FCC ID 2AJYB-ST1955

Network Audio Streaming Module

by StreamUnlimited Engineering GmbH

Grantee Code: 2AJYB   Product Code: ST1955
Latest application date: 2026-10-15

FCC ID Device Details

FCC ID2AJYB-ST1955
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2AJYB
Product CodeST1955
Applicant BusinessStreamUnlimited Engineering GmbH 🇦🇹
Related Domains streamunlimited.com tahifi-na.com
Equipment ClassNetwork Audio Streaming Module
Test FirmCerpass Technology Corporation Test Laboratory

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
5745-5825 MHzClass II permissive change or modification of presently authorized equipment2026-10-15
2412-2462 MHzClass II permissive change or modification of presently authorized equipment2026-10-15
5180-5240 MHzOriginal Equipment2021-08-19
2402-2480 MHzOriginal Equipment2021-08-19
2402-2480 MHzOriginal Equipment2021-08-19

Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2021-08-19PDF 415.6 KB
Internal PhotosInternal Photos2021-08-19PDF 187.8 KB
External PhotosExternal Photos2021-08-19PDF 1.5 MB
Label and Location Info Metadata onlyID Label/Location Info2026-10-15PDF 115.5 KB
Label and Location Info 0923ID Label/Location Info2026-10-15PDF 145.2 KB
Label and Placement InformationID Label/Location Info2021-08-19PDF 151.7 KB
Test Setup PhotosTest Setup Photos2021-08-19PDF 1.2 MB
Antenna SpecifcationTest Report2026-10-15PDF 1.8 MB
Antenna SpecificationTest Report2026-10-15PDF 1.8 MB
MPE Test ReportRF Exposure Info2026-10-15PDF 478 KB
TR WiFi 5G Appendix ATest Report2026-10-15PDF 471.6 KB
TR WiFi 5G Appendix BTest Report2026-10-15PDF 426.5 KB
TR WiFi 5G Appendix C-1Test Report2026-10-15PDF 4.7 MB
TR WiFi 5G Appendix C-2Test Report2026-10-15PDF 5 MB
TR WiFi 5G Appendix C-3Test Report2026-10-15PDF 5.7 MB
TR WiFi 5G Appendix C-4Test Report2026-10-15PDF 5.7 MB
TR WiFi 5G Appendix C-5Test Report2026-10-15PDF 5.7 MB
TR WiFi 5G Appendix C-6Test Report2026-10-15PDF 5.6 MB
TR WiFi 5G Appendix C-7Test Report2026-10-15PDF 5.3 MB
TR WiFi 5G Appendix DTest Report2026-10-15PDF 543 KB
TR WiFi 5G Appendix ETest Report2026-10-15PDF 1.2 MB
Test Report WiFi 2.4G-1Test Report2026-10-15PDF 3.1 MB
Test Report WiFi 2.4G-2Test Report2026-10-15PDF 3.8 MB
Test Report WiFi 5GTest Report2026-10-15PDF 634.3 KB
Test reportTest Report2021-08-19PDF 3.7 MB
Test reportTest Report2021-08-19PDF 3.1 MB
Test report part 1Test Report2021-08-19PDF 5.1 MB
Test report part 2Test Report2021-08-19PDF 1.3 MB
Test report part 3Test Report2021-08-19PDF 5.5 MB
Attestation Statement part 2.911(d)(7)Attestation Statements2026-10-15PDF 371 KB
Attstn Stmts parts 2.911(d)(5)(i)&(ii)Attestation Statements2026-10-15PDF 210.6 KB
Agent Authorization LetterCover Letter(s)2026-10-15PDF 442.3 KB
C2PC LetterCover Letter(s)2026-10-15PDF 392.8 KB
Confidentiality Request LetterCover Letter(s)2026-10-15PDF 549.3 KB
Confidentiality RequestCover Letter(s)2021-08-19PDF 311.2 KB
CoverletterCover Letter(s)2021-08-19PDF 65.7 KB
CoverletterCover Letter(s)2021-08-19PDF 66.1 KB
Modular Approval LetterCover Letter(s)2021-08-19PDF 2.3 MB
RF Exposure ExemptionRF Exposure Info2021-08-19PDF 1.1 MB
User Manual Metadata onlyUsers Manual2027-04-13PDF 1.8 MB
User Manual upd Metadata onlyUsers Manual2027-04-13PDF 2 MB
Internal Photos 1 Metadata onlyInternal Photos2027-04-13PDF 5.1 MB
Internal Photos 2 Metadata onlyInternal Photos2027-04-13PDF 5.2 MB
Internal Photos 3 Metadata onlyInternal Photos2027-04-13PDF 5.1 MB
External Photos Metadata onlyExternal Photos2027-04-13PDF 3.3 MB
Test Setup Photos Metadata onlyTest Setup Photos2027-04-13PDF 1,014 KB
Test Setup Photos App F NII Metadata onlyTest Setup Photos2027-04-13PDF 1,020.6 KB
Block Diagram Metadata onlyBlock DiagramPDF 827.5 KB
Block Diagram Metadata onlyBlock DiagramPDF 105.7 KB
Block Diagram upd Metadata onlyBlock DiagramPDF 809.8 KB
RF Sub Module Block Diagram Metadata onlyBlock DiagramPDF 125.1 KB
Schematics Metadata onlySchematicsPDF 2.8 MB
Schematics Metadata onlySchematicsPDF 1.9 MB
Operational Description Metadata onlyOperational DescriptionPDF 128.5 KB
Operational Description Metadata onlyOperational DescriptionPDF 972.8 KB

Application Information

Application IDzKBnHG1p9+2iG50yJ0rIbQ==
Final Action Date2026-10-15
Application PurposeClass II permissive change or modification of presently authorized equipment
Applicant FRN0025941766
ModelST1955
Frequency Range5745-5825 MHz
Equipment ClassNII - Unlicensed National Information Infrastructure TX
Device DescriptionNetwork Audio Streaming Module
Responsible PartyChristoph Apel, christoph.apel@streamunlimited.com , +43-1-6672002
Non-Technical ContactDavid L. Nauber, T-A North America, d.nauber@tahifi-na.com , 912-576-7000
Test FirmBen Wang, Cerpass Technology Corporation Test Laboratory, benw@cerpass.com.tw , 88633226888
TCB Emailcb@industrial-ia.com
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term ConfidentialityYes
Long-Term ConfidentialityYes
Modular EquipmentSingle Modular Approval
Composite DeviceYes
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
zKBnHG1p9+2iG50yJ0rIbQ==2026-10-15Class II permissive change or modification of presently authorized equipment
B9S9nRG9jk2ovoqmD8djHw==2026-10-15Class II permissive change or modification of presently authorized equipment
QCOF6ju+VtxsiznRFZq60w==2021-08-19Original Equipment
F+uGkz+epQq4NvATIcVb+g==2021-08-19Original Equipment
9Oc87Mrp7Xk92iqVZmfo5g==2021-08-19Original Equipment

Equipment Authorization

FrequencyOutputRulesGrant Notes
2402-2480 MHz0.003980015C41, CC
2402-2480 MHz0.0042715C41, CC
2412-2462 MHz0.0993115C41, CC
5180-5240 MHz0.0152415E38, 41, CC
5260-5320 MHz0.0190515E38, 41, CC
5500-5720 MHz0.0323515E38, 41, CC
5745-5825 MHz0.0214715E38, 41, CC

Grants

TCB Grant - Application zKBnHG1p9+2iG50yJ0rIbQ==

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: 10/15/2026

Application Dated: 10/02/2026
StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH
Gutheil Schoder Gasse 10
Vienna, A1100
Austria
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Unlicensed National Information Infrastructure TX
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
CC 15E 5180.0  -  5240.0 0.01524  
CC 15E 5260.0  -  5320.0 0.01905  
CC 15E 5500.0  -  5720.0 0.03235  
CC 15E 5745.0  -  5825.0 0.02147  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas 2JMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing. This device has 20 MHz, 40 MHz and 80 MHz bandwidth modes.

Class II Permissive Change: Integrates this module into the T+A Streaming DAC Preamplifier, Model SDX 3100 HV, with an additional dipole antenna.


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

TCB Grant - Application QCOF6ju+VtxsiznRFZq60w==

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

  TUV Austria Services GmbH
Deutschstrasse 10
Wien, A-1230
Austria
Date of Grant: 08/19/2021

Application Dated: 08/17/2021
StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH
Gutheil Schoder Gasse 10
Vienna, A1100
Austria
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Unlicensed National Information Infrastructure TX
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
38 41 CC 15E 5180.0  -  5240.0 0.01524  
38 41 CC 15E 5260.0  -  5320.0 0.01905  
38 41 CC 15E 5500.0  -  5720.0 0.03235  
38 41 CC 15E 5745.0  -  5825.0 0.02147  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas 2JMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing. This device has 20 MHz, 40 MHz and 80 MHz bandwidth modes.

38: This device has shown compliance, in all grant-listed U-NII sub-bands, with the new rules for U-NII devices adopted under Docket No. 13-49 and may be marketed, manufactured or imported after the June 1, 2016 transition deadline.
41: Installation of this device must not be readily accessible to human subjects closer than 20 cm.
CC: This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application QCOF6ju+VtxsiznRFZq60w==

COPY FEDERAL COMMUNICATIONS
COMMISSION
WASHINGTON, D.C. 20554

GRANT OF EQUIPMENT
AUTHORIZATION
COPY
Certification

StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH Gutheil Schoder Gasse 10
Vienna, A1100
Austria
  Date of Grant: 08/19/2021

Application Dated: 08/17/2021
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Unlicensed National Information Infrastructure TX
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
38 41 CC 15E 5180.0  -  5240.0 0.01524  
38 41 CC 15E 5260.0  -  5320.0 0.01905  
38 41 CC 15E 5500.0  -  5720.0 0.03235  
38 41 CC 15E 5745.0  -  5825.0 0.02147  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas 2JMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing. This device has 20 MHz, 40 MHz and 80 MHz bandwidth modes.


38: This device has shown compliance, in all grant-listed U-NII sub-bands, with the new rules for U-NII devices adopted under Docket No. 13-49 and may be marketed, manufactured or imported after the June 1, 2016 transition deadline.
41: Installation of this device must not be readily accessible to human subjects closer than 20 cm.
CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application F+uGkz+epQq4NvATIcVb+g==

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

  TUV Austria Services GmbH
Deutschstrasse 10
Wien, A-1230
Austria
Date of Grant: 08/19/2021

Application Dated: 08/17/2021
StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH
Gutheil Schoder Gasse 10
Vienna, A1100
Austria
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Digital Transmission System
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
41 CC 15C 2412.0  -  2462.0 0.09931  
41 CC 15C 2402.0  -  2480.0 0.00427  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas SJMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing.

41: Installation of this device must not be readily accessible to human subjects closer than 20 cm.
CC: This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application F+uGkz+epQq4NvATIcVb+g==

COPY FEDERAL COMMUNICATIONS
COMMISSION
WASHINGTON, D.C. 20554

GRANT OF EQUIPMENT
AUTHORIZATION
COPY
Certification

StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH Gutheil Schoder Gasse 10
Vienna, A1100
Austria
  Date of Grant: 08/19/2021

Application Dated: 08/17/2021
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Digital Transmission System
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
41 CC 15C 2412.0  -  2462.0 0.09931  
41 CC 15C 2402.0  -  2480.0 0.00427  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas SJMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing.


41: Installation of this device must not be readily accessible to human subjects closer than 20 cm.
CC: This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application B9S9nRG9jk2ovoqmD8djHw==

Mail To:
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: 10/15/2026

Application Dated: 10/02/2026
StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH
Gutheil Schoder Gasse 10
Vienna, A1100
Austria
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Digital Transmission System
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
CC 15C 2412.0  -  2462.0 0.09931  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas SJMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing.

Class II Permissive Change: Integrates this module into the T+A Streaming DAC Preamplifier, Model SDX 3100 HV, with an additional dipole antenna.


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

TCB Grant - Application 9Oc87Mrp7Xk92iqVZmfo5g==

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

  TUV Austria Services GmbH
Deutschstrasse 10
Wien, A-1230
Austria
Date of Grant: 08/19/2021

Application Dated: 08/17/2021
StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH
Gutheil Schoder Gasse 10
Vienna, A1100
Austria
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
41 CC 15C 2402.0  -  2480.0 0.00398  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas SJMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing.

41: Installation of this device must not be readily accessible to human subjects closer than 20 cm.
CC: This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application 9Oc87Mrp7Xk92iqVZmfo5g==

COPY FEDERAL COMMUNICATIONS
COMMISSION
WASHINGTON, D.C. 20554

GRANT OF EQUIPMENT
AUTHORIZATION
COPY
Certification

StreamUnlimited Engineering GmbH
StreamUnlimited Engineering GmbH Gutheil Schoder Gasse 10
Vienna, A1100
Austria
  Date of Grant: 08/19/2021

Application Dated: 08/17/2021
 
Attention: Christoph Apel , DI

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:  2AJYB-ST1955
Name of Grantee:  StreamUnlimited Engineering GmbH
Equipment Class: Part 15 Spread Spectrum Transmitter
Notes: Network Audio Streaming Module
Modular Type: Single Modular
Grant Notes  FCC Rule Parts Frequency
Range (MHZ)
Output
Watts
Frequency
Tolerance
Emission
Designator
41 CC 15C 2402.0  -  2480.0 0.00398  

This certification is valid with the following antennas: Molex 1461530, Molex 2042810, PulseLarsen Antennas W5098, 2J-Antennas SJMAS05c, Tekfun F04A-SR-V2 and Tekfun F50. The transmitter antenna must not be co-located or operated in conjunction with any other transmitter antenna, except in accordance with FCC multi-transmitter product procedures or as shown in this filing.


41: Installation of this device must not be readily accessible to human subjects closer than 20 cm.
CC: This device is certified pursuant to two different Part 15 rules sections.

Mail To: