FCC ID WR4-SRS1
Sokkia SR-S1 Handheld Mapping System
by Topcon Positioning Systems, Inc.
Grantee Code: WR4 Product Code: SRS1
Latest application date: 2026-06-02
FCC ID Device Details
| FCC ID | WR4-SRS1 |
|---|---|
| Mirrors | fcc.id | gov | fccid.ai |
| Grantee Code | WR4 |
| Product Code | SRS1 |
| Applicant Business | Topcon Positioning Systems, Inc. 🇺🇸 |
| Related Domains |  topcon.com |
| Equipment Class | Sokkia SR-S1 Handheld Mapping System |
| Test Firm | Guangdong Zhonghan Testing Technology Co., Ltd. |
Operating Frequencies
| Frequency Range | Application Purpose | Final Action Date |
|---|---|---|
| 5745-5825 MHz | Change in identification of presently authorized equipment. Original FCC ID: WR4-CRS1 Grant Date: 05/26/2026 | 2026-06-02 |
| 2412-2462 MHz | Change in identification of presently authorized equipment. Original FCC ID: WR4-CRS1 Grant Date: 05/26/2026 | 2026-06-02 |
Exhibits
| Document | Type | Available | File |
|---|---|---|---|
| User manual | Users Manual | 2026-06-02 | PDF 1.3 MB |
| External photos | External Photos | 2026-06-02 | PDF 1.7 MB |
| ID label and location | ID Label/Location Info | 2026-06-02 | PDF 178.9 KB |
| Attestation_Statement | Attestation Statements | 2026-06-02 | PDF 119.1 KB |
| Kaspersky Statement | Attestation Statements | 2026-06-02 | PDF 275.6 KB |
| TCB_validation_US_agent_process | Attestation Statements | 2026-06-02 | PDF 1 MB |
| Us_Agent | Attestation Statements | 2026-06-02 | PDF 62.3 KB |
| Authorization Letter from original Grantee | Cover Letter(s) | 2026-06-02 | PDF 233 KB |
| Change ID Request | Cover Letter(s) | 2026-06-02 | PDF 543.8 KB |
| Confidentiality | Cover Letter(s) | 2026-06-02 | PDF 541.8 KB |
| Letter Authorization | Cover Letter(s) | 2026-06-02 | PDF 59.2 KB |
| Software Configuration | Cover Letter(s) | 2026-06-02 | PDF 57 KB |
| Software Security Metadata only | SDR Software/Security Info. | PDF 73 KB |
Application Information
| Application ID | eDmXl193PD+EuhzzxtMYaw== |
|---|---|
| Final Action Date | 2026-06-02 |
| Application Purpose | Change in identification of presently authorized equipment. Original FCC ID: WR4-CRS1 Grant Date: 05/26/2026 |
| Applicant FRN | 0008852949 |
| Model | SRS1 |
| Frequency Range | 5745-5825 MHz |
| Equipment Class | NII - Unlicensed National Information Infrastructure TX |
| Device Description | Sokkia SR-S1 Handheld Mapping System |
| Responsible Party | Ferdinand Riodique, friodique@topcon.com , 925-245-8300 |
| Technical Contact | Alex Wang, Guangdong Zhonghan Testing Technology Co., Ltd., alex_wang_zht@163.com  |
| Non-Technical Contact | Ferdinand Riodique, Topcon Positioning Systems, Inc., friodique@topcon.com , 925-245-8300 |
| Test Firm | Alex Wang, Guangdong Zhonghan Testing Technology Co., Ltd., alex_wang_zht@163.com , 86-18307618653 |
| TCB Email | elabscert@applus.com  |
| TCB Scope | A4: UNII devices & low power transmitters using spread spectrum techniques |
| Short-Term Confidentiality | No |
| Long-Term Confidentiality | Yes |
| Modular Equipment | Does not apply |
| 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 |
|---|---|---|
| eDmXl193PD+EuhzzxtMYaw== | 2026-06-02 | Change in identification of presently authorized equipment. Original FCC ID: WR4-CRS1 Grant Date: 05/26/2026 |
| PwwMsWbNoSYd19/+b15pAg== | 2026-06-02 | Change in identification of presently authorized equipment. Original FCC ID: WR4-CRS1 Grant Date: 05/26/2026 |
Equipment Authorization
Grants
TCB Grant - Application PwwMsWbNoSYd19/+b15pAg==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
LGAI Technological Center S.A. (APPLUS) Ronda de la Font del Carme, s/n <BR>P.O. Box 08193, Barcelona, Spain |
Date of Grant: 06/02/2026 Application Dated: 06/01/2026 |
| Topcon Positioning Systems, Inc. |
| 7400 National Drive |
| Livermore, CA 94551 |
| Attention: Ferdinand Riodique , |
| 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: | WR4-SRS1 |
| Name of Grantee: | Topcon Positioning Systems, Inc. |
| Equipment Class: | Digital Transmission System |
| Notes: | Sokkia SR-S1 Handheld Mapping System |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15C | 2412.0 - 2462.0 | 0.0053 |
| Output power listed is conducted. This device contains 20 and 40 MHz signal bandwidth |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
TCB Grant - Application eDmXl193PD+EuhzzxtMYaw==
| TCB | GRANT OF EQUIPMENT AUTHORIZATION |
TCB |
| Certification | ||
| Issued Under the Authority of the | ||
| Federal Communications Commission | ||
| By: |
|
LGAI Technological Center S.A. (APPLUS) Ronda de la Font del Carme, s/n <BR>P.O. Box 08193, Barcelona, Spain |
Date of Grant: 06/02/2026 Application Dated: 06/01/2026 |
| Topcon Positioning Systems, Inc. |
| 7400 National Drive |
| Livermore, CA 94551 |
| Attention: Ferdinand Riodique , |
| 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: | WR4-SRS1 |
| Name of Grantee: | Topcon Positioning Systems, Inc. |
| Equipment Class: | Unlicensed National Information Infrastructure TX |
| Notes: | Sokkia SR-S1 Handheld Mapping System |
| Grant Notes | FCC Rule Parts | Frequency Range (MHZ) | Output Watts | Frequency Tolerance | Emission Designator |
| CC | 15E | 5180.0 - 5240.0 | 0.0061 | ||
| CC ND | 15E | 5260.0 - 5320.0 | 0.0055 | ||
| CC ND | 15E | 5500.0 - 5700.0 | 0.0057 | ||
| CC | 15E | 5745.0 - 5825.0 | 0.0053 |
| Output power listed is conducted. This device complies with the Dynamic Frequency Selection (DFS) requirements of KDB 905462 D03 as a Client only without Radar Detection.The device contains 20MHz, 40MHz and 80MHz. |
| CC: | This device is certified pursuant to two different Part 15 rules sections. |
| ND: | This UNII device complies with the Transmit Power Control (TPC) and Dynamic Frequency Selection (DFS) requirements in Section 15.407(h). |