Retevis RT97S GMRS Repeater, RT97 Upgraded Version, Radio Repeater, Full Duplex Long Range, Compatible with Raspberry Pi, Portable, LCD Screen(1 Pack)

RT97S vs RT97; RT97S has a DB-9 female connector; which can be directly connected to the microphone and is compatible with Raspberry Pi; enabling multiple RT97S repeaters to be interconnected to extend the communication distance (additional components are not included in the package)

‌Channel switching; long press the button for three seconds to switch channels; if you need to adjust the volume; try to press the button briefly GMRS radio base station; 8 default GMRS channels; Compatible with RT76; RT76P; RB26, etc.; If you need customized frequency; please contact us via Amazon email Extend the distance; RT97S helps to connect emergency calls outside the range of the walkie talkies; and is suitable for outdoor activities; remote mountainous areas; large-scale farms; towns communications; etc Built-in duplexer; can receive and transmit signals at the same time; only needs one antenna to transmit walkie-talkie signals; the package does not include the antenna; need to pay attention to some power losses caused by the duplexer Sturdy and durable; the shell is made of all-aluminum alloy; which is resistant to falling and has good heat dissipation effect; it has little loss in daily use and supports long-term use Compact and portable; the mini GMRS base station supports mobile or simple installation; it can be placed in the car as a substitute for the on-board transceiver; it can also be fixed on the roof or mountain