How to switch voice prompt of radios?

When many people using walkie talkies first time,they may can’t understand how to switch language, sometimes the voice prompt is Chinese,for people who don’t understand Chinese at all,it is very inconvenience.  So how to switch voice prompt so that let us use the walkie-talkies more conveniently,let’s learn this operate together. Take RT22 as an example.…

How to set TOT function of H777S?

H777S is a license-free and stylish radio. it has FRS certification,so it is popular with America. H777S have TOT function,some customer will ask what mean is”TOT”? What role does it have? How can i set this function? Today we will learn what is TOT?And how to set it? What is “TOT”? TOT means “time out timer”. When…

Retevis RT84 Firmware Upgrade

Retevis RT84 is a solid built, dual-band DMR/Analog handheld transceiver that would be a good entry-level radio. It has a hefty feel and slightly larger size,low cost under $95USD.  Today let’s learn how to do RT84 firmware upgrade. Enter DFU mode Press the top sidekey and PTT together, turn on the radio.  The indicator will flash red…

Entry-Level Ham Radio Retevis RT84

Entry-Level Ham Radio Retevis RT84 radio is on sale now! You can buy it from Retevis Official Website: https://www.retevis.com/rt84-dual-band-dmr-radio The features: 1, DCDM function: Dual Capacity Direct Mode. It is a feature which allows two slot operation on simplex. Not only does it offer two slot operation but is also currently the only product which…