RF Exposure Info

FCC ID: KMH-SYNCG4

RF Exposure Info

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FCCID_4445534

FCC MPE CALCULATION (FCC ID: KMH-SYNCG4)
RF Exposure Requirements: 47 CFR §1.1307(b)

RF Radiation Exposure Limits: 47 CFR §1.1310

RF Radiation Exposure Guidelines: FCC OST/OET Bulletin Number 65

EUT Frequency Band: BT/BLE: 2402-2480MHz
WLAN 802.11b/g/n: 2412-2462MHz
802.11a/n: 5180-5320MHz, 5500-5720MHz, 5725-5825MHz
802.11n-40MHz: 5190-5310MHz, 5510-5710MHz, 5755-5795MHz
802.11ac: 5210-5290MHz, 5530-5690MHz, 5775MHz

Limits for General Population/Uncontrolled Exposure in the band of: 300 - 1500 MHz,
Power Density Limit: f/1500 mW/cm2
Limits for General Population/Uncontrolled Exposure in the band of: 1500 - 100,000 MHz
Power Density Limit: 1 mW / cm2

Equation: S = PG / 4R2 or R = √PG / 4S
Where, S = Power Density
P = Power Input to Antenna
G = Antenna Gain
R = distance to the center of radiated antenna
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Prediction distance 20 cm
EUT: SYNC-G4

Max Conducted
Antenna Gain Separation Power Density MPE Limit (mW/
Radio Frequency (MHz) Output Power
(dBi) distance (cm) (mW/ cm2) cm2)
(dBm)
BT/BLE 2402-2480 11.559 2.68 20 0.005 1
WLAN 11b/g 2412-2462 18.34 4.95 20 0.042 1
WLAN 11a/n/ac 5725-2825 17.926 9.70 20 0.115 1

The above results show that the device complies with the MPE requirement.
The BT/BLE is able to transmit simultaneously with WLAN, LTE.
The ratio = 0.005/1 + 0.042/1 + 0.115/1 = 0.162 < 1.0
The above results show that the device complies with the simultaneous transmission MPE requirement.
Completed By: David Zhang
Vista Laboratories, Inc.
1261 Puerta Del Sol, San Clemente, CA 92673
Date: Sep 10th, 2019

Document Created: 2019-09-12 12:11:48
Document Modified: 2019-09-12 12:11:48

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