1. FCC ID
  2. 2BBCJ
  3. 2BBCJ-RUMBLEM23

FCC ID 2BBCJ-RUMBLEM23

NOISE-ISOLATING WIRELESS EARBUDS

by Elgin Engineering LLC

Grantee Code: 2BBCJ   Product Code: RUMBLEM23
Latest application date: 2025-12-26

FCC ID Device Details

FCC ID2BBCJ-RUMBLEM23
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2BBCJ
Product CodeRUMBLEM23
Applicant BusinessElgin Engineering LLC 🇺🇸
Equipment ClassNOISE-ISOLATING WIRELESS EARBUDS
Test FirmSHENZHEN CTA TESTING TECHNOLOGY CO., LTD.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzOriginal Equipment2025-12-26

Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2025-12-26PDF 935.6 KB
Int photoInternal Photos2025-12-26PDF 860 KB
Ext photoExternal Photos2025-12-26PDF 491.6 KB
Label and LocationID Label/Location Info2025-12-26PDF 127.9 KB
Test setup photoTest Setup Photos2025-12-26PDF 469.7 KB
Antenna SpecTest Report2025-12-26PDF 476.6 KB
FCC Appendix RF Test Data for BTTest Report2025-12-26PDF 5.5 MB
Test ReportTest Report2025-12-26PDF 3.1 MB
Attestation Statements-KasperskyAttestation Statements2025-12-26PDF 159.7 KB
Attestation Statements-Not CoveredAttestation Statements2025-12-26PDF 141.4 KB
US Agent attestationAttestation Statements2025-12-26PDF 115.9 KB
Confidentiality requestCover Letter(s)2025-12-26PDF 121.7 KB
Model differenceCover Letter(s)2025-12-26PDF 215 KB
POACover Letter(s)2025-12-26PDF 102.5 KB
RF exposureRF Exposure Info2025-12-26PDF 560 KB
Block diagram Metadata onlyBlock DiagramPDF 193.2 KB
Schematics Metadata onlySchematicsPDF 104.8 KB
Operational Description Metadata onlyOperational DescriptionPDF 128.9 KB

Application Information

Application IDfQTBeeCejjso+PKjcBwidQ==
Final Action Date2025-12-26
Application PurposeOriginal Equipment
Applicant FRN0033812421
ModelRUMBLEM23
Frequency Range2402-2480 MHz
Equipment ClassDSS - Part 15 Spread Spectrum Transmitter
Device DescriptionNOISE-ISOLATING WIRELESS EARBUDS
Responsible PartyJames Ghormley, wehoosam@gmail.com , +1 8176888381
Non-Technical ContactJames Ghormley, Elgin Engineering LLC, wehoosam@gmail.com , +1 8176888381
Test FirmEric Wang, SHENZHEN CTA TESTING TECHNOLOGY CO., LTD., wangxulai@cta-test.cn , 86-755-2322-5875
TCB Emailjoe_chew@derycom-us.com
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term ConfidentialityNo
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceNo
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
fQTBeeCejjso+PKjcBwidQ==2025-12-26Original Equipment

Equipment Authorization

FrequencyOutputRules
2402-2480 MHz0.001115C

Grants

TCB Grant - Application fQTBeeCejjso+PKjcBwidQ==

TCB GRANT OF EQUIPMENT
AUTHORIZATION		 TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

  DERYCOM CERTIFICATION SERVICES, INC.
1100 Falcon Avenue
Glencoe, MN 55336
Date of Grant: 12/26/2025

Application Dated: 12/26/2025
Elgin Engineering LLC
2020 E Randol Mill Rd #307
Arlington, TX 76011
 
Attention: James Ghormley ,

NOT TRANSFERABLE
EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.
 
FCC IDENTIFIER:  2BBCJ-RUMBLEM23
Name of Grantee:  Elgin Engineering LLC
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: NOISE-ISOLATING WIRELESS EARBUDS
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
15C 2402.0  -  2480.0 0.0011  

Output power listed is conducted power.