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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 ]
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 : Windom
  • Windom Antenna with 4:1 balun - The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder (later versions). Here is another model with coaxial feeder, which is compatible with Solid States - 50 Ohm output transceivers .
    [ Hits: 8025 | Votes: 9 | Rating: 6.89 ]
Ham Radio : Clubs : North America : USA : Ohio
  • K8HO Highland ARA - The Highland Amateur Radio Association (HARA) centers itself in Hillsboro, Ohio.
    [ Hits: 662 | Votes: 4 | Rating: 7.75 ]
Internet and Radio : Online Receivers
  • Radio Meteors-NASA Alabama - Icom PCR 1000 at NASA Marshall Space Flight Center monitoring meteor signals on 67.3 mhz.live.
    [ Hits: 4859 | Votes: 7 | Rating: 4.29 ]
Operating Modes : DSP
  • Clover 2000 - CLOVER-2000 is a faster version of CLOVER (about four times faster) that uses eight tone pulses, each of which is 250 Hz wide, spaced at 250-Hz centers, contained within a 2 kHz bandwidth between 500 and 2,500 Hz
    [ Hits: 856 | Votes: 1 | Rating: 1 ]
Operating Modes : GPS
  • USCG Navigation Center DGPS - Differential Global Positioning Service (DGPS) is a land-based augmentation system that receives and processes signals from orbiting GPS satellites, calculates corrections from known positions and broadcasts these corrections via a Medium Frequency (MF) Transmitter to DGPS users in the Broadcast Site's coverage area.
    [ Hits: 2006 | Votes: 2 | Rating: 4.5 ]
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 ]
Propagation : Resources
  • Stanford Solar Center - Providing solar on-line activity resources for the joy of solar science exploration
    [ Hits: 558 | Votes: 0 | Rating: 0 ]
  • HF - VHF Radiowave Propagation Center - High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines. Solar Weather, Geomagnetic, Aurora, Ionospheric reports via eAlerts and webpage. WAP phone access. Live and educational resources, and more.
    [ Hits: 1434 | Votes: 2 | Rating: 7.5 ]
Shopping and Services : Antennas
  • Industrial Metal Supply Company - Full line metal service and retail center, stocking the largest variety of metals in Southern California and Arizona.
    [ Hits: 841 | Votes: 2 | Rating: 5.5 ]
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 : DX Cluster
  • DX Monitor  updated - VE3SUN DX Monitor is a standalone Windows program which monitors the DX announcements available on the internet at DX Summit and presents the information in a sortable grid format and on a map centered on your location. Price USD 39.95
    [ Hits: 13239 | Votes: 27 | Rating: 6.74 ]
Software : Grid Bearing and Maps
  • AZMap - Azimuthal maps generator - AZMap is a freeware Windows program for the Windows PC which will generate, display, and print an Azimuthal-Equidistance (A-E) map of the world, centered at any point on the surface of the earth (except very near the poles). The A-E map is also known as a Great Circle map since straight lines from the center point to any other point always fall along a great circle path and represent the shortest distance between the center and that point
    [ Hits: 10743 | Votes: 48 | Rating: 5.56 ]
  • 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 ]
Technical Reference : Alternative Power
  • CirKits - Solar power DIY kits. Homebrew your own solar power regulator, and power center.
    [ Hits: 678 | Votes: 0 | Rating: 0 ]

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