RT81 DMR Radio & 6-Port Charger & Cable Kit

- Digital/Analog Double Modes
- 2200mAh Large Battery Capacity
- Digital Encryption and Crystal Sound
- 32 Channels (2 Zones)
- Dual Time Slot
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Retevis RT81 Long Range DMR Handheld Radio (UHF/VHF optional) with Six-Way Charger Kit
Retevis RT81 is a long range DMR handheld radio that has two versions available: UHF or VHF optional. UHF two way radios are ideal for city use, and VHF 2-way radios are perfect for outdoor use. This 6-pack radio bundle also includes a convenient six-way charger for efficient charging of multiple radios or batteries at the same time and a programming cable for easily setting functions.
This 6-pack with 6-way chargers is ideal for small, centrally managed groups. It is equipped with a six-way charger capable of charging up to six radios at the same time.
The six chargers are designed to facilitate team management and to avoid individual mistakes. When we centralize the management of the team's equipment, we can better realize the team cooperation and activities.
Main Features of Retevis RT81 DMR Handheld Radio High Power
The maximum power can reach 10W, while the high-gain antenna can provide stronger signal transmission and penetration ability. This allows you to have higher-quality communication.
Digital Communication
The sound quality of digital radio can be better compared to analog walkie-talkie to keep loud and clear and keep good sound quality until the end of the coverage area.
Digital Encryption
Secure communications are an essential requirement, especially for public safety applications. The RT81 is equipped with 10-bit key data encryption; RT81 DMR two way radio prevents eavesdropping and avoids interference to ensure secure communication.
Sturdy Body
In the security process, it often happens that the walkie-talkie falls down by running. Therefore, there are certain requirements for the fall resistance of the walkie talkie. A robust shell with stronger protection against falls and earthquakes is more durable.
Private/Group Call
For security, it is necessary to communicate. The walkie-talkie supports individual and group calls with ID by setting the frequency, time slot, etc. to meet complex communication requirements.
Six Advantages of DMR
DMR technology offers six benefits, including doubling the capacity of existing licensed channels, backward compatibility with legacy systems, longer battery life, and increased energy efficiency that improves working efficiency, extends walkie talkie life, and reduces equipment replacement costs.
Digital radios offer many advantages, including: better voice quality; wider coverage; longer battery life and greater safety; in addition, they are often compatible with analog radios
All Call/Group Call
Allows you to talk to other people at the same time, even if they are not on the same channel
2200mAh rechargeable battery
long run times are no problem; 15 hours in analog mode; 25 hours in digital mode. Out-of-the-box; 16 channels pre-programmed with CTCSS/DCS to minimize unnecessary transmissions.
FAQ on Retevis RT81 Long Range DMR Handheld Radio
Question 1: What is the range of Retevis RT81?
Answer 1: RT81 long range DMR radio can reach 3 miles under ideal conditions. But the actual range may be affected by factors like the terrain, obstacles, weather, etc.
Question 2: Is the encryption of RT81 compatible with other radios?
Answer 2: Besides RT81 DMR radio itself, RT81's encryption can also be compatible with the encryption of the old version RT50 Waterproof DMR Two Way Radio (10 keys).
Question 3: Can RT81 work with RT29?
Answer 3: Yes, RT81 DMR digital 2-way radio can work with the RT29 long range analog two way radio in the analog mode. Since both RT81 and RT29 have VHF or UHF options, at first, you should make sure they have the same band, VHF or UHF. If you want the RT81 to work with the RT29, please ensure they have the same frequency and CTCSS/DCS in the analog mode.
Question 4: What's the benefit of the Dual Time Slot?
Answer 4: RT81 handheld DMR radio supports the Dual Time Slot, which allows two signals to share the same channel at the same time. One on Time Slot 1 and one on Time Slot 2. They do not interfere with each other and improve frequency usage efficiency, which is especially important in areas with busy communications.
What’s in the Box?
- 6 x RT81 DMR Radio (UHF or VHF Optional)
- 1 x Six-Port Multi-Charger
- 1 x Programming Cable
- 6 x 2200mAh Li-ion Battery
- 6 x Adapter and Charger
- 6 x Antenna
- 6 x Belt Clip
- 6 x Sling
Spec
Model | Retevis RT81 |
Frequency | UHF; 400-470MHz / VHF: 136-174MHz |
Mode | Digital/Analog |
Power | 10W |
Channel capacity | 32 (2 Zone, 16 Channel Per Zone) |
Zone | 2 |
Working voltage | 7.4V |
Working temperature | -30℃~+60℃ |
Storage temperature | -40℃~+60℃ |
Continuous working time | Analog mode: 15 hours; Digital mode:25 hours |
Battery capacity | 2200mAh |
Weight (includes battery) | 9.32oz/264g |
Radio size (includes battery) | 5.48x2.51x1.45in (139x64x37mm) |
Receiver | |
Channel spacing | 12.5/25KHz (Digital mode 12.5KHz) |
Frequency stability | ±1.0ppm |
Analog sensibility | 0.35µV/-116dBm (20dB SINAD) |
0.2µV/-120dBm (Typical) | |
Digital sensibility | 0.3µV/-117.4dBm (BER5%) |
0.7µV/-110dBm (BER1%) | |
Spurious response | TIA03C:65dB |
ETSI:65dB | |
Adjacent channel selectivity | TIA603C:60dB@12.5KHz |
ETSI:60dB@12.5KHz | |
Spurious response suppression | TIA603C:70dB ETSI:70dB |
Receiving spurious emissions | ≤57dBm@1GHZ,>-47dBm |
Blocking | 84dB |
Rated audio power | 1W |
Audio response | +1dB—-3dB |
Rated audio distortion | ≤3% |
Transmitter | |
Channel spacing | 12.5/25KHz (Digital mode 12.5KHz) |
Frequency stability | ±1.5ppm |
TX power | Low:1W High:10W |
FM noise | -40dB@12.5kHz |
Spurious emission | ≤36dBm@1GHz,>-30dBm |
Adjacent channel selectivity | -60dB@12.5KHz |
FM modulation mode | 12.5KHz:11FOF3E |
4FSK digital modulation mode | 12.5KHz(data only)7K60FX |
12.5KHz(data+voice)7K60FX | |
Modulation limit | 2.5KHz@12.5KHz |
Audio response | +1dB—-3dB |
Rated audio distortion | ≤3% |
Digital protocol | ETSITSI02361,-1,-3 |
Vocoder type | AMBE+2TM |
Feature
Private call, group call, all call in digital mode
Encryption
Wideband /Narrow band selection
Online update
Busy channel lockout
English and Chinese audio prompt
Time out timer
TX high/Low power selection
Read and write by computer
Digital/analog double modes
32 Channels(2 Zone)
Talk around
Side key programmable
Battery indicator
End-tone elimination
VOX function
Double time slot
Battery save/Low battery alarm
Monitor
Product Reviews
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Darlene Ritterusing rt81 radios for cammpingReviewed on Apr 01,2024My god this is a nice one. Simple but powerful. l got a set of walkie talkie l use it for wild camping. Quite a nice device.Efren JordanGreat purchase!Reviewed on Mar 21,2024radios are good we use in auto salvage yard, they work great on our 10 acre prorerty. They were clear as a bell.