Publisher : ITU

ITU-R QUESTION 223/7 PDF

The role of differential GPS networks in timing applications

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ITU-R QUESTION 224/1 PDF

Technical convergence with respect to terrestrial fixed, mobile, and broadcasting interactive multimedia applications and the associated regulatory environment

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ITU-R QUESTION 225-5/3 PDF

The prediction of propagation factors affecting systems at LF and MF including the use of digital modulation techniques

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ITU-R QUESTION 225/5 PDF

Interference to the aeronautical and maritime mobile services in the HF bands by unauthorized stations

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ITU-R QUESTION 226-3/3 PDF

Ionospheric and tropospheric characteristics along satellite-to-satellite paths

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ITU-R QUESTION 226/5 PDF

Characteristics of and protection criteria for radars operating in the radiodetermination service

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ITU-R QUESTION 226/7 PDF

Frequency sharing between the radio astronomy service and other services in bands above 70 GHz

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ITU-R QUESTION 227-1/3 PDF

HF channel simulation

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ITU-R QUESTION 227/4 PDF

Technical and operational characteristics of emergency communications in the mobile-satellite service

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ITU-R QUESTION 228-1/3 PDF

Propagation data required for the planning of radiocommunication systems operating above 275 GHz

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