FUTABA 6EXP User manual

6EXP
INSTRUCTION MUNUAL
for Futaba 6EXP6-channel,
PCM/PPM(FM) selectable
Radio control system
for Airplane/helicopter
1M23N12013
Futaba Corporation
Technical updates available at: http://www.futaba-rc.com
Entire Contents © Copyright 2006

2
TABLE OF CONTENTS
Introduction ..........................................................................3
Service ..................................................................................3
Contents and specifications...............................................4
Glossary................................................................................5
Introduction to the 6EXP system .......................................6
Transmitter controls and descriptions ..............................6
Radio installation .................................................................8
Receiver and servo connections .....................................10
Charging the Ni-Cd batteries ............................................11
LCD and Programming controls ......................................12
Programming the T6EXP radio .........................................14
MODL Model select function........................................14
MODL Model select function ..................................14
REST Data reset function ....................................... 14
ACRO/HELI Model type select function ................15
PULS Modulation select function ...........................15
TRNR Trainer function ............................................15
Model name settings...............................................16
REVR Servo reversing .................................................16
D/R Dual Rate and Exponential settings .................. 16
D/R Dual Rate settings ...........................................16
EXPO Exponentials ................................................17
EPA End Point Adjustments.........................................17
TRIM Trim Settings ......................................................18
FS Fail safe (PCM mode only) .....................................30
(ACRO functions)
PMX1 Programmable Mixer #1....................................19
PMX2 Programmable Mixer #2 ...................................19
FLPR Flaperon mixing .................................................20
FLTR Flap trim..............................................................20
V-TL V-tail mixing .........................................................21
ELVN Elevon mixing.....................................................22
(HELI functions)
N-TH Normal Throttle Curve........................................24
N-PI Normal Pitch Curve..............................................24
I-TH Idle-Up Throttle Curve function............................24
I-PI Idle-Up Pitch Curve function .................................25
HOLD Throttle hold function ........................................25
REVO Pitch - rudder mixing function ...........................26
GYRO Gyro mixing function.........................................26
SW-T Swash to throttle mixing.....................................28
SWSH Swashplate types selection & Swash AFR......28
Flow chart (ACRO) .............................................................31
Flow chart (HELI)................................................................32
OtherT6EXP functions.......................................................33
Trainer function.............................................................33
Throttle cut function......................................................33
Adjustable-length control sticks ...................................34
Changing the stick mode..............................................34
Flying safety guidelines ....................................................34
Flight preparation ..............................................................35
Model Data Recording Sheets (ACRO) ............................36
Model Data Recording Sheets (HELI) ..............................37

3
INTRODUCTION
Thank you for purchasing the Futaba 6EXP digital proportional R/C airplane/helicopter system. If this is your first “computer”
radio, rest assured that it is designed to make initial setup and field-tuning of your airplane/helicopter easier and more
accurate than would be if using a “non-computer” radio. Although this is a beginner or sport system with the requirements of
those flyers in mind, in order to make the best use of your Futaba 6EXP and to operate it safely, you must carefully read all
of the instructions.
Suggestion: If, while reading the instructions, you are unclear of some of the procedures or functions and become “stuck,”
continue to read on anyway. Often, the function or procedure will be explained again later in a different way providing another
perspective from which to understand it. Another suggestion is to connect the battery, switch and servos to the receiver and
actually operate the radio on your workbench as you make programming changes. Then, you’ll be able to see the effects of
your programming inputs.
SERVICE
(in USA)
If any difficulties are encountered while setting up or operating your system, please consult the instruction manual first.
For further assistance you may also refer to your hobby dealer, or contact the Futaba Service Center at the web site, fax
number or telephone number below:
www.futaba-rc.com
Fax: [phone]
Telephone (8:00 am to 5:00 pm Central time Monday through Friday): [phone], extension 2
If unable to resolve the problem, pack the system in its original container with a note enclosed and a thorough, accurate
description of the problem(s). Include the following in your note:
• Symptoms. • Any unusual mounting conditions.
• An inventory of items enclosed. • The items that require repair.
• Your name, address, and telephone number. • Include the warranty card if warranty service is requested.
Send your system to the authorized Futaba R/C Service Center at the address below:
Futaba Service Center
3002 N Apollo Drive Suite 1
Champaign, IL 61822
This product is to be used for sport and recreational flying of radio-control models only. Futaba is not
responsible for the results of use of this product by the customer or for any alteration of this product,
including modification or incorporation into other devices by third parties. Modification will void any
warranty and is done at the owner’s risk.
(USA only)
Protect the environment by disposing of rechargeable batteries responsibly. Throwing rechargeable
batteries into the trash or municipal waste system is illegal in some areas. Call 1-800-8-BATTERY for
information about Ni-Cd battery recycling in your area.

4
Transmitter: T6EXP
T6EXP Transmitter with 6-model memory.
Transmitting on 29, 35, 36, 40, 41, or 72 MHz band.
Operating system: 2-stick, 6-channel system
Modulation: FM(PPM) and PCM
Power supply: 9.6V NT8S600B Ni-Cd battery or 12V alkaline
battery
Current drain: 250mA
Receiver: R136F/R136HP/R137HP
R136F/R136HP/R137HP narrow band, FM/PCM/PCM 6/6/7
channel receiver.
Receiving on 29, 35, 36, 40, 41, or 72 MHz band.
Type: FM/PCM/PCM, Single conversion
Intermediate frequencies: 455kHz
Power requirement: 4.8V or 6V (shared with servo)
Current drain: 9.5mA (at no signal)
Size: 1.31x1.98x0.71” (33.4x50.3x18.1mm)
Weight: 0.98/0.99/0.99oz. (27.8/28.1/28.1g)
Receiver: R168DF/R168DP
R168DF/R168DP narrow band, FM/PCM 8 channel receiver.
Receiving on 29, 35, 36, 40, 41, or 72 MHz band.
Type: FM/PCM, Dual conversion
Intermediate frequencies: 455kHz, 10.7MHz
Power requirement: 4.8V or 6V (shared with servo)
Current drain: 10mA (at no signal)
Size: 2.20x1.14x0.79” (55.8x29.0x20.0mm)
Weight: 0.85/0.88oz. (24.0/25.0g)
Receiver: R156F
R156F narrow band, FM6 channel micro receiver.
Receiving on 29, 35, 36, 40, 41, or 72 MHz band.
Type: FM, Single conversion
Intermediate frequencies: 455kHz
Power requirement: 4.8V (shared with servo)
Current drain: 6mA (at no signal)
Size: 0.84x1.31x0.52” (21.4x33.3x13.1mm)
Weight: 0.4oz. (11.2g)
*The R156F receiver is designed to be used only for Park Flyers
and Slow Fly models. Due to the special design of the R156F, we
cannot recommend its use in other types of models (gas powered
models, etc.) that are flown at longer distances.
Receiver: R146iP
R146iP narrow band, PCM6 channel mini receiver.
Receiving on 29, 35, 36, 40, 41, or 72 MHz band.
Type: PCM, Single conversion
Intermediate frequencies: 455kHz
Power requirement: 4.8V (shared with servo)
Current drain: 6mA (at no signal)
Size: 1.13x1.68x0.63” (28.7x42.7x16mm)
Weight: 0.58oz. (16.5g)
CONTENTS AND SPECIFICATIONS
Servos: S3004/S3003
S3004 ball bearing/S3003 standard servo with mounting
hardware and servo arm assortment
Control system: Pulse width control,1.52ms neutral
Power requirement: 4.8 or 6V (from receiver)
Output torque: 44.4oz-in [3.2kg-cm] @4.8V
Operating speed: 0.23sec/60°@4.8V
Size: 1.59x0.78x1.41" [40.4x19.8x36mm]
Weight: S3004- 1.3oz (37.2g) / S3003- 1.3oz (38.0g)
Servos: S3001
S3001 standard ball bearing
Control system: Pulse width control,1.52ms neutral
Power requirement: 4.8 or 6V (from receiver)
Output torque: 44.4oz-in [3.2kg-cm] @4.8V
Operating speed: 0.23sec/60°@4.8V
Size: 1.59x0.78x1.41” [40.4x19.8x36mm]
Weight: S3004- 1.3oz (37.2g) / S3003- 1.3oz (38.0g)
Servos: S3110/S3114
S3110/S3114 micro servo
Control system: Pulse width control,1.52ms neutral
Power requirement: 4.8 (from receiver)
Output torque: 22.2oz-in [1.6kg-cm] @4.8V
Operating speed: 0.1sec/60°@4.8V
Size: 0.86x0.43x0.78” [21.8x11x19.8mm]
Weight: 0.27oz (7.7g)
Other components:
Switch harness
9"[200mm]aileron extension cord (to facilitate quick
connecting and disconnecting of aileron servo with removable
wing)
Instruction manual
*Specifications and ratings are subject to change without notice.

5
Receiver crystals:
The receiver frequency may be changed as long as it remains within the “low” and “high” band frequency range. If your
receiver is on any channel from 11 through 35, it is a “low band” receiver and the frequency may be changed to any other
channel from 11 through 35 without having to perform any other service. Simply purchase a crystal on the desired channel,
then replace the existing crystal in your receiver with the new one. If your receiver is on any channel from 36 through 60, it is a
“high band” receiver and the frequency may be changed to any other channel from 36 through 60. To order a receiver crystal,
replace the “**” in the order numbers below with the required channel number. (To order a receiver crystal on channel 30,
order FUTL5730.)
FM Dual Conversion 72 MHz low band (channels 11 - 35) receiver crystal . FUTL57**
FM Dual Conversion 72 MHz high band (channels 36 - 60) receiver crystal . FUTL58**
Note: Should you ever wish to change the transmitter frequency, the transmitter must be sent to the Futaba Service Center for retuning.
GLOSSARY
It will be helpful to understand the following terms before reading the rest of the manual. The terms are not in alphabetical
order, but are in a logical order that prepares the reader for understanding the next term.
Reversing (servo reversing) - A function that allows the user to determine the direction of response of each servo. If, after
hooking up the servos, a control on the model responds in the wrong direction, the user may change the servo's direction so
the control responds correctly.
Throw - When speaking of a control surface (such as an elevator or aileron), the throw is the
distance the surface moves. Control surface throw is usually measured at the trailing edge of
the surface and is expressed in inches or millimeters. The model in the diagram has 1/2" [13mm]
of up elevator throw. Throw can also refer to the distance a servo arm (or wheel) travels.
Dual rate (D/R) - On the 6EXP the dual rate switch allows you to instantly switch, in flight,
between two different control throws for the aileron, elevator and rudder. Often, different control
throws are required for different types of flying. (“Low” throws may be required for flying at
high speeds where the model’s response becomes more sensitive, and “high” throws may be
required for aggressive aerobatic maneuvers or landing or flying at lower speeds where the
model's response becomes less sensitive.)
End point adjustment (E.P.A.) - Sets the overall, maximum distance the servo rotates in either direction. (No matter where
the dual rates are set, the servo will never travel beyond the limit set by the end point adjustment.)
Exponential - Normally, servos respond proportionally to control stick input from the transmitter (e.g., if the stick is moved
halfway, the servo will move halfway). However, with “exponential,” the servo can be made to move more or less than initial
stick movement (less servo movement is more common). Exponentials are commonly used to “soften,” or decrease initial
servo travel for the ailerons, elevators and rudder. This way, initial control stick inputs from the pilot result in small servo
movement for a smoother flying airplane.
(Dual rates adjust the amount of servo travel. Exponentials determine where most of the travel will occur.)
Mixing - Two (or more) servos can be made to operate together either by mechanically joining the wires (with a Y-connector)
or by electronically “joining” them through programming functions in the transmitter. When servos are electronically joined via
programming, they are said to be “mixed.” Unlike joining servos with a Y-connector, when servos are mixed electronically they
can be made to move in opposition. Additionally, each servo’s end points can be independently set.

6
INTRODUCTION TO THE 6EXP SYSTEM
IMPORTANT!: Always turn on the transmitter first, then the receiver. When turning off the system, always turn off the receiver
first. The object is never to have the receiver on by itself. Otherwise, the servos or control surfaces could be damaged, or in the
case of electric-powered models, the motor may unexpectedly turn on causing severe injury.
IMPORTANT!: Never collapse the transmitter antenna by pushing down from the top. If one of the segments becomes
momentarily stuck you may damage the antenna. Instead, collapse the antenna from the bottom, drawing in one segment at a
time.
Transmitter
Transmits in both FM (PPM) and PCM by selecting modulation/cycling transmitter. Requires receiver of proper modulation. The
liquid-crystal display (LCD) on the face of the compact, ergonomically-designed case is easy to read and allows rapid data
input. The system also holds independent memories for six different models. The new, adjustable-length control sticks provide
an improved feel.
ACRO mode: External switches operate dual rates (D/R), landing gear, and trainer cord or “buddy-box” capabilities.
Programming features include servo reversing and E.P.A on all channels, dual rates, exponentials and programmable mixing.
Additionally, any one of four, factory-set, preprogrammed “wing-type” mixers including flaperon, V-tail, elevon mixing may be
selected.
HELI mode: Dual rate (D/R), Idle up, Throttle hold, and Gyro sense can be operates by switch. Two different gyro senses can
be set with Futaba GY401/502/611 Gyro on gyro function of this transmitter. Programming features include servo reversing
and E.P.A on all channels, dual rates, exponentials, throttle curve, pitch curve, throttle hold, and pit to rudder mixing(REVO).
Additionally, any one of three, factory-set, preprogrammed “swashplate type” mixers including three servo type 3-S/3-E may
be selected.
Transmitter controls
The diagram and explanations briefly describe the functions of the Futaba T6EXP transmitter. Full instructions on how to
operate the controls are provided beginning on page 14.
NOTE: The diagram shows a Mode 2 system as supplied. (More on flight modes on page 34).
Aileron, Elevator & Rudder
dual rate switch
Antenna
A:Gear switch/CH.5
H:Gyro switch/CH.5A:Flap switch/CH.6
H:Throttle hold switch
Carrying handle
Liquid-crystal display
screen (LCD)
Throttle/rudder
control stick
(Mode 2)
MODE key
SELECT key
A:Tr a iner switch
H:Idle-up switch Neck strap hook
Charging jack
On-off switch
Rudder trim
lever
Throttle trim
lever (Mode 2)
DATA INPUT lever
Aileron trim lever
Elevator trim lever
(Mode 2)
Aileron/elevator
control stick
(Mode 2)
Throttle cut
button
DESCRIPTIONS:
Aileron, Elevator and Rudder dual rate switch -
Use this switch to “flip” between two aileron, elevator and rudder control throw settings. The throws can be set up however you
prefer, but generally, when the switch is “up” the throws are greater (“high rate”) and when the switch is “down” the throws are
less (“low rate”). This switch also flips between exponential rates (if used).
A:Flap switch/Channel 6 - This switch operates the servo connected to channel 6 in the receiver if your model has flaps this
is the control used to operate them.

7
H:Throttle – hold switch - This switch operates to hold the engine in the idling position and disengaged it from the Throttle
Stick. It is commonly use to practice auto-rotation.
Neck strap hook - Mounting point for optional neck strap.
Aileron/elevator control stick - Operates the servos connected to channel 1 (aileron) and channel 2 (elevator) in the
receiver.
Trim levers (all) - Used to shift the neutral or center position of each servo as labeled in the diagram. Once either trim lever
is operated, the trim position is displayed on the LCD screen. Also once either edit key is operated, all trim positions are
displayed sequentially on the LCD screen.
NOTE: The throttle trim lever is intended for fine tuning the throttle servo when the engine is at idle. Throttle trim does not
affect the throttle servo when the throttle control stick is all the way up (so idle r.p.m. can be adjusted without affecting
throttle settings through the rest of the stick movement).
Charging jack - Port for charging the transmitter batteries with the included battery charger.
On/off switch
DATA INPUT lever - Used to change the values of the various functions displayed on the LCD screen
Liquid – crystal display screen (LCD) - Displays programming modes and values entered.
MODE key - Used to scroll through and display the “11-14” different functions.
SELECT key - Used to display the values for the current function.
Throttle – cut button - To use the throttle-cut function, lower the throttle stick all the way, then push the throttle-cut button to
fully close the carburetor and shut of the engine.
Throttle/rudder control stick - Operates the servos connected to channel 3 (throttle) and channel 4 (rudder) in the receiver.
A:Trainer switch - Operates the trainer functions. To operate as a trainer switch the transmitter must be connected to another
transmitter via. a trainer cord (available separately).
H:Idle – up switch - This switch operates to change the fight condition which is set the throttle curve and pitch curve of mid
air maneuvers (rolls, loops, stall turns) and 3D flight.
A:Retractable landing gear switch/Channel 5 - Switch operates the servo connected to channel 5 in the receiver if your
model has retractable landing gear this is the control used to extend and retract the gear.
H:Gyro switch/Channel 5 - You can connect the sense adjust connector to the channel 5 of the receiver to operate the gyro
which has two different sense. Also if you use Futaba GY401/502/611 Gyro, two different gyro senses setting on gyro function
in this transmitter can be call by this switch.
Antenna - Radiates signals to the receiver. Never fly a model without fully extending the antenna or you may create
interference to other modelers and decrease operational signal range of the transmitter. The antenna may be removed and
replaced with another in case it is inadvertently broken.

8
RADIO INSTALLATION
Follow these guidelines to properly mount the servos, receiver and battery.
INPORTANT!: Please use PCM receiver if the composition parts of the model used much metal, carbon graphite etc.
because they will generates quite a lot of the noise.
• Make certain the alignment tab on the battery, switch and servo connectors is oriented correctly and “keys” into the
corresponding notch in the receiver or connectors before plugging them in. When unplugging connectors, never pull on the
wires. Always pull on the plastic connector instead.
• If any servo wires are not long enough to reach the receiver, servo extension wires (available separately) may be used.
Servo Rubber
grommet Servo Rubber grommet
• Always mount the servos with the supplied rubber grommets. Do not over
tighten the screws. No part of the servo casing should contact the mounting
rails, servo tray or any other part of the airplane/helicopter structure. Otherwise,
vibration will be transmitted to the servo causing premature wear and/or servo
failure.
• Note the small numbers (1, 2, 3, 4) molded into each arm on the Futaba 4-arm servo arms. The numbers
indicate how many degrees each arm is “off” from 90 degrees to correct for minute manufacturing
deviations from servo to servo.
• To center the servos, connect them to the receiver and turn on the transmitter
and receiver. Center the trims on the transmitter, then find the arm that will be
perpendicular to the pushrod when placed on the servo.
• After the servos are installed, operate each servo over its full travel and check that the pushrods and servo arms do not
bind or contact each other. Also make sure the controls do not require excess force to operate. If there is an objectionable
buzzing sound coming from a servo, there is probably too much resistance in the control. Find and correct the problem.
Even if there is no servo damage, excess battery drain will result.
• Use the mounting plate from the receiver on/off switch as a template for the cutout and screw holes. Mount the switch on
the side of the fuselage opposite the engine exhaust, and where it won’t be inadvertently turned on or off during handling or
storage. Be certain the switch moves without restriction and “snaps” from ON to OFF, and that the cutout allows full motion
of the switch in both directions.
• When you install the switch harness to the helicopter, please use switch cover. Generally sandwich the frame by switch and
switch cover and securely tighten the screws. It might be different installations on model by model. In that case, please
follow the model instruction manual.
Fasten about 5-10cm
from the servo outlet
so that the lead wire
is neat.
Margin in the lead wire.
• To prevent the servo lead wires from being broken by vibration during flight,
provide a margin so that the wire sticks out slightly and fasten it at suitable
points. In addition, periodically check the wire during daily maintenance.

9
• IMPORTANT:NEVER cut the receiver antenna or mount it in the model folded back on itself. Doing so will change its
electrical length, possibly reducing the distance from the pilot that the model can be controlled (“range”).
• The receiver antenna may be mounted inside or outside the model:
Internal antenna mounting:
• You may run the antenna inside of a non-metallic housing within the fuselage, but range may suffer if the antenna is
located near metal or carbon fiber pushrods or cables. Do not bind the antenna with servos, switch, battery harnesses. Be
sure to perform a range check before flying (see page 35).
External antenna mounting:
Antenna
Rubber Band, etc.
A.B.
• A. Use a cut off servo arm as a “stop” or strain
relief inside the fuselage to keep tension off the
solder joint holding the antenna to the receiver.
Guide the antenna through a hole in the fuselage. (If
possible, insulate the hole with a rubber grommet or a
small piece of rubber tubing.)
B. Make a hook from another cut off servo arm.
Insert the end of the antenna through two holes,
then connect the hook to a rubber band around a pin
inserted into the vertical stabilizer. Allow any excess
antenna length to trail behind the hook.
Antenna-exiting
hole
Rubber grommet or
silicon tube, etc.
Antenna
Nonmetal tube
• Please use rubber grommet or silicon tube to protect from cut or peel off insulation of
antenna on the fuselage antenna-exiting hole.
Place the receiver antenna out from the fuselage part to the nonmetal tube installed
in skid etc. Please keep antenna away from parts that made of metal and carbon
graphite.
• The receiver contains precision electronic parts. It is the most delicate radio component on-board the model and should
be protected from vibration, shock and temperature extremes. To protect the receiver, wrap it in R/C foam rubber or other
vibration-absorbing material. If appropriate, waterproof the receiver by placing it in a plastic bag and closing the open end
with a rubber band before wrapping it in foam. If moisture enters the receiver, intermittent operation or a failure may result.
Wrapping the receiver in a plastic bag also protects it from fuel and exhaust residue which, in some models, can work its
way into the fuselage.
Mounting the frequency clip: (for USA)
• To announce your frequency and avoid potential interference problems, the frequency
number should always be displayed on the transmitter antenna while flying. Peel the
backing from the numbers and apply them to both sides of the clip. Snap the end of the clip
that fits best to the base of the antenna as shown.You may cut off the other end of the clip.

10
RECEIVER AND SERVO CONNECTIONS
Connect the servos to the receiver to perform the functions indicated:
Receiver
output
channel
Function
Aircraft (ACRO) Helicopter (HELI)
1Aileron -or-right flaperon -or-right elevon (for tail-
less models) Aileron
2Elevator -or-left ruddervator (for V-tail models)
-or-left elevon (for tailless models) Elevator
3Throttle Throttle
4Rudder -or-right ruddervator (for V-tail models) Rudder
5Retractable landing gear Gyro sensitivity
6Flap -or-left flaperon Pitch
7Not used Not used
8Not used Not used
BReceiver on/off switch (the plug colored red
goes into the receiver)
Receiver on/off switch (the plug colored red
goes into the receiver)
Receiver
Switch
Harness
To Battery
Charging
Jack
(Black)
Aileron Servo
(CH1)
Optional
Gyro
System
Elevator Servo
(CH2)
Throttle Servo
(CH3)
Rudder Servo
Rudder (CH4)
Pitch Servo
(CH6)
The diagram shown is for helicopter models only.It is necessary to buy an additional gyro separately.
Gyro sensitivity (CH5)
Receiver
Switch
Harness
To Battery
Charging
Jack
(Black)
Aileron Servo
(CH1)
Elevator Servo
(CH2)
Throttle Servo
(CH3)
Rudder Servo
(CH4)
Gear Servo
(CH5)
Flap Servo
(CH6)
The diagram shown is for aircraft models only.Additional servos may have to be purchased separately.
(CH1)
(CH6)
(CH1)
(CH2)
(CH4)
(CH2)
(CH4)
Flaperon Mode (Dual Aileron
Servo, CH1 & 6)
Independent Aileron & Flap
(CH6)
(Red)
(Red)

11
CHARGING THE Ni-Cd BATTERIES
The transmitter and receiver batteries included with your 6EXP system are rechargeable, Ni-Cd (nickel-cadmium, pronounced
ni-kad) batteries. Ni-Cd batteries require special care and charging. Read the charging instructions carefully.
NOTE: The batteries are supplied partially charged, but will require a full, overnight charge before the model may be flown.
1. Connect the transmitter charging cord coming from the A/C wall charger to the charge jack in the right side of the
transmitter case. The receiver charging cord may be connected to the batteries two different ways: The charge cord may be
connected directly to the battery pack, or to the vacant charge connector (black) coming from the on/off switch in the model.
Charging “through the switch” is preferred as there will be no need to disconnect the battery.
2. Plug the A/C wall charger into a wall outlet. Note: If the wall outlet can be turned off by a switch in the room, be certain the
switch remains on after leaving the room. Otherwise, the batteries will not be charged!
3. The LEDs (light-emitting diodes) should light red, indicating that current is flowing and the batteries are being charged.
Discharged batteries will take about 15 hours to fully charge. If using an aftermarket fast charger, be certain to follow
the manufacturer’s instructions provided with the charger so you do not overcharge the batteries. NEVER charge
the batteries at a rate higher than 1,000mAh. The batteries should also be discharged periodically to prevent a condition
called “memory.” If, for example, only two flights are made each time you go flying, the batteries will not have “reached”
very far down into their full capacity. After doing this several times the batteries will “remember” and eventually “think” they
can supply only enough power for two flights. After two flights the batteries may not provide enough power to operate the
system, thus causing a crash. To erase any potential memory, cycle the batteries by discharging, then charging them with a
commercial battery cycler, or leave the system on and exercise the servos by moving the transmitter sticks until the servos
are moving very slowly, indicating that the battery is discharged. Cycling should be done every one to two months, even
during the winter or periods of long storage. If using a cycler with a readout, note the capacity after the batteries have been
cycled. If there is a noticeable drop in capacity the batteries should be replaced.
Note: Charging your batteries with the included Futaba A/C battery charger is always safe. However, fast-charging with
an aftermarket charger is acceptable as long as you know how to properly operate the charger. NEVER charge at a rate
higher than 1,000 mAh (1 Amp). If not done correctly, fast-charging can damage the batteries.

12
LIQUID CHIP DISPLAY (LCD) & PROGRAMMING CONTROLS
To open
programming menu;
Press both keys
simultaneously and
hold for one second
MODE key - use to select desired
function while programming
Throttle-cut button -
To use the throttle-cut
function,
SELECT key - use to select items within
function to be set or changed in the screen
DATA INPUT lever - use this lever to input
numbers or settings
LCD display screen
Current model
memory name
Modulation
indicator
Transmitter
battery voltage
Current model
type
When the transmitter is initially turned on, the model type, model
memory name, modulation type and transmitter battery voltage are
displayed on the LCD screen. When prompted by the user, the functions
and settings stored in the memory can also be read on the screen. The
user accesses the different functions using the MODE and SELECT
keys and changes the values and settings using the DATA INPUT lever.
(This is called programming!)
Note: Feel free to explore by scrolling through the programs and viewing the displays using the MODE and SELECT keys.
The MODE and SELECT keys only determine what will be displayed on the screen and will not change any of the settings.
Only when using the DATA INPUT lever will you be able to change any of the settings.
Model name
The Futaba T6EXP stores model memories for six models. This means all the data (control throws, trims, end points, etc.) for
up to six different models can be stored in the transmitter and activated at any time (depending upon which model you choose
to fly that day). This eliminates the requirement for reconfiguring the transmitter each time you decide to fly a different model
with it! When the transmitter is turned on the model type, model name, modulation and the transmitter voltage will be
indicated on the LCD screen. Before every flight BE CERTAIN that the correct model name for the model you intend to fly
appears on the screen. If the transmitter is not operating the correct model, some (or all) of the controls could be reversed and
the travels and trims will be wrong.
Flying a model with the wrong program will result in a crash, so always be certain the model name in the transmitter is
correct. One way to ensure this is to write the corresponding model name directly on the airplane or helicopter, or attach a
list to the bottom or back of the transmitter.

13
Transmitter battery voltage
“Battery” icon
In addition to the model type, the LCD screen also displays the transmitter battery voltage.
When the voltage goes below approximately 8.5 Volts the “battery” icon will flash and the low-
battery alarm will continuously beep until the transmitter is turned off. When the low-battery
alarm sounds you will have approximately four minutes (or less) to land your model before
losing control. You should never allow the transmitter voltage to become this low while flying,
but if it does, land immediately.
Note: When the transmitter voltage reads 8.9 Volts you will
still have approximately ten minutes (or less) before losing
operational range, so this is the recommended absolute
minimum voltage. If the transmitter ever reaches 8.9 Volts,
land as soon as safely possible. A more reasonable margin
of safety would be to quit flying for the day (or recharge the
batteries) when the transmitter battery.
SUGGESTED GUIDELINES
9.4 Volts - No more flying until recharge.
8.9 Volts - Land as soon as safely possible.
8.5 Volts - Emergency- Land immediately!
Mixer alert warning
The Mixer alert warning is displayed to alert you whenever you turn on the transmitter with
any of the mixing switches active. This warning will disappear when the offending switch or
control is deactivated. Switches for which warnings will be issued at power-up and model
selection are Throttle hold switch or Idle-up switch.
Backup error
The Backup error warning occurs when the transmitter memory is lost for any reason. If this
occurs, all of the data will be reset when the power is turn on again.
When the Backup error occurs, initialization starts from model number 6 to 1.
The model number on the left of the screen changes from 6 to 5, to 4, to 3, to 2, to 1, and
finally the number disappears. The disappearance of the model number indicates that the
initialization has been completed. Now you can turn off the power of the transmitter. Please
do NOT turn off the power during the initialization; otherwise initialization will restart when you
turn on the power.
Do not fly when this message is displayed: all programming has been erased and is not
available. Return your transmitter to Futaba service.

14
PROGRAMMING THE 6EXP RADIO
Anytime you wish to view or change any of the current settings in the transmitter, the programming mode must first be
entered by, of course, turning on the power, then by pressing the “MODE”and “SELECT”keys simultaneously and holding
them down for one second. Once in the program the MODE key will be used to scroll through each of the functions (Model
type ACRO: model select/ data reset/ model type select/ modulation select/ trainer/ model name, reversing, dual rates/
exponentials, end point adjustments, trim, programmable mix 1, programmable mix 2, flaperon mixing, flap trim, v-tail mixing,
elevon mixing, and failsafe Model type HELI: model select/ data reset/ model type select/ modulation select/ model name,
reversing, dual rates/ exponentials, end point adjustments, trim, normal throttle curve, normal pitch curve, idle-up throttle
curve, idle-up pitch curve, throttle hold, revolution mixing, gyro sensitivity, swash-throttle mixing/ swashplate types, and
failsafe) and the SELECT key will be used to view the settings within the function. When a data change is actually required the
“DATA INPUT”lever will be used to increase or decrease the value of the item displayed, thus making the change.
You can return to the home screen (where the model name and battery voltage is displayed) by pressing the MODE and
SELECT keys simultaneously and holding them down for one second.
Note: The functions are listed and described in the order that they appear in the transmitter. Read all the way through the
programming instructions before setting up your model (if you won’t be using any of the mixing functions for a while you
can read those instructions when ready). Refer to the FLOW CHART on page 31(ACRO) or page 32(HELI) as well.
Model Select/ Data Reset / Model Type Select / Modulation Select / Trainer / Model Name
MODL Model select function
To select model memory:
1. Access the Model Select function in the programming mode (by pressing the MODE and
SELECT keys simultaneously and holding them down for one second). The number for the
current, active model will be blinking.
2. To activate a different model memory press the DATA INPUT lever and hold it down for 0.5
seconds until the desired model number appears.
3. Now the model has been selected. All programming inputs from this point forward will affect
only the model number on the screen (until another model number is selected).
REST Data reset function
All the data for any model memory can be reset to the original factory defaults. Often this function is done to get a “fresh start”
and clear the memory before inputting new model settings.
To reset data:
1. Access the Model Select function in the programming mode (by pressing the MODE and
SELECT keys simultaneously and holding them down for one second). To select the model
memory you wish to reset press the DATA INPUT lever and hold it down for 0.5 seconds
until the desired model number appears.
2. Once the desired model number is displayed on the screen, press the SELECT key. A
“REST”will appear on the screen.
3. Push DATA INPUT upward or downward for about 2 seconds to clear and reset the memory.
“CLR” blinks first, and then it stops blinking with a sound. Now the model data is reset to the
initial setting that is the default value set at the factory.
The existing modulation and swashplate type settings are not reset. If the power switch is turned off while reset is underway,
the data may not be reset.
CAUTION: Resetting the current model memory will permanently erase ALL programming information for that model. The
data cannot be recovered (unless you recorded it on a Model Data Recording Sheet in the back of this manual). Do not reset
the model unless you are certain you want to clear-out that memory and start from scratch.
When actually setting up a model you should have the model in front of you with the power on so you can actually see the
effects of your programming inputs and measure the control throws.

15
ACRO/HELI Model type select function
The Model type select function is used to select the ACRO or HELI mode of model type.
ACRO: Powered aircraft memory type (with multiple wing and tail configurations. See Wing mixing type selection for further
information, p20.)
HELI: Helicopter memory type (with three helicopter swashplate type. See Swashplate types selection for further information,
p28.)
CAUTION: Before doing anything else to set up your aircraft, first you must decide Model type (include wing mixing type or
swashplate type) best fits this particular aircraft.
To select model type:
1. Access the Model Select function in the programming mode (by pressing the MODE and
SELECT keys simultaneously and holding them down for one second). To select the model
memory you wish to select model type press the DATA INPUT lever and hold it down for 0.5
seconds until the desired model number appears.
2. Push SELECT key twice after seeing on the screen the model memory where you want to
select model type, then you will see “ACRO” or “HELI” on the screen.
3. To change model type, push the DATA INPUT lever and hold it down for about two seconds.
“HL” and “AC” blinks first, and then it stops blinking with a sound. The current model type
“ACRO”or “HELI”is displayed.
PULS Modulation select function
The Modulation select function is used to select the PPM or PCM mode of transmission, to
match the receiver being used (PPM-Pulse Position Modulation, also called FM for Frequency
Modulation, and PCM-Pulse Code Modulation).
To select modulation:
1. Access the Model Select function in the programming mode (by pressing the MODE and
SELECT keys simultaneously and holding them down for one second). To select the model
memory you wish to modulation select press the DATA INPUT lever and hold it down for 0.5
seconds until the desired model number appears.
2. Push SELECT key three times after seeing on the screen the model memory where you
want to set modulation, then you will see “PULS” on the screen.
3. To select PCM modulation, push the DATA INPUT lever up. The “PCM”is displayed. To
select PPM modulation, push the DATA INPUT lever down. The “PPM”is displayed.
4. To get the transmitter to operate in the new mode, switch transmitter power off and then on.
The small indicator will indicate the mode, either PPM or PCM.
TRNR Trainer function (ACRO only)
The Trainer function is used to activate the trainer switch each model memory as the
instructors’ transmitter. See Trainer switch for further information, p33.
To activate trainer function:
1. Access the Model Select function in the programming mode (by pressing the MODE and
SELECT keys simultaneously and holding them down for one second). To select the model
memory you wish to activate trainer function press the DATA INPUT lever and hold it down
for 0.5 seconds until the desired model number appears.
2. Push SELECT key four times after seeing on the screen the model memory where you want
to activate trainer function, then you will see “TRNR” on the screen.
3. To activate the function, push the DATA INPUT lever up for 0.5 seconds. The “ON”is
displayed. To inhibit the function, push the DATA INPUT lever down for 0.5 seconds. The
“INH”is displayed.

16
Model name function
Assign a name to the model memory. By giving each model a name that is immediately recognizable, you can quickly select
the correct model, and minimize the chance of flying wrong model memory that could lead crash.
To assign a name
1. Access the Model Select function in the programming mode (by pressing the MODE and
SELECT keys simultaneously and holding them down for one second). To select the model
number you wish to change press the DATA INPUT lever and hold it down for 0.5 seconds
until the desired model number appears..
2. Push SELECT key five times after seeing on the screen the model memory where you want
to set the model name, then you will see the model name on the screen.
3. Choose a character for the first digit by using DATA INPUT lever. Then move to the next digit
by pressing the SELECT key and choose a character in the same way. Continue choosing
characters for the third and fourth digits.You can use up to four characters for the name.
REVR Servo Reversing
The servo reversing function is used to change the direction that a servo responds to a control input from the transmitter
(stick or switch). After using the reversing function, check all the controls on the model to be certain they are operating in the
correct direction and that you did not inadvertently reverse a servo other than the one intended. Reversing the wrong servo (and
not checking the response of the controls before each flight) may be the most common cause of a crash!
To reverse a servo:
1. Enter the programming mode and use the MODE key to access the REVR function.
2. Use the SELECT key to select the channel you wish to reverse.
3. Push the DATA INPUT lever downward for 0.5 seconds to reverse the servo (REV), or push
the lever upward for 0.5 seconds to make the servo operate normally (NOR). The arrow will
indicate the condition of the servo (normal or reversed).
4. Use the SELECT key to display other channels to be reversed.
Dual Rates / Exponential Settings
The aileron, elevator and rudder dual rates on the 6EXHP are simultaneously activated by the dual rate switch. The amount of
travel decrease for each control may be set between 0% and 100% of the values set for the end points (explained in End Point
Adjustment on page 17).
Note: It is possible to set a dual rate value to zero, thus causing no response from that channel. If the dual rates are
inadvertently set to zero, a crash could result.
Note: When performing initial model setup, the E.P.A.s should be set prior to setting the dual rates. When setting the E.P.A.s
for the first time on a new model, the dual rates should be set to 100%.
D/R Dual Rate Settings
To set the dual rates:
1. Enter the programming mode. Access the “D/R”screen with the MODE key.
2. Select the channel to be adjusted (1-aileron, 2-elevator, 4-rudder) by pressing the SELECT
key until the desired channel number the left side on the screen. Note: If a “EXPO”will
appear on the screen, you have pressed the SELECT key too many times and displayed
the values for the exponentials (explained later). Press the SELECT key to return to the dual
rate values.
3. Place the dual rate switch in the desired position for the value you wish to change. (Generally,
pilots prefer to have the switch in the “up” position for the high rate, and in the “down”
position for the low rate.)
4. Change the dual rate value using the DATA INPUT lever until the desired control throw is achieved. If you wish to change
the control throw when the switch is in the other position as well, flip the switch, then use the DATA INPUT lever to change

17
the throw.
5. Repeat the procedure for the other dual rate (channel 2-elevator, 4-rudder).
EXPO Exponential Settings
The “exponentials” are in the same function as the dual rates. (Pressing the MODE key will take you to the next function which
is End Point Adjustments). The same as dual rates, “expos” can be set for both switch positions. Negative exponential (-)
decreases initial servo movement. Positive exponential (+) increases initial servo movement. The exponential “curve” may be
set anywhere between -100% and +100%.
To set the exponentials:
1. Enter the programming mode. Access the “D/R”screen with the MODE key.
2. Access the “EXPO”screen with the SELECT key.
3. Select the channel (1-aileron, 2-elevator, 4-rudder) you wish to set by pressing the SELECT
key. The active channel number will be displayed on the screen Note: If a “D/R” will appear
on the screen, you have pressed the SELECT key too many times and displayed the values
for the D/R (dual rate values). Press the SELECT key to return to the exponentials.
4. Position the dual rate switch where desired for the value you wish to change.
5. Enter the amount of exponential with the DATA INPUT lever. (As stated above, an exponential value with a “-” in front of it
makes the initial servo movement less, or “softer. ”)
6. Flip the switch to the other position to enter the exponential value for that switch position.
7. Repeat for the settings on the other channel.
EPA End Point Adjustment
Note: Since changing the “end points” will also change the dual rates, the end points should be set prior to setting the dual
rates. If you set the dual rates first, and then go back and change the end points, the dual rate throws will also change.
The EPA function is designed to “fine tune” the servo throws in cases where changing the
pushrod hookup will not achieve the correct throw. The pushrods should first be connected
to the servo arms and control horns so that the correct, or near correct control surface throw
will be achieved. THEN the EPAs may be used to make small changes in the servo throw
until the desired control throw is achieved. The control throws should be set up so that the
“end points” are as near to 100% as possible. If the EPA values must be set below 70% or
above 120% to get the desired throw, you should strongly consider changing the pushrod
connections so the values can be set closer to 100%. (When the EPA is set to 100% the
maximum servo throw for channels 1, 2, 3 & 4 is approximately 40°and approximately 55°
for channels 5 & 6.)
To set the end points:
1. Enter the programming mode and use the MODE key to access the “EPA”screen. The
channel number being adjusted will the left side on the screen and the “%” symbol will be
flashing.
2. To change the RIGHT aileron throw move the aileron stick to the right, then push the DATA
INPUT lever up or down to change the value and the throw.
3. Move the stick to the left and use the DATA INPUT lever to change the LEFT aileron throw.
4. Use the SELECT key to display the other channels and set the other end points. Notice that
moving the stick (or switch or dial) from one end to the other changes the value displayed
and the position of the arrow for that “end” of the control input.

18
TRIM Trim Settings
There are four trim levers (“trims”) on the front of the transmitter. Three of the trims are for adjusting the neutral position of the
aileron, elevator and rudder servos. The fourth trim is for setting the idle r.p.m. of the engine when the throttle stick is all the
way down. The intended use of the trims is to make small servo adjustments, in flight, to get the model properly “trimmed” (so
it will fly straight-and-level). Because the trims are intended to be used while the model is in flight, you do not have to “enter
the program” to adjust the trims. Simply push or pull on the trim levers while flying and the neutral position of the servos will
shift. Keep in mind that you should start out with the control surfaces centered when the servos are centered and the trims are
“zeroed” (or near zero). THEN you can adjust the trims once airborne.
Center the servos:
1. Turn on the transmitter and receiver. Operate the controls to make sure the servos respond in the correct direction. Use the
reversing function to reverse any servos necessary.
2. Center the throttle control stick.
3. Place the servo arms on the servos so they are perpendicular to the pushrods (see page 8). It is okay to cut off any unused
servo arms.
4. Connect the pushrods to the control surfaces. Adjust the length of the pushrods until the control surfaces are centered when
the servos are centered.
Note: The throttle trim affects the throttle servo only when the throttle stick is below “1/2 stick.” This way, the final closing of
the carburetor can be adjusted without affecting the servo throughout the rest of the range.
To adjust the trim settings:
Once the servos and control surfaces have been connected and the control throws have been set using the end points and
dual rates, get the model airborne. Adjust the trims as necessary to get the model to fly straight-and-level. If much trim is
required on any one control it is a good idea to readjust the pushrods so the trims can be returned to neutral (zero). Adjusting
the trims with the trim levers changes the servo’s position in increments of “4.” If finer adjustments are required, land the
model, then enter the program as described below to adjust the trims in increments of “1.”
1. Enter the programming mode and use the MODE key to activate the TRIM menu.
2. Press the SELECT key to display the channel to be adjusted (the figure shows trim
adjustment for CH1).
3. Adjust the trim using the DATA INPUT lever. Note that initially, the values change in
increments of “1,”but if the DATA INPUT lever is held long enough the values will change
more rapidly.
4. Repeat the steps for other channels that require trim adjustments.

19
PMIX1/2 Programmable Mixer 1/2 (ACRO only)
Unlike the “wing mixing” function (explained later) where the channels to be mixed are factory-set, the T6EXP also contains
two programmable mix where the you, the pilot determine the channels to be mixed. This could be used to correct unwanted
flight tendencies (by mixing rudder to aileron, or aileron to rudder for example).
To set up a programmable mix:
1. Enter the programming mode. Access the “PMIX” screen with the MODE key.
2. Push the DATA INPUT lever upward for 0.5 seconds. This will cause the flashing “INH”
display to change to a flashing “ON” display.
3. Push SELECT key to call the screen for selecting channels to control “MAS” (Master)
mixing. Then select the channel by pushing DATA INPUT lever . Channel 1 (aileron) in this
figure is assigned to the master.
4. Push SELECT key to call the screen for selecting channels to control “SLV” (Slave) mixing.
Then select the channel by pushing DATA INPUT lever. Channel 4 (rudder) in this figure is
assigned to the slave.
5. Press the SELECT key twice to display the flashing % sign. Use the DATA INPUT lever
to set the percentage of mixing from -100% to +100% (depending on the direction and
distance you wish the slave servo to move).
6. Push SELECT key to call the screen for selecting the on/off switch. Then select the switch
by pushing DATA INPUT lever. CH5, D/R, or FLP switch (include the on direction) is
selectable. The “ON” is “always on”.
7. Observe how the controls on the model respond to be certain you have achieved the correct
mix and that the throws are as desired.

20
Wing Mixing Type Selection (ACRO only)
With the programmable mix (previously described) the user determines the two channels to be mixed. The wing mixing
function is another mix that may be used, but the channels mixed are predetermined. There are three different wing mixing
functions to select from:
*If necessary, use the Servo Reversing
function to achieve the correct direction of
servo throws.
FLPR Flaperon mixing (ACRO only)
This function allows the ailerons to be used both as ailerons and as flaps. The flap
control dial (CH 6) operates the flap function. To use flaperon mixing both ailerons
must be operated by separate servos.
To activate flaperon mixing:
1. Connect the aileron servo in the right wing to channel 1 (aileron) in the receiver and connect
the aileron servo in the left wing to channel 6 (flaps) in the receiver.
2. Enter the programming mode. Access the “FLPR” screen with the MODE key.
You cannot set “Flaperon” mixing when “Elevon” mixing has already been set. In order to
enable “Flaperon” mixing, you first need to cancel “Elevon” mixing. However, it is allowed to
use “Flaperon” and “V-Tail” mixing simultaneously.
3. Push the DATA INPUT lever upward for 0.5 seconds. This will cause the flashing “INH”
display to change to a flashing “ON” display. Now the mixing is on.
4. If needed to set ailerons differential. Press the SELECT key to display the flashing “%” sign.
Use the DATA INPUT lever to set the percentage of ailerons differential from -100% to
+100% (The “-” direction indicates decreasing amount of movement toward the upward from
the aileron surface, while “+” direction indicates decreasing amount of movement toward the
downward from the aileron surface.)
5. Once this mix has been activated, move the servos to their full extremes to make certain
they are not overdriving the controls. If necessary, adjust the linkages to achieve the correct
control throws.
FLTR Flap trim (ACRO only)
The Flap Trim function is used to specify the amount of flap travel produced moving the flap switch. As normal flap switch will
be inhibited to use if the flaperon function is activated, the Flap Trim function should be activated if you need to control flap by
Flap switch.