number station

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Building a VHF Contest Station - Building an amateur station for competitive radiosport involves a number of critical steps, regardless of the band or bands you focus on. These include, but are certainly not limited to: Station layout, Equipment interconnection and switching, Inter-station interference, Antenna selection. Radio interface with the logging program, CW and voice keyer integration, Rotator control
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Estimated International Sunspot Number - The estimated international sunspot number (EISN) is a daily value obtained by a simple average over available sunspot counts from prompt stations in the SILSO network.
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E10 Mossad Number Station - Information about the E10 mossad number station with sample sound files, comple message transcriptions and general information
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Decoding Numbers Stations - QST Article - Exploring these mysterious transmissions and how their strong following has created a niche in the community. Free article in PDF Format from QST November 2019
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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.
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Spy Numbers Recordings - From the sortwave radio audio archive, a collection of recordings of several spy numbers stations, russian, spanish, cuban audio recordings
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