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Factors retarding transmission of radio signals underground, and some further experiments and conclusions

Line radio and the effects of metallic conductors on underground communication

Published Year

• 1920-1929 (2)

Subject

• Radio--Receivers and reception (2) *
• Radio--Transmitters and transmission (2)
• Telecommunication (2)
• Geophone (1)

Author

• Jakosky, Jay John, (2)
• Zellers, Donald Henry, (2)

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