<s>
Cable-ready	B-Device
is	O
a	O
designation	O
which	O
indicates	O
that	O
a	O
TV	O
set	O
or	O
other	O
television-receiving	O
device	O
(	O
such	O
as	O
a	O
VCR	O
or	O
DVR	B-Application
)	O
is	O
capable	O
of	O
receiving	O
cable	O
TV	O
without	O
a	O
set-top	O
box	O
.	O
</s>
<s>
This	O
gives	O
more	O
channels	O
,	O
and	O
at	O
lower	O
frequencies	O
,	O
so	O
that	O
early	O
systems	O
did	O
not	O
have	O
to	O
be	O
so	O
broadband	B-General_Concept
and	O
were	O
therefore	O
less	O
expensive	O
to	O
build	O
.	O
</s>
<s>
For	O
North	O
American	O
cable	O
television	O
frequencies	O
,	O
the	O
VHF	B-Algorithm
channels	O
2	O
to	O
13	O
are	O
the	O
same	O
,	O
while	O
an	O
extra	O
51	O
cable	O
channels	O
exist	O
between	O
there	O
and	O
over-the-air	O
UHF	O
channel	O
14	O
.	O
</s>
<s>
Conversely	O
,	O
those	O
51	O
extra	O
channels	O
(	O
plus	O
an	O
additional	O
five	O
inserted	O
at	O
95	O
to	O
99	O
)	O
cannot	O
be	O
seen	O
at	O
all	O
on	O
a	O
device	O
which	O
is	O
not	O
cable-ready	B-Device
.	O
</s>
<s>
A	O
"	O
181-channel	O
tuner	B-Device
"	O
receives	O
125	O
on	O
cable	O
(	O
1	O
to	O
125	O
)	O
,	O
plus	O
10	O
(	O
126	O
to	O
135	O
)	O
more	O
for	O
digital	B-Device
cable	I-Device
ready	I-Device
TVs	O
,	O
plus	O
the	O
56	O
(	O
14	O
to	O
69	O
)	O
which	O
are	O
not	O
identical	O
in	O
both	O
(	O
2	O
to	O
13	O
)	O
.	O
</s>
<s>
Other	O
cable	O
channels	O
,	O
0	O
,	O
00	O
and	O
1	O
,	O
which	O
along	O
with	O
channels	O
136-158	O
are	O
ill-defined	O
and	O
thus	O
rarely	O
used	O
,	O
and	O
often	O
not	O
included	O
in	O
otherwise	O
cable-ready	B-Device
tuners	B-Device
.	O
</s>
<s>
Those	O
"	O
lowest	O
numbered	O
"	O
channels	O
often	O
reside	O
between	O
VHF	B-Algorithm
channels	O
four	O
and	O
five	O
on	O
HRC	O
(	O
harmonically	O
related	O
carrier	O
)	O
and	O
IRC	O
(	O
incrementally	O
related	O
carrier	O
)	O
systems	O
where	O
the	O
normally	O
four	O
MHz	O
gap	O
is	O
increased	O
to	O
six	O
MHz	O
,	O
wide	O
enough	O
for	O
one	O
NTSC	O
channel	O
.	O
</s>
<s>
Another	O
use	O
of	O
a	O
cable-ready	B-Device
tuner	B-Device
is	O
for	O
receiving	O
amateur	O
television	O
(	O
ATV	O
)	O
in	O
North	O
America	O
,	O
where	O
the	O
main	O
ATV	O
band	O
appears	O
on	O
cable	O
channels	O
56	O
to	O
59	O
,	O
57	O
being	O
the	O
most	O
popular	O
.	O
</s>
<s>
Digital	O
cable-ready	O
or	O
DCR	O
is	O
a	O
label	O
used	O
by	O
manufacturers	O
on	O
new	O
televisions	O
which	O
feature	O
built-in	O
technology	O
that	O
allows	O
consumers	O
to	O
receive	O
SDTV	B-Device
and	O
HDTV	B-Device
digital	B-Device
cable	I-Device
programs	O
.	O
</s>
<s>
Usually	O
this	O
is	O
a	O
QAM	B-Device
tuner	I-Device
,	O
since	O
over-the-air	O
broadcasts	O
are	O
either	O
COFDM	B-Protocol
(	O
DVB-T	O
and	O
ISDB-T	O
)	O
or	O
8VSB	B-Device
(	O
ATSC-T	B-Device
)	O
.	O
</s>
<s>
Some	O
cable	O
TV	O
systems	O
in	O
North	O
America	O
use	O
16VSB	B-Device
instead	O
of	O
256QAM	B-Device
,	O
for	O
which	O
there	O
are	O
no	O
cable-ready	B-Device
devices	O
.	O
</s>
<s>
Only	O
channels	O
that	O
are	O
left	O
unencrypted	O
can	O
be	O
received	O
using	O
this	O
method	O
,	O
however	O
encrypted	O
channels	O
can	O
be	O
viewed	O
without	O
a	O
set-top-box	O
using	O
systems	O
such	O
as	O
a	O
CableCard	B-Application
or	O
using	O
a	O
Downloadable	B-Device
Conditional	I-Device
Access	I-Device
System	I-Device
.	O
</s>
<s>
Interactive	B-Device
digital	I-Device
cable	I-Device
ready	I-Device
or	O
iDCR	O
extends	O
DCR	O
.	O
</s>
<s>
Unlike	O
the	O
DCR	O
standard	O
,	O
iDCR	O
supports	O
interactive	O
customer	O
features	O
such	O
as	O
electronic	B-Device
program	I-Device
guides	I-Device
,	O
pay-per-view	O
and	O
video	B-Application
on	I-Application
demand	I-Application
.	O
</s>
<s>
Consumer	O
devices	O
which	O
support	O
iDCR	O
also	O
support	O
the	O
new	O
OpenCable	B-Device
Application	I-Device
Platform	I-Device
(	O
OCAP	O
)	O
standard	O
developed	O
by	O
CableLabs	O
.	O
</s>
<s>
In	O
practice	O
however	O
,	O
the	O
rental	O
of	O
cable	O
converter	O
boxes	O
(	O
or	O
since	O
the	O
late	O
2010s	O
,	O
the	O
rent-to-own	O
arrangement	O
of	O
digital	B-Application
media	I-Application
players	I-Application
with	O
a	O
provider	O
's	O
app	O
if	O
the	O
customer	O
prefers	O
)	O
has	O
remained	O
a	O
lucrative	O
business	O
line	O
for	O
most	O
cable	O
providers	O
,	O
and	O
they	O
have	O
preferred	O
to	O
phase	O
out	O
support	O
of	O
analog	O
or	O
digital	O
cable-ready	O
televisions	O
which	O
are	O
not	O
CableCard	B-Application
compliant	O
and	O
rent	O
converter	O
boxes	O
out	O
instead	O
,	O
with	O
prevention	O
of	O
cable	B-Application
theft	I-Application
another	O
reason	O
for	O
the	O
arrangement	O
.	O
</s>
