<s>
Frequency	B-Device
deviation	I-Device
(	O
)	O
is	O
used	O
in	O
FM	B-Application
radio	I-Application
to	O
describe	O
the	O
difference	O
between	O
the	O
minimum	O
or	O
maximum	O
extent	O
of	O
a	O
frequency	B-Application
modulated	I-Application
signal	O
,	O
and	O
the	O
nominal	O
center	O
or	O
carrier	O
frequency	O
.	O
</s>
<s>
The	O
frequency	B-Device
deviation	I-Device
of	O
a	O
radio	O
is	O
of	O
particular	O
importance	O
in	O
relation	O
to	O
bandwidth	B-Algorithm
,	O
because	O
less	O
deviation	O
means	O
that	O
more	O
channels	O
can	O
fit	O
into	O
the	O
same	O
amount	O
of	O
frequency	O
spectrum	O
.	O
</s>
<s>
The	O
FM	B-Application
broadcasting	O
range	O
between	O
87.5	O
and	O
108MHz	O
uses	O
a	O
typical	O
channel	O
spacing	O
of	O
100	O
or	O
200kHz	O
,	O
with	O
a	O
maximum	O
frequency	B-Device
deviation	I-Device
of	O
+	O
/	O
-75kHz	O
,	O
in	O
some	O
cases	O
leaving	O
a	O
buffer	O
above	O
the	O
highest	O
and	O
below	O
the	O
lowest	O
frequency	O
to	O
reduce	O
interaction	O
with	O
other	O
channels	O
.	O
</s>
<s>
The	O
most	O
common	O
FM	B-Application
transmitting	O
applications	O
use	O
peak	O
deviations	O
of	O
+	O
/	O
-75kHz	O
(	O
100	O
or	O
200kHz	O
spacing	O
)	O
,	O
+	O
/	O
-5kHz	O
(	O
15	O
–	O
25kHz	O
spacing	O
)	O
,	O
+	O
/	O
-2.5kHz	O
(	O
3.75-12.5kHz	O
spacing	O
)	O
,	O
and	O
+	O
/	O
-2kHz	O
(	O
8.33kHz	O
spacing	O
,	O
7.5kHz	O
spacing	O
,	O
6.25kHz	O
spacing	O
or	O
5kHz	O
spacing	O
)	O
.	O
</s>
