C2PC Request Letter 2

FCC ID: PPD-AR5BXB63

Cover Letter(s)

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FCCID_1143389

To Whom It May Concern: We, Atheros Communications, hereby apply for Class II permission change to the approved product under FCC ID PPD-AR5BXB63, to portable category when applied in the laptop platform PC-81006N. Due to the design of the platform resulting in less than 20cm distance to human body, we have tested the platform with the PPD-AR5BXB63 device for SAR. Radiated emission testing was not additionally performed due to the following: - The PPD-AR5BXB63 module was assessed compliant to radiated emission limits per 15.247.in its initial FCC approval. Original FCC testing was performed with an antenna of higher gain. The current platform uses an antenna of the same type but of lower gain across the emission bands. Hence it is apparent that the current platform yields lower level of radiated emission. - The original FCC testing on module PPD-AR5BXB63 was performed when the antenna was connected to the module in an open environment. The current platform under application has the antenna installed inside the laptop enclosure. The physical restraints introduced by the laptop enclosure results in lower level of radiated emission. Please kindly review the application documents submitted and grant approval for this permissive change application. Sincerely, Caroline Yu, Regulatory Engineer Atheros Communications 5480 Great America Parkway Santa Clara, CA 95054-3644 Atheros Communications, Inc. 5480 Great America Parkway Santa Clara CA 95054 t 408 773 5200 f 408-773-9940 www.atheros.com


Document Created: 2009-07-10 23:34:03
Document Modified: 2009-07-10 23:34:03
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