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Antennas : 160M
  • 160 Meter Antennas at W8JI - 160-meter vertically polarized transmitting antennas center around this 200-foot tower
    [ Hits: 3963 | Votes: 1 | Rating: 10 ]
  • Building High Power, High Q, Loading Coils - This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter band (1.83 MHz) vertical antenna.
    [ Hits: 6885 | Votes: 5 | Rating: 5.4 ]
Antennas : 40M
  • 40-80 Half-Extended Double Zepp Antenna - A dual-bander for 80M and 40m. An Extended Double Zepp (EDZ) is a 5/4 wavelength center-fed dipole. This article will introduce the Half-Extended Double Zepp (HEDZ) which has characteristics that a lot of amateur radio operators should find quite interesting
    [ Hits: 11391 | Votes: 9 | Rating: 4.44 ]
Antennas : 40M : 40 meter Loop Antennas
  • Dual Loop 80 and 40 Meter  pop - A dual loop antenna, ZZ Wave Net HF Wire Antenna Project by VE6VIS. The antenna is basically a full wave 80 meter loop on top and a 40 meter loop on the bottom all supported from a 64 foot center support
    [ Hits: 25267 | Votes: 16 | Rating: 5.38 ]
Antennas : Array
  • The 7-Hex Driven Vertical Array - The array consists of 7 vertical antennas arranged as 6 verticals in a hexagon shape plus 1 additional vertical in the center of the hexagon
    [ Hits: 1782 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • Shortened Center-Fed Half-Wave Dipole - Design your owm HF shiortened dipole. Includes a diagram of a lumped-constant loaded dipole antenna that is intended to fit in available space, rather than requiring a full 1/2 wavelength, at a specified frequency
    [ Hits: 2878 | Votes: 6 | Rating: 9.83 ]
  • 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 ]
  • K7MEM - Inverted V Antenna Design - Inverted V antennas is a dipole with the center raised on a mast and the endpoints near ground. Calculate dimensions online.
    [ Hits: 4431 | Votes: 13 | Rating: 6.61 ]
Antennas : Multiband
  • 6-Band Windom antenna  pop - Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio bands
    [ Hits: 50562 | Votes: 45 | Rating: 6.82 ]
  • What make the carolina windom so good - The off-center fed CAROLINA WINDOM provides outstanding performance on all bands. This includes all the WARC bands, 30, 17, and 12 meters.
    [ Hits: 6613 | Votes: 3 | Rating: 4.67 ]
Antennas : OCF
  • 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: 12131 | Votes: 13 | Rating: 5.15 ]
  • Fundamentals of Off-Center-Fed Dipoles - Off-center-fed dipoles (OCFs) are 1/2-wavelength wire antennas fed at neither the center nor the end, but somewhere between--off-center
    [ Hits: 4496 | Votes: 2 | Rating: 5.5 ]
Ham Radio : Clubs : North America : USA : Ohio
  • K8HO Highland ARA - The Highland Amateur Radio Association (HARA) centers itself in Hillsboro, Ohio.
    [ Hits: 661 | Votes: 4 | Rating: 7.75 ]
Propagation : Observatories
  • Geophysical Alert Message wwv.txt - Broadcast via WWV and WWVH at 18 and 45 minutes past the hour. This message is updated every 3 hours. Reports current Solar-terrestrial indinces, Solar Flux, A-index, K-Index, forecast for space weather storms. Prepared by the US Dept. of Commerce, NOAA, Space Environment Center
    [ Hits: 1670 | Votes: 11 | Rating: 8.26 ]
Shopping and Services : RF Tubes
  • The Tube Center - Supplying over 2000 different vacuum tube types, valves, grid caps, sockets and capacitors. It is easy for Antique collectors, Ham radio operators, audio enthusiasts, broadcast enthusiasts and amateur radio hobbyists to buy, sell and trade vacuum tubes, electron tubes, audio tubes, valves, grid caps, sockets and capacitors
    [ Hits: 827 | Votes: 1 | Rating: 10 ]
Shopping and Services : Radio Equipment Repair
  • AVVid - Repair service - Amateur Radio Service Center, quality repair of Kenwood and Some Icom equipment, TX USA
    [ Hits: 1208 | Votes: 7 | Rating: 7.71 ]
Shopping and Services : Regional : Europe : Italy
  • Radio Center - Dealer for Kenwood, Icom, Yaesu, Intek, Midland.
    [ Hits: 705 | Votes: 2 | Rating: 9 ]
Software : Antenna analysis
  • NEC4WIN - NEC4WIN is a 32 bits commercial antenna simulation software based on MININEC3 developed by the Naval Ocean Systems Center in the 70s and 80s. It runs under Windows and can be used to simulate, analyze and optimize wire antennas, beams, verticals, etc. NEC4WIN has limitations. They are the same as Mininec3 on which the engine is based.
    [ Hits: 1873 | Votes: 2 | Rating: 7 ]
Software : Grid Bearing and Maps
  • Pizza - This program allows both great-circle (polar) and rectangular projections of the world. The great-circle map is centered on any specified latitude and longitude (the "home" location). The rectangular projection is shown with the home longitude in the middle of the screen.
    [ Hits: 1344 | Votes: 4 | Rating: 7.75 ]
Software : Propagation
  • Propagation Wizard - Freeware windows application that help in determine the availability of a shortwave link, by Rohde & Schwarz
    [ Hits: 2787 | Votes: 4 | Rating: 7.25 ]

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