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,…