R-4900 Iradio

The iradio R-4900 is a 5W IP67-rated DMR two-way radio built for reliable communication in harsh environments, it delivers stable performance for security, industrial, and outdoor operations.

Functions

Analog Mode: 400–520MHz or 136–174MHz

Digital Mode: 400–470MHz or 136–174MHz

Voice Prompt (Customized Languages)

Timed Lock or Auto-Lock of Keypad

Talk Around and Frequency Reverse

One-click Privacy Decode (Analog Mode)

Low Power Alert

Definable Side-keys

256 Channels, 16 Zones (16 channels per zone)

Emergency Alarm

Scrambler

Scanning

High/Low Power Switching

Definable Side-keys

Power Saving

TOT (Time-Out Timer)

Keypad Lock

Timed Shutdown

DMR Functions

2000 Digital Contact List
256 Receiving Group Lists
256 Group Encryption (ARC/AES-128/AES-256)
Remote Monitor

Product Images

Product Video

Technical Specifications

General

Frequency Range	VHF: 136–174MHz \| UHF: 400–470MHz
Frequency Stability	±2.5PPM
Channel Capacity	256
Operating Voltage	7.4V DC
Antenna	Rubber antenna
Antenna Impedance	50Ω
Work Mode	Same frequency simplex / Different frequency simplex
Ground Method	Negative Electrode
Channel Spacing	Analog: 12.5KHz / 25KHz \| Digital: 12.5KHz
Working Temperature	-20°C ~ +60°C
Frequency Stability (Tolerance)	±2.5PPM
Dimension	137 × 61 × 36mm
Weight	245g
Battery Capacity	2000mAh

Transmitting

RF Power Output	5W
Modulation Type	Analog: F3E \| Digital: 4FSK
Modulation Limitation	≤ 5%
Max Frequency Deviation	≤ 5KHz / ≤ 2.5KHz
FM Noise	≤ -45dB
Spurious Radiation	< -6dB
Pre-emphasis Characteristic	6dB
Frequency Characteristic	±3dB
Signal Noise Ratio	40dB
Digital Protocols	ETSI-TS 102 361-1/-2/-3

Receiving

Sensitivity	0.22uV (12dB SINAD) \| 0.25uV (12dB SINAD)
Selectivity	55dB
Adjacent Channel Selectivity	> 70dB
Noise Respond	> 60dB
FM Noise	45dB / 40dB
Modulation Type	F3E
Audio Distortion	< 5%
Intermodulation	65dB / 60dB
Standby Current	< 70mA

SIRIM Approved