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numbers

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Operating Modes : Morse code : Learning Morse Code
  • Morse code practice - A comprehensive morse code auduio guide with several youtube movies classified by skill level, characters and numbers, sentences, speed level and more. All movies are linked by an interactive interface that let you select the speed and the excercise type. The page contains an downloadable set of morse code exercises and several other resources
    [ Hits: 134 | Votes: 0 | Rating: 0 ]
Propagation : Sunspots
  • Sunspot Index Since 1750 - The yearly, black, up to 1750, and monthly red, from 1750 up to now, sunspot numbers provided by the Royal Observatory of Belgium SILSO
    [ Hits: 115 | Votes: 0 | Rating: 0 ]
Shortwave Radio : Numbers stations
  • Spy Numbers Stations - Spy Numbers Stations are shortwave radio stations that are speculated to have been broadcasting since World War I. The true origin and purpose of them are unknown. A popular theory is that these stations are intended for spies in the field using a One Time Pad. Another theory is that they are used in drug smuggling operations.
    [ Hits: 173 | Votes: 0 | Rating: 0 ]
  • Spy Numbers Recordings - From the sortwave radio audio archive, a collection of recordings of several spy numbers stations, russian, spanish, cuban audio recordings
    [ Hits: 124 | Votes: 0 | Rating: 0 ]
Software : Circuit Design
  • Amidon ferrite toroids calculator - Select the toroid by material type and dimension of the toroid, the desired inductance and you will get the numbers of turns
    [ Hits: 391 | Votes: 3 | Rating: 6 ]
Software : Morse Code Training
  • AGWMorseTrainer - A windows program to learn Morse code and doing QSO in CW. The training course contains 39 Lessons based on Koch method. It can sends only letters, only numbers, only punctuation
    [ Hits: 212 | Votes: 0 | Rating: 0 ]

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