FCC ID: YETG41-CE Cellular Signal Booster with BLE

Product Label (G41-CE) SIZE: 2.5 x 1 Donor Port Side FCC Label (All AMER Variants) SIZE: 3.0 x 0.5 Consumer Label (G41-CE) Server Port Side SIZE: 2.5 x 1

12230 World Trade Drive Suite 250 San Diego California 92128 Sincerely, Witsoe Read CTO & V.P. Engineering, Nextivity To Whom It May Concern:

I hereby appoint C K Li to sign ietters and applications for any filings with regulatory agencies on our behalf, and to receive and exchange data between our company, the agents company and the agency in connection with certification for any products that our company owns or manufactures. 858.485.9442 (main) 858-485.9445 (fax) info@nextivity.com www.nextivitvinc.com Plz equiaidas AL AILXAN

16550 West Bernardo Drive, Suite 550, San Diego, CA 92127, USA Tel: +1 858.485.9942 Date: Oct 30, 2023 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Ref: Attestation Statements Part 2.911(d)(7) Filing (ID: YETG41-CE) To whom it may concern:

Nextivity, Inc. (the applicant) certifies that, as of the date of the filing of the application, Nextivity, Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Nextivity, Inc. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Nextivity Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information:

Nextivity, Inc. 16550 West Bernardo Drive, Suite 550, San Diego, CA 92127, USA Name:

Address:

Contact Person: C K Li Tel.:

Email:

FRN:

1-858-485-9442 cli@nextivityinc.com 0019823665 Sincerely, C K Li Applicant and U.S. agent

16550 West Bernardo Drive, Suite 550, San Diego, CA 92127, USA Tel: +1 858.485.9942 Date: Oct 30, 2023 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Ref: Attestation Statements Part 2.911(d)(5)(i) and Part 2.911(d)(5)(ii) Filing Re. KDB 986446 D01(FCC ID: YETG41-CE) To whom it may concern:

Nextivity, Inc. (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. We also certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. If you have any questions, please contact us. Yours sincerely, C K Li, Technical Director of Regulatory Name, function, signature

16550 West Bernardo Drive, Suite 550, San Diego, CA 92127, USA Tel: +1 858.485.9942 Date: Sept 28, 2023 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Attestation pursuant to KDB 935210 D02 III(c) for FCC ID: YETG41-BE To whom it may concern:

In accordance with KDB 935210 D02 III(c), we attest to the following facts:

Nextivity has received licensee consents for the use and certification of the Cel-

Fi Provider Specific Consumer Signal Booster. NPS and other compliance/safeguard features have been implemented. NPS and other compliance/safeguard features are ON by default. NPS and other compliance/safeguard features cannot be field reconfigured, disabled or removed. QUATRA 4000 Provider Specific Consumer Signal Booster is not user programmable and does not need fine tuning or adjustments and does not require professional installation. Future software upgrades will not cause non-compliance. Yours sincerely, C K Li, Technical Director of Regulatory Name, function, signature

16550 West Bernardo Drive, Suite 550, San Diego, CA 92127, USA Tel: +1 858.485.9942 Date: Oct 30, 2023 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Confidentiality Request FCC ID: YETG41-CE Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commissions Rules, Nextivity Incorporated hereby requests permanent confidential treatment of information accompanying this application as outlined below:

Schematics Bill of Materials/Parts List Block Diagrams Theory of Operation Tune-up Procedure Nextivity Incorporated also hereby requests short-term confidential treatment of information accompanying this application as outlined below for a period of period of 180 days:

Internal Photos External Photos User Manual and Legal Insert Test Set-up Photos The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Yours sincerely, C K Li, Technical Director of Regulatory Name, function, signature

G41 Bluetooth Antenna test data Rev. 1.1 7/28/2023 Gain Max gain: -7.1dB Test Data Freq 2.40E+09 2.44E+09 2.48E+09 0

-9.38 L M -7.11

-7.30 H BT 45

-12.86

-11.47

-11.92 90

-17.37

-15.72

-16.90 Antenna Angle 180 135

-35.29

-18.78

-37.10

-18.43

-19.31

-33.21 225

-28.38

-27.91

-27.87 270

-27.84

-25.51

-27.34 315

-12.75

-10.63

-10.69 2400MHz 2440MHz 2480MHz Max Average

-7.1

-19.63 BAND BT Gain

(dB) Phi=0 rotating Theta Dan G 7/27/2023 Bluetooth Antenna Manufacturer: Nextivity