The high-performance, yet simple-to-use TM-628H mobiles are created to give you the immediate, reliable communication you need to keep mobile teams working efficiently. HYT’s Voice compander audio enhancement and a powerful 5W internal or 13W external speaker ensure superb clear, crisp sound ,even in noisy enviorments. It’s compact design makes these radios ideal when mounting space is a constraint.
High-output Power
TM-628H offer you higher out-put power 50W(VHF)/45W(UHF) than other T6 series of HYT. Ensuring you long-distance communication requirement.
DTMF Encoder-decoder
The DTMF function conclude DTMF ANI, flexible dialing. Customized, user friendly number storage can be used for your most often called numbers. TM-628H can also the function of DTMF decoder(optional).
Robust Audio
TM-628H has unique voice cavity design on configuration. Besides, voice compander audio enhancement and a powerful 13W external speaker will provide superb clear, crisp sound, even in noisy environments.
Over-heating Protection
In case of long time transmission at high power, the TM -628H will automatically switch to low output power to avoid radio over-heating.
Built-in Scrambler
Maintaining private and secure communications is increasingly important, with potentially sensitive information flowing back and forth. The scrambler feature provides enhanced security for your important and private communication.
HDC2400TM and HDC1200 signaling
The HDC2400TM signaling is exclusive to HYT, and contributes to the system to achieve features including ANI (Automatic Number Identification), Individual Call, Group Call, Broadcast, Stun, Short Message and Data Transmission.
The HDC1200 Signaling is compatible with MDC1200, and allows functions including PTT ID Encode, Emergency Encode, Radio Check Decode, Stun& Revive, Individual Call, Group Call and Broadcast.

Automatic Number Identification (ANI)
After HDC2400 or HDC1200 signaling is received, the radio will display the ID or alias of the other party. The radio firmware supports a selective call list containing up to 128
Built-in modem
The built-in 1200/2400bps MSK modulator offers data transmission capability.*
Emergency alarm
The emergency button allows for a transmission of a signal indicating an emergency situation.
Stun and revive
The stun function permits an authorized radio to remote disable another lost radio. This function can ensure you higher security and is perfect for the radio rental business.
A stunned radio will return to operational use when the revive code is received.
Public Address (PA)
The public address feature feeds microphone audio through a powerful PA amplifier to the external speaker, offering robust, out of vehicle, audio clarity.
Large 15-Segment LCD Display
Users may toggle the display to channels or zones, auto dial numbers or other functional settings. The keypad and display illuminates to provide visibility for night time operation.
128 Channels and Dynamic Regrouping
The 128 channel and zoning capability of the TM-628H offers flexibility in organizing work groups. Each channel and zone can be assigned a user friendly name for easy identification. Dynamic regrouping offers flexibility in a changing work group environment.
Lone Worker
The lone worker feature provides added security and safety for individuals who work remotely from their team. Since this function is enabled, the radio will emit an alert tone after the preset time elapses, then the user must press any key, otherwise the emergency procedure will be activated.
Ignition Sense, Timed Power Off
When this function is enabled, you have to connect the ignition wire to the rear panel of the radio so that you can turn on/off the radio by igniting/stalling the car. The radio can only be turned on by igniting the car and will be turned off automatically within the preset time after the car stalls.
Versatile Scan
The TM-628H scan allows for single or multiple zone scanning. Scanning features include add / delete scan channels, nuisance channel delete and user selectable priority channel.
Wired Cloning / MSK Wireless Cloning
Allows users to quickly and easily duplicate one radio’s parameters into another radio.
UST (User Selectable Tone)
The user can select CTCSS/CDCSS codes via the programmed function key.

General
Frequency Range		136-174MHz    400-470MHz
Channel Capacity		128
Zone Capacity		16
Channel Spacing		25/20/12.5KHz
Operating Voltage		13.6V DC ±15%
Current Drain	Standby	0.5A
	Receive	<2.0A
	Transmit	12A (50W/45W)/< 5A (5W)
Frequency Stability		±2.5ppm
Operating Temperature		-30℃~+60℃
Antenna Impedance		50Ω
Dimensions (W×H×D)		154 X 48 X 161mm
Weight		1Kg
Transmitter
RF Power Output		45W /50W
Modulation		16KΦF3E/11KΦF3E
Spurious and Harmonics		< -23dBm
FM Noise		>45dB (25/20KHz) >40dB (12.5KHz)
Audio Distortion		≤3%
Receiver
Sensitivity		0.28 μV
Selectivity		75/65dB
Intermodulation		70
Spurious Response Rejection		70
S/N (wide/medium/narrow)		>45dB (25/20KHz) >40dB (12.5KHz)
Internal Audio Power Output (Rated)		5W (less than 5% distortion) 3W (less than 3% distortion)
External Audio Power Output (Rated)		13W (less than 5% distortion) 12W (less than 3% distortion)

Applicable Military Standards 810C/D/E/F

Applicable MIL-STD	810C Methods   Procedures	810D Methods   Procedures	810E Methods   Procedures	810F Methods   Procedures
Low Pressure	500.1      1	500.2      1,2	500.3      1,2	500.4      1
High Temperature	501.1     1,2	501.2      1,2	501.3      1,2	501.4     1,2
Low Temperature	502.1      1	502.2     1,2	502.3      1,2	502.4      1,2
Temp. Shock	503.1      1	503.2      1	503.3      1	503.4      1
Solar Radiation	505.1      1	505.2      1	505.3      1	505.4     1,2
Rain	506.1      2	506.2      2	506.3      1,2	506.4      1,2
Humidity	507.1      2	507.2      2,3	507.3      2,3	507.4      1
Salt Fog	509.1      1	509.2      1	509.3      1	509.4      1
Dust	510.1      1	510.2     1	510.3      1	510.4      1
Vibration	514.2     8,10	514.3      1	514.4      1	514.5      1
Shock	516.2     1,2,5	516.3      1,4	516.4     1,4	516.5      1,4