C2PC Letter

FCC ID: 2ARF2ML-310

Cover Letter(s)

Download: PDF
FCCID_4191212

                                                                               12 East Devonwood
S OLVING A W AVE OF EMI C OMPLIANCE P ROBLEMS                                  Romeoville, IL 60446
February 20, 2019                                                              Tel: (815) 293-0772
Page 1 of 2                                                                    Fax: (815) 293-0820

Federal Communications Commission
Authorization and Evaluation Division
7435 Oakland Mills Rd.
Columbia, MD 21046

Reference FCC ID: 2ARF2ML-310

Regarding: Application for a Class II Permissive Change/Reassessment

Organization: New Cosmos Electric Co., Ltd.
This Methane Gas Detector, Model ML-310CE, has been previously certified under the ID numbers listed
above. We would like the modified product to certified under the same ID numbers.

Following is a description of the change that was made to the ML-310CE daughter board.

   1. The ground plane was improved by minimizing vias. (See PCB layout below)
   2. The antenna impedance matching circuit was optimized for new layout.

                                              Before




                                                   Page 1 of 2                              RP-9012


                                                After




The PCB was not changed. The Antenna, RF power and modulation have not changed.
All other design elements of the PCB remain the same as the current FCC compliant product. The
antenna was not changed. The Low Pass Filter was not changed.

Authorized Signature




Joseph Strzelecki
Senior EMC Engineer
Radiometrics Midwest Corporation
Authorized Agent for New Cosmos Electric Co., Ltd.




                                                     Page 2 of 2                            RP-9012



Document Created: 2019-02-25 13:28:02
Document Modified: 2019-02-25 13:28:02

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