FCC ID A3LSML335
WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable
by Samsung Electronics Co Ltd
Grantee Code: A3L Product Code: SML335
Latest application date: 2025-05-06
FCC ID Device Details
| FCC ID | A3LSML335 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | A3L |
| Product Code | SML335 |
| Applicant Business | Samsung Electronics Co Ltd 🇺🇸 |
| Related Domains |  samsung.com |
| Equipment Class | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Test Firm | UL Korea, Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 859-894 MHz | Original Equipment | 2025-05-06 |
| 2402-2480 MHz | Original Equipment | 2025-05-06 |
| 2510-2560 MHz | Original Equipment | 2025-05-06 |
| 5845-5885 MHz | Original Equipment | 2025-05-06 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| A3LSML335_UserManual | Users Manual | 2025-11-02 | PDF 1.4 MB |
| A3LSML335_Internal_Photo | Internal Photos | 2025-11-02 | PDF 623.2 KB |
| A3LSML335_External_Photo | External Photos | 2025-11-02 | PDF 191.3 KB |
| A3LSML335_E-Label_and_Location | ID Label/Location Info | 2025-05-06 | PDF 42.3 KB |
| A3LSML335_E-label Attestation_Letter_L335 | ID Label/Location Info | 2025-05-06 | PDF 71.8 KB |
| A3LSML335_Appendix - Test Setup Photo(Licensed Band) | Test Setup Photos | 2025-11-02 | PDF 775.9 KB |
| A3LSML335_Appendix - Test Setup Photo(Unlicensed Band) | Test Setup Photos | 2025-11-02 | PDF 802.1 KB |
| LBE20250124_SM-L335U_Appendix_FCC_Cer | Test Setup Photos | 2025-11-02 | PDF 2.3 MB |
| S-4791706372-S1 FCC Report SAR App A_Photos | Test Setup Photos | 2025-11-02 | PDF 313.9 KB |
| A3LSML335_WIFI_intenna_Product_spec_ENG | Test Report | 2025-05-06 | PDF 691.9 KB |
| LBE20250124_SM-L335U_EMC Test Report_FCC_Cer | Test Report | 2025-05-06 | PDF 1.7 MB |
| S-4791706372-E1V1 FCC Report Part 15B Receiver mode(CXX) | Test Report | 2025-05-06 | PDF 1.4 MB |
| S-4791706372-E2V1_FCC Report WWAN Part 22,90_part1 | Test Report | 2025-05-06 | PDF 5.2 MB |
| S-4791706372-E2V1_FCC Report WWAN Part 22,90_part2 | Test Report | 2025-05-06 | PDF 5.5 MB |
| S-4791706372-E2V1_FCC Report WWAN Part 22,90_part3 | Test Report | 2025-05-06 | PDF 1,011.1 KB |
| S-4791706372-E3V1_FCC Report WWAN Part 24 | Test Report | 2025-05-06 | PDF 5.4 MB |
| S-4791706372-E4V1_FCC Report WWAN Part 27_part1 | Test Report | 2025-05-06 | PDF 5.2 MB |
| S-4791706372-E4V1_FCC Report WWAN Part 27_part2 | Test Report | 2025-05-06 | PDF 5.2 MB |
| S-4791706372-E4V1_FCC Report WWAN Part 27_part3 | Test Report | 2025-05-06 | PDF 5.4 MB |
| S-4791706372-E4V1_FCC Report WWAN Part 27_part4 | Test Report | 2025-05-06 | PDF 1.4 MB |
| S-4791706372-E5V2 FCC Report DTS(b,g,n) WLAN | Test Report | 2025-05-06 | PDF 3.4 MB |
| S-4791706372-E6V2 FCC Report BLE | Test Report | 2025-05-06 | PDF 3.4 MB |
| S-4791706372-E8V2 FCC Report UNII(a,n) WLAN | Test Report | 2025-05-06 | PDF 3.9 MB |
| A3LSML335 FCC 2.911[d][5] Attestation_FRN | Attestation Statements | 2025-05-06 | PDF 395.2 KB |
| A3LSML335 FCC Agent for service Attestation from Applicant_FRN | Attestation Statements | 2025-05-06 | PDF 860.2 KB |
| A3LSML335 Agent Authorization Letter_UL | Cover Letter(s) | 2025-05-06 | PDF 451 KB |
| A3LSML335 Request for confidentiality letter | Cover Letter(s) | 2025-05-06 | PDF 1.3 MB |
| A3LSML335_Technical description of WCDMA MPR_L335 | Cover Letter(s) | 2025-05-06 | PDF 298.4 KB |
| S-4791706372-S1 FCC Report SAR APP E_Probe Certi | RF Exposure Info | 2025-05-06 | PDF 2.1 MB |
| S-4791706372-S1 FCC Report SAR App B_Test Plots | RF Exposure Info | 2025-05-06 | PDF 658.7 KB |
| S-4791706372-S1 FCC Report SAR App C_System Plots | RF Exposure Info | 2025-05-06 | PDF 189.6 KB |
| S-4791706372-S1 FCC Report SAR App D_SAR Tissue | RF Exposure Info | 2025-05-06 | PDF 799.1 KB |
| S-4791706372-S1 FCC Report SAR App F_Dipole Certi_part1 | RF Exposure Info | 2025-05-06 | PDF 5.3 MB |
| S-4791706372-S1 FCC Report SAR App F_Dipole Certi_part2 | RF Exposure Info | 2025-05-06 | PDF 5.2 MB |
| S-4791706372-S1 FCC Report SAR App F_Dipole Certi_part3 | RF Exposure Info | 2025-05-06 | PDF 806 KB |
| S-4791706372-S1-1V2 FCC SAR_Report | RF Exposure Info | 2025-05-06 | PDF 1.2 MB |
| A3LSML335_Block_Diagram_SM-L335U Metadata only | Block Diagram | PDF 669.4 KB | |
| A3LSML335_Schematic Metadata only | Schematics | PDF 605.8 KB | |
| A3LSML335 CH_1213 Verification Metadata only | Operational Description | PDF 356.3 KB | |
| A3LSML335_Antenna distance Metadata only | Operational Description | PDF 291.9 KB | |
| A3LSML335_Antenna_Specifiacation(LTE,WCDMA)_SM-L335U Metadata only | Operational Description | PDF 454.8 KB | |
| A3LSML335_LTE Release 10 Checklist rev D_L335 Metadata only | Operational Description | PDF 132.6 KB | |
| A3LSML335_LTE checklist Metadata only | Operational Description | PDF 45.8 KB | |
| A3LSML335_Operational_Description Metadata only | Operational Description | PDF 1.7 MB | |
| A3LSML335_Simultaneous Scenario Metadata only | Operational Description | PDF 31 KB | |
| PRODUCT EQUALITY DECLARATION_SM-L335F Metadata only | Operational Description | PDF 81.5 KB | |
| A3LSML335_U-NII Device SW Security Statement Metadata only | SDR Software/Security Info. | PDF 250.1 KB | |
| A3LSML335_7a. Tune-up procedure_L335 Metadata only | Parts List/Tune Up Info | PDF 58.7 KB | |
| A3LSML335_Part list Metadata only | Parts List/Tune Up Info | PDF 49 KB | |
| A3LSML335_WIIFI_BT_BLE Part15 Tune-up_L335 Metadata only | Parts List/Tune Up Info | PDF 78.6 KB |
Application Information
| Application ID | rbzAp8LvXWBJ/Q+LOVj/mg== |
|---|---|
| Final Action Date | 2025-05-06 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0027908797 |
| Model | SML335 |
| Frequency Range | 859-894 MHz |
| Equipment Class | CXX - Communications Rcvr for use w/ licensed Tx and CBs |
| Device Description | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Responsible Party | Jenni Chun, General Manager, j1.chun@samsung.com , 973-808-6375 |
| Test Firm | Junwhan Lee, UL Korea, Ltd., Junwhan.Lee@ul.com  , 82313379902 |
| TCB Email | LST.FRE.CertNotice@ul.com |
| TCB Scope | A1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices |
| Short-Term Confidentiality | Yes |
| Short-Term Confidentiality Date | 11/02/2025 |
| Long-Term Confidentiality | Yes |
| Grant Deferral | No |
| Modular Equipment | Does not apply |
| Composite Device | Yes |
| Composite Part | No |
| Cognitive Radio | No |
| Authorization Waiver | No |
| Authorization Waiver Approved | No |
| Section 5301 Certification | Yes |
| Related OET Knowledge DataBase Inquiry | No |
Applications
| Application ID | Date | Purpose |
|---|---|---|
| rbzAp8LvXWBJ/Q+LOVj/mg== | 2025-05-06 | Original Equipment |
| iD5pIx5/8ljNliwnSNRwsQ== | 2025-05-06 | Original Equipment |
| TL7qG9qbNaVhVyPrC7UvoA== | 2025-05-06 | Original Equipment |
| 9XkYcqsYerp9mVPC7d0SfQ== | 2025-05-06 | Original Equipment |
| 8tsUZM89dEuy+ignbcBAkQ== | 2025-05-06 | Original Equipment |
Equipment Authorization
| Frequency | Output | Tolerance | Grant Notes |
|---|---|---|---|
| 617-652 MHz | CC | ||
| 665.5-695.5 MHz | 0.006 | 2.5ppm | |
| 665.5-695.5 MHz | 0.005 | 2.5ppm | |
| 673-688 MHz | 0.006 | 2.5ppm | |
| 673-688 MHz | 0.004 | 2.5ppm | |
| 700.5-714.5 MHz | 0.008 | 2.5ppm | |
| 701.5-713.5 MHz | 0.005 | 2.5ppm | |
| 704-711 MHz | 0.007 | 2.5ppm | |
| 704-711 MHz | 0.005 | 2.5ppm | |
| 729-756 MHz | CC | ||
| 758-768 MHz | CC | ||
| 779.5-784.5 MHz | 0.023 | 2.5ppm | |
| 782 MHz | 0.022 | 2.5ppm | |
| 782 MHz | 0.017 | 2.5ppm | |
| 821.5-824 MHz | 0.21 | 2.5ppm | |
| 821.5-824 MHz | 0.179 | 2.5ppm | |
| 824-841.5 MHz | 0.027 | 2.5ppm | |
| 824-841.5 MHz | 0.021 | 2.5ppm | |
| 824-847.5 MHz | 0.028 | 2.5ppm | |
| 824-847.5 MHz | 0.022 | 2.5ppm | |
| 859-894 MHz | CC | ||
| 1712.4-1752.6 MHz | 0.021 | 2.5ppm | |
| 1715-1775 MHz | 0.023 | 2.5ppm | |
| 1717.5-1772.5 MHz | 0.029 | 2.5ppm | |
| 1720-1770 MHz | 0.026 | 2.5ppm | |
| 1720-1770 MHz | 0.022 | 2.5ppm | |
| 1851.5-1913.5 MHz | 0.032 | 2.5ppm | |
| 1851.5-1913.5 MHz | 0.026 | 2.5ppm | |
| 1852.4-1907.6 MHz | 0.019 | 2.5ppm | |
| 1860-1905 MHz | 0.027 | 2.5ppm | |
| 1860-1905 MHz | 0.02 | 2.5ppm | |
| 2402-2480 MHz | 0.008 | CC | |
| 2412-2472 MHz | 0.198 | CC | |
| 2502.5-2567.5 MHz | 0.008 | 2.5ppm | |
| 2502.5-2567.5 MHz | 0.007 | 2.5ppm | |
| 2510-2560 MHz | 0.008 | 2.5ppm | |
| 2510-2560 MHz | 0.006 | 2.5ppm | |
| 5180-5240 MHz | 0.042 | CC | |
| 5260-5320 MHz | 0.042 | CC | |
| 5500-5720 MHz | 0.043 | CC | |
| 5745-5825 MHz | 0.043 | CC | |
| 5845-5885 MHz | 0.004 | CC |
Grants
TCB Grant - Application TL7qG9qbNaVhVyPrC7UvoA==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 |
Date of Grant: 05/06/2025 Application Dated: 05/06/2025 |
| Samsung Electronics Co Ltd |
| 19 Chapin Rd., Building D |
| Pine Brook, NJ 07058 |
| Attention: Jenni Chun , General 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: | A3LSML335 |
| Name of Grantee: | Samsung Electronics Co Ltd |
| Equipment Class: | Part 15 Class B Digital Device |
| Notes: | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 15B | - |
TCB Grant - Application rbzAp8LvXWBJ/Q+LOVj/mg==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 |
Date of Grant: 05/06/2025 Application Dated: 05/06/2025 |
| Samsung Electronics Co Ltd |
| 19 Chapin Rd., Building D |
| Pine Brook, NJ 07058 |
| Attention: Jenni Chun , General 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: | A3LSML335 |
| Name of Grantee: | Samsung Electronics Co Ltd |
| Equipment Class: | Communications Rcvr for use w/ licensed Tx and CBs |
| Notes: | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15B | 617.0 - 652.0 | |||
| CC | 15B | 729.0 - 756.0 | |||
| CC | 15B | 758.0 - 768.0 | |||
| CC | 15B | 859.0 - 894.0 |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
TCB Grant - Application iD5pIx5/8ljNliwnSNRwsQ==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 |
Date of Grant: 05/06/2025 Application Dated: 05/06/2025 |
| Samsung Electronics Co Ltd |
| 19 Chapin Rd., Building D |
| Pine Brook, NJ 07058 |
| Attention: Jenni Chun , General 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: | A3LSML335 |
| Name of Grantee: | Samsung Electronics Co Ltd |
| Equipment Class: | Digital Transmission System |
| Notes: | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15C | 2402.0 - 2480.0 | 0.008 | ||
| CC | 15C | 2412.0 - 2472.0 | 0.198 |
| Power output listed is conducted. This device supports bandwidths of 20MHz for WLAN. The highest reported SAR values for head (next to mouth), simultaneous transmission, extremity (wrist) (10g) and extremity simultaneous transmission exposure (10g) conditions in this filing are 0.11 W/Kg, 0.37 W/Kg, 0.22 W/Kg (10g) and 0.78 W/Kg (10g) respectively. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
TCB Grant - Application 9XkYcqsYerp9mVPC7d0SfQ==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 |
Date of Grant: 05/06/2025 Application Dated: 05/06/2025 |
| Samsung Electronics Co Ltd |
| 19 Chapin Rd., Building D |
| Pine Brook, NJ 07058 |
| Attention: Jenni Chun , General 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: | A3LSML335 |
| Name of Grantee: | Samsung Electronics Co Ltd |
| Equipment Class: | PCS Licensed Transmitter worn on body |
| Notes: | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| 22H | 826.4 - 846.6 | 0.029 | 2.5 PM | 4M17F9W | |
| 90 | 793.0 - 793.0 | 0.021 | 2.5 PM | 8M97G7W | |
| 90 | 793.0 - 793.0 | 0.016 | 2.5 PM | 8M95D7W | |
| 90 | 821.5 - 824.0 | 0.21 | 2.5 PM | 13M4G7W | |
| 90 | 821.5 - 824.0 | 0.179 | 2.5 PM | 13M4D7W | |
| 22H | 824.0 - 841.5 | 0.027 | 2.5 PM | 13M4G7W | |
| 22H | 824.0 - 841.5 | 0.021 | 2.5 PM | 13M5D7W | |
| 22H | 824.0 - 847.5 | 0.028 | 2.5 PM | 2M69G7W | |
| 22H | 824.0 - 847.5 | 0.022 | 2.5 PM | 2M70D7W | |
| 24E | 1852.4 - 1907.6 | 0.019 | 2.5 PM | 4M17F9W | |
| 24E | 1860.0 - 1905.0 | 0.027 | 2.5 PM | 17M8G7W | |
| 24E | 1860.0 - 1905.0 | 0.02 | 2.5 PM | 17M8D7W | |
| 24E | 1851.5 - 1913.5 | 0.032 | 2.5 PM | 2M70G7W | |
| 24E | 1851.5 - 1913.5 | 0.026 | 2.5 PM | 2M70D7W | |
| 27 | 1712.4 - 1752.6 | 0.021 | 2.5 PM | 4M17F9W | |
| 27 | 2510.0 - 2560.0 | 0.008 | 2.5 PM | 17M9G7W | |
| 27 | 2510.0 - 2560.0 | 0.006 | 2.5 PM | 17M9D7W | |
| 27 | 2502.5 - 2567.5 | 0.008 | 2.5 PM | 4M50G7W | |
| 27 | 2502.5 - 2567.5 | 0.007 | 2.5 PM | 4M49D7W | |
| 27 | 704.0 - 711.0 | 0.007 | 2.5 PM | 8M98G7W | |
| 27 | 704.0 - 711.0 | 0.005 | 2.5 PM | 9M00D7W | |
| 27 | 700.5 - 714.5 | 0.008 | 2.5 PM | 2M69G7W | |
| 27 | 701.5 - 713.5 | 0.005 | 2.5 PM | 4M51D7W | |
| 27 | 782.0 - 782.0 | 0.022 | 2.5 PM | 8M97G7W | |
| 27 | 782.0 - 782.0 | 0.017 | 2.5 PM | 8M98D7W | |
| 27 | 779.5 - 784.5 | 0.023 | 2.5 PM | 4M50G7W | |
| 27 | 1720.0 - 1770.0 | 0.026 | 2.5 PM | 17M9G7W | |
| 27 | 1720.0 - 1770.0 | 0.022 | 2.5 PM | 17M9D7W | |
| 27 | 1717.5 - 1772.5 | 0.029 | 2.5 PM | 13M4G7W | |
| 27 | 1715.0 - 1775.0 | 0.023 | 2.5 PM | 8M97D7W | |
| 27 | 673.0 - 688.0 | 0.006 | 2.5 PM | 17M8G7W | |
| 27 | 673.0 - 688.0 | 0.004 | 2.5 PM | 17M9D7W | |
| 27 | 665.5 - 695.5 | 0.006 | 2.5 PM | 4M49G7W | |
| 27 | 665.5 - 695.5 | 0.005 | 2.5 PM | 4M48D7W |
| Output power is erp for operations below 1GHz, eirp for operations above 1GHz, and Band 26 Part 90 power is maximum conducted power. This device supports LTE bandwidths of 1.4/ 3/ 5/ 10/ 15/ 20 MHz in Band 2, Band 4, Band 25 and Band 66; 1.4/ 3/ 5/ 10 MHz in Band 5 and Band 12; 5/ 10/ 15/ 20 MHz in Band 7 and Band 71; 1.4/ 3/ 5/ 10/ 15 MHz in Band 26; 5/ 10 in Band 13 and Band 14. The highest reported SAR values for head (next to mouth), simultaneous transmission, extremity (wrist) (10g) and extremity simultaneous transmission exposure (10g) conditions in this filing are 0.26 W/Kg, 0.48 W/Kg, 0.56 W/Kg (10g) and 1.17 W/Kg (10g) respectively. This device also contains functions that are not operational in U.S. Territories. This filing is only applicable for US operations. |
TCB Grant - Application 8tsUZM89dEuy+ignbcBAkQ==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
UL Verification Services Inc. 47173 Benicia Street Fremont, CA 94538 |
Date of Grant: 05/06/2025 Application Dated: 05/06/2025 |
| Samsung Electronics Co Ltd |
| 19 Chapin Rd., Building D |
| Pine Brook, NJ 07058 |
| Attention: Jenni Chun , General 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: | A3LSML335 |
| Name of Grantee: | Samsung Electronics Co Ltd |
| Equipment Class: | Unlicensed National Information Infrastructure TX |
| Notes: | WCDMA,LTE,BT,BLE,DTS,UNII a,b,g,n Smart Wearable |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15E | 5180.0 - 5240.0 | 0.042 | ||
| CC | 15E | 5260.0 - 5320.0 | 0.042 | ||
| CC | 15E | 5500.0 - 5720.0 | 0.043 | ||
| CC | 15E | 5745.0 - 5825.0 | 0.043 | ||
| CC | 15E | 5845.0 - 5885.0 | 0.004 |
| Output power listed is conducted power except for the band 5845 -5885 MHz which is the EIRP. This device supports bandwidths of 20MHz for WLAN. The highest reported SAR values for head (next to mouth), simultaneous transmission, extremity (wrist) (10g) and extremity simultaneous transmission exposure (10g) conditions in this filing are <0.10 W/Kg, 0.48 W/Kg, 0.23 W/Kg (10g) and 1.17 W/Kg (10g) respectively. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |