<s>
During	O
the	O
day	O
,	O
fighters	O
would	O
be	O
directed	O
with	O
sufficient	O
precision	O
for	O
them	O
to	O
come	O
into	O
visual	O
contact	O
with	O
their	O
targets	O
,	O
while	O
during	O
the	O
night	O
they	O
would	O
use	O
their	O
onboard	O
Airborne	B-Device
Interception	I-Device
radar	I-Device
to	O
find	O
the	O
target	O
after	O
initial	O
direction	O
from	O
the	O
ground-based	O
radars	O
.	O
</s>
<s>
Lichtenstein	O
B/C	O
-	O
FuG	O
202	O
:	O
Low-UHF	O
band	O
frequency	O
range	O
,	O
introduced	O
in	O
1941	O
it	O
was	O
the	O
initial	O
AI	B-Device
radar	I-Device
.	O
</s>
