FCC ID RYK-WUBT281AX
802.11ax ac a b g n 2T2R WiFi USB Module
by SparkLAN Communications, Inc.
Grantee Code: RYK Product Code: WUBT281AX
Latest application date: 2026-08-12
FCC ID Device Details
| FCC ID | RYK-WUBT281AX |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | RYK |
| Product Code | WUBT281AX |
| Applicant Business | SparkLAN Communications, Inc. 🇹🇼 |
| Related Domains |  sparklan.com  icertifi.com |
| Equipment Class | 802.11ax ac a b g n 2T2R WiFi USB Module |
| Test Firm | Underwriters Laboratories Taiwan Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 2412-2462 MHz | Original Equipment | 2026-08-12 |
| 5745-5825 MHz | Original Equipment | 2026-08-12 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| 03_User manual | Users Manual | 2026-08-12 | PDF 755.7 KB |
| 11_Internal Photo | Internal Photos | 2026-08-12 | PDF 4 MB |
| 10_External Photo | External Photos | 2026-08-12 | PDF 4.1 MB |
| 02_Label and location | ID Label/Location Info | 2026-08-12 | PDF 2.7 MB |
| 08_Setup photos | Test Setup Photos | 2026-08-12 | PDF 2.1 MB |
| 09_Test report _DFS Slave_RYK-WUBT281AX | Test Report | 2026-08-12 | PDF 912.1 KB |
| 09_Test report_2.4G WiFi_RYK-WUBT281AX_01 | Test Report | 2026-08-12 | PDF 5.4 MB |
| 09_Test report_2.4G WiFi_RYK-WUBT281AX_02 | Test Report | 2026-08-12 | PDF 5.4 MB |
| 09_Test report_2.4G WiFi_RYK-WUBT281AX_03 | Test Report | 2026-08-12 | PDF 5.4 MB |
| 09_Test report_2.4G WiFi_RYK-WUBT281AX_04 | Test Report | 2026-08-12 | PDF 5.4 MB |
| 09_Test report_2.4G WiFi_RYK-WUBT281AX_05 | Test Report | 2026-08-12 | PDF 3 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_01 | Test Report | 2026-08-12 | PDF 5.5 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_02 | Test Report | 2026-08-12 | PDF 5.3 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_03 | Test Report | 2026-08-12 | PDF 5.4 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_04 | Test Report | 2026-08-12 | PDF 5.5 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_05 | Test Report | 2026-08-12 | PDF 5.3 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_06 | Test Report | 2026-08-12 | PDF 5.5 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_07 | Test Report | 2026-08-12 | PDF 5.3 MB |
| 09_Test report_5G WiFi_RYK-WUBT281AX_08 | Test Report | 2026-08-12 | PDF 3.6 MB |
| 09_Test report_Co-location_RYK-WUBT281AX | Test Report | 2026-08-12 | PDF 1.6 MB |
| 17_Antenna Spe_SparkLAN AD-302N | Test Report | 2026-08-12 | PDF 3.3 MB |
| 17_Antenna Spe_SparkLAN AD-303N | Test Report | 2026-08-12 | PDF 2.7 MB |
| 17_Antenna Spe_SparkLAN AD-305N | Test Report | 2026-08-12 | PDF 2.7 MB |
| 17_Antenna Spe_SparkLAN AD-315N | Test Report | 2026-08-12 | PDF 1.5 MB |
| 17_Antenna Spe_SparkLAN_R3410110203_AD-103AG | Test Report | 2026-08-12 | PDF 2 MB |
| 17_Antenna Spe_WUBT-281AX (RTL8832BU) Printed Antenna | Test Report | 2026-08-12 | PDF 1.5 MB |
| 16_FCC Agent for service Attestation_RYK-WUBT281AX | Attestation Statements | 2026-08-12 | PDF 166.1 KB |
| 18_FCC 2.911[d][5] Attestation_RYK-WUBT281AX | Attestation Statements | 2026-08-12 | PDF 31.5 KB |
| 19_FCC Agent for service Attestation from Applicant_RYK-WUBT281AX | Attestation Statements | 2026-08-12 | PDF 31.8 KB |
| 01_Authorization Letter_RYK-WUBT281AX | Cover Letter(s) | 2026-08-12 | PDF 74.1 KB |
| 07_FCC Request for confidentiality letter_RYK-WUBT281AX | Cover Letter(s) | 2026-08-12 | PDF 32.4 KB |
| 13_Modular Approval Checklist_RYK-WUBT281AX | Cover Letter(s) | 2026-08-12 | PDF 97.4 KB |
| 15_DTS UNII Declaration_RYK-WUBT281AX | Cover Letter(s) | 2026-08-12 | PDF 54.4 KB |
| 12_MPE report_RYK-WUBT281AX | RF Exposure Info | 2026-08-12 | PDF 521.3 KB |
| 04_Block Diagram Metadata only | Block Diagram | PDF 84.7 KB | |
| 05_Schematics Metadata only | Schematics | PDF 202.8 KB | |
| 06_Operational Description Metadata only | Operational Description | PDF 301.6 KB | |
| 5G Software Security_RYK-WUBT281AX Metadata only | Operational Description | PDF 225.4 KB |
Application Information
| Application ID | wXLn5QbVobscD+UlbZvrbA== |
|---|---|
| Final Action Date | 2026-08-12 |
| Application Purpose | Original Equipment |
| Applicant FRN | 0010534840 |
| Model | WUBT281AX |
| Frequency Range | 2412-2462 MHz |
| Equipment Class | DTS - Digital Transmission System |
| Device Description | 802.11ax ac a b g n 2T2R WiFi USB Module |
| Responsible Party | Hungjen Chang, hungjen.chang@sparklan.com , +886-2-2659-1880 |
| Non-Technical Contact | Paul Preston, Americas Compliance Consulting LLC, dba Icertifi, fccagent@icertifi.com , +1 (866) 885-4575 |
| Test Firm | Roy Chen, Underwriters Laboratories Taiwan Co., Ltd., Roy.Chen@ul.com  , 886-2-7737-3000 |
| TCB Email | LST.FRE.CertNotice@ul.com |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | No |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Single Modular Approval |
| Composite Device | Yes |
| 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 |
|---|---|---|
| wXLn5QbVobscD+UlbZvrbA== | 2026-08-12 | Original Equipment |
| bZQkTHWZCxFG9a/Q5XtlvQ== | 2026-08-12 | Original Equipment |
Equipment Authorization
Grants
TCB Grant - Application wXLn5QbVobscD+UlbZvrbA==
| 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: 08/12/2026 Application Dated: 08/12/2026 |
| SparkLAN Communications, Inc. |
| 5F., No.199, Ruihu St., Neihu District, |
| Taipei, Taiwan |
| Attention: Hungjen Chang , Executive Technology Assistant |
| 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: | RYK-WUBT281AX |
| Name of Grantee: | SparkLAN Communications, Inc. |
| Equipment Class: | Digital Transmission System |
| Notes: | 802.11ax ac a b g n 2T2R WiFi USB Module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC MO | 15C | 2412.0 - 2462.0 | 0.995 |
| Single Modular Approval. Power listed is conducted. The module grantee is responsible for providing the documentation to the system integrator on restrictions of use, for continuing compliance of the module. This device has 20 MHz and 40 MHz bandwidth modes. This module can only be used with the antenna design in strict compliance with the OEM instructions provided. The module antenna(s) must be installed to meet the RF exposure compliance separation distance of 36 cm and any additional testing and authorization process as required. The host integrator must follow the integration instructions provided by the module manufacturer. Co-location of this module with other transmitters that operate simultaneously are required to be evaluated using the FCC multi-transmitter procedures. The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance in KDB 996369. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
| MO: | This Multiple Input Multiple Output (MIMO) device was evaluated for multiple transmitted signals as indicated in the filing. |
TCB Grant - Application bZQkTHWZCxFG9a/Q5XtlvQ==
| 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: 08/12/2026 Application Dated: 08/12/2026 |
| SparkLAN Communications, Inc. |
| 5F., No.199, Ruihu St., Neihu District, |
| Taipei, Taiwan |
| Attention: Hungjen Chang , Executive Technology Assistant |
| 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: | RYK-WUBT281AX |
| Name of Grantee: | SparkLAN Communications, Inc. |
| Equipment Class: | Unlicensed National Information Infrastructure TX |
| Notes: | 802.11ax ac a b g n 2T2R WiFi USB Module |
| Modular Type: | Single Modular |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC MO | 15E | 5180.0 - 5240.0 | 0.047 | ||
| CC MO | 15E | 5260.0 - 5320.0 | 0.048 | ||
| CC MO | 15E | 5500.0 - 5720.0 | 0.121 | ||
| CC MO | 15E | 5745.0 - 5825.0 | 0.329 |
| Single Modular Approval. Power listed is conducted. The module grantee is responsible for providing the documentation to the system integrator on restrictions of use, for continuing compliance of the module. This device has 20 MHz, 40 MHz, and 80 MHz bandwidth modes. This module can only be used with the antenna design in strict compliance with the OEM instructions provided. The module antenna(s) must be installed to meet the RF exposure compliance separation distance of 36 cm and any additional testing and authorization process as required. The host integrator must follow the integration instructions provided by the module manufacturer. Co-location of this module with other transmitters that operate simultaneously are required to be evaluated using the FCC multi-transmitter procedures. The host integrator installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operation and should refer to guidance in KDB 996369. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
| MO: | This Multiple Input Multiple Output (MIMO) device was evaluated for multiple transmitted signals as indicated in the filing. |