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300-425 · Question #87

What is the attenuation value of a human body on a wireless signal?

The correct answer is A. 3 dB. Signal Attenuation Signal attenuation or signal loss occurs even as the signal passes through air. The loss of signal strength is more pronounced as the signal passes through different objects. A transmit power of 20 mW is equivalent to 13 dBm. Therefore, if the transmitted…

Wireless Site Survey

Question

What is the attenuation value of a human body on a wireless signal?

Exhibit

300-425 question #87 exhibit

Options

  • A3 dB
  • B4 dB
  • C6 dB
  • D12 dB

How the community answered

(52 responses)
  • A
    88% (46)
  • B
    2% (1)
  • C
    4% (2)
  • D
    6% (3)

Explanation

Signal Attenuation Signal attenuation or signal loss occurs even as the signal passes through air. The loss of signal strength is more pronounced as the signal passes through different objects. A transmit power of 20 mW is equivalent to 13 dBm. Therefore, if the transmitted power at the entry point of a plasterboard wall is at 13 dBm, the signal strength is reduced to 10 dBm when exiting that wall. This table shows the likely loss in signal strength caused by various types of objects. Signal Attenuation Caused By Various Types of Objects deploy-guide.html#:~:text=and%20Multipath%20Distortion-,Signal%20Attenuation,- Related%20Information

Topics

#RF attenuation#human body#signal loss

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