How to set up RT9000D factory Default ?

How to set up RT9000D factory Default ? If your radio seems to be malfunctioning, resetting the microprocessor may solve the probkem. When performing the reset, you may lose memory data and stored information. Back up or write down important data before performing the reset. 1.Press and Hold Key for over 2s to enter general setting…

DMR Dual Band Radio HD1 Contact List

There is a good improvement on HD1 contacts list. It has two parts: priority contacts and Address book contacts. Priority Contacts It can save 1000 priority contacts on HD1. You not only can edit priority contacts through software on computer but also edit the contacts on the radio panel. Press menu, enter contacts operation. You can…

How to programme Retevis RT9000D

How to programme Retevis RT9000D Retevis RT9000D is one of Mobile Car Ham Radio Transceiver, which support VHF and UHF Frequency range, VHF: 66-88/136-174/220-260Mhz and UHF:400-490MHz, Also bigger power at 10-60w. Communicate distance is very longer. Same radio model no. is with same default settings. For Retevis RT9000D, just switch 2 new radios in same channel,…

How to upgrade RT90 firmware

The Retevis RT90 is the latest Dual Band mobile to come on the ham radio scene. It can be compatible with DMR Tier II repeater network as well as local FM repeaters. It was specifically designed with the amateur radio operator in mind. Recently, some customers feedback that RT90 display white screen when operate it. Now,…

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…