<s>
Radio	B-General_Concept
modems	I-General_Concept
are	O
modems	B-Application
that	O
transfer	O
data	O
wirelessly	O
across	O
a	O
range	O
of	O
up	O
to	O
tens	O
of	O
kilometres	O
.	O
</s>
<s>
Using	O
radio	B-General_Concept
modems	I-General_Concept
is	O
a	O
modern	O
way	O
to	O
create	O
Private	O
Radio	O
Networks	O
(	O
PRN	O
)	O
.	O
</s>
<s>
Radio	B-General_Concept
modems	I-General_Concept
enable	O
users	O
to	O
be	O
independent	O
of	O
telecommunication	O
or	O
satellite	O
network	O
operators	O
.	O
</s>
<s>
In	O
most	O
cases	O
users	O
use	O
licensed	O
frequencies	O
either	O
in	O
the	O
UHF	O
or	O
VHF	B-Algorithm
bands	I-Algorithm
.	O
</s>
<s>
Typical	O
users	O
for	O
radio	B-General_Concept
modems	I-General_Concept
are	O
:	O
Land	O
survey	O
differential	O
GPS	O
,	O
fleet	O
management	O
applications	O
,	O
SCADA	O
applications	O
(	O
utility	O
distribution	O
networks	O
)	O
,	O
automated	O
meter	O
reading	O
(	O
AMR	O
)	O
,	O
telemetry	O
applications	O
and	O
many	O
more	O
.	O
</s>
