Commercial digital mobile radio, LCD display

The MD622i is a cost-effective DMR mobile radio that delivers value with extensive features. Providing long-range transmission, robust design, and clear voice transmission, this compact mobile radio can be used in a variety of applications.

MD622i Mobile Radio Applications
• School Transportation
• Towing
• Taxis
• Ambulance and EMT
• Agriculture
• Construction
• Delivery Services

Our state-of-the-art communication solutions can provide everything your business needs to grow. Learn more on how Cardinal Communications can develop a customized solution for your business needs! Contact Us!


High Quality Audio

Audio equalizer adjusts low, mid, and high frequency gain. Provides the best audio performance in noisy or quiet environments

Dual Mode

Operating in Analogue and Digital mode to aid your migration from Analogue to Digital two-way radio technology.

GPS (Optional Accessory)

Enables real-time location tracking for dispatch applications (requires external GPS module and GPS antenna)

Bluetooth Audio (Optional)

Wireless connectivity to audio devices to improve user experience.

Reliable and Durable

The MD622i is compliant with MIL-STD-810 G for impact strength and durability, and IP54 water and dust ingress

MD625 1

Increased Coverage Range

With a high RF power output up to 50W, the MD612i dramatically extends communication range

Analog & Digital Auto-Detect

Simultaneously monitors analog and digital modes and automatically responds in each mode

Analog Signaling

Supports HDC1200 signaling for Caller ID and Emergency Calls in analog mode, and is compatible with MDC1200 signaling used by other analog radios. The MD622i can decode DTMF tones while in analog mode for Caller ID signaling

Pre-Programmed Text Messaging

One-touch sending of up to ten pre-programmed text messages

Emergency Alarms

Emergency Alarms can be sent to other radios via the one touch emergency button. mproves worker safety and emergency

Systems and Network


This feature enables the radio to switch between sites, ensuring seamless communication.

Pseudo Trunking

Using pseudo-trunking, a Hytera patented technology, communication slots can be shared to improve capacity usage with transmissions either direct to devices or to repeater.

Digital Encryption

Ensure your radio transmissions are secure with end-to-end encryption


The MD622i can be deployed on DMR Tier II systems

Radio Registration Service

RRS allows the MD622i to communicate with dispatch and unified communications applications

Technical Specifications


Frequency Range
UHF: 400-470 MHz* VHF: 136-174 MHz
Channel Capacity
256 Channels (128 Analog, 128 Digital)
Zone Capacity
16 Zones with 16 Channels per Zone
Channel Spacing
Operational Voltage
13.6 V ±15%
1100g (2.4 pounds)
6 15/32” x 1 11/16” x 1 15/16” (164 x 43 x 150 mm)
Frequency Stability
± 0.5ppm
Antenna Impedance
LCD Display
128x64 pixels, 1.5 inch, 4 lines


Digital Sensitivity
0.3µV (BER 5%)
Analog Sensitivity
0.22µV (Typical) (12dB SINAD) 0.4µV (20dB SINAD) 0.3µV (12dB SINAD)
Adjacent Selectivity
TIA-603: 60dB @ 12.5kHz, 70dB @ 25kHz ETSI: 60dB @ 12.5kHz, 70dB @ 25kHz
Spurious Response Rejection
TIA-603: 70dB @ 12.5/25kHz ETSI: 70dB @ 12.5/25kHz
TIA-603: 70dB @ 12.5/25kHz ETSI: 65dB @ 12.5/25kHz
Hum and Noise
40dB @ 12.5kHz, 45dB @ 25kHz
Rated Audio Power Output
Internal (@ 16 ohm load): 4W External (@ 8 ohm load): 8W
Max. Audio Power Output
Internal (@ 16 ohm load): 6W External (@ 8 ohm load): 12W
Rated Audio Distortion
Audio Response
+1 to -3dB
Conducted Spurious Emission


RF Power Output
VHF High Power: 5-50W UHF High Power: 5-45W
FM Modulation
11K0F3E @ 12.5kHz 16K0F3E @ 25kHz
4FSK Digital Modulation
12.5kHz Data Only: 7K60FXD 12.5kHz Data and Voice: 7K60FXW
Conducted/Radiated Emission
-36dBm <1GHz / -30dBm >1GHz
Modulation Limiting
±2.5kHz @ 12.5kHz ±5.0kHz @ 25kHz
FM Hum and Noise
40dB @ 12.5kHz, 45dB @ 25kHz
Adjacent Channel Power
60dB @ 12.5kHz, 70dB @ 25kHz
Audio Response
+1 to -3dB
Audio Distortion
Digital Vocoder Type
Digital Protocol
ETSI-TS102 361-1,-2,-3


Operating Temperature
22oF to +140oF (-30oC to +60oC)
Storage Temperature
-40oF to +185oF (-40oC to +85oC)
IEC 61000-4-2 (Level 4)±8kV Contact, ±15kV Air
Dust and Water Ingress
IP54 Standard
Per MIL-STD-810 C/D/E/F/G Standard
Shock and Vibration
Per MIL-STD-810 C/D/E/F/G Standard
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