FCC ID: POD-DMR1 DMR Digital Transceiver

SAFETY TRAINING INFORMATION Our TYT ELECTRONICS CO., LTD radio generators RF electromagnetic during transmit mode.This radio is designed for and classified as"Occupational Use Only", meaning it must be used only during the course of employment by individuals aware of the hazards,and the ways To Minimize Such hazards. This radio is NOT intended for use by the"General Population"

in an uncontrolled environment. This radio has been tested and complies with the FCC RF exposure limits for

"Occupational Use Only".Inaddition, our TYT ELECTRONICS CO., LTD radio complies with the following Standards and Guidelines with regard to RF energy and electromagnetic energy levels and evaluation of such levels for exposure to humans:

--IEEE Std. 1528:2013 and KDB447498, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields.

--American National Standards Institute (C95.1-1992), IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz.

--American National Standards Institute (C95.3-1992), IEEE Recommended Practice for the Measurement of Potentially Hazardous Electromagnetic Fields- RF and Microwave. The information listed above provides the user with the information needed to make him or her aware of RF exposure, and what to do to assure that this radio operates with the FCC RF exposure limits of this radio. Electromagnetic Interference/Compatibility During transmissions, TYT ELECTRONICS CO., LTD radio generates RF energy that can possibly cause interference with other devices or systems. To avoid such interference, turn off the radio in areas where signs are posted to do so. DO NOT operate the transmitter in areas that are sensitive to electromagnetic radiation such as hospitals, aircraft, and blasting sites. Occupational/Controlled Use The radio transmitter is used in situations in which persons are exposed as consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Attention:

This radio complieswith IEEE and ICNIRP exposure limits for occupational/controlled RF exposure emvironment at operating duty factors of up to 50% and is authorized by the FCC for occupational use only. An appropriate warning lable is affixed to all units. In order to comply with RF exposure requirements, a minimum distance of 2.5cm must be maintained when held-to-face, and body-worn operations are restricted to the approved original acessories (belt clip). Do not use this device when antenna shows obvious damages This product is compliance to FCC RF Exposure requirements and refers to FCC website https://apps.fcc.gov/oetcf/eas/reports/GenericSearch.cfm search for FCC ID:POD-DMR1 to gain further information include SAR Values. SAFETY INFORMATION FOR USER The transceiver is excellently designed with advanced technology. Please observe the following precautions to perform your obligation, prevent personal injury and ensure the safety of transceiver usage. 1. 2. Keep the transceiver and accessories away from children. Please do not try to open or modify the transceiver without permission, non-professionals process may also cause damage. Please use assorted battery and charger to avoid damage. Please use assorted antenna to ensure the communication distance. Please do not expose the transceiver to long period of direct sunlight, nor place it close to heat appliances. Please do not put the transceiver in excessively dusty or humid areas. Do not use harsh chemicals, cleaning solvents to clean the transceiver. Do not transmit without antenna. When using this transceiver, we recommend transmitting for 1 minute then receiving for 4 minutes. Continuous transmitting for long time or working in high power will heat the back of the transceiver. Do not place the transceivers hot back close to any surface of plastic. If any abnormal odor or smoke detected coming from the transceiver, turn off the power and take off the battery pack and its case. Then contact local dealers. We and our distributors will offer safety/RF exposure trainings to the users after purchasing the devices. 3. 4. 5. 6. 7. 8. 9. 10. 11.

Digital Data rate 9600bps 11K0FXD 11K0FXW

TYT ELECTRONICS CO., LTD Agent Authorization Company: TYT ELECTRONICS CO., LTD Address: Block 39-1, Optoelectronics-information industry base, Nan'an, Quanzhou, Fujian, China Product Name: DMR Digital Transceiver Model Number(s): MD-280, MD-280A, MD-280B, MD-280C, MD-280D Product Description: DMR Digital Transceiver We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2020-09-18 Name:

Jiamao Lin Company:

TYT ELECTRONICS CO., LTD

Block 39-1, Optoelectronics-information industry base, Nan'an, Quanzhou, Fujian, China. TYT ELECTRONICS CO., LTD Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 SUBJECT:Class II Permissive Charge for FCC ID: POD-DMR1 The product,: DMR Digital Transceiver, has been granted by FCC dated 11/17/2017, FCC ID: POD-DMR1. Now we, TYT ELECTRONICS CO.,LTD would like to modify the authorized equipment for below changes:

Modified R636,R635,R518,R517 Modified C543,C580,C579,C577,C706,C504, Add C541 Removed C591 Add Model: MD-280A, MD-280B MD-280C, MD-280D Old 56R New 10R R636 R635 R517 R518 C543 C580 C579 C577 C706 C504 C591 C541 100R 100R 12P 220R 220R 3P 100P 30P 68P 27P 104P 104P 6P 103P 105P 4P 6P NC NC 3P Note:The adjustment of resistance & capacitance does not affect product RF. 47R 22R We would like to certify the additional of certified FCC ID: POD-DMR1 as a Class II Permissive Change in this device. Thank you for your attention in this matter. Signatory Contact Person:Jiamao Lin Date:2020.09.16

TYT ELECTRONICS CO., LTD Sept. 18, 2020 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID : POD-DMR1 Model Number: MD-280, MD-280A, MD-280B, MD-280C, MD-280D To Whom It May Concern:

We, TYT ELECTRONICS CO., LTD hereby declare that the model : MD-280A, MD-280B, MD-280C, MD-280D is identical with the model : MD-280,, except the model and product appearance line design. Except for the different above, no other modification is performed. Sincerely, Signature:

TYT ELECTRONICS CO., LTD Contact person: Jiamao Lin

TYT ELECTRONICS CO., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-09-22 Subject; Request for Confidentiality FCC ID: POD-DMR1 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely TYT ELECTRONICS CO., LTD Contact person: Jiamao Lin