RECOMMENDATION ITU-R P CALCULATION OF FREE-SPACE ATTENUATION. (). Rec. ITU-R P The ITU Radiocommunication. ITU-R P Foreword. The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio- frequency. ITU-R P 1. ITU-R P *. (). . 1. 1. 1. 1. 2. ) .: d p = e. (1).: e.: (V/m).) 1(p.: (W).) 2(d.: (m).

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Characteristics of precipitation for propagation modeling. Radio-frequency channel arrangements for high-capacity fixed wireless systems operating in the lower 6 GHz 5 to 6 MHz band.

Radio-frequency channel and block arrangements for fixed wireless systems operating in the 42 GHz Error performance and availability estimation for synchronous digital hierarchy terrestrial fixed wireless systems. Characteristics of digital fixed wireless systems below about 17 GHz. Availability objectives for real digital fixed wireless links used in 27 km hypothetical reference paths and connections.

Radio-frequency channel arrangements for medium- and high-capacity digital fixed wireless systems operating in the upper 6 GHz 6 MHz band. Radio-frequency channel arrangements for fixed wireless systems operating in the 10 GHz band. Propagation data and prediction methods required for the design of terrestrial line-of-sight systems. Vocabulary of terms for the fixed service. Effects of multipath propagation on the design and operation of line-of-sight digital fixed wireless systems.

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Radio-frequency channel arrangements for radio-relay systems operating in the 15 GHz band.

P : Calculation of free-space attenuation

Radio-frequency channel arrangements for radio-relay systems operating in the 13 GHz frequency band. Hypothetical reference digital path for radio-relay systems which may form part of an integrated services digital network with a capacity above the second hierarchical level.

Radio-frequency channel arrangements for fixed wireless systems operating in the 18 GHz frequency band. Radio-frequency arrangements for fixed service ituu-r.

Radio-frequency channel arrangements for radio-relay systems operating in the 23 GHz band. Radio-frequency channel arrangements for fixed wireless systems operating in the 8 GHz 7 to 8 MHz band. Radiation pattern of reference antennas for p.25-2 wireless systems used for coordination studies and interference assessment in the frequency range between MHz and 70 GHz.

The radio refractive index: Bandwidths and unwanted emissions of digital radio-relay systems.

ITU-R Standards

Radio-frequency arrangements for systems of the fixed service operating in the 38 GHz band. Radio-frequency arrangements for systems in the fixed service operating in the band Radio-frequency channel arrangements for fixed wireless systems operating in the 7 GHz 7 MHz band. Attenuation by atmospheric gases. Unwanted emissions in the spurious domain.

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Specific attenuation model for rain for use in prediction methods. Radio-frequency arrangements for systems of the fixed service operating in the 25, 26 and 28 GHz bands.

ITU-R Recommendations

Characteristics of fixed wireless systems operating in frequency bands above about 17 GHz. Calculation of free-space attenuation. Radio-frequency channel arrangements for radio-relay systems operating in the 11 GHz band.