1. FCC ID
  2. PX8
  3. PX8RX04V3S-B

FCC ID PX8RX04V3S-B

Public Safety VHF Bi-Direction Amplifier

by Comba Telecom Network Systems Limited

Grantee Code: PX8   Product Code: RX04V3SB
Latest application date: 2026-02-10

FCC ID Device Details

FCC IDPX8RX04V3S-B
Mirrorsfcc.id | gov | fccid.ai
Grantee CodePX8
Product CodeRX04V3SB
Applicant BusinessComba Telecom Network Systems Limited 🇨🇳
Related Domains comba-network.com combausa.com
Equipment ClassPublic Safety VHF Bi-Direction Amplifier
Test FirmSGS-CSTC Standards Technical Services Co., Ltd.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
450-512 MHzOriginal Equipment2026-02-10

Exhibits

DocumentTypeAvailableFile
External PhotoExternal Photos2026-02-10PDF 896 KB
Lable and locationID Label/Location Info2026-02-10PDF 149.2 KB
Test Setup PhotoTest Setup Photos2026-02-10PDF 837 KB
Test Data and Result A1Test Report2026-02-10PDF 5.5 MB
Test Data and Result A2Test Report2026-02-10PDF 4.8 MB
Test Data and Result B1Test Report2026-02-10PDF 5.4 MB
Test Data and Result B2Test Report2026-02-10PDF 4.4 MB
Test Data and Result C1Test Report2026-02-10PDF 5.5 MB
Test Data and Result C2Test Report2026-02-10PDF 4.8 MB
Test ReportTest Report2026-02-10PDF 1 MB
Applicant Declaration LetterAttestation Statements2026-02-10PDF 205.2 KB
Attestation letterAttestation Statements2026-02-10PDF 87.6 KB
CoverList AttestationAttestation Statements2026-02-10PDF 192.7 KB
Non-Disclosure AgreementAttestation Statements2026-02-10PDF 195.4 KB
US Agent LetterAttestation Statements2026-02-10PDF 190.5 KB
Authority letterCover Letter(s)2026-02-10PDF 95.8 KB
Confidential letterCover Letter(s)2026-02-10PDF 142.3 KB
MPE reportRF Exposure Info2026-02-10PDF 874.9 KB
User Manual Metadata onlyUsers ManualPDF 1.4 MB
Internal Photo Metadata onlyInternal PhotosPDF 2 MB
Block diagram Metadata onlyBlock DiagramPDF 73.5 KB
Schematic Metadata onlySchematicsPDF 2 MB
Operation description Metadata onlyOperational DescriptionPDF 274.4 KB
Tune up procedure Metadata onlyParts List/Tune Up InfoPDF 1.2 MB

Application Information

Application ID0E2AaZCzO93CD+pwN0U7Jg==
Final Action Date2026-02-10
Application PurposeOriginal Equipment
Applicant FRN0006794697
ModelRX04V3S-B
Frequency Range450-512 MHz
Equipment ClassB9B - Part 90 Class B Industrial Booster (non-SMR)
Device DescriptionPublic Safety VHF Bi-Direction Amplifier
Responsible PartyCharlie Lai, laiquan@comba-network.com , +86 2028390000
Technical ContactBonnie Liao, SGS-CSTC Standards Technical Services Co., Ltd, Bonnie.liao@sgs.com , 82155379
Non-Technical ContactMatthew Lunny, Comba Telecom, mlunny@combausa.com , (214) 250-2658
Test FirmBonnie Liao, SGS-CSTC Standards Technical Services Co., Ltd., bonnie.liao@sgs.com , 02082155379
TCB EmailUSCTS.TCB@SGS.COM
TCB ScopeB2: General Mobile Radio And Broadcast Services equipment in the following 47 CFR Parts 22 (non-cellular) 73, 74, 90, 95, 97, & 101 (all below 3 GHz)
Short-Term ConfidentialityNo
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceNo
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
0E2AaZCzO93CD+pwN0U7Jg==2026-02-10Original Equipment

Equipment Authorization

FrequencyOutputToleranceEmissionRulesGrant Notes
406.1-420 MHz4.831AmpF3E90PF
406.1-420 MHz4.831AmpF1W90PF
421-430 MHz4.775AmpF3E90PF
421-430 MHz4.775AmpF1W90PF
450-512 MHz4.426AmpF3E90PF
450-512 MHz4.426AmpF1W90PF

Grants

TCB Grant - Application 0E2AaZCzO93CD+pwN0U7Jg==

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

  SGS North America, Inc.
620 Old Peachtree Road NW Suite 100
Suwanee, GA 30024
Date of Grant: 02/10/2026

Application Dated: 02/10/2026
Comba Telecom Network Systems Limited
Flat/Rm 10, 3/F, Bio-Informatics Ctr, 2 Science
Park West Avenue, HK Science Park, Pak Shek Kok
HongKong, 510663
China
 
Attention: Charlie Lai , Director

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:  PX8RX04V3S-B
Name of Grantee:  Comba Telecom Network Systems Limited
Equipment Class: Part 90 Class B Industrial Booster (non-SMR)
Notes: Public Safety VHF Bi-Direction Amplifier
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
PF 90 406.1  -  420.0 4.831  Amp F3E
PF 90 406.1  -  420.0 4.831  Amp F1W
PF 90 421.0  -  430.0 4.775  Amp F3E
PF 90 421.0  -  430.0 4.775  Amp F1W
PF 90 450.0  -  512.0 4.426  Amp F3E
PF 90 450.0  -  512.0 4.426  Amp F1W

This is class B booster. Output power listed is conducted. The permitted transmit antenna with maximum gain 0dBi must be fixed-mounted on permanent structures, be installed to provide a separation distance of at least 65.1cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC multi-transmitter product procedures. The power of the ERP exceeds 5W which exceeding section 90.219 conditions, according to KDB 935210 D02 v04r03 specific station authorizations are required for this product.

PF: Transmitter approved for Public Safety Broadband