CONTENTS - RECOMMENDATION ITU-R P.1546-4 - Method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 3 000 MHz

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Annex 1 Introduction
1     The propagation curves
2     Maximum field strengths
3     Computer-based tabulations
4     Step-by-step method
5     Designation of antennas
6     Transmitting/base antenna height
7     Transmitting/base antenna heights used for curves
8     Time variability
9     Mixed-path method
10     Receiving/mobile antenna height
11     Terrain clearance angle correction
12     Location variability
13     Equivalent basic transmission loss
14     Variability of atmospheric refractive index
15     Compatibility with the Okumura-Hata method
Annex 2 Frequency range 30 MHz to 300 MHz
Annex 3 Frequency range 300 MHz to 1 000 MHz
Annex 4 Frequency range 1 000 MHz to 3 000 MHz
Annex 5 Additional information and methods for implementing the prediction method
1     Introduction
        1.1     The terminal designations
2     Maximum field-strength values
3     Determination of transmitting/base antenna height, h₁
        3.1    Land paths shorter than 15 km
                  3.1.1     Terrain information not available
                  3.1.2     Terrain information available
        3.2     Land paths of 15 km or longer
        3.3     Sea paths
4     Application of transmitting/base antenna height, h₁
        4.1     Transmitting/base antenna height, h₁, in the range 10 m to 3 000 m
        4.2     Transmitting/base antenna height, h₁, in the range 0 m to 10 m
For a land path:
For a sea path:
        4.3     Negative values of transmitting/base antenna height, h₁
5     Interpolation of field strength as a function of distance
6     Interpolation and extrapolation of field strength as a function of frequency
7     Interpolation of field strength as a function of percentage time
8     Mixed paths
        8.1     The mixed path interpolation factor, A
9     Correction for receiving/mobile antenna height
10     Correction for short urban/suburban paths
11     Terrain clearance angle correction
12     Location variability in land area-coverage prediction
13     Correction based on tropospheric scattering
14     Field-strength predictions for distances less than 1 km
15     An approximation to the inverse complementary cumulative normal distribution function
16     Equivalent basic transmission loss
17     An approximation to the 0.6 Fresnel clearance path length
Annex 6 Procedure for the application of this Recommendation
Annex 7 Adjustment for different climatic regions
Annex 8 Comparison with the Okumura-Hata method