CONTENTS - RECOMMENDATION ITU-R P.1321-4 - Propagation factors affecting systems using digital modulation techniques at LF and MF

Policy on Intellectual Property Right (IPR)
Annex 1
1     Introduction
2     Propagation modes
        2.1     Ground wave mode
        2.2     Sky-wave modes
3     Multipath time spread
4     Variability
        4.1     Time-variations signal in daytime
                  4.1.1     Seasonal variations
                  4.1.2     Day-by-day variations of the hour median
        4.2     Variations of a signal in daytime from place to place
        4.3     Variations of a signal in night-time
        4.4     The characteristics of excesses and fades in LF and MF ionosphere channels
5     Conclusions
Appendix 1 to Annex 1
Appendix 2 to Annex 1