Thank you for purchasing a Futaba SKYSPORT 4YF.
Before using your SKYSPORT 4YF, read this manual carefully and use your R/C set safely.
After reading this manual, store it in a safe place.
See the glossary page 19 for a definition of the special terms used in this manual.
Application, Export, and Modification
1. This product may be used for model airplane use, if on the correct frequency. It is not intended for
use in any application other than the control of models for hobby and recreational purposes. The
product is subject to regulations of the Ministry of Radio/Telecommunications and is restricted under
Japanese law to such purposes.
2. Exportation precautions:
(a) When this product is exported from the country of manufacture, its use is to be approved by the
laws governing the country of destination which govern devices that emit radio frequencies. If this
product is then re-exported to other countries, it may be subject to restrictions on such export. Prior
approval of the appropriate goverment authorities may be required. If you have purchased this product from an exporter outside your country, and not the authorized Futaba distributor in your country,
please contact the seller immediately to determine if such export regulations have been met.
(b) Use of this product with other than models may be restricted by Export and Trade Control
Regulations, and an application for export approval must be submitted. In the US, use of 72MHz
(aircraft only), 75MHz (ground models only) and 27MHz (both) frequency bands are strictly regulated by the FCC. This equipment must not be utilized to operate equipment other than radio controlled models. Similarly, other frequencies (except 50MHz, for HAM operators) must not be used
to operate models.
3. Modification, adjustment, and replacement of parts: Futaba is not responsible for unauthorized
modification, adjustment, and replacement of parts on this product. Any such changes may void the
warranty.
The Following Statement Applies to the Receiver (for U.S.A.)
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
Battery Recycling (for U.S.A.)
The RBRCTM SEAL on the (easily removable) nickel-cadmium battery contained in
Futaba products indicates that Futaba Corporation of America is voluntarily participating
in an industry program to collect and recycle these batteries at the end of their useful
lives, when taken out of service within the United States. The RBRCTM program provides
a convenient alternative to placing used nickel-cadmium batteries into the trash or municipal waste system, which is illegal in some areas.
You may contact your local recycling center for information on where to return the spent battery.
Please call 1-800-8-BATTERY for information on Ni-Cd battery recycling in your area. Futaba Corporation of America's involvement in this program is part of its commitment to protecting our environment and conserving natural resources.
NOTE: Our instruction manuals encourage our customers to return spent batteries to a local recycling
center in order to keep a healthy environment.
RBRCTM is a trademark of the Rechargeable Battery Recycling Corporation.
Warning: This product contains a chemical known to cause cancer and birth defects (or other
reproductive harm).
•No part of this manual may be reproduced in any form without prior permission.
•The contents of this m anual are subject to change without prior notice.
•This manual has been carefully written. Please write to Futaba if you feel that any corrections or clarifications should
be made.
•Futaba is not responsible for the use of this product.
TABLE OF CONTENTS
FOR SAFETY ...................................................................................... 2
Meaning of Special Markings .........................................................................2
Precautions During Flight ...............................................................................2
Nicd Battery Charging Precautions ............................................................... 4
Storage and Disposal Precautions .................................................................. 4
Other Precautions ............................................................................................ 5
BEFORE USE ................................................................6
Set Contents ......................................................................................................6
Name and Handling of Each Part ................................................................... 7
Transmitter Operation and Movement of Each Servo ............................... 10
INSTALLATION AND ADJUSTMENT ..............................11
Connections ..................................................................................................... 11
Adjustments ....................................................................................................13
USING OTHER FUNCTIONS ........................................14
Using the Frequency Board ........................................................................... 14
Servo Horn ...................................................................................................... 14
Non-slip Adjustable Lever Head .................................................................. 14
Trainer Function ............................................................................................15
Charging the Nicd Battery ............................................................................ 16
REFERENCE ...............................................................17
Ratings ............................................................................................................. 17
Troubleshooting ............................................................................................. 18
Glossary ........................................................................................................... 19
1
FOR SAFETY
To ensure safe use, observe the following precautions.
Meaning of Special Markings
FOR SAFETY
following marks.
DANGER
WARNING
CAUTION
Symbol: ; Prohibited ; Mandatory
Do not fly simultaneously on the
same frequency.
Interference may
cause a crash.
*Use of the same frequency
will cause interference even
if the modulation method
(AM, FM, PCM) is different.
Do not fly on rainy or windy
days, or at night.
Pay special attention to the safety at the parts of this manual that are indicated by the
Mark Meaning
Procedures which may lead to a dangerous condition and
cause death or serious injury to the user if not carried out
properly.
Procedures which may lead to a dangerous condition or
cause death or serious injury to the user if not carried out
properly, or procedures where the probability of superficial
injury or physical damage is high.
Procedures where the possibility of serious injury to the user
is small, but there is a danger of injury, or physical damage,
if not carried out properly.
Precautions During Flight
WARNING
Do not fly in the following places:
-Near other R/C flying fields (within
about 3km)
-Near people on the ground, or objects
in the air
-Near homes, schools, hospitals, or
other places where there is a lot of
people
-Near high tension lines, high structures, or communication facilities
Radiowave interference and obstructions
may cause a crash. A crash caused by
trouble in the R/C set, or the model itself,
may cause death or property damage.
Water will penetrate
into the transmitter
and cause faulty operation, or loss of control, and cause a
crash.
Do not fly when you are tired,
sick, or intoxicated.
Fatigue, illness, or intoxication will cause a
loss of concentration or normal judgment
and result in operation errors and a crash.
2
Extend the antenna to its
full length.
Always test the digital proportional R/C
set before use.
If the antenna is
collapsed, the effective range of
the radiowaves
will become
shorter.
Check that the transmitter antenna is not loose.
If the transmitter antenna comes off during use, control will be
lost and the model will crash.
CAUTION
Do not touch the engine,
motor, and speed control
during and immediately
after use.
They are hot and will cause a burn.
Any abnormality in the digital proportional R/C set,
or model, may cause a crash.
*Before starting the engine, check that the
direction of operation of each servo matches
the operation of its control stick. If a servo
does not move in the proper direction, or operation is abnormal, do not fly the plane.
Test
When placing the transmitter on the
ground during flight preparations, be sure
that the wind cannot knock it over.
If it is knocked over, the throttle stick may be
pushed to full high and the engine will race and create a dangerous situation.
FOR SAFETY
When turning on the power switch
After setting the transmitter throttle lever to
maximum slow,
1. Turn on the transmitter power switch,
2. Then turn on the receiver power switch.
When turning off the power switch
After stopping the engine,
1. Turn off the receiver power switch,
2. Then turn off the transmitter power switch.
If the power switch is
turned off in the opposite
order, the engine may go to
full throttle unexpectedly
and cause an injury.
*Maximum slow: Direction in
which the engine or motor runs at
the slowest speed.
When adjusting the digital
proportional R/C set, always stop the engine, except when necessary.
If the engine suddenly goes to high
speed, it may cause an injury.
(In case of a set w/ frequency board)
When flying, always install the frequency board
to the transmitter antenna.
When the frequency was changed,
also change the frequency board.
3
FOR SAFETY
Always charge the nicd
battery before each flight.
If the battery goes dead during
flight, the plane may crash.
Ni-cd Battery Charging Precautions
(If using a Ni-cd battery)
Charge the digital proportional R/C nicd
WARNING
battery with the special charger, or digital proportional R/C quick charger, sold
separately.
Overcharging may cause burns,
fire, injury, blindness, etc. due to
overheating, breakage, electrolyte leakage, etc.
CAUTION
Do not use commercial nicd penlight
batteries.
During quick charging, the battery holder contacts may overheat and damage the equipment, or prevent charging.
Do not short the nicd battery connector terminals.
Shorting the terminals may cause sparking and
overheating and result in burns or fire.
Do not drop or apply strong
shock to nicd battery.
The battery may be shorted and cause
overheating or breakage and electrolyte leakage and result in burns or
damage by chemical mater.
Storage and Disposal Precautions
WARNING
Do not leave the digital proportional R/C set, battery, model airplane, etc.
within the reach of small children.
Touching and operating the digital proportional R/C set, or licking the battery, may cause
injury or damage due to chemical matter.
Do not throw the nicd battery into a fire or heat the nicd battery. Also, do
not disassemble or rebuild the nicd battery.
Breakage, overheating, and electrolyte leakage may cause injury, burns, or blindness.
4
When not flying the model, store the digital proportional R/C set with the
nicd battery in the discharged state. Recharge the nicd battery before the
next flight.
If a partially discharged nicd battery is recharged many times, its memory effect will reduce
the flight time substantially and may cause a crash, even if the battery is recharged.
Nicd battery electrolyte
The electrolyte in the nicd battery is a strong alkali and can cause blindness if it gets in the eyes. If you
get the electrolyte in your eyes, immediately wash your eyes with water and see a doctor. If you get the
electrolyte on your skin or clothes, it may cause a burn. Immediately wash it off with water.
FOR SAFETY
CAUTION
If the digital proportional
R/C set will not be used
Do not store the digital proportional R/C
set in the following places:
-Where it is very hot (40C/104F or more) or very
cold (-10C/-14F or less).
-Where the set will be exposed to direct sunlight.
-Where the humidity is high.
-Where there is strong vibration.
-Where it is dusty.
-Where there is steam and heat.
Storing the digital proportional R/C set in the places
above may cause distortion and trouble.
for a long time, remove
the batteries from the
transmitter and the
model and store them in
a dry place.
If the batteries are left in the transmitter and model, the battery electrolyte may leak out and degrade
the performance and shorten the
life of the transmitter and model.
Nicd battery recycling
Used nicd batteries are an important resource. Stick tape over the terminals and take the used batteries
to a nicd battery recycling center.
Other Precautions
CAUTIONS
Do not get fuel, waste oil,
etc. on plastic parts.
The plastic may melt and fail to
function.
Always use Genuine Futaba transmitter, receiver, servos, FET amp, nicd
battery, and other optional parts.
Futaba is not responsible for damage, etc. caused
by the use of parts other than Genuine Futaba
parts. Use the parts described in the instruction
manual and catalogs.
5
BEFORE USE
Set Contents
After opening the carton, first check if the following items are provided. The set
contents depend on the type of set.
Transmitter
BEFORE USE
Nicd Battery
or Battery
Receiver
Servo
Receiver
holder
R127DF
S3004
(x4)
NR-4QB
Charger
R148DF
S3101
(x2)
NR-4K
T4YF
Receiver Swich
Servo horn
R136F
(not for USA)
S3003
(x3)
Battery
holder
NR-4J
Others
If the set contents are incomplete, or if you have any questions, please contact the
dealer.
frequency board
Servo tray
Neck strap
Extension cord
6
Name and Handling of Each Part
TRANSMITTER T4YF (Front Panel)
Trainer Switch
Operates the instructor transmitter
when using the trainer function. The
student transmitter can be operated
only while this switching is being
pressed.
Elevator
(Mode 1)
Throttle
(Mode 2)
Trim Lever
Elevator
(Mode 1)
Throttle
(Mode 2)
/ Rudder
Stick
Rudder
Trim Lever
Antenna
Carrying Bar
Hook
Throttle
(Mode 1)
Elevator
(Mode 2)
Trim Lever
BEFORE USE
Throttle
(Mode 1)
Elevator
(Mode 2)
/ Aileron
Stick
Aileron
Trim Lever
Battery Level Indicator
Two LED display to indicate battery voltage level.
If the red LED flashes, replace batteries.
Power Switch
In the upper position, the
power is turned on.
Servo Reversing Switch
Switches that reverse the direction of operation of the
servos. The lower position is the normal side and the
upper position is the reverse side.
Channel display
AIL. : Aileron (CH1)
ELE. : Elevator (CH2)
THR. : Throttle (CH3)
RUD. : Rudder (CH4)
Operating direction display
REV. : Reverse side
NOR. : Normal side
7
TRANSMITTER T4YF (Rear Panel)
BEFORE USE
Trainer jack
Connects the trainer cord when using the
trainer function.
(The trainer cord is sold separately. )
(See page 15 for the trainer function operation instructions.)
Battery cover
Use when replacing the battery .
Slide the cover downward while pressing the
part marked " ".
TRANSMITTER T4YF (Side Panel)
Charging jack
(See page 16 for a description of the charging
method.)
8
RECEIVER
R127DF
Crystal
The crystal is replaced from the side of the
receiver.
FP-R127DF
Dual Conversion
7CHANNEL
RECIVER
FM
Antenna
R136F (not for USA)
Crystal
Antenna
Output / battery connector
"1": Aileron servo (CH1)
"2": Elevator servo (CH2)
"3": Throttle servo (CH3)
"4": Rudder servo (CH4)
"5": (Not used) (CH5)
7
6
5
4
3
2
1
B
"6": (Not used) (CH6)
"7": (Not used) (CH7)
"8": (Not used) (CH8)
"B": Battery connector
R148DF
Crystal
1
2
Antenna
UAL
D
ONVERSION
C
FP-R148DF
8 CHANNEL
MICRO
RECEIVER
FM
3
4
5
6
7
8/B
BEFORE USE
SERVO
S3003/S3004
Servo horn
To receiver
S3101
CAUTION
Use the horn set screw supplied
with the servo.
<Accessories>
The following items are supplies with
the set:
-Spare servo horn: Use to match the
application.
-Servo mounting parts: Rubber bushing, grommet, wood screw
Mounting flange
If a long screw is used, the interior of the
servo may be damaged.
9
Transmitter Operation and Movement of Each Servo
Before making any adjustments, learn the operation of the transmitter and the
movement of each servo. (In the following descriptions, the transmitter is assumed
to be in the standby state.)
When the aileron stick is moved to the
right, the right aileron is raised and the left
aileron is lowered, relative to the direction
of flight, and the plane turns to the right.
When the aileron stick is moved to the left,
BEFORE USE
the ailerons move in the opposite direction.
To level the plane, the aileron stick must
be moved in the opposite direction.
When the aileron stick is tilted and held,
the plane will roll.
When the elevator stick is pulled back, the
tail elevator is raised and the tail of the
plane is forced down, the air flow applied
to the wings is changed, the lifting force is
increased, and the plane climbs (UP operation). When the elevator stick is pushed
forward, the elevator is lowered, the tail of
the plane is forced up, the air flow applied
to the wings is changed, the lifting force is
decreased, and the plane dives (DOWN
operation).
AILERON OPERATION
ELEVATOR OPERATION
Aileron(ch1)
Left
Right
Elevator(ch2)
Down Down
Up Up
(Mode 1) (Mode 2)
(Viewed from the rear)
Left
Right
Down
Up
10
THROTTLE OPERATION
When the throttle stick is pulled back, the
engine throttle lever arm moves to the
SLOW (low speed) side. When the throttle
stick is pushed forward, the throttle lever
arm moves to the HIGH (high speed) side.
RUDDER OPERATION
When the rudder stick is moved to the
right, the rudder moves to the right and the
nose points to the right, relative to the
direction of flight. When the rudder stick is
moved to the left, the rudder moves to the
left and the nose points to the left and the
direction of travel of the plane changes.
Throttle(ch3)
High High
Low Low
(Mode 1) (Mode 2)
Rudder(ch4)
Left
Right
High
Engine throttle lever moves
to the high speed side.
Low
Engine throttle lever moves
to the low speed side.
Left
Light
INSTALLATION AND ADJUSTMENT
This section describes the installation method and adjustment method after installation when installing the receiver, servos, etc. to the plane.
Connections
Connection example is shown below.
Connection Example
Receiver R127DF
7
6
7CHANNEL
RECIVER
5
4
3
2
1
B
FP-R127DF
Dual Conversion
FM
Receiver switch
Nicd battery
Connection Example
*The number of servos depends
on the set.
Rudder
(CH4)
Throttle
(CH3)
Elevator
(CH2)
Aileron
(CH1)
*The number of servos depends
on the set.
Receiver
R136F
Receiver switch
Receiver battery holder
Aileron
Elevator
Throttle
Rudder
*Insert four batteries.
*When using 5 or more servos,
use the nicd battery sold separately.
(CH1)
INSTALLATION AND ADJUSTMENT
(CH2)
(CH3)
(CH4)
11
WARNING
Connector Connection
Insert the receiver, servo, and
battery connectors fully and
firmly.
If vibration, etc. causes a connector to
work loose during flight, the plane may
crash.
Receiver Vibrationproofing
/ Waterproofing
Vibrationproof the receiver by
wrapping it in sponge rubber or
some such material. If the receiver may get wet, waterproof
it by placing it in a plastic bag.
INSTALLATION AND ADJUSTMENT
If the receiver is subjected to strong vibration and shock, or gets wet, it may operate
erroneously and cause a crash.
Receiver Antenna
Servo Throw
Operate each servo horn over
its full stroke and adjust so that
the pushrod does not bind or is
not too loose.
Unreasonable force applied to the servo
horn will adversely affect the servo and
drain the battery quickly.
Servo Installation
Install the servos to the servo
mount, etc. through a rubber
grommet. Also install the servos
so that the servo case does not
directly touch the servo mount
or other parts of the fuselage.
Do not cut or bundle the receiver antenna. Also, do not
bundle the antenna together
with the servo lead wires.
Cutting or bundling the receiver antenna
will lower the receiver sensitivity and
shorten the flight range and cause a crash.
<Antenna installation>
For aircraft, attach the antenna to the top of
the tail.
Power Switch Installation
When installing a receiver power switch to the
fuselage, cut a rectangular hole somewhat
larger than the full stroke of the switch knob
and install the switch so it moves smoothly
from ON to OFF.
Also install the switch where it will not come
into direct contact with engine oil, dust, etc.
Generally, install the switch to the fuselage at
the side opposite the muffler exhaust.
12
Adjustments
The operating direction, neutral position, and steering angle of each servo are
adjusted.
CAUTION
The basic linkage and adjustments of the fuselage conform to the fuselage design drawings and kit instruction manual. Be sure that the center
of gravity is at the prescribed position.
Adjustment Procedure
Before making any adjustments, set
all the SERVO REVERSER switches
on the front of the transmitter to the
lower (NOR) position. (Switch the
switches with a small screwdriver,
etc.)
Turn on the transmitter and receiver
power switches and make the following adjustments:
etc.). If the neutral position has changed, reset
it by adjusting the length of the rod with the
linkage rod adjuster.
When the throw is unsuitable (different from
steering angle specified by the kit instruction
manual), adjust it by changing the servo horn
and each control surface horn rod .
1 Check the direction of opera-
tion of each servo.
If a servo operates in the wrong direction,
switch its SERVO REVERSER switch. (The
direction of operation can be changed without
changing the linkage.)
*Note that the direction of the aileron servo is
easily mistaken. (Page 10)
2 Check the aileron, elevator,
and rudder neutral adjustment
and left-right (up-down) throw.
Check that when trimmed to the center, the
servo horn is perpendicular to the servo and
check the neutral position of the fuselage
control surfaces (aileron, elevator, rudder,
3 Check the engine throttle
(speed adjustment) linkage.
Change the servo horn installation position
and hole position so that the throttle is opened
fully when the throttle stick is set to HIGH
(forward) and is closed fully when the throttle
stick and throttle trim are set for maximum
slow (backward position and lower position,
respectively).
4 After all the linkages have
been connected, recheck the
operating direction, throw, etc.
*Before flight, adjust the aircraft in accordance with the kit and engine instruction
manuals.
5 Fly the plane and trim each
servo.
INSTALLATION AND ADJUSTMENT
13
USING OTHER FUNCTIONS
Using the Frequency Board
1 Stick the band number seal
to the frequency board.
2 Install the frequency board
to the antenna.
Pass the frequency board over
the small part of the antenna
and slide it to the large part.
*Use side A or side B, depending on the
thickness of the antenna. Cut off the unused
side along the slot with cutters, etc.
Spare servo horns are supplied with the digital proportional R/C set. Use them ac-
USING OTHER FUNCTIONS
cording to the application.
CAUTION
Use the horn set screw supplied with the servo.
Non-slip Adjustable Lever Head
The length of the stick lever head can be adjusted.
1 Unlock lever heads A and B
by turning them in the arrow directions.
Servo Horn
If a long screw is used, the interior of the
servo may be damaged.
2 Set the stick to the most
comfortable length and lock the
lever heads by turning them in
the opposite direction of the arrows.
14
Trainer Function
The trainer function is a very effective way for training students. To use it, the special
trainer cord (sold separately) is necessary.
The special trainer cord can be connected to SKYSPORT4, FF5, SKYSPORT6, 6X
series, 7U series, 8U series, 9C series, and PCM1024Z series transmitters.
Operating Instructions
Instructor side:
Turn on the power switch and extend the antenna to its full length.
When the trainer switch is not pressed, the instructor has control.
When the trainer switch is pressed, control is transferred to the student.
Student side:
Never turn on the power switch.
*Connect the student and instructor transmitters with the trainer cord.
WARNING
Never turn on the student transmitter power switch.
Turning on the power switch will cause interference and a crash.
Set the student and instructor transmitters to the same settings.
For example, if the direction of operation is reversed, control will be lost and the plane will
crash.
The opposite side can only use an FM (PPM) type transmitter.
If the modulation method is different, control is impossible.
USING OTHER FUNCTIONS
15
Charging The Nicd Battery
The transmitter and receiver nicd batteries can be charged simultaneously or independently.
Charging The Nicd Battery
1 Connect the charger transmitter connector to the transmitter charg-
ing jack and the charger receiver connector to the receiver servo nicd
battery.
2 Connect the charger to an AC outlet.
3 Check that the charging LED light.
4 At the end of charging, disconnect the charger from the AC outlet.
USING OTHER FUNCTIONS
WARNING
Never plug the special charger into an AC outlet other than specified.
If the charger is plugged into an AC outlet other than specified, overheating, sparking, etc,
may cause burns, fire, etc.
Use the special charger, or digital proportional R/C quick charger, sold
separately to charge the digital proportional R/C nicd battery.
Overcharging will cause burns, fire, injury, or blindness due to overheating, breakage, electrolyte leakage, etc.
CAUTION
When not using the nicd battery charger, disconnect it from the AC outlet.
16
REFERENCE
Ratings
*Specifications and ratings are subject to change without prior notice.
TRANSMITTER T4YF
(2 sticks, 4 channels, FM transmitter)
Transmitting frequency: 29, 35, 36, 40, 41,
50, 60, 72, 75 MHz
Modulation method: FM (Frequency Modulation)
Power requirement: 12V (penlight battery
x8) or 9.6V nicd battery
Current drain: 180mA
RECEIVER R127DF
(7 channels, FM receiver)
Receiving frequency: 50, 60, 72, 75 MHz
Intermediate frequency: 1st IF 10.7MHz, 2nd
IF 455kHz
Power requirement: 4.8 or 6V (common with
servo)
Current drain: 10.0mA
Size: 64.3x35.8x21.0mm
Weight: 40.5g
RECEIVER R136F(not for USA)
(6 channels, FM receiver)
Receiving frequency: 29, 35, 36, 40, 41, 60,
72 MHz
Intermediate frequency: 455kHz
Power requirement: 6V (penlight battery x4)
or 4.8V nicd battery (common with servo)
Current drain: 9.5mA
Size: 33.4x50.3x18.1mm
Weight: 27.8g
SERVO S3003/S3004
(Standard servo)
Power requirement: 4.8V or 6V (common
with receiver)
Current drain: 8mA (idle)
Output torque: 3.2kg-cm (4.8V)
Operating speed: 0.23sec/60 degree (4.8V)
Size: 40.4x19.8x36mm
Weight: 37.2g
RECEIVER R148DF
(8 channels, FM receiver)
Receiving frequency: 35, 36, 40, 41, 50, 72
MHz
Intermediate frequency: 1st IF 10.7MHz, 2nd
IF 455kHz
Power requirement: 4.8 or 6V(common with
servo)
Current drain: 13mA
Size: 55.5x25.5x22.5mm
Weight: 30.4g
SERVO S3101
(Micro servo)
Power requirement: 4.8V or 6V (common
with receiver)
Current drain: 8mA (idle)
Output torque: 2.5kg-cm (4.8V)
Operating speed: 0.18sec/60 degree (4.8V)
Size: 28x13x29.7mm
Weight: 17g
REFERENCE
17
Frequencies (for U.S.A.)
The following frequencies and channel numbers may
be used for aircraft and surface in the United States:
72 MHz Band: (Aircraft only)
72.010 11 72.210 21 72.410 31 72.610 41 72.810 51
72.030 12 72.230 22 72.430 32 72.630 42 72.830 52
72.050 13 72.250 23 72.450 33 72.650 43 72.850 53
72.070 14 72.270 24 72.470 34 72.670 44 72.870 54
72.090 15 72.290 25 72.490 35 72.690 45 72.890 55
72.110 16 72.310 26 72.510 36 72.710 46 72.910 56
72.130 17 72.330 27 72.530 37 72.730 47 72.930 57
72.150 18 72.350 28 72.550 38 72.750 48 72.950 58
72.170 19 72.370 29 72.570 39 72.770 49 72.970 59
72.190 20 72.390 30 72.590 40 72.790 50 72.990 60
75 MHz Band: (car/boat only)
75.410 61 75.610 71 75.810 81
75.430 62 75.630 72 75.830 82
75.450 63 75.650 73 75.850 83
75.470 64 75.670 74 75.870 84
75.490 65 75.690 75 75.890 85
75.510 66 75.710 76 75.910 86
75.530 67 75.730 77 75.930 87
75.550 68 75.750 78 75.950 88
75.570 69 75.770 79 75.970 89
75.590 70 75.790 80 75.990 90
50 MHz Band: (Aircraft/car/boat -Fcc
Amateur license required)
50.800 00 50.900 05
50.820 01 50.920 06
50.840 02 50.940 07
50.860 03 50.960 08
50.880 04 50.980 09
Troubleshooting
If your digital proportional R/C set does not operate, its range is short, it intermittently stops operating, or it operates erroneously, take the action shown in the table
below. If this does not correct the trouble, please contact a Futaba dealer.
Check point Check item Action
Transmitter/receiver
battery
Transmitter antenna Loose.
REFERENCE
Crystal Disconnected.
Connector connection Incorrect wiring.
Receiver antenna Close to other wiring.
Servo linkage Binding or looseness Adjust at the fuselage side.
Dead battery.
Incorrect loading.
Faulty contact connection.
Dirty contacts.
Not extended to full
length.
Wrong band.
Different from specification.
Disconnection.
Not cut?
Not bundled?
Replace the battery. Charge the nicd
battery.
Reload the batteries in the correct
polarity.
If the contact spring is deformed,
correct it.
Wipe with a dry cloth.
Screw in.
Extend fully.
Push in.
Match transmitter/receiver band.
Replace with specified crystal.
Reinsert.
Push in.
Separate from other wiring.
Request repair.
Install in accordance with instruction
manual.
18
Motor (electric motor
plane)
Noise countermeasures.
Install a noise absorbing capacitor.
Glossary
The following defines the symbols and terms used in this instruction manual.
Aileron (AIL.)
Control surface at the left and right sides of the
main wing of an aircraft. It usually controls turning of the aircraft.
Channel
Represents the number of control systems. It can
also represent the number of servos that are operated.
Down
Means down elevator. It is the direction in which
the trailing edge of the elevator is pointing down.
Elevator (ELE.)
Control surface that moves up and down on the
horizontal stabilizer of an aircraft. It usually controls up and down.
Linkage
Mechanism that connects the servos and the fuselage control surfaces.
Modulation method
Two modulation methods are used with radio
control: AM (Amplitude Modulation) and FM
(Frequency Modulation). Radio sets for aircraft
mainly use FM. Another method that encodes
and transmits the modulated signals is called
"PCM".
Neutral
Means the neutral position. It is the state in which
a transmitter stick returns to the center when not
operated.
Normal (NOR.)
For the servo reversing function, it is the normal
side. The opposite side is the reverse side.
Proportional
Because today's radio control sets control servos
in proportion to stick operation, radio control
equipment is called proportional.
Rudder (RUD.)
Tail control surface that controls the direction of
the aircraft.
Reverse (REV.)
With the servo reversing function, this is used to
mean the reverse side. The opposite side is the
normal side.
Rod
A bar that connects the servos and the fuselage
control surfaces.
Servo horn
A part that is installed to the shaft of a servo and
changes the rotating motion of the servo to linear
motion and transmits the linear motion to a rod.
Servo horns come in various shapes.
Servo mount
Fuselage base for installing a servo to the fuselage.
Stick
Rod for operating the transmitter.
Throttle (THR.)
Part that controls the air mixture at the engine intake. When opened (throttle high side), a large air
mixture is sucked in and the engine speed increases. When closed (throttle low side), the engine speed decreases.
Trim
A device that fine adjusts the neutral point of
each servo for safe flying. It is a mechanism that
corrects bad tendencies of the aircraft.
Up
Means up elevator. Direction in which the trailing edge of the elevator is pointing up.
REFERENCE
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REFERENCE
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FUTABA CORPORATION
Makuhari Techno Garden Bldg., B6F 1-3 Nakase, Mihama-ku, Chiba 261-8555, Japan
Phone: (043) 296-5119 Facsimile: (043) 296-5124
©FUTABA CORPORATION 2003, 04
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