Can walkie-talkies of different brands communicate with each other through frequency modulation?

The frequency modulation of the walkie-talkie means to adjust to the same frequency. Only when the frequency is the same, can the two walkie-talkies communicate with each other. There are two types of walkie-talkies: computer FM and manual FM. Computer FM should be connected to the computer with a special connection line, and the frequency you need should be rewritten with special frequency writing software. Manual frequency modulation means that there are number buttons on the panel of the walkie-talkie, and you can write the frequency you need by directly inputting numbers. However, different brands, models and microphone for walkie talkie have different FM methods and steps. It can be operated according to the specific brand model.