<s>
A	O
radar	B-Algorithm
tower	I-Algorithm
is	O
a	O
tower	O
whose	O
function	O
is	O
to	O
support	O
a	O
radar	B-Application
facility	O
,	O
usually	O
a	O
local	O
airport	O
surveillance	O
radar	B-Application
,	O
and	O
hence	O
often	O
at	O
or	O
in	O
the	O
vicinity	O
of	O
an	O
airport	O
or	O
a	O
military	O
air	O
base	O
.	O
</s>
<s>
In	O
addition	O
,	O
radar	B-Algorithm
towers	I-Algorithm
are	O
used	O
for	O
the	O
installation	O
and	O
operation	O
of	O
search	O
and	O
height	O
finder	O
radars	B-Application
at	O
military	O
radar	B-Application
stations	I-Application
where	O
the	O
mission	O
is	O
to	O
support	O
air	O
defense	O
missions	O
.	O
</s>
<s>
For	O
regional	O
air	B-Application
traffic	I-Application
control	I-Application
,	O
en	O
route	O
radar	B-Application
installations	O
are	O
used	O
;	O
for	O
example	O
there	O
are	O
six	O
of	O
these	O
in	O
Germany	O
,	O
erected	O
at	O
selected	O
sites	O
.	O
</s>
<s>
The	O
data	O
from	O
these	O
radars	B-Application
is	O
fed	O
into	O
the	O
civilian	O
RADNET	O
system	O
and	O
transferred	O
to	O
all	O
civil	O
and	O
military	O
control	O
centres	O
.	O
</s>
<s>
Ideally	O
a	O
radar	B-Algorithm
tower	I-Algorithm
is	O
built	O
on	O
a	O
high	O
spot	O
in	O
the	O
terrain	O
,	O
because	O
this	O
reduces	O
the	O
angle	O
of	O
elevation	O
and	O
thus	O
increases	O
the	O
range	O
of	O
the	O
radar	B-Application
device	O
.	O
</s>
<s>
In	O
the	O
absence	O
of	O
a	O
suitable	O
high	O
spot	O
,	O
radar	B-Algorithm
towers	I-Algorithm
are	O
used	O
.	O
</s>
<s>
In	O
Germany	O
the	O
operational	O
command	O
posts	O
of	O
the	O
German	O
Air	O
Force	O
use	O
the	O
Bundeswehr	O
radar	B-Algorithm
towers	I-Algorithm
for	O
the	O
stationary	O
radar	B-Application
sites	O
of	O
the	O
operational	O
command	O
areas	O
.	O
</s>
<s>
Military	O
radar	B-Application
stations	I-Application
have	O
supported	O
US	O
and	O
allied	O
air	O
defense	O
operations	O
at	O
numerous	O
worldwide	O
locations	O
since	O
World	O
War	O
II	O
.	O
</s>
<s>
The	O
largest	O
network	O
of	O
military	O
radar	B-Application
stations	I-Application
evolved	O
during	O
the	O
Cold	O
War	O
era	O
to	O
support	O
the	O
air	O
defense	O
of	O
North	O
America	O
as	O
part	O
of	O
the	O
joint	O
US	O
and	O
Canadian	O
command	O
known	O
as	O
the	O
North	O
American	O
Air	O
Defense	O
Command	O
(	O
NORAD	O
)	O
.	O
</s>
<s>
This	O
military	O
radar	B-Application
network	O
became	O
automated	O
in	O
1960	O
with	O
the	O
operation	O
of	O
SAGE	O
.	O
</s>
<s>
Long	O
Range	O
Radar	B-Application
(	O
LRR	O
)	O
stations	O
were	O
electronically	O
connected	O
to	O
SAGE	O
Direction	O
Centers	O
(	O
DCs	O
)	O
.	O
</s>
<s>
This	O
resulted	O
in	O
an	O
integrated	O
air	O
defense	O
system	O
made	O
up	O
of	O
radar	B-Application
,	O
radio	O
,	O
interceptor	O
aircraft	O
,	O
antiaircraft	O
guns	O
and	O
missiles	O
,	O
and	O
command	O
and	O
control	O
(	O
C2	O
)	O
facilities	O
.	O
</s>
<s>
Most	O
of	O
the	O
radar	B-Application
and	O
radio	O
facilities	O
were	O
not	O
on	O
a	O
military	O
air	O
base	O
,	O
but	O
smaller	O
Air	O
Force	O
Stations	O
(	O
AFS	O
)	O
usually	O
located	O
in	O
rural	O
and	O
often	O
isolated	O
locations	O
often	O
miles	O
away	O
from	O
even	O
small	O
towns	O
.	O
</s>
<s>
An	O
online	O
radar	B-Application
museum	O
provides	O
descriptions	O
of	O
military	O
radar	B-Application
stations	I-Application
at	O
radomes.org/museum	O
.	O
</s>
<s>
Photographs	O
of	O
radar	B-Algorithm
towers	I-Algorithm
and	O
radomes	O
are	O
provided	O
.	O
</s>
<s>
This	O
includes	O
the	O
AN/FPS	O
-24	O
search	O
radar	B-Algorithm
tower	I-Algorithm
in	O
a	O
huge	O
64	O
foot	O
square	O
,	O
85	O
foot	O
tall	O
,	O
five	O
story	O
building	O
.	O
</s>
<s>
On	O
top	O
of	O
this	O
radar	B-Algorithm
tower	I-Algorithm
was	O
a	O
radar	B-Application
antenna	O
50	O
feet	O
tall	O
,	O
120	O
feet	O
wide	O
,	O
weighing	O
85.5	O
tons	O
and	O
rotating	O
at	O
5	O
rpm	O
.	O
</s>
