Wireless:Regulations

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FCC Power regulations in US

2.4 Ghz Point to Point

  • Upto antenna gain 6dBi: Max EIRP = 36 dbM
  • For antenna gain > 6 dBi: For every 3dBi additional gaim, subtract 1 dBm from power output
Max EIRP = 36                       ... Gain <= 6dBi
         = 36 + (2/3)*(Gain-6)      ... Gain > 6dBi

5.8 Ghz Point to Point

  • Upto antenna gain 6dBi: Max EIRP = 36 dbM
  • For antenna gain > 6 dBi: Max power = 30 dbM
Max EIRP = 36                       ... Gain <= 6dBi
         = 36 + Gain                ... Gain > 6dBi

2.4 Ghz Point to Multioint

  • For all antenna gains: Max EIRP = 36 dbM

5.8 Ghz Point to Multioint

  • For all antenna gains: Max EIRP = 30 dbM

References

http://www.rflinx.com/help/calculations/

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