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Propagation of radio waves in ferriferous rocks and ores

✍ Scribed by N. M. Savchenko


Publisher
Springer
Year
1981
Tongue
English
Weight
253 KB
Volume
17
Category
Article
ISSN
1573-8736

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Propagation of UHF radio waves in trapez
✍ G. X. Zheng; J. H. Sheng; Y. P. Zhang πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 88 KB πŸ‘ 1 views

Measurements of the propagation of UHF radio wa¨es in two trapezoidal tunnels are reported. Values of propagation loss in dBr100 m are gi¨en. It is found that the propagation attenuates at least 900 MHz. In addition, a portable FM radio system operating at 900 MHz is tested in one tunnel. It achie¨e