SAR Exclusion

FCC ID: YCK-DR750S-2CH

RF Exposure Info

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FCCID_3579045

Appendix J. Radio Frequency Exposure FCC ID: YCK-DR750S-2CH Standard Applicable: 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 20 cm. As per KDB 447498 D01, 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 The result is rounded to one decimal place for comparison Measurement Result: This is a portable device and the Max tune up power is (2.82 mW) lower than the threshold given and derived as above, where = 2.82 (mW) / 5 (mm) * √2.462 (GHz) = 0.88 < 3.00 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. Output Target Allowed Max tune Max tune Separation Type of Frequency RF Power power tolerance up power up power distance Limit Modulation [MHz] exposure [dBm] [dBm] [dB] [dBm] [mW] [mm] 2 412 3.27 1.50 ± 2.00 3.50 2.24 5 0.70 3.00 802.11n 2 437 3.82 2.00 ± 2.00 4.00 2.51 5 0.78 3.00 (HT20) 2 462 4.17 2.50 ± 2.00 4.50 2.82 5 0.88 3.00 2 422 3.34 1.50 ± 2.00 3.50 2.24 5 0.70 3.00 802.11n 2 442 3.58 2.00 ± 2.00 4.00 2.51 5 0.78 3.00 (HT40) 2 462 3.86 2.00 ± 2.00 4.00 2.51 5 0.79 3.00 Report no. ETLT170809.0107, Page J1 of J1 Head Office: #371-51, Gasan-dong, Geumcheon-gu, Seoul, 153-803, Korea Tel : 82-2-858-0786 Fax : 82-2-858-0788 Open site: #499-1, Sagot-ri, Seosin-myeon, Hwaseong-si, Gyeonggi-do, 445-882, Korea ETLQP-21-F40-0


Document Created: 2017-09-21 14:00:11
Document Modified: 2017-09-21 14:00:11
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