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• G3SEK's Amateur Radio Technical Notebook - A lot of good informations concerning antennas, filters, moonbounce, and circuitry data.
  [ Hits: 4669 | Votes: 23 | Rating: 4.69 ]

• N. American Data Communications Museum - Telephony technology from telegraph to digital transmission
  [ Hits: 1057 | Votes: 0 | Rating: 0 ]

• AT DX news - Alfa Tango DX searchable database
  [ Hits: 2237 | Votes: 3 | Rating: 9 ]

• Longwave Non-Directional Beacons - Beacons operating in the longwave radio spectrum, generally between 200 and 450 kHz
  [ Hits: 5407 | Votes: 14 | Rating: 5.79 ]

• Mongolia DX Association - Mongolian DX club with a lot of dx info and an online DX newsletter
  [ Hits: 658 | Votes: 3 | Rating: 1.67 ]

• OK1RR DX & Contesting Page - Almost a fresh QSL manager Database, Country Tables for YPLOG by VE6YP (updated monthly), Additional files for the TRLoog by N6TR. Technical topics for HF Contesting (mostly CW), software download (a huge collection)
  [ Hits: 3319 | Votes: 496 | Rating: 7.98 ]

• QSL INFO SYSTEM by IK4LZH - QSL database lookup provided by IK4LZH
  [ Hits: 1113 | Votes: 1 | Rating: 10 ]

• OK1CDJ Ondrej - VHF, UHF page, technical articles, projects, datasheets
  [ Hits: 3553 | Votes: 14 | Rating: 7.93 ]

• Grey Line Map - Earth view, with satellite data provided by The Living Earth.
  [ Hits: 14446 | Votes: 73 | Rating: 6.5 ]

• Belden Wire & Cable Company - Cables for any electrical application, with data sheets, comparisons, and on-line catalog.
  [ Hits: 3941 | Votes: 4 | Rating: 4.75 ]

• Kantronics - Kantronics produce Modems, Tnc, Kam, Marine, wireless modems. Packet radio communication devices, HF E-mail, paging, GPS tracking, weather data gathering, or wireless data transmission.
  [ Hits: 9057 | Votes: 9 | Rating: 4.11 ]

• Distance and Bearing Finder - This service uses data from the US Census and a supplementary list of cities around the world to find the latitude and longitude of two places, and then calculates the distance between them. It also provides a map showing the two places, using the Xerox PARC Map Server.
  [ Hits: 10506 | Votes: 35 | Rating: 5.14 ]

• NAVSTAR GPS Timing Operations - NAVSTAR GPS Timing Operations, USNO GPS Data & Information Files Global Positioning System Overview Current GPS Constellation, GPS Time Transfer Operations, GPS & Glonass Satellite Visibility
  [ Hits: 819 | Votes: 2 | Rating: 6.5 ]

• Ionosphere Web Site - Ionospheric Data Archived at NGDC
  [ Hits: 828 | Votes: 1 | Rating: 9 ]

• Solar Region Data - SunSpots - Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions
  [ Hits: 4440 | Votes: 13 | Rating: 4.84 ]

• CT Contest Logging Program Utilities - My MMPRINT utility is a post contest tool that lets you extract statistical data from a CT log file
  [ Hits: 1535 | Votes: 6 | Rating: 5.5 ]

• CQRLOG - Advanced ham radio Linux logger based on Firebird database. Provides radio control based on hamlib libraries, DX cluster connection, QRZ callbook, a grayliner, ON6DP QSL manager database support and a most accurate country resolution algorithm based on country tables developed by OK1RR. CQRLOG is strongly focused on easy operation and maintenance.
  [ Hits: 2727 | Votes: 9 | Rating: 7.22 ]

• Lux-Log - Ham logging software capable of handling up to 30,000+ log-books using one database and one image copy, and many more features by Norbert Oberweis - LX1NO / KM6RY
  [ Hits: 3232 | Votes: 35 | Rating: 7.37 ]

• Radio Component Database - Technical documentation for Radio Component`s
  [ Hits: 3420 | Votes: 11 | Rating: 6.36 ]

• Amateur Repeater Builders - Radio Mods, Technical Data, where to Purchase Equipment Amateur Repeater Coordination. All you need to build a repeater
  [ Hits: 6936 | Votes: 5 | Rating: 6.8 ]

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