There should be a option in game for rwa sounds who agrees? that the standard 1 is old and sometimes annoying in real life most radar warning sounds sound completely different there should be a set of options available per aircraft just like for example tanks have optional gunner crosshairs as well on top of radar sounds we should have crosshairs available for helicopters and jets fully accessible just like ground vehicle option menu
If you want to create a suggestion you can do so in the suggestion section here on the forum. That section is however pre-moderated and only posts that follow their rules and guidelines will get posted and it can take a couple of weeks for a post to get reviewed for publication. If it gets accepted and made public it then has a chance to get sent to the developers as a suggestion later on.