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A17.1012.2
A17.1012.2
Longley-Rice model works correct in given frequency ranges, antenna heights, distance, surface refraction, as shown in Table 8793.

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T090T093T090
T093
Table 9093: Range of ITM model correctly working


 

Parameter

Range

Frequency

20 MHz – 40 GHz

Antenna height

50[A1] 

 [A1]This should be 50 cm (or 0.5 m). All the references about the ITM model give 0.5 m as the lower antenna height. For example, J. S. Seybold, "Introduction to RF Propagation," Wiley, 2005.

 

cm – 3 km

Distance

1 – 2 000 km

Surface refraction

250 -400 N

 

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