
Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.
Emerson Radio Corp. Date: 2019-08-13 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2ALCVCKS1507N Pursuant to Sections 0.457 and 0.459 of the Commissionβs Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type Schematics Block Diagram Operational Description File Name CKS1507_Schematics.p df CKS1507 _Block Diagram.pdf CKS1507_Operational Description.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Emerson Radio Corp. Signature Brian Leung / Engineering Manager Typed name and Title
Emerson Radio Corp. FCC ID: 2ALCVCKS1507N POWER OF ATTORNEY Date: 2019-08-13 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Waltek Services (ShenZhen) Co., Ltd. (Philo Zhong) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Services (ShenZhen) Co., Ltd. (Philo Zhong) on our behalf shall have the same effect as acts of our own. This authorization expires on 2020-08-12. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Emerson Radio Corp. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Emerson Radio Corp. Signature Brian Leung / Engineering Manager Typed name and Title
Emerson Radio Corp. Date: 2019-08-13 Subject: authorization for adding family models To whom it May concern, Statement We would like to confirm the models CKS1507 and CKS1600 are identical in electrical, physical and mechanical constructions except with different model number and different color used in LED display or housing. The model CKS1507 is the tested sample. Emerson Radio Corp. Signature Brian Leung / Engineering Manager ................................................ Typed name and Title
Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn M odel CKS1507 - External Photos Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn
CKS1507_Label Sample and Label Location
Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn M odel CKS1507 - Internal Photos ANT Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn
Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn FCC ID: 2ALCVCKS1507N RF Exposure Report Test Requirement: FCC Part 1.1307 Evaluation Method: FCC Part 2.1091 & KDB 447498 D01 General RF Exposure Guidance v06 Requirements Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2 m normally can be maintained between the user and the device. The procedures / limit (A) Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.06141.63(100)*6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-30061.40.1631.06 300-1500F/3006 1500-100,00056 (B) Limit s for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.346141.63(100)*30 1.34-30824/f2.19/f(180/f)*30 30-30027.50.0730.230 300-1500F/150030 1500-100,0001.030 Note: f = frequency in MHz; *Plane-wave equivalent power density Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn MP E Calculation Method SοΌ 2 4R GP ο΄ο΄ ο΄ ο° S = power de nsity (in appropriate units, e.g. mW/cm 2 ) P = output power to the antenna (in appropriate units, e.g., mW). G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain. R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) From the peak EUT RF output power, the minimum mobile separation distance, R=20cm, as well as the gain of the used antenna, the RF power density can be obtained Antenna Gain (dBi) Antenna Gain (numeric) Max. conducted Output Power (dBm) Max. conducted Output Power (mW) Power Density (mW/cm2) Limit of Power Density (mW/cm2) Reult -0.58 0.875 4.14 2.59 0.00045 1 Compliance Result: Compliance No SAR measurement is required.
Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn Page 1 of 57 TEST REPORT Re ference No. .................... : WTS19S08055122W FCC ID........................... : 2ALCVCKS1507N Applicant ........................... : Emerson Radio Corp. Address ............................. : 35 Waterview Blvd, Parsippany, New Jersey 07054, United States Manufacturer .................... : HE XUN ELECTRONICS CO.,LTD Address ............................. : Building A, Xingda Industrial Park, Jinhu Industrial District, Chenjiang Town, Zhongkai Hi-tech Industrial Development Zone, Huizhou City, Guangdong, China Product .............................. : Alarm Clock Radio with Bluetooth Model(s) ............................. : CKS1507, CKS1600 Brand Name ....................... : Emerson Standards .......................... : FCC CFR47 Part 15 Section 15.247:2019 Date of Receipt sample .... : 2019-08-08 Date of Test ....................... : 2019-08-09 to 2019-08-28 Date of Issue ..................... : 2019-08-29 Test Result ........................ : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Services (Shenzhen) Co., Ltd. Address: 1/F., Fukangtai Building, West Baima Road, Songgang Street, Baoan District, Shenzhen, Guangdong, China Test site/Test location: Waltek Services (Shenzhen) Co., Ltd. Address: 1/F., Fukangtai Building, West Baima Road, Songgang Street, Baoan District, Shenzhen, Guangdong, China Tel :+86-755-83551033 Fax:+86-755-83552400 Compiled by: Approved by: Robin Zhou / Test Engineer Philo Zhong / Manager Reference No.: WTS19S08055122W Page 2 of 57 Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn 1 Contents Page 1 CONTENTS ............................................................................................................................................................ 2 2 REVISION HISTORY ............................................................................................................................................ 4 3 GENERAL INFORMATION .................................................................................................................................. 5 3.1 GENERAL DESCRIPTION OF E.U.T ................................................................................................................. 5 3.2 DETAILS OF E.U.T ........................................................................................................................................... 6 3.3 CHANNEL LIST ................................................................................................................................................. 6 3.4 TEST MODE ..................................................................................................................................................... 6 4 EQUIPMENT USED DURING TEST .................................................................................................................. 7 4.1 EQUIPMENTS LIST ........................................................................................................................................... 7 4.2 MEASUREMENT UNCERTAINTY ....................................................................................................................... 8 4.3 SUBCONTRACTED ............................................................................................................................................ 8 5 TEST FACILITY ..................................................................................................................................................... 8 6 TEST SUMMARY .................................................................................................................................................. 9 7 CONDUCTED EMISSION .................................................................................................................................. 10 7.1 E.U.T. OPERATION ....................................................................................................................................... 10 7.2 EUT SETUP ................................................................................................................................................... 10 7.3 MEASUREMENT DESCRIPTION ...................................................................................................................... 11 7.4 CONDUCTED EMISSION TEST RESULT ......................................................................................................... 11 8 RADIATED EMISSIONS ..................................................................................................................................... 13 8.1 EUT OPERATION ........................................................................................................................................... 13 8.2 TEST SETUP .................................................................................................................................................. 14 8.3 SPECTRUM ANALYZER SETUP ...................................................................................................................... 15 8.4 TEST PROCEDURE ........................................................................................................................................ 16 8.5 CORRECTED AMPLITUDE & MARGIN CALCULATION ..................................................................................... 16 8.6 SUMMARY OF TEST RESULTS ....................................................................................................................... 17 9 BAND EDGE MEASUREMENT .......................................................................................................β¦
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Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn Model CKS1507 Test Setup Photos P hotograph-Conducted Emissions Test Setup Photos P hotograph β Radiation Spurious Emission Test Setup Photos 9 kHz to 30 MHz Reference No.: WTS19S08055122W Waltek Services (Shenzhen) Co.,Ltd. http://www.waltek.com.cn From 30 MHz to 1GHz Above 1G Hz
| # | Rule Parts | Frequency Range | Power Output |
|---|---|---|---|
| 1 | 15C | 2.40 GHz - 2.48 GHz | 2.59 mW |

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