E22 Bluetooth Earbuds RF Exposure Info RF Exposure My Music Group Limited

My Music Group Limited Bluetooth Earbuds

FCC ID Filing: QIF-E22
Purchase on Amazon: Bluetooth Earbuds

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Document TypeRF Exposure Info
Document TitleRF Exposure

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RF Exposure evaluation
Product Description: Bluetooth Earbuds
Model Number: E22
FCC ID: QIF-E22
According to 447498 D01 General RF Exposure Guidance v05 The 1-g and 10-g SAR test
exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are
determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test
separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,
where
f(GHz) is the RF channel transmit frequency in GHz
Power and distance are rounded to the nearest mW and mm before calculation
According to the follow transmitter output power(Pt)formula:
Pt=(E x d)2/(30 x gt)
Pt=transmitter output power in watts
gt=numeric gain of the transmitting antenna (unitess)
E=electric field strength in V/m
d=measurement distance in meters (m)
According to the formula described above:
Emax=94.10dBuv/m=0.051V/m, d=3m, gt=1
Pt=(E x d)2/(30 x gt)=(0.051x3)2 / (30x1)=0.0007803W=0.78mW
The result is rounded to one decimal place for comparison
Worse case is as below: [2441MHz -0.78mW output power]
(0.78mW / 5mm)*[√2.441(GHz)] = 0.24mW < 3.0 for 1 - g SAR
Then SAR evaluation is not required
NOTE: For the maximum power, you can refer FCC test report.
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Document ID3548176
Application IDFhlJldNKOm9hrBsV2jGcIA==
Document DescriptionRF Exposure
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeRF Exposure Info
Display FormatAdobe Acrobat PDF - pdf
Filesize12.98kB (162309 bits)
Date Submitted2017-09-07 00:00:00
Date Available2017-09-07 00:00:00
Creation Date2017-09-01 09:43:43
Producing SoftwareMicrosoft® Office Word 2007
Document Lastmod2017-09-01 09:43:43
Document TitleRF Exposure
Document CreatorMicrosoft® Office Word 2007
Document Author: USER

Source Exif Data:
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Author                          : USER
Creator                         : Microsoft® Office Word 2007
Create Date                     : 2017:09:01 09:43:43
Modify Date                     : 2017:09:01 09:43:43
Producer                        : Microsoft® Office Word 2007

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