RF exposure

FCC ID: NM8STA100

RF Exposure Info

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FCCID_2059276

15. RF EXPOSURE

15.1 S TANDARD A PPLICABLE
According to §1.1307(b)(1), systems operating under the provisions of this section shall be
operated in a manner that ensure that the public is not exposed to radio frequency energy
level in excess of the Commission’s guideline.

This is a Portable device with its physical nature to be used nearby, the distance between
radiating structure and human is less than 20cm.

As per KDB 447498 D01 $4.3.1, 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

15.2 M EASUREMENT R ESULT :
Step 1: (<50mW)
This is a portable device and the Max peak output power is (1.99mW) lower than the threshold
given and derived as formula given above, where

=1.99 (mW)/5 (mm)*√0.915 (GHz) = 0.621< 3.0

Frequency Power (avg in dBm) Power (avg mw) Distance (mm) Threshold (<50mm)
2441 2.986 1.988840705 5 0.621461008

Frequency Reading Power Output Power Limit
(MHz) (dBm) (W) (W)
2441 2.986 0.00199 1 Watt = 30 dBm

As the result of calculation result indicates, the RF exposure generating from given transmitter
(transmitter employed digital modulation) can be excluded from SAR measurement, and is
deemed compliant with RF exposure as per FCC.

Document Created: 2019-11-10 07:00:10
Document Modified: 2019-11-10 07:00:10

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