The Tactic™ TTX403 Micro airplane radio system uses an advanced 2.4GHz spread
spectrum technology to prevent unwanted outside interference from interrupting
control of the model, ensuring error-free fl ying and eliminating the need to pull
frequency pins before every fl ight. Tactic 2.4GHz transmitters and receivers are not
compatible with other brand 2.4GHz equipment.
For safe operation and best results, it’s strongly recommended to
read this manual in its entirety before use! Also read and understand
the instructions included with the model. Damage resulting from
misuse or modifi cation will void your warranty.
FEATURES
2.4GHz 4-Channel Micro Spread Spectrum Radio
Instruction Manual
™
TACJ2403
● 2.4GHz frequency hopping spread
spectrum technology
● Tx can link to Tactic SLT 2.4GHz
receivers
● Digital trims with power status LED
● Built-in charger for 1S micro LiPo
batteries
● V-Tail Mixing
● Elevon Mixing
● Channel Remapping
2
TTX403 TRANSMITTER (Tx)
The TTX403 4-Channel Micro airplane transmitter can be confi gured to operate
as a 3-channel or 4-channel Tx. When confi gured for 4-channel operation the
controls function like a normal Mode-2 transmitter with aileron + elevator on the
right stick, and throttle + rudder on the left stick.
Confi guring the Tx for 3-channel operation can help beginners concentrate on
throttle control with one hand and full airplane directional control with the other hand.
Here, the right stick operates elevator + rudder while the left stick will control the
throttle. The aileron function will still be active, and now be on the left stick, but aileron
control is often not needed for 3ch aircraft.
To change the TTX403 transmitter between 3ch and 4ch confi gurations:
1. Turn off the Tx power switch.
2. Move the right stick to the topright corner, and the left stick to
the top-left corner, and hold in
these positions.
3. Move the Tx power switch to the
on position. The power LED will
fl ash, accompanied by three
short tones from the Tx which
indicates the Tx confi guration
has been changed.
NOTE: Each time the Tx power switch is turned on you will hear either one
short tone if the Tx is in the 3ch configuration, or two short tones if the Tx is
in the 4ch configuration.
Input Power
Five “AA” batteries are required to power the Tx (not included with individual radio
systems). Non-rechargeable 1.5V alkaline, or 1.2V rechargeable nickel-cadmium
(NiCd) or nickel-metal hydride (NiMH) cells can be used. Do not mix cell types, old
and new cells, etc. See the SERVOS AND ACCESSORIES section on page 12 for
optional products available at local hobby retailers.
3
Slide the battery door down,
and insert the cells as shown.
Make sure to note proper
polarity for each cell. Close the
battery door.
Power LED and Low Battery Alarm
The red power LED should light when the power switch is moved upwards to the
on position. The Tx should have adequate power for fl ight when the LED is on
constantly. Anytime the LED begins to fl ash, accompanied by an audible tone, the
Tx battery voltage has dropped too low and operation of the model should NOT
be attempted!
WARNING! Never operate an R/C model with weak Tx batteries!
Reduced operational range and/or possible loss of control of the
aircraft could result. Replace weak alkaline batteries, or recharge
NiCd or NiMH batteries before attempting a fl ight!
If during a fl ight audible tones sound and the Tx LED starts to fl ash the Tx batteries
have become weak and the aircraft should be landed as soon as possible!
Aileron (Ch 1)
Controls the moveable surfaces at the trailing edge of the main wings to rotate the
airplane about the “roll” axis (an imaginary line which extends from the airplane’s
nose to the tail). Since every airplane is different, the direction of movement for
the aileron channel may need to be reversed so that moving the aileron stick to
the right will cause the airplane’s right aileron to defl ect up, thus causing the right
wing to drop and the airplane will bank to the right. Moving the aileron stick to the
left will cause the airplane’s left wing to drop and the airplane will bank to the left.
This is one important method for turning the aircraft. When the Tx is set to the 3ch
confi guration the aileron channel will not be used.
Elevator (Ch 2)
Controls the moveable horizontal surfaces on the airplane’s tail to rotate the airplane
about the “pitch” axis (an imaginary line extending through the center of both main
wings, from one wing tip to the other wing tip). The direction of movement for the
elevator channel may need to be reversed so that pulling the elevator stick back
(towards you) will cause the elevator to defl ect up, thus causing the nose of the
4
airplane to rise. Pushing the elevator stick forwards (away from you) will cause the
nose of the airplane to drop.
Throttle (Ch 3)
Controls the speed (R.P.M.) at which the motor operates. Pulling the throttle stick
back will cause the motor’s speed to decrease. Pushing the throttle stick forward
will cause the motor’s speed to increase.
Rudder (Ch 4)
Controls the side-to-side movement of the airplane’s tail and will rotate the airplane
about the “yaw axis” (an imaginary line from the top of the airplane’s fuselage to the
bottom of the fuselage, located near the center-point of the fuselage). The direction
of movement for the rudder channel may need to be reversed so that moving the
rudder stick to the right causes the rudder to defl ect to the right, thus causing the
nose of the airplane to point to the right. Moving the rudder stick to the left will cause
the nose of the airplane to turn left. When the Tx is set to the 3ch confi guration the
rudder will be controlled by the right stick. Otherwise, rudder is controlled with the
left stick.
Trims
All trims are digital in function. Two trim buttons are included for each of the main
controls, located adjacent to the respective stick. One trim button adjusts the
servo’s direction in one direction, and the other button to the opposite direction.
Briefl y pressing any trim button will adjust the center position of the respective
servo output in the appropriate direction and will be accompanied by an audible
tone. Pressing and holding any trim button will cause the servo output to move
repeatedly. A unique tone will sound when the servo reaches either end of the trim
limit, and at the channel’s center point.
During a fl ight, when the main sticks are released and spring back to center position
the aircraft should ideally not veer in any direction. If the aircraft does veer in a
particular direction, press the respective trim button until the aircraft maintains a
straight attitude on its own.
Reversing Channel Direction
The direction of movement for any of the four channels can be reversed electronically.
To change the direction of movement for any channel:
1. Switch off the Tx power switch.
2. Press and hold either trim button for the channel to be reversed.
3. Switch the Tx power switch on. The LED should fl ash to indicate the
movement for that channel has been reversed.
4. Repeat steps 1-3 to reverse the direction of any other channel as needed.
5. Switch the Tx power switch off.
5
Elevon & V-Tail Mixing Functions
The TTX403 includes elevon and V-tail mixing functions, which can be turned on or
off. “Elevon” control consists of a mixture between the elevator and aileron channels,
and is useful for certain types of aircraft (such as a fl ying wing). “V-tail” control
consists of a mixture between the elevator and rudder channels and is useful for
aircraft which have a V-tail. The default setting for all mixing will be “off”. To change
the mix setting:
1. With the Tx power switch off, move
the right stick to the bottom-right
corner, and the left stick to the bottomleft corner.
2. While holding the sticks in
these positions, turn the Tx power
switch ON.
3. The transmitter will emit
three rapid tones to confirm the
programming has been changed.
The LED will then flash once
simultaneously with one tone (3ch
config) or two tones (4ch config) during powerup. This single flash indicates
that the transmitter is in V-Tail mixing and the LED will remain solid afterwards.
V-Tail Mixing
Left Rudder
ch2 ch4 ch2 ch4 ch2 ch4
Right Rudder Up Elevator
4. To cancel V-tail mixing and activate elevon mixing, turn off the transmitter and
repeat the above procedure. When the LED fl ashes twice during powerup the
elevon mix is enabled and the LED will remain solid afterwards.
Elevon Mixing
Elevator Function
Aileron
Function
5. To cancel all mixes, repeat this procedure again. When the LED remains solid, all
mixes will be off.
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