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Installation
Installing the Antenna
Please use plastic mounts and a plastic antenna tube. Please keep the antenna wire elevated to the
highest position available.
Please do not use a metal antenna mount because it will create problems.
To protect the main antenna, insert the antenna into the antenna tube.
Please do not disconnect or cut the antenna. This will cause loss of signal.
Please do not disconnect or cut the antenna wire. You will receive less range.
Please place antenna away from receiver battery, ESC, motor and silicon wires and any
ATTENTION
other noise source. The antenna wire for the receiver requires special attention.
Pairing
When using the receiver for the first time, the receiver must store the ID number
of the module and "pairing" of the receiver and module is necessary. Pairing
must be performed when the module that is used is modified. When multiple
receivers are used, each receiver must go through the pairing process at least
once. This product has a French mode that respects the French 2.4GHz rule.
Please use this mode in France.
Prepare the module for
the pair process. Please
1
4
re a d th e i n s tr u c ti o n
3
m a n u a l o f t h e
c o m p a t i b l e m o d u l e.
Compatibility with conventional models
When changing your conventional receiver to the RF-903FH / RF-904FH
module / KR-411FH receiver, please note the following.
If you use it without checking these setting, the servo may
ATTENTION
become damaged or may cause abnormal behavior.
Functions
Fail-safe function
Fail-safe is when the receiver loses the radio signal of the transmitter and the function keeps channel 2 (throttle) in an optional position.
The configuration is usually full brake or neutral.
Setting
Full brake
R e c o m m e n d e d
p o s i t i o n s a r e t h e
following :
Full Brake
GP car
Neutral
EP car
(forward / Brake)
Hold the throttle
to the position
Neutral
On the transmitter, hold
EP car
t h e t h r o t t l e t o t h e
(forward / Back)
position you would like
(forward / Brake / Back)
it to be set to.
D.S.C. (Direct Servo Control)
By connecting receiver and servo directly with transmitter using D.S.C. (Direct Servo Control), you can configure settings without transmitting radio wave in pit
area or near R/C circuit. Please read the instruction manual of the transmitter.
The antenna of the receiver is brought close to
within 1m. While pushing the set button on the
receiver, turn the power source ON. (Please
push the setup button of the receiver easily with
a c y l i n d r i c a l s h a p e s u c h a s t o o t h p i c k .)
This function works for
only 2nd channel.
Press for 3 seconds
W h i l e h o l d i n g t h e
p o s i t i o n , p r e s s t h e
s e t u p b u t t o n o n t h e
receiver for 3 seconds.
If the pairing fails it may be due to a wireless LAN, microwave
oven or someone else trying to pair at the same time. Please
move to another location where you can try the pairing again.
ATTENTION
After pairing is completed, turn on the transmitter and then the
receiver and your system will be ready to use.
Release the set button when the LED
lamp of the receiver lights up. Once it
5
goes out, it will illuminate again and the
pairing will be complete. If the LED is
flashing or dim, please try to set again.
Check the operating range of each channel and re-adjust the travel,
steering, throttle high point and brake points on your transmitter.
For electric cars, ESC (speed controller) should also be reset to your
transmitter.
Transmitter ON
Turn on the transmitter.
Tu r n o n t h e r e c e i v e r
and verify operation.
LED light goes off
Hold the setup button on the receiver
u n t i l t h e L E D l i g h t g o e s o f f a n d
release the button. Fail-safe setting is
complete.
For electric powered models
Please keep distance to the receiver site,
due to noise sources of the battery, motor,
ESC, etc. If possible. Also keep away power
c o n d e n s e r s a n d s h o t k i d i o d e s t h a t
generate noise from the receiver antenna if
possible.
P l e a s e t u r n o f f t h e p o w e r o f t h e
receiver and transmitter. After pairing
6
is completed, turn on the transmitter
and then the receiver and your system
will be ready to use.
Receiver ON
Turn off the transmitter. And the
device that connected into 2nd
Channel will move to the position
that you set up.
Please be sure to set the fail-safe.
If you change the position of the fail-safe
o p e r a t i o n , p l e a s e s e t a g a i n . W e
recommend to set it again even if you
modify the car engine brake linkage.
Check
Transmitter OFF
WARNING
ATTENTION
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