Ok, i made the radar warning on the xxi work. Turning fumo391 to radar warning and adding a sensor with it to the the xxi .sns file and basic.cfg so you can choose another one so it doesn't get destroyed. Thanks to some old posts and mods.
For anyone interested:
Prepare a mod to enable with jsgme.
Edit with silent editor fumo391 in sensors.dat to an radar warning instead or radar. copy the different values in fumo391 belonging to radar from another radar warning device (sweep etc all of that).
Change min sensor height to something less than 1 like 0.1.
Copy the NSS_Uboat21.sns from this mod:
http://www.subsim.com/radioroom/down...do=file&id=952
That needs to be placed in data\submarine\nss_uboat21\
I don't know if the following step is neccesary but:
edit basic.cfg
search for 1279 and delete that entry the whole of it.
Add this to the end of items in section EQUIP5
NameIdx8=1279
Year8=1943
Month8=12
NbSub8=1
Sub80=3; Type XXI
Renown8=0
Name8=FuMO391
In the same section EQUIP5 change this:
[EQUIP5]; Radar Warning Receiver
DaysSpent=3; 2
Nb=9;;7; zeta/Anvart/Stiebler <----------------- from 8 to 9.
NameIdx0=1280
Year0=1942
Month0=8
NbSub0=4
Sub00=0
Sub01=1
Sub02=2
Sub03=3
Renown0=0; 100
Name0=FuMB1Metox
Save all modified files to your new mod and enable it. Thats it.
AND, don't choose fumo391 in equipment screen choose another one. The device will be added automatically if you want to change the date that becomes available edit the .sns file (search for fumo391).