Serial number of recommendations

Authorized date

Corresponding Core content in recommendations

P.531-12

2013-09

Ionospheric propagation data and prediction methods required for the design of satellite services and systems

P.533-12

2013-09

Method for the prediction of the performance of HF circuits

P.534-5

2012-02

Method for calculating sporadic-E field strength

P.684-6

2012-02

Prediction of field strength at frequencies below about 150 kHz

P.843-1

1997-08

Communication by meteor-burst propagation

P.1147-4

2007-08

Prediction of sky-wave field strength at frequencies between about 150 and 1700 kHz

P.1240-1

2007-02

ITU-R methods of basic MUF, operational MUF and ray-path prediction

P.1321-4

2013-09

Propagation factors affecting systems using digital modulation techniques at LF and MF