HD1 remote kill and wake up function

Under remote kill function one can neither hear(receiving signals), nor transmitting. Some of our customers say they never use remote kill function on their DMR radio. Because they do not want anyone kill them whether it is intentional or unintentional. But for HD1 remote kill function, you can operation through software to choose remote kill or […]

Working principle of Retevis RT9550 repeater

Working principle of Retevis RT9550 repeater   Retevis RT9550 repeater expand of the radio signal transmission distance by resending or forwarding the radio signal. Retevis RT9550 Repeater main work principle: a high-sensitivity receiver is responsible for receiving signals from different stations at a frequency point, and at the same time, a high-power transmitter is used another frequency […]

Short Review of RT90 dual band mobile radio

Finally the announced package arrived. Content: the new RETEVIS Duoband DMR mobile device RT90.  Now everything was unpacked and inInspected. Also a programming cable was included. RT90 Unboxing Finally the announced package arrived. Now everything was unpacked and inInspected. Also a programming cable was included.  The microphone makes a solid impression and has a pretty good workmanship. It should be […]

Win Retevis Hat for Amateurs

Amateur radios (also called ham radio),describes the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication. The term “amateur” is used to specify “a duly authorised person interested in radioelectric practice with a purely personal aim and without pecuniary interest;”(either direct monetary or other similar reward) and to differentiate it from commercial broadcasting, public safety […]