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Specific frequency allocations vary from country to country and between ITU regions as specified in the current ITU HF frequency allocations for amateur radio. [1] The list of frequency ranges is called a band allocation, which may be set by international agreements, and national regulations. The modes and types of allocations within each ...
The R-S-T system is used by amateur radio operators, shortwave listeners, and other radio hobbyists to exchange information about the quality of a radio signal being received. The code is a three digit number, with one digit each for conveying an assessment of the signal's readability, strength, and tone.
The 6-millimeter or 47 GHz band is a portion of the EHF radio spectrum internationally allocated to amateur radio and amateur satellite use between 47.0 GHz and 47.2 GHz. [ 1 ] Due to the lack of commercial off the shelf radios, amateurs who operate on the 6 mm band must design and construct their own equipment. [ 2 ]
The World Administrative Radio Conference (WARC) bands are three portions of the shortwave radio spectrum used by licensed and/or certified amateur radio operators. They consist of 30 meters (10.1–10.15 MHz), 17 meters (18.068–18.168 MHz), and 12 meters (24.89–24.99 MHz).
The 5-centimeter or 5 GHz band is a portion of the SHF radio spectrum internationally allocated to amateur radio and amateur satellite use on a secondary basis. In ITU regions 1 and 3, the amateur radio band is between 5,650 MHz and 5,850 MHz. In ITU region 2, the amateur radio band is between 5,650 MHz and 5,925 MHz.
Members of the ham radio activity group at RWTH Aachen University designed and developed DAPNET from scratch as a modern software approach. [ 1 ] As of March 2018, over 90 transmitters were already in permanent operation, and the coverage area included parts of Germany , the Netherlands , Belgium , and Switzerland , [ 2 ] with Raspberry Pi ...
The 9-centimeter band is a portion of the SHF radio spectrum internationally allocated to amateur radio and amateur satellite use. The amateur radio band, in ITU regions 1 and 2, is between 3.300 GHz and 3.500 GHz, and it is available only on a secondary basis. The amateur satellite band is between 3.400 GHz and 3.410 GHz, and it is only ...
The 1.2-centimeter or 24 GHz band is a portion of the SHF radio spectrum internationally allocated to amateur radio and amateur satellite use. The amateur radio band is between 24.00 GHz and 24.25 GHz, and the amateur satellite band is between 24.00 GHz and 24.05 GHz.