A dual band radio is a two way radio that is designed to allow operation on two separate frequency bands. This operation can be one of many types of transmission and reception arrangements depending on the capabilities of the individual radio.

Dual band radios allow for communications on the VHF (very high frequency) and UHF (ultra high frequency) bands in the electromagnetic (EM) spectrum. Normally for amateur band, the VHF band is called the “2 meter band” and ranges from 144 MHz to 148 MHz, but The UHF band is called the “70 centimeter band” and ranges from 420 to 450 MHz, but the radio often sets VHF136-174MHz and UHF 400-480MHz or 450-520MHz.:30

VHF and UHF both has their advantage on communication , In open mountains and plains, it is recommended to use VHF band walkie-talkies, which can give full play to the long-distance propagation characteristics; in densely populated cities, it is recommended to use UHF band walkie-talkies.

For example ,Chierda X2UV Walkie Talkie, this is our latest dual band two way radio, it gives VHF136-174MHz and UHF400-480MHz on Transmitting and Receiving , and it also has FM radio broadcasting receiving function . If you want to buy radios to use , but not very sure where will be use,  then you had better choose a dual band radio.