RF Exposure Assessment

Product Information

The equipment under test (EUT) is the onn. 4K Streaming Box with Bluetooth 5.0 (dual-mode) function. It operates in the following frequency bands:

• Bluetooth: 2402-2480MHz
• 2.4G WIFI: 2412-2462MHz
• 5G WIFI: 5150MHz~5250 MHz, 5250MHz~5350MHz, 5470MHz-5725MHZ, 5725MHz~5850MHz

FCC ID: 2AYYS-8822K4VTG

Bluetooth 5.0 RF Exposure

Bluetooth Version: 5.0

Antenna Type: Integral antenna

Antenna Gain: 2.29dBi

Modulation Type: GFSK, π/4DQPSK, 8DPSK

Nominal Radiated Output Power (e.i.r.p): -3.5dBm (+/- 3dB)

According to KDB 447498:

• Maximum peak radiated emission (EDR mode, 2402MHz): 89.2dBuV/m at 3m. EIRP = -6.03dBm.
• Minimum peak radiated emission (BLE mode, 2480MHz): 90.8dBuV/m at 3m. EIRP = -4.43dBm.

The source-based time averaged maximum radiated power is -0.5dBm = 0.89mW.

The exposed power density at 20cm from the antenna for 5.0 BLE mode is calculated as 0.0002 mW/cm², which is less than the MPE limit of 1.0 mW/cm².

Compliance is ensured by maintaining a minimum 20cm separation between the transmitter's radiating structure and the user's body.

2.4GHz WiFi RF Exposure

Antenna Type: Integral Antenna

Antenna Gain: Antenna1: 2.78dBi, Antenna2: 2.61dBi. MIMO: 5.7dBi

Modulation Type: BPSK, QPSK, 16QAM, 64QAM, CCK, DQPSK, DBPSK and DSSS

Nominal Conducted Output Power: 23dBm (Tolerance: +/-3dB)

Maximum conducted output power (IEEE 802.11n-HT20, 2437MHz): 27.0dBm.

Minimum conducted output power (IEEE 802.11b, 2412MHz): 20.9dBm.

The source-based time averaged maximum radiated power is 26dBm + 5.7dBi = 31.7dBm = 1479.11mW.

The exposed power density at 20cm from the antenna for 2.4GHz band is calculated as 0.2944 mW/cm², which is less than the MPE limit of 1.0 mW/cm².

Compliance is ensured by maintaining a minimum 20cm separation between the transmitter's radiating structure and the user's body.

5GHz WiFi RF Exposure

Antenna Type: Integral Antenna

Antenna Gain: Antenna1: 4.34dBi, Antenna2: 4.02dBi. MIMO: 7.19dBi

Modulation Type: BPSK, QPSK, 16QAM, 64QAM and OFDM

Nominal Conducted Output Power: 16dBm (Tolerance: +3dB/-10dB)

Maximum conducted output power (IEEE 802.11 ac-HT80, 5775MHz): 19.5dBm.

Minimum conducted output power (IEEE 802.11 ac-HT20, 5320MHz): 6.54dBm.

The source-based time averaged maximum radiated power is 18dBm + 7.19dBi = 25.19dBm = 330.37mW.

The exposed power density at 20cm from the antenna for 2.4GHz band is calculated as 0.0658 mW/cm², which is less than the MPE limit of 1.0 mW/cm².

Compliance is ensured by maintaining a minimum 20cm separation between the transmitter's radiating structure and the user's body.

Simultaneous Transmission RF Exposure

According to 865664D02 2.2 d) 1):

• 2.4GHz WiFi and 5GHz WiFi: Sum of MPE ratios = 0.2944/1 + 0.0658/1 = 0.3602 < 1
• 2.4GHz WiFi and Bluetooth: Sum of MPE ratios = 0.2944/1 + 0.0002/1 = 0.2946 < 1
• 5GHz WiFi and Bluetooth: Sum of MPE ratios = 0.0658/1 + 0.0002/1 = 0.0660 < 1
• 2.4GHz WiFi, Bluetooth and 5GHz WiFi: Sum of MPE ratios = 0.2944/1 + 0.0002/1 + 0.0658/1 = 0.3604 < 1

Since the sum of the MPE ratios for all simultaneously transmitting antennas is ≤ 1.0, the EUT satisfies MPE compliance for simultaneous transmission operations.

RF Exposure Statement: "FCC RF Radiation Exposure Statement Caution: This Transmitter must be installed to provide a separation distance of at least 20 cm from all persons.”