Empirical Formula for Propagation Loss in Land Mobile Radio Services

Masaharu Hata

Research output: Contribution to journalArticlepeer-review

1941 Citations (Scopus)


An empirical formula for propagation loss is derived from Okumura's report in order to put his propagation prediction method to computational use. The propagation loss In an urban area is presented in a simple form: A + B log10R, where A and B are frequency and antenna height functions and R is the distance. The introduced formula is application to system designs for UHF and VHF land mobile radio services, with a small formulation error, under the following conditions: frequency range 100–1500 MHz, distance 1–20 km, base station antenna height 30–200 m, and vehicular antenna height 1–10 m.

Original languageEnglish
Pages (from-to)317-325
Number of pages9
JournalIEEE Transactions on Vehicular Technology
Issue number3
Publication statusPublished - Aug 1980
Externally publishedYes

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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