Receiver
RP4S1
Thank
you
for
purchasing
the
world’s
smallest
synthesized
receiver!
Please
read
the
manual
carefully
before
using
the
receiver.
Why
Synthesized
Receiver?
1.
Synthesized
receiver
gets
rid
of
the
inconvenience
of
using
the
crystal.
Receivers
with
crystal
still
use
the
technology
of
1970’s
which
have
to
switch
the
frequency
by
changing
the
crystal.
Users
have
to
bring
dozens
of
crystal
to
flying
field.
In
addition,
every
changing
of
the
crystal
may
damage
the
electron
devices.
While
it
is
only
need
to
push
the
button,
you
can
switch
to
any
channel
with
synthesized
receiver.
2.
Every
transmitter
and
receiver
has
production
tolerance
inevitably.
But
the
production
tolerance
of
the
crystal
affects
it
most.
Even
the
most
precise
crystal
has
the
tolerance
of
1
‐
2KHz,
and
sometimes
it
will
be
4KHz.
This
is
a
big
tolerance
to
a
10KHz
narrow
receiver.
Synthesized
receiver
will
correct
the
tolerance
because
it
can
automatically
follow
the
frequency
tolerance.
It
is
what
will
make
R/C
receiver
has
the
best
performance.
With
Corona’s
technology
in
manufacturing
R/C
products,
RP4S14
4CH
Single
conversion
receiver
becomes
the
smallest
in
the
world.
Do
not
only
focus
on
its
small
size.
Its
high
‐
performance
will
surprise
you.
RP4S1’s
Feature
1.
You
can
switch
the
frequency
freely.
2.
It
can
automatically
follow
the
frequency
tolerance
which
will
make
it
compatible
with
all
transmitters,
including
the
high
‐
rate
transmitter.
3.
The
'one
‐
button'
function
makes
it
convenient
to
change
the
frequency.
4.
With
such
a
small
size,
the
receive
range
reaches
as
far
as
1
mile
+
!
5.
The
dual
ceramic
IF
filters
ensure
ultra
narrow
selectivity,
and
can
reject
the
adjacent
channel
interference
effectively.
6.
DSP
technology
can
filter
the
noise
intelligently
and
eliminate
glitch
effectively.
You
can
put
RS410II
receiver
in
any
place
when
you
install
it
on
whatever
electric
puddle
‐
plane,
3D
plane,
glider
or
training
plane.
And
don't
worry
the
trouble
which
will
be
brought
by
changing
CG.
Reliability,
high
performance
and
sale
price,
they
are
what
CORONA
can
provide
for
you.
Specifications
Size
1.1”x0.6”x0.3”(28x15x7.6mm)
Weight
0.17oz/4.7g(with
shrink
wrap)
Sensitivity
better
than
2.0
μ
V
Selectivity
±8kHz
at
65dB
down
Number
of
channels
1
‐
4
Filtering
Dual
turned
RF
circuitry
Filtering
Dual
4
pole
ceramic
filter
Filtering
DSP
filtering
with
mild
algorithm
Modulate
FM/PPM
Shift
polarity
Positive
or
Negative
(auto
‐
detect)
Case
Shrink
wrap
Operating
Voltage
4.8V~6.0VDC
Operating
Current
11mA.
Frequency
Set
Fully
collapse
the
transmitter’s
antenna
and
move
the
transmitter
sticks
continuously.
Ask
someone
to
watch
the
servos
to
see
whether
the
receiver
has
lost
the
signal.
If
the
receiver
does
not
lose
the
signal
until
you
are
at
least
90m
away
from
it,
it
passes
the
quick
range
check.
Quick
Range
Checking
Fully
collapse
the
transmitter’s
antenna
and
move
the
transmitter
sticks
continuously.
Ask
someone
to
watch
the
servos
to
see
whether
the
receiver
has
lost
the
signal.
If
the
receiver
does
not
lose
the
signal
until
you
are
at
least
90m
away
from
it,
it
passes
the
quick
range
check.
Rigorous
Range
Checking
Your
local
environment
can
affect
the
range
of
the
receiver,
so
quick
range
checking
may
not
reflect
the
actual
range
correctly.
If
you
suspect
range
problems,
perform
a
rigorous
range
check.
1.
Place
the
receiver
on
a
non
‐
metallic
surface
(for
example,
a
wooden
bench)
which
is
at
least
2
feet
(60cm)
off
the
ground.
2.
Fully
extend
the
antenna
of
the
receiver
and
fix
it
vertically.
Don’t
let
it
touch
the
ground.
3.
Connect
one
servo
to
channel
1.
4.
Fully
extend
the
antenna
of
the
transmitter.
5.
Turn
on
the
transmitter
and
then
turn
on
the
receiver.
6.
Walk
away
from
the
receiver
while
moving
the
transmitter
sticks
continuously.
Ask
someone
watch
the
servo
and
note
any
loss
of
control.
Use
method
I
．
Normal
Working
State:
Turn
on
transmitter
and
adjust
it
to
PPM
mode.
When
electrify
the
receiver,
the
LED
will
blink
2
times.
Then
if
it
receives
correct
signal,
the
LED
will
be
lightening
and
work
normally;
if
LED
went
out,
it
means
the
transmitter
do
not
receive
correct
signal.
Note:
1
This
receiver
has
the
feature
of
memory,
please
electrify
the
receiver
again
if
change
another
transmitter.
2
When
change
crystal
of
different
frequency,
please
lock
up
new
transmitting
frequency.
II
．
Method
of
Searching
RP4S1
Transmitting
Frequency:
