MPE Calculation

FCC ID: T9GRAX1X2X

RF Exposure Info

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FCCID_887271

Prediction of MPE limit at given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S = PG / 4π R2 where: S = Power density P = Power input to the antenna G = Antenna gain R = Distance to the center of radiation of the antenna The table below is excerpted from Table 1B of 47 CFR 1.1310 titled “Limits for Maximum Permissible Exposure (MPE), Limits for General Population/Uncontrolled Exposure” Frequency Range (MHz) Power Density (mW/cm2) Averaging Time (minutes) 300 -1500 f/1500 30 1500 - 100000 1.0 30 where f = Frequency (MHz) Prediction: P Max power input to the antenna at 2.4 GHz: 23.3 dBm P Max power input to the antenna at 5.2 GHz: 14.1 dBm P Max power input to the antenna at 5.8 GHz: 14.4 dBm Antennas for 2.4 GHz operation:. OB-002 9 dBi DZ-PCKO-11034-0 Gain: 9 dBi OB-003 12 dBi DZ-PCKO-11034-1 Gain: 12 dBi PA-M01 12 dBi DZ-PCKO-11035-0 Gain: 12 dBi PA-L01 18 dBi DZ-PCKO-11035-1; min 20m Ecoflex 10 cable; fixed point to point operation Gain: 18-22,5 dB/100m =13.5 dBi Max EIRP for 2.4 GHz operation: 36.8 dBm Antennas for 5.2 GHz operation: OB-008 12 dBi DZ-PCKO-11036-0; min 14m Ecoflex 10 cable; Gain= 12-35.9/100m = 6.98 dBi PA-M02 14 dBi DZ-PCKO-11037-0; min 20m Ecoflex 10 cable; Gain= 14-35.9/100m = 6.82 dBi PA-L02 20 dBi DZ-PCKO-11037-1; min 37m Ecoflex 10 cable; Gain= 20-35.9/100m = 6.72 dBi Max EIRP for 5.2 GHz operation: 21.1 dBm Antennas for 5.8 GHz operation: PA-M02 14 dBi DZ-PCKO-11037-0; Gain= 14 dBi PA-L02 20 dBi DZ-PCKO-11037-1; Gain= 20 dBi Max EIRP for 2.4 GHz operation: 34.4 dBm This prediction demonstrates the following: The power density level at a distance of 20 cm with each antenna is below the maximum levels allowed by FCC regulations. Name: Harro Ames Title: Senior Engineer Company: Cetecom ICT Services GmbH Date: 2008-01-09 Signature


Document Created: 2008-01-09 11:54:21
Document Modified: 2008-01-09 11:54:21
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