 Elements Yagi Antenna on 50 MHz - This is a design based on the QuickYagi 4 software by WA7RAI with some changes for practical reasons. The beam uses 6.5 metres of standard 25mm square boom, 12mm diameter elements without tapers. The actual boom length used is 6.3 metres and all parts are readily available.
    [ Hits: 131 | Votes: 2 | Rating: 6 ]
Antennas : Fan Dipole
  • Fan Dipole Antenna for 40 20 and 6 meters - A fand dipole antenna home made for the 7,14,50 MHz. This article descbribes how to homebrew the antenna, hot to setup and some SWR measurements.
    [ Hits: 326 | Votes: 0 | Rating: 0 ]
Antennas : Magnetic Loop
  • Indoor QRP HF Loop Antenna - A home made magnetic loop for HF Bands. This small and compact loop is designed to support small power transmissions on HF bands, from 7 MHz to 21 MHz
    [ Hits: 323 | Votes: 1 | Rating: 10 ]
Antennas : Moxon
  • Moxon Antenna for 7 MHz - Homemade moxon antenna for the 40 meter band. This article is not very descriptive but includes some very detailed images
    [ Hits: 721 | Votes: 7 | Rating: 5.85 ]
Antennas : Multiband
  • Multiband trap dipole - This antenna is a classical antenna working on 7,10,14,18,50 MHz is implemented with three traps for 30, 17 and 6 meters
    [ Hits: 269 | Votes: 0 | Rating: 0 ]
Antennas : NVIS
  • Portable NVIS Loop for 80m to 40m - A portable (15.5 foot diameter) NVIS loop for 3.5 to 7.3 MHz. Performs well at high and low takeoff angles, and has smaller footprint than most NVIS antennas.
    [ Hits: 363 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • An automatically tuned 7 to 30 MHz mobile antenna - For every radio amateur who loves to travel by car, a mobile installation soon becomes a necessity. While in inhabited areas there is usually some coverage of VHF repeaters, in many other places VHF radios are useless. In these very places, HF can provide reliable contacts, and a lot of fun, from anywhere.
    [ Hits: 258 | Votes: 1 | Rating: 10 ]
Antennas : Quadrifilar Helix
  • 137MHz Quadrifilar Antenna - This version of the 137MHz quadrifilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey Taming the QFH which appeared in the March 1997 RIG magazine. This article contains detailed 3D pictures and models and detailed pictures.
    [ Hits: 229 | Votes: 3 | Rating: 7 ]
  • Making a Quadri Filar Helix antenna - A homemade Quadri filar Helix Antenna project with detailed pictures that can inspire and guide you on building your onw QFH antenna sor 137 MHz.
    [ Hits: 205 | Votes: 0 | Rating: 0 ]
  • Making a Quadri Filar Helix antenna - Lot of pictures, drawings and schematics to build your own QFH Quadri Filar Helix antenna for 137 MHz satellite signals reception
    [ Hits: 451 | Votes: 6 | Rating: 3.83 ]
Antennas : Satellite Manufacturers : Antenna Analyzers
  • HG7AN Antenna Analyzer - Antenna Analyzer plus 500 is a multifunctional measuring instrument, very useful for amateur radio activity. Its size allows you to easily take it for relocation as well. Frequency range: 100KHz - 500MHz. Access directly via WiFi. Includes a dual-channel signal generator
    [ Hits: 264 | Votes: 1 | Rating: 10 ]

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