1. FCC ID
  2. 2BUVH
  3. 2BUVH-N7161459

FCC ID 2BUVH-N7161459

Instrument Cluster

by TVS Motor Company Limited

Grantee Code: 2BUVH   Product Code: N7161459
Latest application date: 2026-06-24

FCC ID Device Details

FCC ID2BUVH-N7161459
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2BUVH
Product CodeN7161459
Applicant BusinessTVS Motor Company Limited 🇮🇳
Related Domains tvsmotor.com uc-ts.com
Equipment ClassInstrument Cluster
Test FirmSGS-CSTC Standards Technical Services (Suzhou) Co.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
13.56 MHzOriginal Equipment2026-06-24
2580-2610 MHzOriginal Equipment2026-06-24
2412-2462 MHzOriginal Equipment2026-06-24
5745-5825 MHzOriginal Equipment2026-06-24
2402-2480 MHzOriginal Equipment2026-06-23

Exhibits

DocumentTypeAvailableFile
Label LocationID Label/Location Info2026-06-24PDF 348.2 KB
2211RSU065-U1 FCC Part 22_24_27 GSM_WCDMA Test ReportTest Report2026-06-24PDF 5.4 MB
2211RSU065-U2 FCC LTETest Report2026-06-24PDF 5.4 MB
2211RSU065-U3 FCC Part 90 Test ReportTest Report2026-06-24PDF 3.5 MB
Antenna Data Sheet_MurataTest Report2026-06-24PDF 2.6 MB
Antenna Specification_MurataTest Report2026-06-24PDF 2.6 MB
BLE_Antenna Data Sheet_Melange BLETest Report2026-06-24PDF 861.8 KB
Cellular_Antenna Data SheetTest Report2026-06-24PDF 3 MB
FCC 2.4GWIFI Test ReportTest Report2026-06-24PDF 4 MB
FCC 5GWIFI Test Report_1Test Report2026-06-24PDF 5.1 MB
FCC 5GWIFI Test Report_2Test Report2026-06-24PDF 3.5 MB
FCC Bluetooth BLE Test ReportTest Report2026-06-24PDF 3.2 MB
FCC RF Test ReportTest Report2026-06-24PDF 1.5 MB
FCC_Appendix A.1 GSMTest Report2026-06-24PDF 783.5 KB
FCC_Appendix A.2 WCDMATest Report2026-06-24PDF 784.7 KB
FCC_Appendix A.3 LTETest Report2026-06-24PDF 2.3 MB
Quectel_Antenna_YC0017DA_DatasheetTest Report2026-06-24PDF 3 MB
TERF2211002512E2 P15.247_Module BLE_1Test Report2026-06-24PDF 3.6 MB
TERF2211002512E2 P15.247_Module BLE_2Test Report2026-06-24PDF 3.9 MB
TERF2211002513E2 P15.247_Module WIFI2.4G_1Test Report2026-06-24PDF 5.8 MB
TERF2211002513E2 P15.247_Module WIFI2.4G_2Test Report2026-06-24PDF 3.7 MB
TERF2211002514E2 P15.407_Module WLAN5G_1Test Report2026-06-24PDF 5.4 MB
TERF2211002514E2 P15.407_Module WLAN5G_2Test Report2026-06-24PDF 5.5 MB
TERF2211002514E2 P15.407_Module WLAN5G_3Test Report2026-06-24PDF 5.3 MB
TERF2211002514E2 P15.407_Module WLAN5G_4Test Report2026-06-24PDF 5.6 MB
TERF2211002514E2 P15.407_Module WLAN5G_5Test Report2026-06-24PDF 5.6 MB
TERF2211002514E2 P15.407_Module WLAN5G_6Test Report2026-06-24PDF 5.7 MB
TERF2211002514E2 P15.407_Module WLAN5G_7Test Report2026-06-24PDF 4.5 MB
TERF2211002515E2 P15.407_Module DFSTest Report2026-06-24PDF 2.7 MB
TERF2211002517E2 CO-LOCATION RADIO TEST REPORTTest Report2026-06-24PDF 1.1 MB
TERF2307001775E2 P15.247_Module WIFI2.4G_1Test Report2026-06-24PDF 4.6 MB
TERF2307001775E2 P15.247_Module WIFI2.4G_2Test Report2026-06-24PDF 3.6 MB
Test ReportTest Report2026-06-24PDF 1.5 MB
FCC Bluetooth Test ReportTest Report2026-06-23PDF 2.1 MB
TERF2211002511E2 P15.247_Module BT_1Test Report2026-06-23PDF 5.5 MB
TERF2211002511E2 P15.247_Module BT_2Test Report2026-06-23PDF 4.1 MB
TERF2211002511E2 P15.247_Module BT_3Test Report2026-06-23PDF 4.5 MB
Attestation Statements part 2.911 d 5i and d 5iiAttestation Statements2026-06-24PDF 146.6 KB
US Agent LetterAttestation Statements2026-06-24PDF 80.2 KB
Authority LetterCover Letter(s)2026-06-24PDF 96.3 KB
Confidentiality LetterCover Letter(s)2026-06-24PDF 52.1 KB
Declaration Letter for Function Limited UseCover Letter(s)2026-06-24PDF 159.2 KB
Declaration letter by new applicantCover Letter(s)2026-06-24PDF 51.4 KB
Justification statement for NFC AntennaCover Letter(s)2026-06-24PDF 86.8 KB
Letter authorization from Qucetel module applicantCover Letter(s)2026-06-24PDF 84.3 KB
Letter authorization from murata module applicantCover Letter(s)2026-06-24PDF 291.4 KB
2211RSU065-U4 FCC Exposure ReportRF Exposure Info2026-06-24PDF 406 KB
RF Exposure EvaluationRF Exposure Info2026-06-24PDF 571.1 KB
TESA2307000421ES MPE ReportRF Exposure Info2026-06-24PDF 533 KB
User Manual Metadata onlyUsers Manual2026-12-21PDF 1.8 MB
Internal Photos Metadata onlyInternal Photos2026-12-21PDF 5.1 MB
External Photos Metadata onlyExternal Photos2026-12-21PDF 1.8 MB
Test Setup Photos Metadata onlyTest Setup Photos2026-12-21PDF 1.5 MB
Block Diagram_Melange Module Metadata onlyBlock DiagramPDF 146.9 KB
Block Diagram_Murata Module Metadata onlyBlock DiagramPDF 58.4 KB
Block Diagram_Quectel Cellular module Metadata onlyBlock DiagramPDF 64.6 KB
Block Diagram_Unit Metadata onlyBlock DiagramPDF 160.6 KB
Schematics_Melange Module Metadata onlySchematicsPDF 151.7 KB
Schematics_Murata Module Metadata onlySchematicsPDF 76.9 KB
Schematics_Quectel Cellular module Metadata onlySchematicsPDF 440.4 KB
Schematics_Unit Metadata onlySchematicsPDF 3.4 MB
Operation Description Metadata onlyOperational DescriptionPDF 244.7 KB
Software Security Information Metadata onlySDR Software/Security Info.PDF 239.3 KB
BOM Metadata onlyParts List/Tune Up InfoPDF 207.7 KB
Tune-up Metadata onlyParts List/Tune Up InfoPDF 146 KB

Application Information

Application IDQMlK4jfN/v6ybRy+Flvb7w==
Final Action Date2026-06-24
Application PurposeOriginal Equipment
Applicant FRN0038004404
ModelN7161459
Frequency Range13.56 MHz
Equipment ClassDXX - Part 15 Low Power Communication Device Transmitter
Device DescriptionInstrument Cluster
Responsible PartyKrishnamohan Geddadi, g.krishnamohan@tvsmotor.com , +91-4344276780
Non-Technical ContactDavid Wu, United Consulting Technology Services Co., Ltd., David@uc-ts.com , (626) 217-4022
Test FirmMia Zhou, SGS-CSTC Standards Technical Services (Suzhou) Co., Mia.Zhou@sgs.com , 86-18550061259
TCB Emailcb@industrial-ia.com
TCB ScopeA1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices
Short-Term ConfidentialityYes
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceYes
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
QMlK4jfN/v6ybRy+Flvb7w==2026-06-24Original Equipment
NOvZApuiBAwFu9hTCsSgbg==2026-06-24Original Equipment
1H3f24EV02N8hSdvj/QB0g==2026-06-24Original Equipment
+ns72l2jv225P6iEYabJ0Q==2026-06-24Original Equipment
iWMUwi/in5NxBY7TY6FLhA==2026-06-23Original Equipment

Equipment Authorization

FrequencyOutputToleranceEmissionRulesGrant Notes
13.56 MHz15CCC
824.2-848.8 MHz1.3682.5 PM244KGXW22H
824.2-848.8 MHz0.4522.5 PM247KG7W22H
1850.2-1909.8 MHz1.9362.5 PM245KGXW24E
1850.2-1909.8 MHz0.8612.5 PM246KG7W24E
1852.4-1907.6 MHz0.5382.5 PM4M12F9W24E
1712.4-1752.6 MHz0.562.5 PM4M13F9W27
826.4-846.6 MHz0.2172.5 PM4M13F9W22H
1850.7-1909.3 MHz0.4952.5 PM1M08W7D24E
1855-1905 MHz0.5652.5 PM8M92G7D24E
1860-1900 MHz0.5482.5 PM17M8G7D24E
1860-1900 MHz0.4712.5 PM17M8W7D24E
1710.7-1754.3 MHz0.5862.5 PM1M08G7D27
1715-1750 MHz0.5012.5 PM8M90W7D27
1720-1745 MHz0.562.5 PM17M8G7D27
1720-1745 MHz0.4762.5 PM17M8W7D27
825.5-847.5 MHz0.2212.5 PM2M69G7D22H
829-844 MHz0.2192.5 PM8M92G7D22H
829-844 MHz0.1852.5 PM8M90W7D22H
2507.5-2562.5 MHz0.362.5 PM13M4G7D27
2510-2560 MHz0.3512.5 PM17M8G7D27
2510-2560 MHz0.2992.5 PM17M8W7D27
701.5-713.5 MHz0.2232.5 PM4M47G7D27
701.5-713.5 MHz0.1942.5 PM4M47W7D27
704-711 MHz0.2192.5 PM8M93G7D27
704-711 MHz0.1872.5 PM8M91W7D27
779.5-784.5 MHz0.222.5 PM4M47W7D27
782 MHz0.2582.5 PM8M92G7D27
782 MHz0.2192.5 PM8M89W7D27
1851.5-1913.5 MHz0.5862.5 PM2M68W7D24E
1860-1905 MHz0.7312.5 PM17M8G7D24E
1860-1905 MHz0.5772.5 PM17M8W7D24E
816.5-821.5 MHz0.2122.5 PM4M47G7D90
816.5-821.5 MHz0.1752.5 PM4M47W7D90
819 MHz0.2082.5 PM8M93G7D90
819 MHz0.1742.5 PM8M91W7D90
826.5-846.5 MHz0.2222.5 PM4M47G7D22H
831.5-841.5 MHz0.2192.5 PM13M4G7D22H
831.5-841.5 MHz0.1852.5 PM13M4W7D22H
2575-2615 MHz0.3562.5 PM8M92G7D27
2575-2615 MHz0.2952.5 PM8M91W7D27
2580-2610 MHz0.3522.5 PM17M8G7D27
2580-2610 MHz0.2942.5 PM17M8W7D27
2501-2685 MHz0.3292.5 PM8M92G7D27
2501-2685 MHz0.2722.5 PM8M91W7D27
2506-2680 MHz0.3242.5 PM17M8G7D27
2506-2680 MHz0.2692.5 PM17M8W7D27
1715-1775 MHz0.5892.5 PM8M90W7D27
1717.5-1772.5 MHz0.6862.5 PM13M4G7D27
1720-1770 MHz0.6752.5 PM17M8G7D27
1720-1770 MHz0.572.5 PM17M8W7D27
2402-2480 MHz0.02115CCC
2402-2480 MHz0.01215CCC
2412-2462 MHz0.0115CCC
5180-5240 MHz0.01115ECC
5260-5320 MHz0.01115ECC
5500-5700 MHz0.01115ECC
5745-5825 MHz0.01115ECC

Grants

TCB Grant - Application QMlK4jfN/v6ybRy+Flvb7w==

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

  IIA Lab Services, LLC
13146 NW 86th Drive Suite 400
Alachua, FL 32615
Date of Grant: 06/24/2026

Application Dated: 06/23/2026
TVS Motor Company Limited
P.B. No.4, Harita, Hosur-635109
Tamil Nadu,
India
 
Attention: Krishnamohan Geddadi , Engineering Manager

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:  2BUVH-N7161459
Name of Grantee:  TVS Motor Company Limited
Equipment Class: Part 15 Low Power Communication Device Transmitter
Notes: Instrument Cluster
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15C 13.56  -  13.56  


CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application NOvZApuiBAwFu9hTCsSgbg==

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

  IIA Lab Services, LLC
13146 NW 86th Drive Suite 400
Alachua, FL 32615
Date of Grant: 06/24/2026

Application Dated: 06/24/2026
TVS Motor Company Limited
P.B. No.4, Harita, Hosur-635109
Tamil Nadu,
India
 
Attention: Krishnamohan Geddadi , Engineering Manager

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:  2BUVH-N7161459
Name of Grantee:  TVS Motor Company Limited
Equipment Class: PCS Licensed Transmitter
Notes: Instrument Cluster
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
22H 824.2  -  848.8 1.368 2.5  PM 244KGXW
22H 824.2  -  848.8 0.452 2.5  PM 247KG7W
24E 1850.2  -  1909.8 1.936 2.5  PM 245KGXW
24E 1850.2  -  1909.8 0.861 2.5  PM 246KG7W
24E 1852.4  -  1907.6 0.538 2.5  PM 4M12F9W
27 1712.4  -  1752.6 0.56 2.5  PM 4M13F9W
22H 826.4  -  846.6 0.217 2.5  PM 4M13F9W
24E 1850.7  -  1909.3 0.495 2.5  PM 1M08W7D
24E 1855.0  -  1905.0 0.565 2.5  PM 8M92G7D
24E 1860.0  -  1900.0 0.548 2.5  PM 17M8G7D
24E 1860.0  -  1900.0 0.471 2.5  PM 17M8W7D
27 1710.7  -  1754.3 0.586 2.5  PM 1M08G7D
27 1715.0  -  1750.0 0.501 2.5  PM 8M90W7D
27 1720.0  -  1745.0 0.56 2.5  PM 17M8G7D
27 1720.0  -  1745.0 0.476 2.5  PM 17M8W7D
22H 825.5  -  847.5 0.221 2.5  PM 2M69G7D
22H 829.0  -  844.0 0.219 2.5  PM 8M92G7D
22H 829.0  -  844.0 0.185 2.5  PM 8M90W7D
27 2507.5  -  2562.5 0.36 2.5  PM 13M4G7D
27 2510.0  -  2560.0 0.351 2.5  PM 17M8G7D
27 2510.0  -  2560.0 0.299 2.5  PM 17M8W7D
27 701.5  -  713.5 0.223 2.5  PM 4M47G7D
27 701.5  -  713.5 0.194 2.5  PM 4M47W7D
27 704.0  -  711.0 0.219 2.5  PM 8M93G7D
27 704.0  -  711.0 0.187 2.5  PM 8M91W7D
27 779.5  -  784.5 0.22 2.5  PM 4M47W7D
27 782.0  -  782.0 0.258 2.5  PM 8M92G7D
27 782.0  -  782.0 0.219 2.5  PM 8M89W7D
24E 1851.5  -  1913.5 0.586 2.5  PM 2M68W7D
24E 1860.0  -  1905.0 0.731 2.5  PM 17M8G7D
24E 1860.0  -  1905.0 0.577 2.5  PM 17M8W7D
90 816.5  -  821.5 0.212 2.5  PM 4M47G7D
90 816.5  -  821.5 0.175 2.5  PM 4M47W7D
90 819.0  -  819.0 0.208 2.5  PM 8M93G7D
90 819.0  -  819.0 0.174 2.5  PM 8M91W7D
22H 826.5  -  846.5 0.222 2.5  PM 4M47G7D
22H 831.5  -  841.5 0.219 2.5  PM 13M4G7D
22H 831.5  -  841.5 0.185 2.5  PM 13M4W7D
27 2575.0  -  2615.0 0.356 2.5  PM 8M92G7D
27 2575.0  -  2615.0 0.295 2.5  PM 8M91W7D
27 2580.0  -  2610.0 0.352 2.5  PM 17M8G7D
27 2580.0  -  2610.0 0.294 2.5  PM 17M8W7D
27 2501.0  -  2685.0 0.329 2.5  PM 8M92G7D
27 2501.0  -  2685.0 0.272 2.5  PM 8M91W7D
27 2506.0  -  2680.0 0.324 2.5  PM 17M8G7D
27 2506.0  -  2680.0 0.269 2.5  PM 17M8W7D
27 1715.0  -  1775.0 0.589 2.5  PM 8M90W7D
27 1717.5  -  1772.5 0.686 2.5  PM 13M4G7D
27 1720.0  -  1770.0 0.675 2.5  PM 17M8G7D
27 1720.0  -  1770.0 0.57 2.5  PM 17M8W7D

Output Power is EIRP and ERP for above and below 1 GHz, respectively, except for Part 90 LTE Band 26 emissions, which are conducted. This device must be installed and operated so as to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures, or as evaluated in this filing. End-users must be informed of operating requirements for satisfying RF exposure compliance.

This device supports LTE of 1.4, 3, 5, 10, 15 and 20 MHz bandwidth modes for FDD LTE Bands 2, 4, 25 and 66; LTE of 5, 10, 15 and 20 MHz bandwidth modes for FDD LTE Band 7; LTE of 1.4, 3, 5 and 10 MHz bandwidth modes for FDD LTE Bands 5 and 12; LTE of 5 and 10 MHz bandwidth modes for FDD LTE Band 13; LTE of 1.4, 3, 5, 10 and 15 MHz bandwidth modes for FDD LTE Band 26; and LTE of 5, 10, 15 and 20 MHz bandwidth modes for TDD LTE Bands 38 and 41.


TCB Grant - Application iWMUwi/in5NxBY7TY6FLhA==

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

  IIA Lab Services, LLC
13146 NW 86th Drive Suite 400
Alachua, FL 32615
Date of Grant: 06/23/2026

Application Dated: 06/23/2026
TVS Motor Company Limited
P.B. No.4, Harita, Hosur-635109
Tamil Nadu,
India
 
Attention: Krishnamohan Geddadi , Engineering Manager

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:  2BUVH-N7161459
Name of Grantee:  TVS Motor Company Limited
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: Instrument Cluster
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15C 2402.0  -  2480.0 0.021  

Output Power listed is the maximum conducted output power. This device must be installed and operated so as to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures, or as evaluated in this filing. End-users must be informed of operating requirements for satisfying RF exposure compliance.

CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application 1H3f24EV02N8hSdvj/QB0g==

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

  IIA Lab Services, LLC
13146 NW 86th Drive Suite 400
Alachua, FL 32615
Date of Grant: 06/24/2026

Application Dated: 06/23/2026
TVS Motor Company Limited
P.B. No.4, Harita, Hosur-635109
Tamil Nadu,
India
 
Attention: Krishnamohan Geddadi , Engineering Manager

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:  2BUVH-N7161459
Name of Grantee:  TVS Motor Company Limited
Equipment Class: Digital Transmission System
Notes: Instrument Cluster
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15C 2402.0  -  2480.0 0.012  
CC 15C 2412.0  -  2462.0 0.01  

Output Power listed is the maximum conducted output power. This device must be installed and operated so as to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures, or as evaluated in this filing. End-users must be informed of operating requirements for satisfying RF exposure compliance. This device supports 20 MHz bandwidth modes.

CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application +ns72l2jv225P6iEYabJ0Q==

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

  IIA Lab Services, LLC
13146 NW 86th Drive Suite 400
Alachua, FL 32615
Date of Grant: 06/24/2026

Application Dated: 06/24/2026
TVS Motor Company Limited
P.B. No.4, Harita, Hosur-635109
Tamil Nadu,
India
 
Attention: Krishnamohan Geddadi , Engineering Manager

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:  2BUVH-N7161459
Name of Grantee:  TVS Motor Company Limited
Equipment Class: Unlicensed National Information Infrastructure TX
Notes: Instrument Cluster
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15E 5180.0  -  5240.0 0.011  
CC 15E 5260.0  -  5320.0 0.011  
CC 15E 5500.0  -  5700.0 0.011  
CC 15E 5745.0  -  5825.0 0.011  

Output Power listed is the maximum conducted output power. This device must be installed and operated so as to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures, or as evaluated in this filing. End-users must be informed of operating requirements for satisfying RF exposure compliance. This device supports 20, 40 and 80 MHz bandwidth modes.

CC: This device is certified pursuant to two different Part 15 rules sections.