1. FCC ID
  2. PX8
  3. PX8RX78V3-B37

FCC ID PX8RX78V3-B37

Public Safety 700MHz and 800MHz Bi-Direction Amplifier

by Comba Telecom Network Systems Limited

Grantee Code: PX8   Product Code: RX78V3B37
Latest application date: 2026-07-07

FCC ID Device Details

FCC IDPX8RX78V3-B37
Mirrorsfcc.id | gov | fccid.ai
Grantee CodePX8
Product CodeRX78V3B37
Applicant BusinessComba Telecom Network Systems Limited 🇨🇳
Related Domains comba-network.com combausa.com
Equipment ClassPublic Safety 700MHz and 800MHz Bi-Direction Amplifier
Test FirmSGS-CSTC Standards Technical Services Co., Ltd.

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
851-862 MHzOriginal Equipment2026-07-07

Exhibits

DocumentTypeAvailableFile
External PhotoExternal Photos2026-07-07PDF 1 MB
Lable and locationID Label/Location Info2026-07-07PDF 147.2 KB
Test Setup PhotoTest Setup Photos2026-07-07PDF 820.4 KB
Test Data and Result01-1Test Report2026-07-07PDF 4.9 MB
Test Data and Result01-2Test Report2026-07-07PDF 5 MB
Test Data and Result01-3Test Report2026-07-07PDF 5 MB
Test Data and Result01-4Test Report2026-07-07PDF 3.6 MB
Test Data and Result02-1Test Report2026-07-07PDF 4.9 MB
Test Data and Result02-2Test Report2026-07-07PDF 2.8 MB
Test Report 700MTest Report2026-07-07PDF 1.1 MB
Test Report 800MTest Report2026-07-07PDF 1.1 MB
Applicant Declaration LetterAttestation Statements2026-07-07PDF 204.7 KB
AttestationAttestation Statements2026-07-07PDF 103 KB
CoverList AttestationAttestation Statements2026-07-07PDF 192.4 KB
Non-Disclosure AgreementAttestation Statements2026-07-07PDF 198.9 KB
US Agent LetterAttestation Statements2026-07-07PDF 170 KB
Authority letterCover Letter(s)2026-07-07PDF 95.7 KB
Confidential letterCover Letter(s)2026-07-07PDF 161.3 KB
MPE reportRF Exposure Info2026-07-07PDF 715.4 KB
User Manual Metadata onlyUsers ManualPDF 2.4 MB
Internal Photo Metadata onlyInternal PhotosPDF 1.1 MB
Block diagram Metadata onlyBlock DiagramPDF 75.1 KB
Schematic Metadata onlySchematicsPDF 1.5 MB
Operation description Metadata onlyOperational DescriptionPDF 193.3 KB
Tune Up Procedure Metadata onlyParts List/Tune Up InfoPDF 1.6 MB

Application Information

Application ID+CHmPWTAk98gAaGn+ui1Gw==
Final Action Date2026-07-07
Application PurposeOriginal Equipment
Applicant FRN0006794697
ModelRX78V3-B37
Frequency Range851-862 MHz
Equipment ClassB9B - Part 90 Class B Industrial Booster (non-SMR)
Device DescriptionPublic Safety 700MHz and 800MHz 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
+CHmPWTAk98gAaGn+ui1Gw==2026-07-07Original Equipment

Equipment Authorization

FrequencyOutputToleranceEmissionRulesGrant Notes
758-775 MHz5.5335AmpF3E90PF
758-775 MHz5.5335AmpF1W90PF
788-805 MHz0.5902AmpF3E90PF
788-805 MHz0.5902AmpF1W90PF
851-862 MHz5.6494AmpF3E90PF
851-862 MHz5.6494AmpF1W90PF
806-817 MHz0.6109AmpF3E90PF
806-817 MHz0.6109AmpF1W90PF

Grants

TCB Grant - Application +CHmPWTAk98gAaGn+ui1Gw==

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: 07/07/2026

Application Dated: 07/07/2026
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:  PX8RX78V3-B37
Name of Grantee:  Comba Telecom Network Systems Limited
Equipment Class: Part 90 Class B Industrial Booster (non-SMR)
Notes: Public Safety 700MHz and 800MHz Bi-Direction Amplifier
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
PF 90 758.0  -  775.0 5.5335  Amp F3E
PF 90 758.0  -  775.0 5.5335  Amp F1W
PF 90 788.0  -  805.0 0.5902  Amp F3E
PF 90 788.0  -  805.0 0.5902  Amp F1W
PF 90 851.0  -  862.0 5.6494  Amp F3E
PF 90 851.0  -  862.0 5.6494  Amp F1W
PF 90 806.0  -  817.0 0.6109  Amp F3E
PF 90 806.0  -  817.0 0.6109  Amp F1W

This is class A 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 43.4cm 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