@BlindJedi what do you mean turn off individual radars? there is the main radar that sounds like honks and sweeps back and forward in front of you showing objects, which can be turned off with the F5 key. There is then the scanner beam which changes to a foe indicator when you can shoot something which just shows what's ahead of you, there are then the main beacon sounds for freeports which help you navigate, and lastly the enemy beacon which tracks an attacking ship for you.
So, I'm not sure which thing you would want to turn off here exactly?
I will say until your used to using the radar, you should probably toggle it off in combat since combat can get crowded with cargo crates etc.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)