What?? No one has even tryed to edit the radiation levels????

Never walk into No Man's land in a chicken suit.

i wish i could help but i cant lol sry im sure ppl have attempted it

Mess With the Best Die lIke the Rest

This ones for you
Lancers Reactor: Your Guide to the Galaxy
... However, Beryllium was discovered to be extraordinarily effective at absorbing neutron
radiation, and has since become a key component in the construction of ...
www.lancersreactor.com/t/flcommodity/default.asp - 55k - Cached - Similar pages

Lancers Reactor: Your Guide to the Galaxy
... enough shields and a lot of good luck, you could rake in the credits scavenging
wrecks that had been disabled in the intense radiation fields surrounding the ...
www.lancersreactor.com/t/features/journals.asp - 51k - Cached - Similar pages

Lancers Reactor: Where Simulation is only the Beginning
... Zoners have since taken command of the base, keeping radiation sickness at bay
with pharmaceuticals. If you find any errors, please tell us! <<< Back. ...
www.lancersreactor.com/t/flsystems/ details.asp?System=Omega-41 - 27k - Cached - Similar pages

Lancers Reactor: Fuel for the Flight
... I see a medium small yellow star without too much radiation, a couple of gas giant
planets further out and just one small planet close in which happens to be ...
www.lancersreactor.com/t/static/gator.asp - 56k - Cached - Similar pages

Here is part of the BW04.ini, omega 11 (decompressed with BINI)

This is the background radiation that is felt throughout the system:
[zone
nickname = Zone_Bw04_system_radiation
pos = -124, 0, 388
shape = SPHERE
size = 40000
damage = 15
sort = 99.500000

See the line that say's damage = 15, this controls how much damage the player ship takes (im not sure how you tell it that its radiation damage)

Here is the part that controls the highly radioactive part near the sun:

[zone
nickname = Zone_Bw04_Abstand
ids_name = 261309
pos = -243, 0, 513
rotate = 15, 0, 0
shape = SPHERE
size = 21000
damage = 220
ids_info = 66001
spacedust = leedsdust
spacedust_maxparticles = 125
sort = 99

notice how the damge is much higher

If you don't know the zone name, you can always look it up in Freelancer Explorer.

Hope this helps