7 hz antenna

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7 hz antenna

257 links - and 6 categories

Antennas : 10M
  • 5 Elements 28 MHz Monobander - A 5 elements yagi antenna for 10 meters band project, plane and picture of the EF105A by YU7EF
    [ Hits: 4473 | Votes: 8 | Rating: 3.25 ]
Antennas : 15M Antennas : 40M
  • W3HH antenna for 40 meters - Pictures and plan to build a wire W3HH antenna for 7 Mhz.
    [ Hits: 5021 | Votes: 11 | Rating: 7.45 ]
  • Bazooka antenna for 40 meters - A bazooka antenna project for the 7 Mhz, includes dimension for to homebrew your own bazooka for HF bands
    [ Hits: 8641 | Votes: 13 | Rating: 6.69 ]
Antennas : 40M : 40 meter Vertical Antennas
  • 40m broadband vertical antenna - A loopy loop loaded vertical antenna operating range 7.0 to 7.3 MHz by S. C. Chuck Smith, WA7RAI
    [ Hits: 6567 | Votes: 15 | Rating: 7.52 ]
  • Backyard 7 Mhz Vertical - A vertical antenna for 40 meters band by PA5MW
    [ Hits: 1326 | Votes: 0 | Rating: 0 ]
Antennas : 4M
  • Vertical half-wave aerials for 4m - Practical designs pictures and alternative design of antennas for 70 Mhz by Ross Wilkinson G0WJR
    [ Hits: 8418 | Votes: 16 | Rating: 5.12 ]
Antennas : 6M Antennas : 6M : 6 meter Yagi Antennas
  • 4 el yagi for 50 Mhz - The EF0604S is a compact 4 elements yagi antenna plan for six meters band featuring 8.77 dBi gain and a front back gain of 17.89 dB. Article includes elements dimensions and spacing, along to pictures of some homebrewed examples.
    [ Hits: 3751 | Votes: 10 | Rating: 6.84 ]
Antennas : 70cm
  • Quadrifilar Helix antenna for 436 MHz - This is an antenna that author just built. Was intend for receiving the AO-27 downlink (at 436.800 +/- doppler). It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB.
    [ Hits: 3887 | Votes: 4 | Rating: 4.5 ]
  • 440 Mhz J-Pole Antenna plans - Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Author use 1/2 inch copper pipe, and the associated fittings necessary. The dimensions aren't typical however, this is what it took to get its SWR low.
    [ Hits: 20922 | Votes: 51 | Rating: 4.8 ]
Antennas : CobWeb
  • The Cobweb HF Antenna - The G3TPW Cobwebb antenna covers five bands, 14 - 28 mhz, including the WARC bands
    [ Hits: 6022 | Votes: 4 | Rating: 6.25 ]
Antennas : Dipole
  • K7MEM Center-Fed Half-Wave Dipole ( 3-30 MHz) - A Center-Fed Half-Wave Dipole is probably the simplest of antennas to construct and use. It is usually suspended between two supports, from it's end insulators, and has the feedline hanging from the center.
    [ Hits: 4111 | Votes: 11 | Rating: 6.27 ]
Antennas : End-Fed
  • Halfer End-Fed Halfwave Antenna  pop - End-Fed Half-Wave Antenna for the 7 or 10 MHZ amateur bands intended to provide a very simple to erect yet effective portable QRP antenna.
    [ Hits: 25801 | Votes: 14 | Rating: 8.07 ]
Antennas : Magnetic Loop
  • The G3BGR Magnetic Loop - This ia a home built Magnetic loop antenna which was used by G3BGR, indoors on 7,10 and 14Mhz. The basic idea was in Radcom 1986
    [ Hits: 1371 | Votes: 0 | Rating: 0 ]
  • HB9AGD Magnetic Loop - Pictures and antenna plan of a magneti loop antenna working in the range 6.650 7.250 Mhz in french
    [ Hits: 1682 | Votes: 0 | Rating: 0 ]
Antennas : Quadrifilar Helix
  • 137 MHz QHF Quadrifilar APT Antenna - This version of the 135MHz quadrifilar antenna for APT reception is an adaptation from Bill Sykes and Bob Cobey's article Taming the QFH which appeared in the March 1997 RIG magazine.
    [ Hits: 6745 | Votes: 34 | Rating: 4.95 ]
Antennas : Theory
  • Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?
    [ Hits: 638 | Votes: 0 | Rating: 0 ]
Antennas : W3DZZ
  • 7 Mhz traps for W3DZZ - Homebrewing traps for the W3DZZ wire dipole Antennas. Article in Dutch with some interesting pictures
    [ Hits: 15711 | Votes: 28 | Rating: 4.89 ]
Internet and Radio : WebSDR
  • HB9FX Internet Remote Base JN37XH Hochwacht Zofingen Switzerland - Online web receiver powered by OpenWebRX based in Switzerland. You can isten between 10kHz - 10GHz frequencies. Receiver is operated by HB9BHU Rig VLF/HF/VHF: Airspy HF+, Magnetic Loop/Discone Rig SHF X-Band LNB, RTL-SDR, Stacked Slot Antenna
    [ Hits: 14057 | Votes: 111 | Rating: 6.7 ]

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