The file
\Eagle Dynamics\DCS World Beta\Mods\aircraft\F-16C\Cockpit\Scripts\EWS\RWR\device\RWR_ALR56.lua
references
Aircrafts/F-5E/Cockpit/RWR/
as source for the RWR sounds.
Check if that "bomp...bomp...bomp...." sound is matching the directory reversal of you radar dish (small indicators in the lower edge of the A/A radar. If yes you hear the radar dish.
Is the readabillity of the hud correctly modeled? It's the first plane where I often have the ADI or a HUD repeater on one MFD in cruise mode because I often can't see sh....iny stuff ... on the HUD.
Correct as is?