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87 links - and 2 categories

Antennas : Antenna Calculators
  • Archimedean Spiral Antenna Calculator Priority listing - This free online archimedean spiral antenna calculator uses a wire grid method of moments formulation to model a single or multiple arm spiral. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed. Requires Silverlight installed.
    [ Hits: 539 | Votes: 13 | Rating: 3.38 ]
  • Circular Loop Antenna Calculator Priority listing - This free online circular loop antenna calculator uses a wire grid method of moments formulation to model a single circular loop with a single feed point. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
    [ Hits: 630 | Votes: 14 | Rating: 4.50 ]
  • Dipole Antenna Calculator  updated Priority listing - This free online dipole antenna calculator uses a wire grid method of moments formulation to model a single center fed dipole. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
    [ Hits: 923 | Votes: 20 | Rating: 3.94 ]
  • Equiangular Spiral Antenna Calculator Priority listing - This free online equiangular spiral antenna calculator uses a wire grid method of moments formulation to model a single or multiple arm spiral. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed.
    [ Hits: 476 | Votes: 18 | Rating: 4.77 ]
Antennas : Helical
  • Helix Antenna Calculator  updated Priority listing - This free online helix antenna calculator uses a wire grid method of moments formulation to model a single or multiple arm. The electric current is computed and used to construct the far zone radiation power pattern. The input impedance and directivity are also computed. Requires Silverlight installed.
    [ Hits: 688 | Votes: 16 | Rating: 5.32 ]
DX Resources : Beacons : 10 meter beacons
  • N1KXR/B - Ten-Meter Propagation Beacon - N1KXR/B went on the air at 21:00 Hours EST on Saturday, November 22, 2008 and has been in continual operation. Located in Northampton, Massachusetts [USA] (grid square: FN32), it transmits 24/7/365 and is coordinated with the IARU Region 2 HF Beacon Coordinator.
    [ Hits: 102 | Votes: 1 | Rating: 10.00 ]
Ham Radio : Clubs : Technical Specialty
  • Grid Bandits - Formed in June 2007, Our Mission is To Promote VHF/UHF Weak Signal Activities In North America. Membership is open to all operators
    [ Hits: 210 | Votes: 0 | Rating: 0.00 ]
Ham Radio : Regional : Brazil
  • Brazil Grid Map - Ham Radio grid map of Brazil
    [ Hits: 169 | Votes: 4 | Rating: 7.00 ]
Operating Aids : Grid Squares
  • Grid Square Locator Map - Ham Radio Maidenhead Grid Square Locator Geocoding with Google Maps by by HA8TKS
    [ Hits: 1554 | Votes: 12 | Rating: 7.75 ]
  • Grid Locator Intro - This page introduces the world IARU Grid Locator system, and discusses how to find out what your own Grid Locator is.
    [ Hits: 88 | Votes: 0 | Rating: 0.00 ]
Operating Aids : Maps
  • EI8IC Ham Radio Maps - A large collection of amateur radio maps, including CQ and ITU Zones, a complete set of ham radio Prefix Maps, grid locators and time zones map. An excellent ham radio mapping service.
    [ Hits: 473 | Votes: 1 | Rating: 9.00 ]
  • DX World Map - A large jpeg DX World map that include ITU Zones, grid squares and prefixes
    [ Hits: 843 | Votes: 3 | Rating: 10.00 ]
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