Narrowband_requirement_letter

FCC ID: 2AJTU-S6

Cover Letter(s)

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FCCID_4353443

Guangzhou SOUTH Surveying & Mapping Instrument Co., Ltd. No.39, Sicheng Road, Tianhe District, Guangzhou, China Date: July 8, 2019 Office of Engineering and Technology Laboratory Division Equipment Authorization Branch Federal Communications Commission Laboratory 7435 Oakland Mills Road Columbia, MD 21046 Subject: Narrowband Requirement for FCC ID: 2AJTU‐S6 Dear Sir or Madam; We, South Surveying & Mapping Technology Co., Ltd. declares that the Digital radio meets 47CFR Section 90.203(j)(4) and 90.203(j)(5) spectrum efficiency requirement; This Digital radio is support 25 KHz for GMSK (digital modulation; Emission Designator: 16K6G1D for data modes, also this Digital radio designed in accordance with ETSI TS 102 361‐1 requirement, will at least support 19200 bits per second in a 25 KHz channel bandwidth, GMSK will refer 4 time slots in one 25 KHz bandwidth accordance to ETSI ETS 102 361‐1, which equal with 19200/4 = 4800 bits per second in one 6.25 KHz channel bandwidth; We, South Surveying & Mapping Technology Co., Ltd. declares that the Digital radio capable of operating on the nationwide public safety interoperability calling channel (463.625MHz), meets 47CFR Section 90.203(j)(1) requirement; Sincerely, (Signed) Name/Title: ShuSheng Wen / vice president Company: South Surveying & Mapping Technology Co., Ltd. Address: No.39, Sicheng Road, Tianhe District, Guangzhou, China Phone: +86‐13922455286 Fax: +86‐20‐22131299 E‐Mail: wenss@southgnss.com


Document Created: 2019-07-08 19:25:40
Document Modified: 2019-07-08 19:25:40
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