1. FCC ID
  2. VSO
  3. VSODM-4100P

FCC ID VSODM-4100P

VHF Transceiver

by YEONHWA M TECH CO.,LTD

Grantee Code: VSO   Product Code: DM4100P
Latest application date: 2025-12-17

FCC ID Device Details

FCC IDVSODM-4100P
Mirrorsfcc.id | gov | fccid.ai
Grantee CodeVSO
Product CodeDM4100P
Applicant BusinessYEONHWA M TECH CO.,LTD 🇰🇷
Related Domains xradio.co.kr maxonamerica.com
Equipment ClassVHF Transceiver
Test FirmLTA Co.,Ltd

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
136-174 MHzOriginal Equipment2025-12-17

Exhibits

DocumentTypeAvailableFile
User ManualUsers Manual2026-06-15PDF 606 KB
Internal PhotosInternal Photos2026-06-15PDF 1.5 MB
External PhotosExternal Photos2026-06-15PDF 1.2 MB
Label Info & LocationID Label/Location Info2025-12-17PDF 134.9 KB
TsupTest Setup Photos2026-06-15PDF 346 KB
Test ReportTest Report2025-12-17PDF 3.4 MB
Attestation Statement Part 2.911(d)(7)Attestation Statements2025-12-17PDF 146.3 KB
Attstn Stmts parts 2.911(d)(5)(i)&(ii)Attestation Statements2025-12-17PDF 174.3 KB
DOC AttestationAttestation Statements2025-12-17PDF 137 KB
Agent AuthorizationCover Letter(s)2025-12-17PDF 132.5 KB
Confidentiality RequestCover Letter(s)2025-12-17PDF 128.6 KB
Model Differences LetterCover Letter(s)2025-12-17PDF 131.5 KB
RF ExposureRF Exposure Info2025-12-17PDF 307.3 KB
Block Diagram Metadata onlyBlock DiagramPDF 230 KB
Schematics Metadata onlySchematicsPDF 1.6 MB
Schematics PCB Layout Metadata onlySchematicsPDF 2 MB
Operational Description Metadata onlyOperational DescriptionPDF 419 KB
Parts List Metadata onlyParts List/Tune Up InfoPDF 111.6 KB
Tune Up Procedure Metadata onlyParts List/Tune Up InfoPDF 135.1 KB

Application Information

Application ID5Mv/jvsGeX1ZDeb3PIGgHA==
Final Action Date2025-12-17
Application PurposeOriginal Equipment
Applicant FRN0017098799
ModelDM-4100P
Frequency Range136-174 MHz
Equipment ClassTNB - Licensed Non-Broadcast Station Transmitter
Device DescriptionVHF Transceiver
Responsible PartyHWAN-DAE KIM, hdkim@xradio.co.kr , 82-31-444-7270
Non-Technical ContactPaul Sutherland, Maxon America, Inc, psutherland@maxonamerica.com , 913-859-9515
Test FirmAhn Chulho, LTA Co.,Ltd, chahn@ltalab.com , 82-31-323-6008
TCB Emailtei@timcoengr.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 ConfidentialityYes
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
5Mv/jvsGeX1ZDeb3PIGgHA==2025-12-17Original Equipment

Equipment Authorization

FrequencyOutputToleranceEmissionRulesGrant Notes
136-174 MHz5.02.5 PM11K0F3E90EF ES
136-174 MHz5.02.5 PM7K60FXD90EF ES
136-174 MHz5.02.5 PM7K60FXE90EF ES
136-174 MHz50.02.5 PM11K0F3E90EF ES
136-174 MHz50.02.5 PM7K60FXD90EF ES
136-174 MHz50.02.5 PM7K60FXE90EF ES

Grants

TCB Grant - Application 5Mv/jvsGeX1ZDeb3PIGgHA==

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: 12/17/2025

Application Dated: 12/17/2025
YEONHWA M TECH CO.,LTD
36, Jeonpa-ro 44beon-gil Manan-gu, Gyeonggi-do
Anyang-si,
South Korea
 
Attention: HWAN-DAE KIM ,

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:  VSODM-4100P
Name of Grantee:  YEONHWA M TECH CO.,LTD
Equipment Class: Licensed Non-Broadcast Station Transmitter
Notes: VHF Transceiver
Grant Notes  FCC Rule Parts Frequency
Range (MHZ) 		Output
Watts 		Frequency
Tolerance 		Emission
Designator
EF ES 90 136.0  -  174.0 5.0 2.5  PM 11K0F3E
EF ES 90 136.0  -  174.0 5.0 2.5  PM 7K60FXD
EF ES 90 136.0  -  174.0 5.0 2.5  PM 7K60FXE
EF ES 90 136.0  -  174.0 50.0 2.5  PM 11K0F3E
EF ES 90 136.0  -  174.0 50.0 2.5  PM 7K60FXD
EF ES 90 136.0  -  174.0 50.0 2.5  PM 7K60FXE

Output Power listed is rated conducted; maximum conducted output power as allowed by 47 CFR 90.205(s) is 60 W. This transmitter must be restricted to work related operations in an Occupational / Controlled RF exposure environment, not exceeding a maximum transmitting duty factor of 50%. All qualified end-users of this device must have the knowledge to control their exposure conditions and/or duration, and the exposure conditions and/or duration of their passengers and bystanders, to comply with the General Population / Uncontrolled MPE limit and requirements. A label, as described in this filing, must be displayed on the device to direct users to specific training information for meeting occupational exposure requirements, and users must be provided with the training information. Users/operators must be provided with the training information, antenna installation and transmitter operating conditions for satisfying RF exposure compliance. The antenna used for this transmitter must be installed to provide a separation distance of at least 63 cm and must not be co-located or operating in conjunction with any other antenna or transmitter. Users and installers must be provided with antenna installation instructions and transmitter operating conditions, including antenna co-location requirements of ยง 1.1307(b)(3), for satisfying RF exposure compliance..

EF: This device may contain functions that are not operational in U.S Territories except as noted in the filing. This grant has extended frequencies as noted in the filing and Section 2.927(b) applies to this authorization.
ES: This equipment is capable of supporting a minimum data rate of 4800 bits per second per 6.25 kHz of channel bandwidth.