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Antennas : 20M Antennas : 20M : 20 meter Dipole Antennas
  • 20m mini dipole antenna - This antenna project is a compact center-loaded wire-dipole. Center-loading is the most efficient way of loading a dipole or mono-pole
    [ Hits: 1961 | Votes: 4 | Rating: 9.75 ]
Antennas : 20M : 20 meter Yagi antennas
  • 2 element yagi wire beam - A 2 element yagi wire-beam antenna for the 20 meter band based on the KJ5VW design
    [ Hits: 1853 | Votes: 7 | Rating: 3 ]
Antennas : 80M Antennas : Folded Dipole
  • Folded dipole antenna by N4SPP - A quarter size cobra dipole antenna, a multiband dipole antenna for 40 to 10 meters basedn on original cobra dipole design but with a limited space by N4SPP
    [ Hits: 2620 | Votes: 1 | Rating: 8 ]
Antennas : Magnetic Loop
  • Magnetic Loop 80-20 by N4SPP - A transmitting magnetic loop antenna that can cover from 80 to 20 meters band with a lot of experiments on coupling tecniques, and a pictures by N4SPP
    [ Hits: 2286 | Votes: 10 | Rating: 5.9 ]
Antennas : Multiband
  • W4JOH Cobra Antenna - The original Cobra antenna, is a multiband 160 or 80 to 10 meter, designed by W4JOH is built using standard insulated wire of about 14 gauge and fed with 450 ohm ladder line down to the shack into a tuner.
    [ Hits: 1709 | Votes: 1 | Rating: 10 ]
Antennas : Vertical Antennas : ZS6BKW
  • ZS6BKW Multiband antenna system - ZS6BKW optimized version of the venerable G5RV and different antenna placement on the roof and terrace by N4SPP
    [ Hits: 3200 | Votes: 5 | Rating: 4.6 ]
  • The ZS6BKW Multiband HF Antenna - Antenna design from ZS6BKW (G0GSF), similar to the G5RV, but it actually resonates on five bands It's only 90 ft long 27.51 m, with a 40 ft 12.2 m downlead
    [ Hits: 6505 | Votes: 8 | Rating: 6.88 ]
  • G5RV Antenna Revisited - GR5V characteristics and construction details PDF file a three part PDF article including the ZS6BKW antenna variation
    [ Hits: 3683 | Votes: 1 | Rating: 9 ]
DX Resources : Clusters : Mobile DX Cluster
  • DXHeat - The responsive DX Cluster, feature live dx cluster spots, available both on desktops and mobile devices with easy filtering optiosn. Offer a rich cluster analytics for each call.
    [ Hits: 1655 | Votes: 6 | Rating: 6.83 ]
Manufacturers : Antenna Masts and Mounts
  • CUE DEE - Antenna support engineering, manufacturer of antenna masts, supports, towers, self-supporting towers, telescopic masts, rooftops and wall supports
    [ Hits: 5151 | Votes: 6 | Rating: 3 ]
Operating Modes : D-STAR
  • PAPA System - The PAPA Amateur Radio repeaters are located on some of the best hill tops in Southern California!
    [ Hits: 1094 | Votes: 8 | Rating: 8.87 ]
Operating Modes : DSP
  • Digital Signals Sounds - Several files with examples of sounds from digital radio modes on short wave. PSK, RTTY Hellschreiber MFSK FSK Sitor
    [ Hits: 1625 | Votes: 6 | Rating: 5.17 ]
Operating Modes : Hellschreiber
  • How the Hellschreiber works - Hellschreiber is a teleprinting system based on low-resolution character-level facsimile. Learn how it works with animations and graphics.
    [ Hits: 492 | Votes: 0 | Rating: 0 ]
Shopping and Services : Batteries
  • The Raymond Sarrio Company - Over 3500 radio and test equipment manuals, plus an batteries for two-way radios, laptops, and camcorders.
    [ Hits: 2412 | Votes: 4 | Rating: 2.75 ]
  • Batterytech - Buy nimh, ncicad, and li-ion batteries, chargers, and analyzers for laptops, pdas, digital cameras, cellular phones, nextel radios, hand held scanners, and eliminators
    [ Hits: 749 | Votes: 1 | Rating: 10 ]
Technical Reference : Batteries
  • Batteries and QRP - Thanks to the popularity of cell phones, laptops and other personal electronic devices, the battery industry has been market-driven to produce higher capacity batteries in lighter weights than previously possible with yesterday's chemistries.As a result, a wide variety of battery types are available to the outdoor QRP operator.
    [ Hits: 504 | Votes: 0 | Rating: 0 ]
Technical Reference : Dummy Loads

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