Additional propagation data for the Eastern Mediterranean. In bilateral and multilateral negotiations during the Conference, some administrations in the Eastern Mediterranean (East of 30° E) calculated the field strength for 1% of the time for oversea paths using the following formulae: E = 106.9 – 20 log d – 0.07 d for 10 ≤ d < 100 E = 99.9 – 20 log d for 100 ≤ d ≤ 568 where E = 78.9 – 0.06 d for d > 568 d = path length in km, E = field strength in dB(μV/m). – 23 – Annex 2 FIGURE 2.1 Field strength (dB(μV/m)) for 1 kW e.r.p. h1 h1 h1 m 37. = m 75 = m 0 = 15 m 300 1 = m 600 1 = h 0 m 1 20 1 = h 90 80 70 60 50 Field strength (dB(μV/m)) 40 10 – 30 – 40 – 50 10 20 50 100 200 400 600 800 1 000 Logarithmic scale Linear scale Distance (km) 02-01 Propagation over land 50% of the time; 50% of the locations; h2 = 10 m Free space Propagation curves for the broadcasting service Annex 2 – 24 – FIGURE 2.2 Field strength (dB(μV/m)) for 1 kW e.r.p.
Additional propagation data for the Eastern Mediterranean. In bilateral and multilateral negotiations during the Conference, some administrations in the Eastern Mediterranean (East of 30° E) calculated the field strength for 1% of the time for oversea paths using the following formulae: E = 106.9 – 20 log d – 0.07 d for 10 ≤ d < 100 E = 99.9 – 20 log d for 100 ≤ d ≤ 568 where E = 78.9 – 0.06 d for d > 568 d = path length in km, E = field strength in dB(μV/m). – 23 – Annex 2 FIGURE 2.1 Field strength (dB(μV/m)) for 1 kW e.r.p. h1 = 1 200 m h1 = 600 m h1 = 300 m h1 = 150 m h1 = 75 m h1 = 37.5 m 80 70 60 50 Field strength (dB(μV/m)) 40 10 – 20 – 30 – 40 – 50 10 20 50 100 200 400 600 800 1 000 Logarithmic scale Linear scale Distance (km) 02-01 Propagation over land 50% of the time; 50% of the locations; h2 = 10 m Free space Propagation curves for the broadcasting service Annex 2 – 24 – FIGURE 2.2 Field strength (dB(μV/m)) for 1 kW e.r.p. h 1 = 1 200 m h 1 = 600 m h 1 = 300 m h1 = 150 m h1 = 75 m h1 = 37.5 m 80 60 50 Field strength (dB(μV/m)) 40 10 – 30 – 40 – 50 10 20 50 100 200 400 600 800 1 000 Logarithmic scale Linear scale Distance (km) 02-02 Propagation over sea 50% of the time; 50% of the locations; h2 = 10 m Free space – 25 – Annex 2 FIGURE 2.3 Field strength (dB(μV/m)) for 1 kW e.r.p. h 1 = 1 200 m h 1 = 600 m h 1 = 300 m h1 = 150 m h1 = 75 m h1 = 37.5 m 80 60 50 Field strength (dB(μV/m)) 40 10 – 30 – 40 – 50 10 20 50 100 200 400 600 800 1 000 Logarithmic scale Linear scale Distance (km) 02-03 Propagation over land 1% of the time; 50% of the locations; h2 = 10 m Free space Annex 2 – 26 – Field strength (dB(μV/m)) for 1 kW e.r.p. h1 = 37.5 m h1 = 75 m h1 = 150 m h1 = 300 m h1 = 600 m h1 = 1 200 m 90 80 70 60 50 Field strength (dB(μV/m)) 40 10 – 20 – 30 – 40 – 50 10 20 50 100 200 400 600 800 1 000 Logarithmic scale Linear scale Distance (km) 02-04 Propagation over cold sea 1% of the time; 50% of the locations; h2 = 10 m Free space – 27 – Annex 2 FIGURE 2.5 Field strength (dB(μV/m)) for 1 kW e.r.p. h1 = 150 m h1 = 75 m h1 = 37.5 m h1 = 1 200 m h1 = 600 m h1 = 300 m 80 70 60 50 Field strength (dB(μV/m)) 20 hh11 == 37.537,5 mm 10 – 30 – 40 – 50 10 20 50 100 200 400 600 800 1 000 Logarithmic scale Linear scale Distance (km) 02-05 Propagation over warm sea (excluding areas subject to extreme super-refractivity) 1% of the time; 50% of the locations; h2 = 10 m Free space Annex 2 – 28 – CHAPTER 3 Technical standards and transmission characteristics for the sound broadcasting service
