There are three regional IARU organizations corresponding to the three ITU Radio Regions:
Region 1 — Africa, Europe, Middle East, and northern Asia;
Region 2 — the Americas;
Region 3 — the rest of Asia and the Pacific;
On Ailunce HD2, we default set to VHF144-146Mhz, and UHF 430-440Mhz, this follows the IARU regions 1.2.3 frequency. and we also set a switch operation on the radio. When the radio is off, Press [MENU]+6,turn on the radio. enter the password:654321.
