OUTPUT
4CHANNEL
RADIO
SYSTEM
CONTROL
4VF-FM
FM 4 CHANNELS FOR AIRCRAFT AND SURFACE
INSTRUCTION MANUAL
1M23N01708 4VF(V2)
R
Digital Proportional R/C System
Thank you for purchasing a Futaba SKYSPORT 4.
Before using your SKYSPORT 4, 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 20 for a definition of the special terms used in this manual.
APPLICATION, EXPORT, AND RECONSTRUCTION
1. This product may be used for model airplane or surface use if on the correct frequency.
The product described in this manual 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 Japan, its use is to be approved by the Radio Law of the
country of destination.
(b) Use of this product with other than models may be restricted by Export and Trade Control Regulations. An application for export approval must be submitted.
3. Modification, adjustment, and replacement of parts
Futaba is not responsible for unauthorized modification, adjustment, and replacement of parts of this
product.
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.
THE RBRCTM SEAL (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 which is illegal in some areas.
Futaba Corporation of America's payments to RBRCTM makes it easy for you to return the spent battery to Futaba for recycling purposes. You may also 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 need to encourage our customers to return spent
batteries to Futaba or a local recycling center in order to keep a healthy environment.
RBRCTM is a trademark of the Rechargeable Battery Recycling Corporation.
-No part of this manual may be reproduced in any form without prior permission.
-The contents of this manual 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...................................................................................... 3
NICD BATTERY CHARGING PRECAUTIONS .................................................................. 4
OTHER PRECAUTIONS ..................................................................................................... 5
STORAGE AND DISPOSAL PRECAUTIONS.................................................................... 5
BEFORE USE.............................................................................7
SET CONTENTS ................................................................................................................. 7
NAME AND HANDLING OF EACH PART.......................................................................... 8
TRANSMITTER OPERATION AND MOVEMENT OF EACH SERVO ............................. 11
INSTALLATION AND ADJUSTMENT .....................................12
CONNECTIONS ................................................................................................................ 12
ADJUSTMENTS ................................................................................................................ 14
USING OTHER FUNCTIONS ...................................................15
USING THE FREQUENCY BOARD.................................................................................. 15
SERVO HORN................................................................................................................... 15
NON-SLIP ADJUSTABLE LEVER HEAD ........................................................................ 15
STICK LEVER SPRING TENSION ADJUSTMENT.......................................................... 16
TRAINER FUNCTION ....................................................................................................... 16
CHARGING THE NICD BATTERY ................................................................................... 17
REFERENCE ............................................................................18
RATINGS........................................................................................................................... 18
TROUBLESHOOTING ...................................................................................................... 19
GLOSSARY....................................................................................................................... 20
Repair Service ..................................................................................................................21
11
1
11
To ensure safe use, observe the following precautions.
MEANING OF SPECIAL MARKINGS
FOR SAFETY
Pay special attention to the safety at the parts of this manual that are indicated by the
following marks.
Mark Meaning
DANGER
WARNING
CAUTION
FOR SAFETY
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.
22
2
22
Symbol: ; Prohibited ; Mandatory
PRECAUTIONS DURING FLIGHT
WARNING
PROHIBITED ITEMS
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.
Simultaneous flight on
the same frequency
prohibited
Do not fly on rainy or windy days, or
at night.
Water will penetrate into
the transmitter and
cause faulty operation,
or loss of control, and
cause a crash.
Do not fly
Rain
Wind
Night
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.
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.
FOR SAFETY
MANDATORY ITEMS
Extend the antenna to its full
length.
If the antenna is too
short, the effective
range of the
radiowaves will become shorter.
Extend to
full length
CHECK ITEMS
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.
Always test the digital proportional R/C
set before use.
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
33
3
33
CAUTION
17
Install frequency
board
PROHIBITED ITEMS
When placing the transmitter on the
ground during flight preparations, be
sure that the wind cannot knock it over.
FOR SAFETY
If it is knocked over, the throttle stick may be
pushed to full high and the engine will race and
create a dangerous situation.
When turning on the power switch
After setting the transmitter throttle stick 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.
Do not touch the engine, motor,
and FET amp during and immediately after use.
They are hot and will cause a burn.
MANDATORY ITEMS
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.
When flying, always install
the frequency board to the
Power ON
Power OFF
transmitter antenna.
When the frequency was
changed, also
change the frequency board.
NICD BATTERY CHARGING PRECAUTIONS
Always charge the nicd
battery before each flight.
If the battery goes dead during
flight, the plane may crash.
44
4
44
WARNING
MANDATORY ITEMS
Charge the digital proportional R/C nicd 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.
Use the
special charger
CAUTION
Shock
prohibited
PROHIBITED ITEMS
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.
Penlight
nicd battery
Use
prohibited
OTHER PRECAUTIONS
CAUTIONS
PROHIBITED ITEMS
Do not get fuel, waste oil, etc. on
plastic parts.
The plastic may melt and fail to function.
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.
FOR SAFETY
MANDATORY ITEMS
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.
Use genuine parts
STORAGE AND DISPOSAL PRECAUTIONS
WARNING
Do not leave the digital proportional
R/C set, battery, model airplane, etc.
within the reach of small children.
PROHIBITED ITEMS
Touching and operating the digital proportional R/C set, or licking the battery, may
cause injury or damage due to chemical
matter.
55
5
55
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.
FOR SAFETY
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.
CAUTION
PROHIBITED ITEMS
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.
MANDATORY ITEMS
MANDATORY ITEMS
If the digital proportional R/C set
will not be used for a long time, remove the nicd 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.
66
6
66
Storing the digital proportional R/C set in
the places above may cause distortion
and trouble.
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.
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
Receiver
Servo
Receiver
Nicd Battery
or Battery
holder
R127DF
S3003
(x4)
NR-4QB
Charger
R148DF
S3101
(x2)
NR-4K
T4VF
Receiver Swich
Servo horn
R115F
(not for USA)
S3003
(x3)
Battery
holder
BEFORE USE
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
77
7
77
NAME AND HANDLING OF EACH PART
TRANSMITTER T4VF (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.
BEFORE USE
Antenna
Carrying bar
Elevator trim lever
(Mode 1)
Throttle trim lever
(Mode 2)
Elevator(Mode 1)
Throttle(Mode 2)
/ rudder stick
Rudder trim lever
Level meter
Displays the transmitter battery voltage.
When the needle deflects to the boundary
between the silver and red zones, recharge or replace the battery.
OUTPUT
WORLD LEADING MANUFACTURER OF R/C
REV.
NOR.
AIL. ELE. THR. RUD.
SERVO REVERSER
O N
POWER
Hook
Throttle trim lever
(Mode 1)
Elevator trim lever
(Mode 2)
Throttle(Mode 1)
Elevator(Mode 2)
/ Aileron stick
Aileron trim lever
88
8
88
Power switch
In the upper position, the
power is turned on.
Servo reversing switches
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
TRANSMITTER T4VF (REAR PANEL)
Trainer jack
Connects the trainer cord when using the
trainer function.
(The trainer cord is sold separately. )
(See page 16 for a the trainer function operation instructions.)
Battery cover
PUSH
Use when replacing the battery .
Slide the cover downward while pressing
the part marked "PUSH".
BEFORE USE
TRANSMITTER T4VF (SIDE PANEL)
Charging jack
Charging jack when the transmitter was
converted to nicd battery system.
(See page 17 for a description of the
charging method.)
99
9
99
RECEIVER
R127DF
Crystal
The crystal is replaced from the side of
the receiver.
BEFORE USE
Antenna
R115F (not for USA)
Antenna
FP-R127DF
Dual Conversion
7CHANNEL
RECIVER
FM
FP-R115F
Output / battery connector
"1": Aileron servo (CH1)
"2": Elevator servo (CH2)
"3": Throttle servo (CH3)
"4": Rudder servo (CH4)
"5": (Not used) (CH5)
"6": (Not used) (CH6)
"7": (Not used) (CH7)
"8": (Not used) (CH8)
"B": Battery connector
7
6
5
4
3
2
1
B
R148DF
Antenna
UAL
D
ONVERSION
C
FP-R148DF
8 CHANNEL
MICRO
RECEIVER
FM
1
2
3
4
5
6
7
8/B
Battery connector
5
4
3
2
1
Crystal
The crystal is replaced from the back of
the receiver.
To receiver
1010
10
1010
SERVO
S3003
Servo horn
S3101
Mounting flange
<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
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.)
AILERON OPERATION
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, 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.
Left
1.Aileron
Right
(Viewed from the rear)
Left
Right
ELEVATOR OPERATION
2.Elevator
Down Down
Up Up
(Mode 1) (Mode 2)
3.Throttle
High High
Low Low
(Mode 1) (Mode 2)
4.Rudder
Left
Right
Down
Up
High
Engine throttle lever moves
to the high speed side.
Low
Engine throttle lever moves
to the low speed side.
Left
Light
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).
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.
BEFORE USE
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.
1111
11
1111
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 examples are shown below. Make the connections matched to the type of
set.
CONNECTION EXAMPLE
Receiver R127DF
7
6
FP-R127DF
Dual Conversion
FM
INSTALLATION AND ADJUSTMENT
5
4
3
2
7CHANNEL
1
RECIVER
B
Receiver switch
*The number of servos depends
on the set.
Nicd battery
CONNECTION EXAMPLE
Receiver switch
Rudder
(CH4)
Throttle
(CH3)
Elevator
(CH2)
Aileron
(CH1)
(not for USA)
1212
12
1212
FP-R115F
5
4
3
2
1
Receiver
R115F
Receiver battery holder
*Insert four batteries.
*When using 5 or more servos,
use the nicd battery sold separately.
*The number of servos depends
on the set.
Rudder
(CH4)
Throttle
(CH3)
Elevator
(CH2)
Aileron
(CH1)
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.
If the receiver is subjected to strong vibration and shock, or gets wet, it may operate erroneously and cause a crash.
RECEIVER ANTENNA
Do not cut or bundle the receiver
antenna. Also, do not bundle the
antenna together with the servo
lead wires.
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
bushing. Also install the servos so
that the servo case does not directly touch the servo mount or
other parts of the fuselage.
Wood screw
Servo
Rubber
bushing
Grommet
Servo mount
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.
Attach the antenna with
a rubber band, etc.
Use a rubber bushing, etc. at the part at
which the antenna comes out of the fuselage
so that it will not break. Also tie a knot in the
antenna wire inside the fuselage so that the
antenna cannot be pulled out.
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.
INSTALLATION AND ADJUSTMENT
1313
13
1313
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,
INSTALLATION AND ADJUSTMENT
etc.)
Turn on the transmitter and receiver
power switches and make the following adjustments:
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 11)
SERVO REVERSER
REV.
NOR.
AIL. ELE. THR. RUD.
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, etc.). If the neutral posi-
tion 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 .
Perpendicular
Rod
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.
1414
14
1414
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.
Side A
Frequency board
Band number seal
(after sticking)
17
72.130MHz
Side B
SERVO HORN
Spare servo horns are supplied with the digital proportional R/C set. Use them according to the application.
Use the horn set screw supplied
with the servo.
If a long screw is used, the interior of the
servo may be damaged.
NON-SLIP ADJUSTABLE LEVER HEAD
The length of the stick lever head can be adjusted.
Lever head A Lever head B
2 Set the stick to the most com-
fortable length and lock the lever
heads by turning them in the op-
1 Unlock lever heads A and B by
turning them in the arrow directions.
posite direction of the arrows.
USING OTHER FUNCTIONS
1515
15
1515
STICK LEVER SPRING TENSION ADJUSTMENT
The stick spring strength can be adjusted.
The operating feel of the aileron, elevator, and rudder sticks can be individually adjusted.
1 Remove the four transmitter
rear case screws and remove the
rear case.
2 Adjust the spring strength by
turning the screw of the channel
you want to adjust.
Elevator
(Mode 1)
Elevator
(Mode 2)
Rudder
Aileron
3 Close the rear case and tighten
the four screws.
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, 7U series,
8U series, and PCM1024Z series transmitters.
USING OTHER FUNCTIONS
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.
(PC board)
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.
1616
16
1616
*Connect the student and instructor transmitters with the trainer
cord.
The opposite side can only use an
FM (PPM) type transmitter.
If the modulation method is different, control is impossible.
CHARGING THE NICD BATTERY
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
CHARGING THE NICD
BATTERY
The transmitter and receiver nicd batteries scan be charged simultaneously
or independently.
1 Connect the charger transmit-
ter connector to the transmitter
charging jack and the charger receiver connector to the receiver
servo nicd battery.
2 Connect the charger to a
110VAC outlet.
3 Check that the charging LED
light.
4 At the end of charging, discon-
nect the charger from the AC outlet.
When not using the nicd battery
charger, disconnect it from the AC
outlet.
Charger
TX:Transmitter charging display
RX:Receiver charging display
To transmitter charging jack
(Nicd battery system only)
Receiver nicd battery
USING OTHER FUNCTIONS
1717
17
1717
REFERENCE
RATINGS
*Specifications and ratings are subject to change without prior notice.
TRANSMITTER
(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
X 8) or 9.6V nicd battery
Current drain: 180mA
RECEIVER
(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
R127DF
T4VF
RECEIVER
(5 channels, FM receiver)
Receiving frequency: 29, 35, 36, 40, 41,
60, 72 MHz
Intermediate frequency: 455kHz
Power requirement: 6V (penlight battery
X 4) or 4.8V nicd battery (common with
servo)
Current drain: 22mA
Size: 33.4X50.4X20.5mm
Weight: 29.5g
SERVO
(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
R115F
S3003
(not for USA)
RECEIVER
REFERENCE
1818
18
1818
(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
R148DF
SERVO
(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
S3101
Frequencies
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.
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.
REFERENCE
Motor (electric motor
plane)
Noise countermeasures.
Install a noise absorbing capacitor.
1919
19
1919
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.
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.
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 sig-
REFERENCE
nals 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.
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.
FUTABA CORPORATION
2020
20
2020
Makuhari Techno Garden Bldg., B6F 1-3 Nakase, Mihama-ku, Chiba 261-8555, Japan
Phone: (043) 296-5119 Facsimile: (043) 296-5124
©FUTABA CORPORATION 1998, 06
REFERENCE
2121
21
2121
Loading...