Letter of declaration narrowband requirement

FCC ID: 2ABUB-D668U1

Cover Letter(s)

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FCCID_3602071

SHENZHEN SAMHOO SCI&TECH CO., LTD. Room 401, Building 2, Huaqiangyun Industrial Park, Meixiu Rd., Meilin, Futian District Shenzhen, 518049, China Date: September 14, 2017 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: 2ABUB-D668U1 Dear Sir or Madam; This Digital Two-Way Radio was designed to operate in the frequency bands 400-470MHz; We, SHENZHEN SAMHOO SCI&TECH CO.,LTD. will disable 25KHz mode by radio at firmware at factory and end-user cannot use 25KHz mode in order to compliance with FCC mandate for Part 90 frequencies; We, SHENZHEN SAMHOO SCI&TECH CO.,LTD. declares that the Digital Two-Way Radio meets 47CFR Section 90.203(j)(4) and 90.203(j)(5) spectrum efficiency requirement; This Digital Two-Way Radio is support both 12.5 KHz for FM (analog modulation; Emission Designator:11K0F3E for voice) and 4FSK (digital modulation; Emission Designator: 7K60FXD for data/7K60FXW for both data and voice) modes, also this Digital Two-Way Radio designed in accordance with ETSI TS 102 361-1 requirement, will at least support 9600 bits per second in a 12.5 KHz channel bandwidth, 4FSK will refer 2 time slots in one 12.5 KHz bandwidth accordance to ETSI ETS 102 361-1, which equal with 9600/2=4800 bits per second in one 6.25 KHz channel bandwidth; We, SHENZHEN SAMHOO SCI&TECH CO.,LTD. declares that the Digital Two-Way Radio capable of operating on the nationwide public safety interoperability calling channel (453.2125 MHz), meets 47CFR Section 90.203(j)(1) requirement; Sincerely, (Signed) Name/Title: Lin Yuan / Director of Certification Company: SHENZHEN SAMHOO SCI&TECH CO.,LTD. Address: Room 401, Building 2, Huaqiangyun Industrial Park, Meixiu Rd., Meilin, Futian District Shenzhen, 518049, China Phone: +86-0755 8226 7833 Fax: +86-0755 8226 3733 Email: yl@samhoo.com.cn


Document Created: 2017-09-21 08:24:57
Document Modified: 2017-09-21 08:24:57
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