Retevis RB22 Semi-keyboard UHF DMR Radio

Support Digital & Analog modes

The RB22 DMR radio has both digital and analog modes. When it is changed to mixed reception mode (promiscuous mode), it will support both analog and digital modes at the same time. In digital mode, it will allow more operations, such as remote kill/stun/activate, single/group/all call, emergency alert, and so on.

Long Standby Time

RB22 rechargeable two way radio comes with a 1900mAh lithium-ion battery, which enables it to have a long standby time. According to the 5, 5, 90-duty cycle, its high power (5W) can be used for about 11 hours and its low power (1W) for about 13 hours.

Hands-Free Operation

The integrated VOX (Voice Operated Exchange) feature enables voice-activated transmission, freeing your hands for other tasks. The included earpieces help improve the sound quality and also ensure the call information privacy. 

Roaming Function

This feature ensures your radio has a steady signal. For example, when you’re driving in the city and there are three repeaters along your way, the radio will automatically change channels to the repeater, which is the strong base station closest to you.

FM Radio Function

FM radio function can you enjoy your favorite programs, music, talk shows, and other audio entertainment during your downtime. 

Recording Function

RB22 DMR radio supports recording and can record up to 90 hours, which allows you to record the important content of the call and listen to the recorded content repeatedly after the call 

SMS Function

Retevis RB22 DMR digital two way radio supports SMS editing and sending, allowing you to easily edit text and send it to other digital two-way radios. 

1.77-inch color screen with semi-keyboard and removable antenna.

The large screen allows users to quickly view information and improve user satisfaction. This was the first amateur computer with a half-keyboard design. Although it was a half-keyboard, the combination of knobs could achieve the effect of a full keyboard.

Up to 4000 Channels and 16 Zones.

The 250 channels are in one zone, and 16 channels with pre-programming frequency in Zone 1. So, users can program all the channels and zones according to their own needs.

Recording Function

RB22 DMR radio supports recording and can record up to 90 hours, which allows you to record the important content of the call and listen to the recorded content repeatedly after the call 

Commercial Use

Support TDMA Mode

The TDMA stands for Time Division Multiple Access. RB22 DMR radio utilizes TDMA to allow several users to share the same frequency channel by dividing that signal into different time slots. Each frequency has a slot 1 or slot 2, and each slot can be used by different users. It can realize two sets of simultaneous communication at the same frequency point, which greatly improves communication efficiency and avoids busy channel and call interference.Users can set and program the DTMF signaling via PC software to disable or enable some advanced function of the radio.