Different RWR Sounds for different jets

Hi,
I recently started to get into making sound mods and I was wondering how to give different jets
(for example F-15A and SU-27) there own unique RWR sound.
Smilar to how it´s done in [RCSM] (WT Live // Sound by FireXsoldier).
I couldn´t find any information online that´s why Iám asking here.