Some of Retevis walkie tlakie have the “Talk Permit Tone” and “Hang Over Tone” function.
So what is the “Talk Permit Tone” and “Hang Over Tone” function?
The Retevis RT80 is a DMR handheld walkie-talkie designed on the basis of Time Division Multiple Access (TDMA) technology. It supports three modes: digital, analog and digital-analog mixed and is compatible with existing conventional analog and DMR-based walkie-talkies. Retevis RT80 is working at UHF 400-480MHz, 999 channels, transmit power of 5W, vocoder type AMBE ++, […]
Retevis RT80 is a new DMR radio in 2018, which has 999 channels, UHF frequency from 400Mhz to 480Mhz. 1600mAh Li-ion battery, digital and analog mode combined. Can talk to Motorola Radios. Retevis RT80 Technical Spectifications Transmitter Receiver Output Power 4.5W/1.5W Sensitivity (analog) ≤0.3/0.22 μV（12dB SINAD） Modulation(analog) 11KΦF3E@12.5KHz; 16KΦF3E@25KHz Sensitivity (digital) ≤0.3 μV/BER 5% Modulation (digital) 12.5KHz (data +voice):7K60FXW; 12.5KHz(data only):7K60FXD ACS ≥65dB Spurious emission -36dBm<1GHz; -30dBm>1GHz Intermodulation ≥65dB […]