1. FCC ID
  2. 2ARXN
  3. 2ARXN-U1

FCC ID 2ARXN-U1

Fi Ultra

by Barking Labs Corp.

Grantee Code: 2ARXN   Product Code: U1
Latest application date: 2026-07-08

FCC ID Device Details

FCC ID2ARXN-U1
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2ARXN
Product CodeU1
Applicant BusinessBarking Labs Corp. 🇺🇸
Related Domains tryfi.com
Equipment ClassFi Ultra
Test FirmSporton International Inc. (Kunshan)

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
1860-1905 MHzClass II permissive change or modification of presently authorized equipment2026-07-08
1860-1905 MHzOriginal Equipment2026-05-11
729-746 MHzOriginal Equipment2026-05-11
2412-2462 MHzOriginal Equipment2026-05-11

Exhibits

DocumentTypeAvailableFile
2ARXN-U1_E-Label&Steps_v1ID Label/Location Info2026-05-11PDF 2.8 MB
2ARXN-U1_TestRpt_Part25Test Report2026-07-08PDF 513.1 KB
2ARXN-U1_Antenna ReportTest Report2026-05-11PDF 1.7 MB
2ARXN-U1_TestRpt_DTS_BLETest Report2026-05-11PDF 4 MB
2ARXN-U1_TestRpt_DTS_WLAN 2.4GTest Report2026-05-11PDF 5.7 MB
2ARXN-U1_TestRpt_JAB_v1Test Report2026-05-11PDF 860.3 KB
2ARXN-U1_TestRpt_PCB_LTE_v1Test Report2026-05-11PDF 2.3 MB
Appendix B.1 - LTE Band2_1-30Test Report2026-05-11PDF 5.6 MB
Appendix B.1 - LTE Band2_121-163Test Report2026-05-11PDF 5.5 MB
Appendix B.1 - LTE Band2_31-60Test Report2026-05-11PDF 5.1 MB
Appendix B.1 - LTE Band2_61-90Test Report2026-05-11PDF 4.9 MB
Appendix B.1 - LTE Band2_91-120Test Report2026-05-11PDF 5.5 MB
Appendix B.10 - LTE Band38_1-30Test Report2026-05-11PDF 5.2 MB
Appendix B.10 - LTE Band38_31-70Test Report2026-05-11PDF 5.8 MB
Appendix B.10 - LTE Band38_71-105Test Report2026-05-11PDF 4.4 MB
Appendix B.11 - LTE Band41_1-30Test Report2026-05-11PDF 5.2 MB
Appendix B.11 - LTE Band41_31-70Test Report2026-05-11PDF 5.8 MB
Appendix B.11 - LTE Band41_71-105Test Report2026-05-11PDF 4.4 MB
Appendix B.12 - LTE Band66_1-30Test Report2026-05-11PDF 5.6 MB
Appendix B.12 - LTE Band66_121-150Test Report2026-05-11PDF 4.9 MB
Appendix B.12 - LTE Band66_151-173Test Report2026-05-11PDF 1.2 MB
Appendix B.12 - LTE Band66_31-60Test Report2026-05-11PDF 5.1 MB
Appendix B.12 - LTE Band66_61-90Test Report2026-05-11PDF 4.9 MB
Appendix B.12 - LTE Band66_91-120Test Report2026-05-11PDF 4.9 MB
Appendix B.2 - LTE Band4_1-30Test Report2026-05-11PDF 5.6 MB
Appendix B.2 - LTE Band4_131-166Test Report2026-05-11PDF 4.5 MB
Appendix B.2 - LTE Band4_31-60Test Report2026-05-11PDF 5.1 MB
Appendix B.2 - LTE Band4_61-95Test Report2026-05-11PDF 5.7 MB
Appendix B.2 - LTE Band4_96-130Test Report2026-05-11PDF 5.7 MB
Appendix B.3 - LTE Band5_1-30Test Report2026-05-11PDF 5.2 MB
Appendix B.3 - LTE Band5_31-60Test Report2026-05-11PDF 4.9 MB
Appendix B.3 - LTE Band5_61-90Test Report2026-05-11PDF 4.9 MB
Appendix B.3 - LTE Band5_91-120Test Report2026-05-11PDF 3.7 MB
Appendix B.4 - LTE Band7_1-30Test Report2026-05-11PDF 5.2 MB
Appendix B.4 - LTE Band7_31-60Test Report2026-05-11PDF 4.4 MB
Appendix B.4 - LTE Band7_61-90Test Report2026-05-11PDF 4.4 MB
Appendix B.4 - LTE Band7_91-105Test Report2026-05-11PDF 3.7 MB
Appendix B.5 - LTE Band12_1-30Test Report2026-05-11PDF 5.2 MB
Appendix B.5 - LTE Band12_31-60Test Report2026-05-11PDF 4.9 MB
Appendix B.5 - LTE Band12_61-90Test Report2026-05-11PDF 4.9 MB
Appendix B.5 - LTE Band12_91-120Test Report2026-05-11PDF 3.7 MB
Appendix B.6 - LTE Band13_1-30Test Report2026-05-11PDF 4.8 MB
Appendix B.6 - LTE Band13_31-43Test Report2026-05-11PDF 1.7 MB
Appendix B.7 - LTE Band25_1-30Test Report2026-05-11PDF 5.6 MB
Appendix B.7 - LTE Band25_131-166Test Report2026-05-11PDF 4.5 MB
Appendix B.7 - LTE Band25_31-60Test Report2026-05-11PDF 5.1 MB
Appendix B.7 - LTE Band25_61-95Test Report2026-05-11PDF 5.7 MB
Appendix B.7 - LTE Band25_96-130Test Report2026-05-11PDF 5.7 MB
Appendix B.8 - LTE Band26 (814-824 MHz)_1-30Test Report2026-05-11PDF 4.9 MB
Appendix B.8 - LTE Band26 (814-824 MHz)_31-60Test Report2026-05-11PDF 4.9 MB
Appendix B.8 - LTE Band26 (814-824 MHz)_61-90Test Report2026-05-11PDF 4.9 MB
Appendix B.8 - LTE Band26 (814-824 MHz)_91-110Test Report2026-05-11PDF 1.5 MB
Appendix B.9 - LTE Band26 (824-849 MHz)_1-30Test Report2026-05-11PDF 5.2 MB
Appendix B.9 - LTE Band26 (824-849 MHz)_121-150Test Report2026-05-11PDF 2.7 MB
Appendix B.9 - LTE Band26 (824-849 MHz)_31-60Test Report2026-05-11PDF 5 MB
Appendix B.9 - LTE Band26 (824-849 MHz)_61-90Test Report2026-05-11PDF 4.9 MB
Appendix B.9 - LTE Band26 (824-849 MHz)_91-120Test Report2026-05-11PDF 4.9 MB
Appendix C - All LTE BandsTest Report2026-05-11PDF 112.9 KB
PD20230223RF01_FCC LTE RF Test ReportTest Report2026-05-11PDF 643.7 KB
2ARXN-U1_Attestation_Covered List_2.911d5(i)&(ii)Attestation Statements2026-07-08PDF 114.4 KB
2ARXN-U1_cvrltr_Attestation_Covered List_2.911d7Attestation Statements2026-07-08PDF 264.1 KB
2ARXN-U1_cvrltr_Part_25_SCS_Attestation_(C2PC)Cover Letter(s)2026-07-08PDF 120.4 KB
2ARXN-U1_cvrltr_Attestation_Covered List_2.911d5(i)&(ii)Attestation Statements2026-05-11PDF 120.5 KB
2ARXN-U1_cvrltr_FCC POACover Letter(s)2026-07-08PDF 115.5 KB
2ARXN-U1_cvrltr_FCC Confidentiality Request(LTC+STC)Cover Letter(s)2026-05-11PDF 114.8 KB
2ARXN-U1_cvrltr_FCC POACover Letter(s)2026-05-11PDF 188.4 KB
2ARXN-U1_cvrltr_FCC Request of data re-use_v1Cover Letter(s)2026-05-11PDF 261.3 KB
FCC WWAN Module authorization and confidentiality requests_v1Cover Letter(s)2026-05-11PDF 104.1 KB
2ARXN-U1_TestRpt_RF ExposureRF Exposure Info2026-07-08PDF 326.1 KB
2ARXN-U1_TestRpt_RF ExposureRF Exposure Info2026-05-11PDF 325.3 KB
2ARXN-U1_Regulatory Insert Metadata onlyUsers Manual2026-11-08PDF 1.3 MB
2ARXN-U1_User Manual_Part1-2_v1 Metadata onlyUsers Manual2026-11-08PDF 4.7 MB
2ARXN-U1_User Manual_Part2-2_v1 Metadata onlyUsers Manual2026-11-08PDF 3.7 MB
2ARXN-U1_InPho Metadata onlyInternal Photos2026-11-08PDF 3.4 MB
2ARXN-U1_ExPho Metadata onlyExternal Photos2026-11-08PDF 1.4 MB
2ARXN-U1_Tsup_Antenna Metadata onlyTest Setup Photos2026-11-08PDF 90.9 KB
2ARXN-U1_Tsup_CXX Metadata onlyTest Setup Photos2026-11-08PDF 288.4 KB
2ARXN-U1_Tsup_DTS_BLE Metadata onlyTest Setup Photos2026-11-08PDF 327.4 KB
2ARXN-U1_Tsup_DTS_WLAN 2.4G Metadata onlyTest Setup Photos2026-11-08PDF 327.3 KB
2ARXN-U1_Tsup_PCB_LTE Metadata onlyTest Setup Photos2026-11-08PDF 144.7 KB
2ARXN-U1_BlckDic Metadata onlyBlock DiagramPDF 165.4 KB
2ARXN-U1_SchemDic Metadata onlySchematicsPDF 3.5 MB
2ARXN-U1_OpDes_v1 Metadata onlyOperational DescriptionPDF 1.4 MB
KDB inquiry history Metadata onlyOperational DescriptionPDF 281.6 KB
KDB inquiry history_Low duty cycle Metadata onlyOperational DescriptionPDF 762.6 KB
2ARXN-U1_PartsLst Metadata onlyParts List/Tune Up InfoPDF 56.3 KB
2ARXN-U1_Tune-up Metadata onlyParts List/Tune Up InfoPDF 100.6 KB

Application Information

Application IDYHjG6LmC5xhKoAOsiLg75A==
Final Action Date2026-07-08
Application PurposeClass II permissive change or modification of presently authorized equipment
Applicant FRN0027868058
ModelU1
Frequency Range1860-1905 MHz
Equipment ClassPCB - PCS Licensed Transmitter
Device DescriptionFi Ultra
Responsible PartyRobert Blake, bob@tryfi.com , 914-249-9347
Non-Technical ContactRobert Blake, Barking Labs Corp., bob@tryfi.com
Test FirmMark Qu, Sporton International Inc. (Kunshan), markqu@sporton-lab.com , +86 0512-57900158
TCB EmailQA65@sporton-usa.com
TCB ScopeB1: Commercial mobile radio services equipment in the following 47 CFR Parts 20, 22 (cellular), 24,25 (below 3 GHz) & 27
Short-Term ConfidentialityNo
Long-Term ConfidentialityNo
Modular EquipmentDoes not apply
Composite DeviceYes
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
YHjG6LmC5xhKoAOsiLg75A==2026-07-08Class II permissive change or modification of presently authorized equipment
zD++4fg9wNxJKr5yuXO5bw==2026-05-11Original Equipment
yOzLyOueiBTw3q9m1hpvcg==2026-05-11Original Equipment
wqtNPgcOHuGNFT9+8yq/aA==2026-05-11Original Equipment
MnWwMkyegTE1O8kDfjFOTQ==2026-05-11Original Equipment

Equipment Authorization

FrequencyOutputToleranceEmissionRulesGrant Notes
1860-1900 MHz0.22132.5 PM17M8G7D24E
1860-1900 MHz0.18492.5 PM4M92W7D24E
1860-1905 MHz0.22492.5 PM17M8G7D24E
1860-1905 MHz0.18972.5 PM4M92W7D24E
1857.5-1907.5 MHz0.22752.5 PM13M5G7D24E
1857.5-1907.5 MHz0.19282.5 PM5M03W7D24E
1720-1745 MHz0.42462.5 PM17M9G7D27
1720-1745 MHz0.3752.5 PM5M00W7D27
1710.7-1754.3 MHz0.43252.5 PM1M09G7D27
704-711 MHz0.1182.5 PM8M99G7D27
704-711 MHz0.08112.5 PM4M90W7D27
700.5-714.5 MHz0.08912.5 PM2M70W7D27
1720-1770 MHz0.45392.5 PM17M9G7D27
1720-1770 MHz0.40182.5 PM5M00W7D27
1712.5-1777.5 MHz0.48082.5 PM4M50G7D27
729-746 MHz15BCC
1860-1905 MHz0.22492.5 PM17M8G7D24E, 2507
1860-1905 MHz0.18972.5 PM4M92W7D24E, 2507
1857.5-1907.5 MHz0.22752.5 PM13M5G7D24E, 2507
1857.5-1907.5 MHz0.19282.5 PM5M03W7D24E, 2507
15BCC
2402-2480 MHz0.01215CCC
2412-2462 MHz0.167915CCC

Grants

TCB Grant - Application zD++4fg9wNxJKr5yuXO5bw==

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

  Sporton International (USA) Inc.
1175 Montague Expressway
Milpitas, CA 95035
Date of Grant: 05/11/2026

Application Dated: 05/11/2026
Barking Labs Corp.
419 Lafayette St.
Floor 2
New York, NY 10003
 
Attention: Robert Blake , VP Hardware & Operations

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:  2ARXN-U1
Name of Grantee:  Barking Labs Corp.
Equipment Class: PCS Licensed Transmitter
Notes: Fi Ultra
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
24E 1860.0  -  1900.0 0.2213 2.5  PM 17M8G7D
24E 1860.0  -  1900.0 0.1849 2.5  PM 4M92W7D
24E 1860.0  -  1905.0 0.2249 2.5  PM 17M8G7D
24E 1860.0  -  1905.0 0.1897 2.5  PM 4M92W7D
24E 1857.5  -  1907.5 0.2275 2.5  PM 13M5G7D
24E 1857.5  -  1907.5 0.1928 2.5  PM 5M03W7D
27 1720.0  -  1745.0 0.4246 2.5  PM 17M9G7D
27 1720.0  -  1745.0 0.375 2.5  PM 5M00W7D
27 1710.7  -  1754.3 0.4325 2.5  PM 1M09G7D
27 704.0  -  711.0 0.118 2.5  PM 8M99G7D
27 704.0  -  711.0 0.0811 2.5  PM 4M90W7D
27 700.5  -  714.5 0.0891 2.5  PM 2M70W7D
27 1720.0  -  1770.0 0.4539 2.5  PM 17M9G7D
27 1720.0  -  1770.0 0.4018 2.5  PM 5M00W7D
27 1712.5  -  1777.5 0.4808 2.5  PM 4M50G7D

Output Power is EIRP and ERP for above and below 1 GHz, respectively. This device complies with the SAR exclusion threshold set forth in KDB 447498 and therefore can be used in portable configurations. This device supports LTE of 1.4, 3, 5, 10, 15 and 20 MHz bandwidth modes for LTE Bands 2, 4, 25, and 66; LTE of 1.4, 3, 5 and 10 MHz bandwidth modes for LTE Band 12.

TCB Grant - Application yOzLyOueiBTw3q9m1hpvcg==

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

  Sporton International (USA) Inc.
1175 Montague Expressway
Milpitas, CA 95035
Date of Grant: 05/11/2026

Application Dated: 05/11/2026
Barking Labs Corp.
419 Lafayette St.
Floor 2
New York, NY 10003
 
Attention: Robert Blake , VP Hardware & Operations

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:  2ARXN-U1
Name of Grantee:  Barking Labs Corp.
Equipment Class: Communications Rcvr for use w/ licensed Tx and CBs
Notes: Fi Ultra
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15B 729.0  -  746.0


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

TCB Grant - Application YHjG6LmC5xhKoAOsiLg75A==

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

  Sporton International (USA) Inc.
1175 Montague Expressway
Milpitas, CA 95035
Date of Grant: 07/08/2026

Application Dated: 07/06/2026
Barking Labs Corp.
419 Lafayette St.
Floor 2
New York, NY 10003
 
Attention: Robert Blake , VP Hardware & Operations

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:  2ARXN-U1
Name of Grantee:  Barking Labs Corp.
Equipment Class: PCS Licensed Transmitter
Notes: Fi Ultra
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
24E 1860.0  -  1900.0 0.2213 2.5  PM 17M8G7D
24E 1860.0  -  1900.0 0.1849 2.5  PM 4M92W7D
07 24E, 25 1860.0  -  1905.0 0.2249 2.5  PM 17M8G7D
07 24E, 25 1860.0  -  1905.0 0.1897 2.5  PM 4M92W7D
07 24E, 25 1857.5  -  1907.5 0.2275 2.5  PM 13M5G7D
07 24E, 25 1857.5  -  1907.5 0.1928 2.5  PM 5M03W7D
27 1720.0  -  1745.0 0.4246 2.5  PM 17M9G7D
27 1720.0  -  1745.0 0.375 2.5  PM 5M00W7D
27 1710.7  -  1754.3 0.4325 2.5  PM 1M09G7D
27 704.0  -  711.0 0.118 2.5  PM 8M99G7D
27 704.0  -  711.0 0.0811 2.5  PM 4M90W7D
27 700.5  -  714.5 0.0891 2.5  PM 2M70W7D
27 1720.0  -  1770.0 0.4539 2.5  PM 17M9G7D
27 1720.0  -  1770.0 0.4018 2.5  PM 5M00W7D
27 1712.5  -  1777.5 0.4808 2.5  PM 4M50G7D

Class II Permissive Change: Add SCS capabilities via software under Part 25 FCC rules.

Output Power is EIRP and ERP for above and below 1 GHz, respectively. This device complies with the SAR exclusion threshold set forth in KDB 447498 and therefore can be used in portable configurations. This device supports LTE of 1.4, 3, 5, 10, 15 and 20 MHz bandwidth modes for LTE Bands 2, 4, 25, and 66; LTE of 1.4, 3, 5 and 10 MHz bandwidth modes for LTE Band 12.


07: Supplemental Coverage from Space device certified per R&O FCC 24-28.

TCB Grant - Application wqtNPgcOHuGNFT9+8yq/aA==

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

  Sporton International (USA) Inc.
1175 Montague Expressway
Milpitas, CA 95035
Date of Grant: 05/11/2026

Application Dated: 05/11/2026
Barking Labs Corp.
419 Lafayette St.
Floor 2
New York, NY 10003
 
Attention: Robert Blake , VP Hardware & Operations

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:  2ARXN-U1
Name of Grantee:  Barking Labs Corp.
Equipment Class: Part 15 Class B Digital Device
Notes: Fi Ultra
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
CC 15B  - 


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

TCB Grant - Application MnWwMkyegTE1O8kDfjFOTQ==

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

  Sporton International (USA) Inc.
1175 Montague Expressway
Milpitas, CA 95035
Date of Grant: 05/11/2026

Application Dated: 05/11/2026
Barking Labs Corp.
419 Lafayette St.
Floor 2
New York, NY 10003
 
Attention: Robert Blake , VP Hardware & Operations

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:  2ARXN-U1
Name of Grantee:  Barking Labs Corp.
Equipment Class: Digital Transmission System
Notes: Fi Ultra
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 0.1679  

Output Power listed is the maximum conducted output power. This device complies with the SAR exclusion threshold set forth in KDB 447498 and therefore can be used in portable configurations.

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