Cover letter on reduced temperature range

FCC ID: TA8AKRC11822-2

Cover Letter(s)

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FCCID_805478

Ericsson Internal EXHIBIT 13 1 (1) Prepared (also subject responsible if other) No. EAB/FJW/GRD Thomas Odén Approved Checked Date Rev Reference KI/EAB/FJW/GRD Thomas Odén 2007-05-30 A TA8AKRC11822-2 Federal Communications Commission SP Sveriges Provnings- och ForskningsInstitut Authorization & Evaluation Division Brinellgatan 4 7435 Oakland Mills Road Box 857 Columbia, Maryland 21046 S-501 15 Borås Attention: Equipment Authorization Branch Sweden June 11, 2007 Subject: Temperature Range Information for Certification for FCC ID: TA8AKRC11822-2 To Whom It May Concern: Enclosed are requests of a Grant of Certification (Type Acceptance) for the above-mentioned FCC Identifier from Ericsson AB. The Temperature Range for this base station transceiver (Radio Unit – RU) are designed together with the cabinet and other boards for use in a temperature range of 0º C to +50º C. The base station transceiver (RU) is equipped with a thermal sensor that shut down the exciter power amplifier in the RU in a controlled way at temperatures below -2º C and above + 52º C. The frequency stabilizing circuitry and the power amplifier are still in stand-by mode below and above these temperatures to be prepared to transmit with proper function if the environment temperature reaches the applicable temperature range again. There is also a non- destruction temperature range outside the range above where the base station is shut down totally. If additional information is needed, please contact me on the below listed number. Regards, Thomas Odén Staff Engineer, Regulatory Programs Ericsson AB FCC Registration Number (FRN): 0013476155 Torshamnsgatan 21-23 (Färögatan 6) Kista, SE-164 80 Stockholm Sweden Telephone No.: +46 8 404 26 60 Fax No.: +46 8 404 44 20 e-mail thomas.oden@ericsson.com


Document Created: 2007-05-30 14:29:59
Document Modified: 2007-05-30 14:29:59
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