This kit adds 6 free batteries. This kit is designed for teams that need to work for long periods of time and have no way to recharge their batteries in a timely manner, such as summer camps, construction sites, and so on. Long hours of work can be a huge challenge to battery life, so choosing a kit with extra batteries can be a great solution to this concern!
Able to do a good job of adapting to bad weather (rain and snow) and harsh environments (water and dust) and other environments.
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.
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.
Secure communications are an essential requirement, especially for public safety applications, RT81 is equipped with 10-bit key data encryption, walkie talkie prevents eavesdropping and avoids interference to ensure secure communication.
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.
For security, it is necessary to communicate. The walkie-talkie supports individual and group call with ID, by setting the frequency, time slot, etc. to meet complex communication requirements.
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
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.
Model | Retevis RT81 |
Frequency | UHF 400-470MHz |
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:15 hours,Digital:25 hours |
Battery capacity | 2200mAh |
Weight(include battery) | 9.32oz/264g |
Radio size(include 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 |
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