<s>
Colorado	O
State	O
University	O
-	O
CHicago	O
ILLinois	O
radar	O
,	O
colloquially	O
CSU-CHILL	B-Algorithm
,	O
is	O
a	O
semi-mobile	O
,	O
dual-frequency	O
weather	B-Application
surveillance	I-Application
radar	I-Application
developed	O
in	O
1970	O
by	O
the	O
University	O
of	O
Chicago	O
and	O
the	O
Illinois	O
State	O
Water	O
Survey	O
,	O
which	O
has	O
since	O
been	O
moved	O
to	O
Colorado	O
on	O
behalf	O
of	O
Colorado	O
State	O
University	O
.	O
</s>
<s>
CSU-CHILL	B-Algorithm
is	O
used	O
to	O
study	O
atmospheric	O
principles	O
and	O
precipitation	O
on	O
a	O
small	O
scale	O
with	O
the	O
use	O
of	O
two	O
frequencies	O
.	O
</s>
<s>
It	O
has	O
a	O
transmitter	O
consisting	O
of	O
both	O
S	B-Algorithm
and	O
X-bands	B-Algorithm
,	O
both	O
using	O
a	O
klystron	O
.	O
</s>
<s>
CSU-CHILL	B-Algorithm
is	O
protected	O
by	O
a	O
pneumatic	O
dome	O
,	O
and	O
is	O
close	O
to	O
its	O
control	O
buildings	O
.	O
</s>
