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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 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 ]
This map shows all the countries that currently have an official Amateur Radio presence on 5 MHz / 60 m, whether it be by WRC-15, Article 4.4, Special Individual Permits, Trial and/or Emergency Basis, or any combination of these. The 60-meter band or 5MHz band is a relatively new amateur radio allocation.
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.
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 2.5-millimeter or 122 GHz band is a portion of the EHF radio spectrum internationally allocated to amateur radio use between 122.250 GHz and 123.000 GHz. [1]The band is close to a molecular resonance of oxygen at 120 GHz, which causes significant atmospheric propagation losses, similar to that found at 60 GHz.
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 ...