Attestations_20190114_v1 - Attestation (HAC Declaration)

FCC ID: A4RG020A

Cover Letter(s)

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FCCID_4154161

Google LLC 1600 Amphitheatre Parkway Mountain View, CA 94043 650 253-0000 main Google.com Federal Communications Commission Office of Engineering & Technology Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: January 11, 2019 Re: Declaration – MIF for HAC RF Interference Evaluation To Whom It May Concern, This device with FCC ID: A4RG020A, will be certified for Hearing Aid Compatibility under ANSI C63.19-2011 version pursuant to Part 20.19 of the Commission’s rules. The M rating was determined by measuring the maximum steady state average E-field values in dB (V/m) as documented in the HAC report and adding the MIF value in dB (V/m) using pre- determined values provided by Speag as set forth in the table below: UID Reversion Communication System Name MIF (dB) 10021 DAC GSM-FDD (TDMA, GMSK) 3.63 10025 DAC EDGE-FDD (TDMA, 8PSK, TN 0) 3.75 10460 AAA UMTS-FDD (WCDMA, AMR) -25.43 10225 CAB UMTS-FDD (HSPA+) -20.39 10081 CAB CDMA2000 (1xRTT, RC3) -19.71 10295 AAB CDMA2000, RC1, SO3, 1/8th Rate 25 fr. 3.26 10403 AAB CDMA2000 (1xEV-DO, Rev. 0) -17.67 10170 CAE LTE-FDD (SC-FDMA, 1 RB, 20 MHz, 16-QAM) -9.76 10172 CAG LTE-TDD (SC-FDMA, 1 RB, 20 MHz, QPSK) -1.62 10173 CAG LTE-TDD (SC-FDMA, 1 RB, 20 MHz, 16-QAM) -1.44 10174 CAG LTE-TDD (SC-FDMA, 1 RB, 20 MHz, 64-QAM) -1.54 10061 CAB IEEE 802.11b WiFi 2.4 GHz (DSSS, 11 Mbps) -2.02 10077 CAB IEEE 802.11g WiFi 2.4 GHz (DSSS/OFDM, 54 Mbps) 0.12 10427 AAB IEEE 802.11n (HT Greenfield, 150 Mbps, 64-QAM) -13.44 10069 CAC IEEE 802.11a/h WiFi 5 GHz (OFDM, 54 Mbps) -3.15 10616 AAB IEEE 802.11ac WiFi (40MHz, MCS0, 90pc duty cycle) -5.57 The Speag-reference documentation for supporting the pre-determined MIF value is Schmid &

Partner Engineering AG, UID SUMMARY (Communication Systems for Calibration, Issued Date 2018/09/25). We confirm that the Speag simulation provided represents all of the air interface modes applicable for a HAC rating for this handset. Sincerely Yours, Hedy Hsieh Regulatory Certification Program Manager Google LLC 1600 Amphitheatre Parkway Mountain View, CA 94043, USA Phone: +886 2 8729 0540 Email: hedyhsieh@google.com


Document Created: 2019-01-14 15:50:24
Document Modified: 2019-01-14 15:50:24
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