Rotel RT-970BX User manual
RO
ТЕ
5
AM/FM
STEREO
TUNER
RI-970BX
Owners
manud
WARNING
TO
PREVENT
FIRE
OR
SHOCK
HAZARD,
DO
NOT
EXPOSE
THIS
APPLIANCE
TO
RAIN
OR
MOISTURE.
Write
your
SERIAL
NUMBER
here.
The
number
is
located
near
the
name
plate
on
the
rear
panel.
SAFETY
INSTRUCTION
1.
Read
Instructions—
All
the
safety
and
operating
instructions
should
be
read
before
the
appliance
is
operated.
2.
Retain
Instructions—
The
safety
and
operating
instructions
should
be
retained
for
future
reference.
3.
Heed
Warnings—All
warnings
on
the
appliance
and
in
the
operating
instructions
should
be
adhered
to.
4.
Follow
Instructions—
All
operating
and
use
instructions
should
be
followed.
5.
Water
and
Moisture—
The
appliance
should
not
be
used
near
water
-
for
example,
near
a
bathtub,
washbowl
kitchen
sink,
laundry
tub,
in
a
wet
basement,
or
near
a
swimming
pool,
and
the
like.
6.
Carts
and
Stande—the
appliance
should
be
used
only
with
a
cart
or
stand
that
is
recommended
by
the
manufac-
turer.
6A.
An
appliance
and
cart
combination
should
be
moved
with
care.
Quick
stops,
excessive
force,
and
uneven
surfaces
may
cause
the
appliance
and
cart
combination
to
overturn.
7.
Wall
or
Ceilling
Mounting—
The
ap-
pliance
should
be
mounted
to
a
wall
or
ceilling
only
as
recommended
by
the
manufacturer.
8.
Ventilation—The
appilance
should
be
situated
so
that
its
location
or
position
does
not
interfere
with
its
proper
ventilation.
For
example,
the
appliance
should
not
be
situated
on
a
bed,
sofa,
rug,
or
similar
surface
that
may
block
the
ventilation
openings;
or
placed
in
a
built-in
installation
such
as
a
bookcase
or
cabinet
that
may
impede
the
flow
of
air
through
the
ventilation
openings.
9.
Heat—
The
appliance
should
be
situated
away
from
heat
sources
such
as
radiators,
heat
registers,
stoves,
or
other
appliances
(including
amplifiers)
that
produce
heat.
10.
Power
Sources—
The
appliance
should
be
connected
to
a
power
supply
only
of
the
type
described
in
the
operating
instructions
or
as
marked
on
the
appliance.
11.
Grounding
or
Polarization—
The
precautions
that
should
be
taken
so
that
the
grounding
or
polarization
means
of
an
appliance
is
not
defeated.
12.
Power-Cord
Protection—
Power-supply
cords
should
be
routed
so
that
thay
are
not
likely
to
be
walked
on
or
pinched
by
items
placed
upon
or
against
them,
paying
particular
attention
to
cords
at
plugs,
convenience
receptacles,
and
the
point
where
thay
exit
from
the
appliance.
PORTABLE
CART
WARNING
53125А
Power
Lines
~
An
outdoor
antenna
should
be
located
away
from
power
lines.
Outdoor
Antenna
Grounding
~
If
an
outside
antenna
is
connected
to
the
receiver,
be
sure
the
antenna
system
is
grounded
so
as
to
provide
some
protection
against
voltage
surges
and
built
up
static
charges.
Section
810
of
the
National
Electrical
Code,
ANSI
/
NFPA
No.
70-1984,
provides
information
with
respect
to
proper
ground-
ing
of
the
mast
and
supporting
structure,
grounding
of
the
lead-
in
wire
to
an
antenna
discharge
unit,
size
of
grounding
con-
ductors,
location
of
antenna-discharge
unit,
connection
to
ground-
ing
electrodes,
and
requirements
for
the
grounding
electrode.
See
Figure.
a-
Use
No.
10
AWG
(5.3
mm?)
copper,
No.
8
AWG
(8.4
mm?)
aluminum,
No.
17
AWG
(
1.0
mm?)
copper-clad
steel
or
bronze
wire,
or
larger,
as
a
ground
wire.
b-
Secure
antenna
lead-in
and
ground
wires
to
house
with
stand
-off
insulators
spaced
from
4-6
feet
(1.22
~
1.83
m)
apart.
c-
Mount
antenna
discharge
unit
as
close
as
possible
to
where
lead-in
enters
house.
d-
Use
jumper
wire
not
smaller
than
No.
6
AWG
(
13.3
mm?)
copper,
or
the
equivalent,
when
a
separate
antenna-grounding
electrode
is
used.
13.
Cleaning—
The
appliance
should
be
cleaned
only
as
recom-
mended
by
the
manufacturer.
14.
Nonuse
Periods—
The
power
cord
of
the
appliance
should
be
unplugged
from
the
outlet
when
left
unused
for
a
long
period
of
time.
15.
Object
and
Liquid
Entry—
Care
should
be
taken
so
that
objects
do
not
fall
and
liquids
are
not
spilled
into
the
enclosure
through
openings.
16.
Damage
Requiring
Service—
The
appliance
should
be
serviced
by
qualified
factory
authorized
service
personnel
when:
A.
The
power-supply
cord
or
the
plug
has
been
damaged;
or
B.
Objects
have
fallen,
or
liquid
has
been
spilled
into
the
appliance;
or
C.
The
appliance
has
been
exposed
to
rain;
or
D.
The
appliance
does
not
appear
to
operate
normally
or
exhibits
a
marked
change
in
performance;
or
E.
The
appliance
has
been
dropped,
or
the
enclosure
damaged.
17.
Servicing—
The
user
should
not
attempt
to
service
the
appliance
beyond
that
described
in
the
operating
instructions.
All
other
servicing
should
be
referred
to
qualified
factory
authorized
service
personnel.
WARNING:
To
reduce
the
risk
of
fire
or
electric
shock,
do
not
expose
this
appliance
to
rain
ог
moisture
CAUTION
RISK
OF
ELECTRIC
SHOCK
DO
NOT
OPEN
CAUTION:
TO
REDUCE
THE
RISK
OF
ELECTRIC
SHOCK,
DO
NOT
REMOVE
COVER
(OR
BACK).
NO
USER-SERVICEABLE
PARTS
INSIDE.
REFER
SERVICING
TO
QUALIFIED
SERVICE
PERSONNEL.
The
lightning
flash
with
arrowhead
symbol,within
an
equilateral
triangle,is
intended
to
alert
the
user
to
the
presence
of
uninsulated
“dangerous
voltage“
within
the
product's
enclosure
that
may
be
of
sufficient
magnitude
to
constitute
a
risk
of
electric
shock
to
persons.
intended
to
alert
the
user
to
the
presence
of
important
operating
and
maintenance
(servicing)
instructions
in
The
exclamation
point
within
an
equilateral
triangle
is
the
literature
accompanying
the
appliance.
EXAMPLE
OF
ANTENNA
GROUNDING
AS
PER
NATIONAL
ELECTRICAL
CODE
INSTRUCTIONS
ELECTROOE
SYSTEM
(09
nieno
metal
water
(>ре)
OPTIONAL
ANTENNA
GROUNDING
ELECTROOE
DRIVEN
6
FEET
(2
44
m)
INTO
THE
EARTH
REQUIRED
BY
LOCAL
CODES.
SEE
NEC
SECTION
810-21
(0
FOR
U.S.A.
ONLY
ENGLISH
AM
/
FM
STEREO
TUNER
RT-970BX
A
WORD
FROM
ROTEL
Rotel
take
this
opportunity
to
thank
you
for
choosing
our
equipment
for
your
home
entertainment.
Rotel
equipment
represents
a
very
high
state
of
the
art
in
sound
reproduction,
as
the
result
of
our
everlasting
deter-
mination
to
achieve
the
truly
hi-fi
performance.
Please
enjoy
the
sound
Rotel
have
created
for
many
years
to
come.
To
make
sure
you
get
the
most
out
of
your
equipment,
please
read
this
owner’s
manual
carefully
before
you
at-
tempt
any
connections.
BEFORE
CONNECTIONS
1.
Place
for
Installation
Ensure
to
place
the
unit
in
a
flat
surface
where
it
is
free
from
humidity,
vibration,
high
temperature
and
not
exposed
to
direct
sunlight.
Also,
be
careful
not
to
place
the
unit
in
a
highly
enclosed
area
without
adequate
ventilation
around
the
unit.
Do
not
block
the
ventilation
openings
at
the
top
and
the
bottom
of
the
unit
to
prevent
excessive
heat
built
up.
2.
Electrical
Requirements
Your
equipment
has
been
designed
to
be
powered
by
the
local
AC
voltage.
Check
the
setting
of
your
unit
by
looking
at
the
rear
panel
name
plate.
Never
try
to
plug
the
unit
into
an
outlet
of
higher
voltage,
as
this
causes
a
serious
fire
hazard.
Consult
your
dealer
if
in
doubt.
3.
Connecting
the
Power
Cord
Always
handle
the
power
cord
with
care.
Ensure
to
con-
nect
the
cord
to
the
household
wall
outlet.
When
plugging
and
unplugging
make
sure
the
power
switch
on
the
unit
is
turned
off.
4.
Do
not
Open
the
Cabinet
There
are
no
user-serviceable
parts
inside
the
cabinet
of
the
unit.
Do
not
attempt
to
open
the
cabinet
or
tamper
with
EXCLUSIVE
NOTE
FOR
U.K.
f
your
unit
comes
with
a
2-core
mains
lead
without
a
plug,
neither
core
is
to
be
connected
to
the
earth
terminal
of
a
three
pin
plug,
make
certain
that
they
are
connected,
according
to
the
following
instruction,
to
the
proper
terminals.
Check
that
the
terminals
are
screwed
down
firmly
and
no
loose
strands
of
wire
are
present.
IMPORTANT:
The
wires
in
this
mains
lead
are
coloured
in
accordance
with
the
following
code:
BLUE:
NEUTRAL
BROWN:
LIVE
As
the
colours
of
the
wires
in
the
mains
lead
of
this
apparatus
may
not
correspond
with
the
coloured
markings
identifying
the
terminals
in
your
plug
proceed
as
follows:
The
wire
which
is
coloured
BLUE
must
be
connected
to
the
terminal
which
is
marked
with
the
letter
N
or
coloured
BLUE
or
BLACK.
The
wire
which
is
coloured
BROWN
must
be
connected
to
the
terminal
which
is
marked
with
the
letter
L
or
coloured
BROWN
or
RED.
the
internal
components.
If
water
or
foreign
object
falls
inside
the
unit
by
accident,
disconnect
the
power
cord
immediately
and
consult
a
qualified
electrician
or
your
dealer.
5.
Cleaning
Your
Unit
If
your
unit
becomes
dirty,
wipe
it
gently
with
a
soft,
dry
cloth.
Never
use
solvents
of
any
kind.
CONNECTIONS
1.
Connecting
to
Integrated
Amplifier
or
Preamplifier
a)
Connect
the
OUTPUT
terminals
on
the
back
of
the
tuner
tothe
TUNER
inputs
on
the
rear
of
your
integrated
amplifier
or
preamplifier
using
the
proper
interconnecting
cords
supplied
with
the
tuner.
Make
sure
the
Right
(RED)
and
the
Left
(WHITE)
channels
are
correctly
connected.
b)
Note
you
may
connect
the
tuner
to
the
AUX
inputs
on
your
integrated
amplifier
or
preamplifier,
if
necessary.
AMPLIFIER
RT-970BX
2.
Installing
and
Connecting
Antenna
a)
Indoor
FM
Antenna
-
the
attached
indoor
antenna
wire
will
suffice
for
proper,
quiet
broadcast
reception
in
most
good
reception
areas.
To
install
it,
connect
the
antenna
to
the
FM
ANTENNA
terminals
on
the
back
of
the
tuner.
Then,
stretch
the
wire
out
and
secure
along
one
wall
or
where
reception
is
optimal.
ө
Indoor
Т-ѕһар
Antenna
wire
(Applicable
for
U.S.A.,
Canada
or
where
approved
to
the
usage)
FM
752
T-shap
antenna
wire
(300
ohm
)
300
ohm
—>75
ohm
Conversion
Plug
е
Indoor
Antenna
wire
(Applicable
for
European
version)
FM75Q
G
AM
a
OO
0)
59
Antenna
wire
А
ў
b)
Outdoor
FM
Antenna
-
In
areas
of
average
to
weak
reception
conditions,
an
outdoor
antenna
mounted
on
the
roof
or
top
of
the
building
may
be
necessary
for
best
results.
When
using
such
outdoor
type
antenna,
ensure
remove
the
indoor
antenna.
A
75-ohm
coaxial
cable
is
usually
recommended.
If
using
this
type
cable,
properly
hook
it
up
to
the
designated
antenna
terminals
on
the
back
of
the
tuner.
When
in
doubt
on
the
FM
outdoor
antenna
system,
consult
your
dealer.
FM752
G
AM
^
QA
E
75
оһт
coaxial
cable
To
outdoor
FM
antenna
c)
AM
Antenna
-
the
loop
antenna
is
provided
for
AM
reception.
Lock
the
loop
onto
the
loop
holder
on
the
back
of
the
tuner,
and
connect
the
two
ends
to
the
antenna
terminals
marked
G
and
AM.
Swing
out
the
loop
around
for
finding
the
best
AM
reception.
In
difficult
reception
areas,
connect
an
outdoor
antenna
which
is
usually
a
long
piece
of
shielded
wire
to
the
AM
terminal.
Make
sure
the
loop
is
still
left
connected
even
if
the
outdoor
or
another
antenna
is
used.
Swing
out
for
optimal
reception
To
outdoor
AM
antenna
SWITCHES
AND
CONTROLS
(1)
Power
Button
Press
this
button
to
turn
on
and
off
the
unit.
The
LED
indicator
above
it
will
glow
when
the
power
is
turned
on.
CAUTION:
As
long
as
the
power
cord
is
connected
to
a
live
AC
outlet,
power
is
supplied
to
the
tuner
regardless
of
the
position
of
the
power
button.
This
is
to
enable
the
memory
backup
to
work.
(2)
Signal
Indicator
The
"0"
to
"5"
digital
indicator
lights
up
to
show
the
incom-
ing
strength
(sensitivity).
Receiving
condition
for
a
broad-
cast
is
optimized
when
"5"
or
the
higher
number
illuminated.
(3)
Frequency
Display
and
Multi-function
Indicator
1)
The
frequency
of
the
station
selected
is
displayed.
The
band
chosen,
FM
ог
AM,
is
also
shown
together
with
MHz
for
FM
or
KHz
for
AM
on
the
frequency
display.
2)
The
word
MEMORY
lights
up
while
the
Memory
button
is
activated.
3)
The
word
STEREO
glows
when
stereo
broadcasting
station
is
tuned
in
and
when
the
Muting
Off/
Mono
button
is
deactivated
for
the
stereo
operation.
It
will
also
not
light
up
for
very
weak
stereo
signals
which
the
tuner
will
not
receive
in
stereo.
(4)
Station
Buttons
Pressing
one
of
these
buttons
will
tune
the
tuner
to
the
frequency
stored
in
the
memory.
Pressing
the
Memory
button
followed
by
one
of
these
buttons
will
store
the
frequency
displayed
in
that
menory.
It
is
possible
to
store
up
to
16
AM
or
FM
stations
in
the
memory.
The
LED
on
each
station
button
will
light
up
when
station
button
pressed.
CAUTION:
If
the
AC
power
is
removed
from
the
tuner
for
more
than
2
weeks,
the
frequencies
stored
in
the
memories
will
be
lost.
NOTE:
Each
time
you
switch
the
tuner
on,
it
will
tune
to
the
station
frequency
to
which
it
was
previously
tuned.
(5)
+8
button
The
tuner
can
store
up
to
16
different
frequencies
in
its
memory.
The
first
8
are
selected
(or
stored)
just
by
press-
ing
the
appropriate
button.
The
second
8,
numbers
9
to
16
are
selected
by
pressing
the
+
8
button
and
then
pressing
the
desired
station
button,
the
LED
on
it
will
light
up,
when
the
+8
button
pressed.
(6)
Tuning
Button
Allows
to
tune
in
frequecies.
Press
the
right
side
button
marked
>
to
increase
the
frequency
and
the
left
side
button
marked
<
to
decrease
it.
(7)
Memory
Button
Stores
frequencies
in
the
tuner’s
memory.
To
store
a
frequency
first
tune
to
the
desired
broadcast
program
using
the
Tuning
button.
Then
press
the
Memory
button
followed
by
one
of
the
station
buttons
marked
1
to
8
and
9
to
16
with
the
+8
button.
Although
there
are
only
8
buttons
marked
for
positions
1
to
8,
the
+8
button
con-
verts
the
buttons
to
positions
9
to
16.
So
the
buttons
have
double
functions,
e.g.,
the
button
1
is
also
9
when
used
with
the
+8
button.
The
Memory
indicator
in
the
display
will
light
up
during
this
process.
Note
that
once
the
Memory
button
is
pressed,
you
must
press
the
required
station
button
within
a
few
seconds
to
store
the
station
frequency.
If
the
Memory
indicator
is
no
longer
light,
you
must
press
the
Memory
button
again
before
storing
the
required
frequency.
For
example,
to
store
desired
local
station
in
the
station
button
12,
first
tune
in
to
the
station,
press
the
Memory
button,
then
press
the
+8
button
and
follow
to
press
the
station
button
4.
(8)
Auto
Tuning
Button
Permits
to
choose
auto
or
manual
tuning.
Inthe
auto
mode,
pressing
either
the
Tuning
button
will
cause
the
tuner
to
increase
or
decrease,
depending
on
which
end
of
the
Tuning
button
pressed,
the
received
frequency
until
a
reasonably
strong
signal
is
received.
At
this
point
the
tuning
will
stop
automatically.
inthe
manual
mode,
pressing
either
Tuning
button
causes
the
tuner
to
increase
or
decrease
the
received
frequency
only
for
as
long
as
the
Button
is
depressed.
NOTE:
Auto
tuning
does
not
operate
for
AM
band.
ROTEL
AM/FM
STEREO
TUNER
RT—970BX
(9)
FM
Wide
button
Press
the
button
to
the
WIDE
position
for
a
wider
FM
bandwidth
to
enjoy
better
FM
sound
during
normal,good
reception
conditions.
If
there
is
too
much
hiss
or
noise
from-the
neighboring
station.
etc.,
press
the
button
to
deactivate
the
wide
circuit
and
back
to
normal
bandwidth
position
for
reducing
such
noise
as
mush
as
possible.
(10)
RF
ATT
button
Press
the
button
to
attenuate
the
RF
gain
for
reducing
the
noise
from
the
strong
neighboring
station
received.
(11)
Mute
Off/
Mono
Button
Allows
selection
of
FM
mono
or
stereo
operation.
When
the
Mono
position
is
chosen,
any
broadcast
will
be
received
monaurally
and
the
muting
switch
for
suppress-
ing
interstation
noise
will
be
deactivated
to
pull
weak
signals
which
are
normally
cut
off
during
the
stereo
opera-
tion.
For
reception
of
weak
and
noisy
signals,
use
the
Mute
Off/
Mono
position.
For
normal
use,
choose
the
stereo
operation
by
deactivating
the
Button.
in
this
position,
stereo
broadcasts
will
be
provided
in
stereo
and
the
STEREO
indicator
will
light
up.
When
mono
programs
are
broadcasted,
mono
sound
is
provided
and
the
STEREO
indicator
will
not
light.
(12)
Hi-Blend
button
Press
the
button
to
reduce
the
annoying
noise
mixed
in
with
the
signal.
This
switch,
however,
should
not
be
always
deactivated
unless
necesary.
(13)
AM
Wide
Button
Press
the
Button
to
the
wide
position
for
a
wider
AM
bandwidth
to
enjoy
better
AM
sound
during
normal,
good
reception
conditions.
If
there
is
too
much
hiss
or
noise
from
neighboring
stations,
etc.,
press
the
Button
to
deactivate
the
Wide
circuit
and
back
to
the
normal
bandwidth
position
for
reducing
such
noise
as
much
as
possible.
(14)
Band
Selection
button
Allows
to
select
reception
on
FM
or
AM
band.
WORDS
ON
OPERATIONS
Precautions
1.
Before
commencing
operation,
check
to
see
if
all
con-
nections
are
properly
made.
2.
Always
ensure
to
set
the
Volume
control
of
the
con-
nected
integrated
amplifier
or
preamplifier
to
the
minimum
position
before
turning
on
the
Power
switch.
Raise
the
volume
level
after
the
desired
station
is
tuned
in.
Memory
Backup
As
explained
above,
the
memory
for
the
preset
stations
is
retained
as
long
as
the
power
cord
is
plugged
into
an
AC
outlet,
regardless
of
the
position
of
the
Power
button.
However,
if
you
leave
the
power
cord
unplugged
for
over
2
weeks,
or
if
there
is
a
power
failure
for
over
three
days,
the
stored
frequencies
will
be
lost.
In
such
cases,
the
operation
for
storing
frequencies
in
the
memory
have
to
be
done
again
from
the
beginning.
Tuning
Modes
Bear
in
mind
that
there
are
3
modes
of
tuning
with
the
tuner
:
auto
tuning,
manual
tuning,
and
preset
(memory)
tuning.
The
simpliest
is
the
preset
tuning,
as
you
only
have
to
stored
up
to
16
of
your
favorite
FM
or
AM
stations
once
and
recall
any
one
of
them
with
one
touch
(or
two
touches
in
case
of
the
buttons
9to16).
Make
sure
tolearn
the
proper
method
for
the
storage
in
the
memory
as
instructed
above.
HUM
AND
NOISE
Inany
high
fidelity
installations,
hum
may
be
caused
by
the
interconnection
of
turntable,
tuner,
amplifier
and
speakers
as
the
result
of
wiring,
different
grounding
or
locations
of
components.
Normally,
hum
is
rarely
associated
with
a
faulty
tuner,
and
the
most
likely
cause
lies
in
the
installation.
If
any
part
of
the
antenna
is
in
contact
with
a
ground
point
(copper
water
pipes
for
example)
hum
will
almost
certainly
reduce
if
your
amplifier
has
a
three
core
mains
lead.
It
is
also
important
to
check
that
the
audio
interconnect
cords
have
been
pushed
fully
into
their
sockets
on
both
tuner
and
amplifier.
Sometimes
the
problem
is
actually
caused
by
a
signal
which
is
too
strong,
in
which
case
an
antenna
attenuator
is
recommended.
If
in
doubt,
please
consult
your
dealer.
SPECIFICATIONS
RT-970BX
FM
TUNER
SECTION
Usable
Sensitivity.............
10.8
dBf/
0.95
uV
(75
ohms)
50
dB
Quieting
Sensitivity:
Мопо..............................
14.8
dBf/
1.5
uV
(75
ohms)
SIOIBOS
езана
37.2
dBf/
20
uV
(75
ohms)
Signal-to-Noise
Ratio
(at
65
dBf):
МОГ
лл
гарал
83
dB
Sinou
78
dB
Harmonic
Distortion
(at
65
dBf):
WA
Ze
ш
аа
аА
0.05
%
(mono),
0.21
%
(stereo)
Frequency
Response.......30
to
15,000
Hz,
+/-0.5
dB
Capture
Вайо....................
1.0
dB
Alternate
Channel
Selectivity:
Wide/
Магтом..................
60
dB/
80
dB
Adjacent
Channel
Selectivity...15
dB
(Narrow)
Spurious
Response
Ratio..100
dB
Image
Response
Ratio......75
dB
IF
Response
Ratio.............
100
dB
AM
Suppresion
Ratio.........
60
dB
Stereo
Separation:
100
Hz/
1
КН2/
10
kHz....43
dB/
48
dB/
38
dB
Subcarrier
Product
Ratio...60
dB
SCA
Rejection
Вайо..........
70
dB
Output
M
E
aE
1.0
V
Antenna
Іприї....................
75
ohms
unbalanced
AM
TUNER
SECTION
SENSIS
Yeston
350
uV/m
Selectivity
(Wide/
Narrow)..27
dB/
42
dB
Signal
to
Noise
Вайо.........
55
dB
Image
Response
Ratio......40
dB
If
Response
Ratio..............
60
dB
PUTTOTINA
Ss
:ncesssnncasnsseseccassees
Loop
Antenna
MISCELLANEOUS
Power
Requiremenrt..........
120
V/
60
Hz,
220
V/
50
Hz,
240
V/
50
Hz
(depending
on
destinations)
Power
Consumption........
10
watts
Dimensions
(overall)........
440
(W)
x
72
(H)
x
327
(D)
mm
17-3/8"
x
2-7/8"
х
13"
Weight
(пе!)......................
3.9
kg/
8.58
Ibs.
e
Specifications
and
design
subject
to
possible
modifica-
tion
without
notice.
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