18_Expedition Express+ RFExp r1

FCC ID: CCREXPRESS

RF Exposure Info

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FCCID_4403805

Dongguan Nore Testing Center Co., Ltd.
Report No.: NTC1904207F-1
FCC ID: CCREXPRESS

RF EXPOSURE EVALUATION

EUT Specification
EUT Portable PA System
Frequency band WLAN: 2.412GHz ~ 2.462GHz
(Operating) WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz
WLAN: 5.745GHz ~ 5825GHz
Others(Bluetooth: 2.402GHz ~ 2.480GHz)
Device category Portable (<20cm separation)
Mobile (>20cm separation)
Others ___
Antenna diversity Single antenna
Multiple antennas
Tx diversity
Rx diversity
Tx/Rx diversity
Max. output power 3.331 dBm (2.153mW)
Antenna gain 0 dBi
Evaluation applied MPE Evaluation
SAR Evaluation

Limits for Maximum Permissible Exposure (MPE)

Frequency Electric Field Magnetic Field Power Density(mW/cm2)
Range(MHz) Strength(V/m) Strength(A/m)
300-1500 -- -- F/1500
1500-100000 -- -- 1

$Dongguan Nore Testing Center Co., Ltd. Report No.: NTC1904207F-1 FCC ID: CCREXPRESS Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm2 Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result Channel Gain Channel Max Output Tolerance Max Power Power Frequency power (dBm) Tune-UP density at density (MHz) power 20cm Limits (mW) (mW/ cm2 ) (mW/cm2 ) GFSK Low 0 2402 2.601 ±0.5 2.04 0.00041 1 Middle 0 2441 2.235 ±0.5 1.88 0.00037 1 High 0 2480 2.043 ±0.5 1.80 0.00036 1 π/4-DQPSK Low 0 2402 3.331 ±0.5 2.42 0.00048 1 Middle 0 2441 2.936 ±0.5 2.21 0.00044 1 High 0 2480 2.750 ±0.5 2.11 0.00042 1$

Document Created: 2019-08-19 15:34:28
Document Modified: 2019-08-19 15:34:28