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353 links - and 7 categories

Antennas : 2M Antennas : 80M
  • K9AY terminated loops for 75m - It is very compact, low noise and directive with an impressive 20 to 25 dB front to back
    [ Hits: 363 | Votes: 0 | Rating: 0 ]
Antennas : Halo
  • 144 MHz Halo Antenna - This halo antenna was built to have an omnidirectional coverage while working in VHF contests.
    [ Hits: 3017 | Votes: 6 | Rating: 5 ]
Antennas : HexBeam
  • Understanding the Hexbeam Antenna - The Hexbeam is a great little antenna! It should be high on your list of options if you want a design that can be multi-banded, exhibits useful gain and directivity, is very lightweight, has a small turning radius, and which lends itself readily to Do It Yourself construction.
    [ Hits: 505 | Votes: 4 | Rating: 8 ]
Antennas : Satellite
  • Dish antenna - Dish antenna and its theory and design for high performance applications such as satellite transmission and reception as well as microwave links. Parabolic Reflector Antenna: Dish Antenna The parabolic reflector antenna which is often called the dish antenna provides an antenna solution applicable for VHF and above where high gain and directivity are needed for all type of radio communications and radio reception.
    [ Hits: 1026 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • Discone antenna - About the basics of what is a discone antenna for wide band or bandwidth omnidirectional applications
    [ Hits: 923 | Votes: 1 | Rating: 2 ]
Antennas : WiFi
  • Cookie Cantenna Wi-Fi - Make a cheap, portable, high performance (15-18 db) directional antenna out of commonly available parts that can be purchased in most grocery and hardware stores.
    [ Hits: 6565 | Votes: 5 | Rating: 7.6 ]
Antennas : Yagi
  • 2-El Portable Yagi for 10-20 mt - This Yagi has a constant element-distance of 1,50 m. You must only correct the lengths of the elements for QSY, see table down. For the bands 10 m and 12 m the Yagi is working as a reflector-radiator-Yagi, for 15 m and 17 m as a beam with radiator and director.
    [ Hits: 3189 | Votes: 5 | Rating: 5.2 ]
Ham Radio : Band Plans : Frequency coordination
  • Kansas Repeaters - Kansas Repeaters directory
    [ Hits: 224 | Votes: 2 | Rating: 1.5 ]
Operating Modes : Amateur Television
  • ATV Directory - The amateur television directory
    [ Hits: 325 | Votes: 0 | Rating: 0 ]
Operating Modes : Radio Direction Finding Operating Modes : WiFi : Long Range WiFi
  • HSMM Long Range WiFi - High Speed Multimedia Radio Introduction by ARRL Working Group Chairman. Report of the High Speed Multimedia (HSMM) Working Group ARRL Board of Directors 2006 Annual Meeting January 22, 2004
    [ Hits: 670 | Votes: 1 | Rating: 10 ]
Radio Equipment : HF Transceivers : Yaesu FT-857 Software : Macintosh
  • PocketPacket Mac OS - PocketPacket started as an APRS client for iPhone/iPod Touch/iPad devices, but is also available for the Mac desktop or laptop. PocketPacket incorporates a software-based TNC, allowing you to directly capture and visualize, or encode and transmit 1200 baud packets (AFSK modulation) using a VHF radio transceiver.
    [ Hits: 1099 | Votes: 2 | Rating: 7.5 ]
Technical Reference : ATV Technical Reference : Digital ATV projects
  • The express-pizza antenna - Build a directional antenna for the 1.2 GHz band, in 15 minutes
    [ Hits: 539 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Direction Finding Technical Reference : Receivers
  • IN3 DC-RX - One-Cubic-Inch Direct-Conversion Receiver
    [ Hits: 396 | Votes: 0 | Rating: 0 ]
Technical Reference : Spectrum Analyzers

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