<s>
Remote	B-Application
Radar	I-Application
Head	I-Application
Benbecula	O
or	O
RRH	B-Algorithm
Benbecula	I-Algorithm
,	O
is	O
an	O
air	O
defence	O
radar	B-Application
station	I-Application
operated	O
by	O
the	O
Royal	O
Air	O
Force	O
.	O
</s>
<s>
The	O
radar	B-Application
site	O
was	O
previously	O
known	O
as	O
RAF	O
Benbecula	O
,	O
the	O
name	O
having	O
previously	O
been	O
associated	O
with	O
an	O
RAF	O
airfield	O
on	O
the	O
island	O
of	O
Benbecula	O
(	O
now	O
known	O
as	O
Benbecula	O
Airport	O
)	O
and	O
a	O
nearby	O
weapons	O
testing	O
range	O
(	O
now	O
known	O
as	O
MoD	O
Hebrides	O
)	O
.	O
</s>
<s>
Although	O
Benbecula	O
Airport	O
is	O
now	O
a	O
civilian	O
airfield	O
,	O
a	O
military	O
presence	O
remained	O
and	O
the	O
RAF	O
Benbecula	O
name	O
continued	O
when	O
a	O
radar	B-Application
station	I-Application
was	O
established	O
.	O
</s>
<s>
A	O
control	O
and	O
reporting	O
centre	O
,	O
part	O
of	O
the	O
UK	O
Air	O
Surveillance	O
And	O
Control	O
System	O
(	O
ASACS	O
)	O
,	O
was	O
constructed	O
at	O
the	O
airfield	O
which	O
linked	O
it	O
to	O
RAF	B-Algorithm
Buchan	I-Algorithm
in	O
Aberdeenshire	O
.	O
</s>
<s>
The	O
station	O
was	O
downgraded	O
in	O
the	O
late	O
1990s	O
to	O
a	O
remote	B-Application
radar	I-Application
head	I-Application
and	O
the	O
RAF	O
pulled-out	O
of	O
the	O
main	O
airfield	O
site	O
at	O
Benbecula	O
.	O
</s>
<s>
Initially	O
under	O
the	O
command	O
and	O
control	O
of	O
RAF	B-Algorithm
Buchan	I-Algorithm
,	O
responsibility	O
was	O
transferred	O
to	O
RAF	O
Boulmer	O
in	O
Northumberland	O
in	O
September	O
2004	O
.	O
</s>
<s>
Benbecula	O
operated	O
several	O
radar	B-Application
types	O
until	O
the	O
Type	O
92	O
(	O
more	O
widely	O
known	O
out-with	O
RAF	O
service	O
as	O
the	O
Lockheed	O
Martin	O
AN/FPS	B-Application
-117	I-Application
)	O
came	O
into	O
service	O
in	O
the	O
1980s	O
.	O
</s>
<s>
The	O
Type	O
92	O
was	O
replaced	O
in	O
2015	O
with	O
a	O
new	O
Lockheed	B-Application
Martin	I-Application
AN/TPS	I-Application
-77	I-Application
system	O
.	O
</s>
<s>
The	O
new	O
radar	B-Application
was	O
funded	O
by	O
wind	O
farm	O
developers	O
and	O
was	O
installed	O
in	O
order	O
to	O
help	O
reduce	O
the	O
impact	O
of	O
interference	O
from	O
wind	O
turbines	O
.	O
</s>
<s>
The	O
radar	B-Application
collects	O
data	O
as	O
part	O
of	O
the	O
UK	O
Air	O
Surveillance	O
And	O
Control	O
System	O
(	O
ASACS	O
)	O
based	O
at	O
RAF	O
Boulmer	O
.	O
</s>
<s>
The	O
radar	B-Application
site	O
also	O
accommodates	O
several	O
types	O
of	O
VHF	O
and	O
UHF	O
ground-to-air	O
transmitters	O
.	O
</s>
<s>
Radar	B-Application
Flight	O
(	O
North	O
)	O
of	O
the	O
ASACS	O
Engineering	O
&	O
Logistics	O
Squadron	O
based	O
at	O
RAF	O
Boulmer	O
has	O
command	O
and	O
control	O
of	O
RRH	O
Buchan	O
and	O
ensures	O
its	O
operational	O
availability	O
.	O
</s>
<s>
As	O
part	O
of	O
a	O
major	O
upgrade	O
of	O
RRH	O
sites	O
around	O
the	O
U.K.	O
the	O
MOD	O
began	O
a	O
programme	O
titled	O
HYDRA	O
in	O
2020	O
to	O
install	O
new	O
state	O
of	O
the	O
art	O
communications	O
buildings	O
,	O
radar	B-Application
towers	O
and	O
bespoke	O
perimeter	O
security	O
.	O
</s>
