[Doubts] Radio frequency in voice

[Mature]

Hello, I have a doubt that I have no idea to execute, I would like to create a radio frequency system, along with the voice, after the player pressing 'Z', he will speak normally in the voice and when pressing, for example, ' X 'he will speak in the voice of the radio or in the key configured as Tokovoip, is it possible? How can I do? you don't need to give me the script by hand, just tell me what to use. Thank you in advance