Tower Hobbies 424 User manual

Brand: Tower Hobbies

Model: 424

Category: Toys & accessories

Type: User manual

This manual is also suitable for

424 4-Channel 2.4GHz Tx/Rx

Tower Hobbies 424 is a versatile 4-channel radio that provides precise control for a wide range of model aircraft, from fixed-wing planes to helicopters and drones. Its SLT technology ensures a strong, clear, 2.4GHz signal, and the built-in telemetry system allows you to monitor critical flight data such as battery voltage, signal strength, and altitude. The 424 also features digital trims for fine-tuning your control surfaces, as well as reversing switches for each channel to accommodate different servo configurations.

FEATURES

SLT TECHNOLOGY, TX-R, & COMPATIBLE RECEIVERS

It is strongly recommended to completely read this manual before use!

Damage resulting from misuse or modification will void the warranty.

• Power LED with low voltage warning

• Wireless training function

• Digital trims for aileron, elevator, rudder

• Gimbals with smooth ball-bearing feel

• Charge jack for optional rechargeable batteries

• Failsafe in the included receiver

This radio includes SLT technology to ensure a strong,

clear, frequency-hopping 2.4GHz signal is emitted, and

that your compatible receiver accepts a signal only from

your transmitter. Linking the included Tower Hobbies

brand receiver is accomplished by the simple push of a

button. This radio is also compatible with all transmitter-

ready aircraft bearing the Tx-R™ logo, and Tactic and other brand receivers

having the SLT* protocol.

* Make sure optional receivers have the genuine SLT protocol before use with this radio.

PREFLIGHT PREPARATIONS

Pay special attention to all precautions and warnings to ensure the safest operation.

This radio system is intended for sport and recreational ﬂ ying of R/C models only.

Tower Hobbies is not responsible for incidental damage or personal harm resulting

from improper usage or unauthorized alteration of this product. Physical modiﬁ cations

of any component in this system will void the warranty. For best results, make sure

all batteries are new (if alkalines) or fully charged (if rechargeable). Connect servos

to the receiver and try to adjust the radio on the workbench while reading along with

this instruction manual to understand all functions.

TRANSMITTER

Reversing Switches

On/Off Switch Trim Lever

Power Indicator LED

Neck Strap Eyelet

Trainer Switch

AILERON

(

RUDDER

INPUT POWER: This transmitter (Tx) requires four “AA”

batteries. Non-rechargeable 1.5V alkaline or rechargeable

1.2V nickel-cadmium (NiCd) or nickel-metal hydride

(NiMH) cells can be used (not included). Do not mix old

and new cells, or mix non-rechargeable alkaline cells with

rechargeable NiCd or NiMH cells, etc. See the Accessories

section at the end of this manual for optional batteries.

To install the batteries, slide open the battery door. Install

the batteries as shown in the diagram. Make sure to note

the proper polarities on each cell. Close the battery door.

CHARGE JACK: A built-in charge jack is included for recharging of NiCd or NiMH

rechargeable batteries. This jack can accept charge leads designed for Tactic brand

transmitters, with the center pin being positive polarity. This jack is NOT compatible

with charge leads designed for other radio brands. If using rechargeable batteries,

make sure to only use a charger which is compatible with those battery types.

Make sure the Tx power switch is OFF to charge the batteries through the charge

jack. Connect the charge lead to the charger ﬁ rst, then to the Tx charge jack. Follow

the instructions included with the charger. Charge leads such as TACP0101 – Tx

Rx Charge Leads from Tactic are recommended for use with this transmitter.

IMPORTANT: Do not operate an R/C model with weak batteries as it

could result in reduced range and/or possible loss of control. Failure to

obey this warning could result in destruction of the model and possible

bodily injury. Only use the charge jack to recharge rechargeable cells. Never attempt

to recharge alkaline batteries. Do not accidentally short circuit the terminals inside

the charge jack as permanent damage could result and void the warranty. Do not

charge batteries at currents greater than 1 amp through this charge jack. Misuse,

improper charging, or over-charging of rechargeable cells can result in damage to

the cells that could include cell rupture, explosion, or ﬁ re!!

ON/OFF POWER CONTROL AND LED WITH LOW BATTERY ALARM:

Move the power switch to the “ON” position. The red LED should illuminate. If the LED

stays on constantly the batteries have ample power for a ﬂ ight. If the LED is ﬂ ashing,

and also accompanied by beeps, the transmitter’s batteries have become weak and

require replacement or recharge prior to attempting a ﬂ ight. If this alarm activates

during ﬂ ight land the aircraft immediately to avoid a possible loss of all control!

GIMBAL STICKS: The length of each control

stick can be adjusted for preferred feel. With a

5/64" hex wrench, loosen the set screw inside the

tip of the stick. Turn the tip of the stick counter-

clockwise to lengthen the stick. Turn the tip of the

stick clockwise to shorten the stick. Tighten the

set screw once the desired length is found.

AILERON: Channel 1 controls the airplane’s ailerons. These moveable surfaces

at the end of the wings rotate the airplane about an imaginary line which extends

from the airplane’s nose to the tail called the “roll axis”. Moving this stick to the

right should cause the aileron on the right wing to move upwards, causing the right

wing to dip and bank the plane to the right. Conversely, moving the stick to the left

should cause the left wing to dip and bank the plane to the left. If movement of

the stick causes the aileron surfaces to move in the opposite direction, move the

reversing switch for aileron channel 1 to the opposite position.

ELEVATOR: Channel 2 controls the airplane’s elevator. These moveable surfaces

on the tail rotate the airplane about an imaginary line which extends through the

center of both wings from wing tip to wing tip, known as the “pitch axis”. Moving

the elevator stick upwards should cause the plane’s elevators to move upwards,

causing the nose of the airplane to rise. Moving the stick down should cause the

plane’s elevators to move down, and cause the nose of the airplane to drop. If

movement of the stick causes the elevator surface to move in the opposite direction,

move the reversing switch for elevator channel 2 to the opposite position. To help

maintain the airplane’s altitude while performing a bank turn, gently pull back on

the elevator stick while deﬂ ecting the ailerons.

THROTTLE: Channel 3 controls the airplane’s throttle. Pushing the throttle stick

forward should cause the R.P.M. of an electric motor or combustion engine to

increase. Pulling the throttle stick down (away from the Tx handle) should cause

the motor or engine’s R.P.M. to decrease. If movement of the stick causes the

throttle to move in the opposite direction, move the reversing switch for throttle

channel 3 to the opposite position.

RUDDER: Channel 4 controls the airplane’s rudder. This moveable surface on

the tail moves sideways and rotates the airplane about an imaginary line from

the bottom of the airplane’s fuselage upward through the center to the top of the

fuselage, known as the “yaw axis”. Moving the rudder stick to the right should cause

the rudder to move to the right, and cause the airplane’s nose to point to the right.

Moving this stick to the left should cause the rudder to move to the left, and cause

the airplane’s nose to point to the left. Using the rudder along with aileron controls

can point the airplane’s nose into a turn without pitching up or sliding through the

turn. If movement of the stick causes the rudder surface to move in the opposite

direction, move the reversing switch for rudder channel 4 to the opposite position.

TRIMS: Each of the four channels includes a trim lever, located directly adjacent

to the main control stick. Trim levers are used to ﬁ nely adjust the center position of

the respective channel.

The trims for aileron, elevator, and rudder channels function digitally. The levers

always rest at mechanical center position. Brieﬂ y pressing the spring-loaded lever

to either side of center position will adjust the center position of the respective

channel electronically, and can be observed on the servo. Holding the trim lever

to either side of center will cause the servo output to rotate repeatedly. Finely

trim each of these channels so that during ﬂ ight the model does not veer in an

unwanted direction when the main sticks are released and back at center position.

The throttle channel includes a “mechanical” or analog trim lever. This trim lever can

be physically moved up or down and rest at any point in the range of movement.

The mechanical position of the lever will adjust the throttle channel’s electronic

position, and can be observed on the servo. This can ﬁ nely adjust the engine/

motor’s speed, and is especially useful at low speeds when the model is on the

ground - and only functions when the main throttle stick is below 50% full throttle.

When using a combustion engine use the throttle trim to precisely determine the

engine’s preferred idle point.

REVERSING SWITCHES: A reverse switch is included for each channel.

Changing the position of a reversing switch changes the direction of movement

for that respective channel. Moving the position of the reversing switch can often

be the easiest way to alter the direction of a servo’s movement aside from making

mechanical changes in the model. Refer to the transmitter’s faceplate to properly

identify the different reversing switches. See the model’s instructions for speciﬁ c

details relating to operation of the model.

TRAINER FUNCTIONS

The Tower Hobbies 424 radio includes a wireless trainer function. This radio can

also be connected by wireless means to another Tower Hobbies 424 transmitter or

Tactic™ brand transmitter having the wireless trainer function for the purpose of

teaching a student how to ﬂ y. It’s not possible to connect this radio to other brand

radios for wireless training. This radio can be used either by the teacher or student.

IMPORTANT! Before operating a model in training situations make

sure the reverse settings and trim adjustments for all channels match

on both the teacher and student’s transmitters. Failure to do this could

cause the model to suddenly veer in an unexpected manner when the teacher’s

trainer switch is activated. Proper matching of settings is especially important for

the throttle channel!

1. Link the radio being used by the teacher to the receiver inside the model. Then

turn the receiver’s power switch off.

2. Move the throttle stick for both the teacher and student’s transmitter to the idle

position. Locate both the teacher and student’s transmitter within 1 meter of

each other.

3. Turn the student’s transmitter power switch ON.

4. Pull and hold the trainer switch on the teacher’s transmitter. Then, turn the

teacher’s power switch ON.

5. Observe the LED on the teacher’s transmitter. If it ﬂ ashes three times the

teacher’s transmitter has linked to the student’s transmitter.

6. Release the trainer switch on the teacher’s transmitter.

7. After the transmitters are linked, power can be applied to the receiver inside

the model and conﬁ rm the teacher has full control of the aircraft. Make sure

both transmitters are kept within 15 feet of each other at all times while training.

8. During ﬂ ight, pulling and holding the teacher’s trainer switch will transfer control

of the model to the student. Control of the model can be returned immediately

to the teacher by releasing the trainer switch.

9. After the model is back on the ground and the training session has ended and

power is safely removed from the model, turn OFF the power switch of both

transmitters. This will break the wireless link between the transmitters. Return

to step 1 above to re-establish the wireless link for additional training.

V-TAIL AND ELEVON MIXING

This radio includes mixing functions for controlling models having elevons on the

wings or a V-tail. Certain model types have a tail shaped like a “V”, instead of

the normal “T” shape. Mixing the transmitter’s elevator and rudder channels can

allow for independent and combined control of both the “pitch” and “yaw” axes.

Other airplane types, such as ﬂ ying wings or “delta” wing models, do not include a

traditional tail with elevator surfaces. Yet, control of the model’s “roll” and “pitch” axes

is still required. Mixing the transmitter’s elevator and aileron (“elevon”) channels

can allow for independent and combined control of both the “roll” and “pitch” axes.

To set or change the mix setting:

1. As shown, with the transmitter

power switch in the OFF position

hold the right stick in the bottom-

right corner, and hold the left stick

in the bottom-left corner.

2. Turn the transmitter power

switch ON.

3. The LED should ﬂ ash. If two beeps also sound the v-tail mix has been activated.

Check for proper operation of these channels. If the elevator or rudder controls

inside the model move backwards, it may be necessary to trade the servo

connections to channel 2 and channel 4 at the receiver. If V-tail is the desired mix

move to the next section.

V-Tail Mixing

Left Rudder

ch2 ch4 ch2 ch4 ch2 ch4

Right Rudder Up Elevator

4. To instead activate the elevon (delta wing) mix, turn the Tx power switch OFF

and repeat steps 1-3 above. Three beeps accompanying the ﬂ ashing LED indicates

the elevon mixer is activated. If the elevator and aileron surfaces appear to move

backwards it may be necessary to trade the servo connections to channel 1 and

channel 2 at the receiver.

Elevon Mixing

Elevator Function

Aileron

Function

5. To cancel all mixes, again perform steps 1-3 above. One beep accompanying the

ﬂ ashing LED indicates all mixes are off, with normal wing and tail controls.

FLIGHT EQUIPMENT INSTALLATION

LED Link button

CH4 Rudder servo

CH3 Throttle

CH2 Elevator servo

CH1 Aileron servo

BAT Battery

(electronic speed

control or servo)

RECEIVER (RX): Follow the instructions included with the model for installation

of the receiver. It’s a good idea to protect the Rx by wrapping it with foam rubber,

and attach it ﬁ rmly inside the model to prevent unwanted movement during ﬂ ight.

Rudder

Servo

(Ch4)

Receiver

Throttle

Servo

or ESC

(Ch3)

Elevator

Servo

(Ch2)

Aileron

Servo

(Ch1)

Switch Harness

To Rx Battery

To Charger

6-CHANNEL RECEIVER

SPREAD

SPECTRUM

SERVOS: Servos are not included with this radio and must be purchased

separately. Follow the instructions included with the model for installation of the

servos. Center all trims on the transmitter. Connect linkages properly, but do not

over-tighten the mounting screws as servos should have slight movement to

compensate for engine vibration. Pushrods should be snug and not bind during

movement, and allow the servo to have full range of movement by moving the Tx

sticks to maximum rotational positions several times while observing the movement

of the control surfaces. Adjust linkages as necessary to prevent unwanted battery

drain due to linkage/pushrod obstructions. Connect the servos to the receiver as

shown in the diagram. Make sure to install wires to not interfere with other moving

parts inside the model.

ELECTRIC MODELS: For models using electric power for ﬂ ight, an optional

ESC (electronic speed control) is needed to control speed of the motor. Most ESCs

also supply power to the receiver. Refer to the ESCs instructions to determine the

proper way to connect the ESC to receiver output slot 3 (throttle). Make sure the

transmitter’s throttle trim is at center, and follow the ESC instructions for connecting

the battery and setup for operation. Most ESCs also include an ON/OFF power

switch to control power to the ESC/ﬂ ight system.

COMBUSTION MODELS: If using a glow or gasoline motor to power the model,

a battery must be installed to supply power to the receiver and servos. “AA” NiCd

or NiMH rechargeable batteries can be installed in the included battery holder

(never use alkalines inside the model), or an optional assembled battery pack can

be used. See the Accessories section on page 11 for battery options. The included

switch harness can be connected between the battery and receiver, to conveniently

turn power ON/OFF to the ﬂ ight electronics. Connect one end of the switch to the

receiver’s battery socket, and the opposite end to the battery. The third lead on the

switch harness is for connecting a battery charger for rechargeable batteries. Make

sure the switch harness is in the OFF position to recharge batteries through the

harness. Refer to the model’s instructions for installation recommendations for the

receiver, battery, and switch harness.

LINK THE RECEIVER TO THE TRANSMITTER

Linking the 424 transmitter to the included receiver allows for direct communication

between the two, and ensures no other radio equipment can interfere with operation.

Move the transmitter throttle stick to minimum. Turn the transmitter power switch ON

IMPORTANT! Always turn the transmitter on before the receiver,

and move the transmitter’s throttle stick to minimum (idle) position.

Otherwise the model could power out of control and possibly result

in personal injury and damage to the surroundings.

2. Turn the receiver switch harness or ESC switch to ON.

3. Link the receiver to the transmitter. Insert a small diameter screwdriver through

the hole marked “LINK” on the receiver, and press and hold the button inside the

hole. The receiver’s red LED will illuminate through the plastic case. Then, it will

turn off after approximately one second. Release the pushbutton. The red LED

will ﬂ ash once and then stay on if linking was successful.

NOTE: After the initial linking, when power is again applied to the system, if

the receiver’s Rx LED ﬂ ashes once and then stays on, the Rx is already linked.

There will be no need to re-link the receiver to the transmitter.

4. Test for proper operation of the transmitter and receiver system before use. If

a link was not established, move the transmitter away from the receiver by a

distance of approximately 3 feet. Then repeat steps 1-3 above to re-link.

FAILSAFE FUNCTION

The failsafe function for this radio system is established in the receiver. If the control

signal from the transmitter is suddenly lost, the receiver will automatically activate

the failsafe. The aileron, elevator, and rudder channels (1,2, and 4) will hold the last

positions as received. Throttle channel 3, however, can be set to move to a speciﬁ c

position if desired. The factory default position for the throttle channel is minimum

throttle (0%), and can be manually changed as follows:

1. Turn the transmitter power switch ON. Make sure all reversing switches are in the

proper position for the application.

2. Turn the receiver’s power switch ON (switch harness, or ESC switch if used).

If an ESC will be used do NOT arm the ESC at this time. If the ESC has already

been armed do not try to adjust the throttle’s failsafe position. If using a speed

control which includes a safety feature for when radio signal is lost, the receiver’s

failsafe function will instead control throttle operation. If using a combustion engine

instead, do not adjust the throttle’s failsafe setting while the engine is running.

4. Move the Tx throttle stick to the position preferred for failsafe.

5. Press and hold the LINK button on the receiver. After the receiver’s red LED

blinks twice, release the LINK button. The LED should then turn on and stay

illuminated to indicate the failsafe position for the throttle channel is set.

PREFLIGHT CHECK

IMPORTANT! Remove the propeller from the aircraft before performing

the ﬁ nal checks on the aircraft before a ﬂ ight. Always apply power to

the transmitter before applying power to the receiver. Make sure the

transmitter’s throttle stick is at minimum position. Otherwise personal injury and

damage to the surroundings could result if the model’s propeller begins to spin

suddenly. If the transmitter must be set down, always lay it on its back so it cannot

fall over and accidentally move the throttle stick away from minimum (idle) position.

Check that all components inside the model are securely in place, including wires,

connections, etc. so they cannot become separated during ﬂ ight.

1. Move the transmitter’s throttle to minimum position (idle).

2. Turn the transmitter’s power switch ON. Then apply power to the receiver.

3. Check for proper operation of all controls in the model by moving the controls on

the radio. Make sure servos are rotating in the proper direction and all linkages

are moving properly.

4. With both transmitter sticks at center, check to make sure the transmitter’s

aileron, elevator, and rudder trim levers properly move their respective control

surfaces, and align each control with the main surface on the model. Make sure

the rudder is perfectly aligned with the tail’s vertical stabilizer, the elevator is

perfectly aligned with the horizontal stabilizer on the tail, etc.

Carefully check for proper control of the throttle. For electric powered models,

when the throttle stick is at maximum the ESC should give the proper indications to

identify full forward motion is active. When throttle is at minimum, the ESC should

give the proper indications to identify power is off or zero throttle. For models with a

combustion engine, conﬁ rm when the throttle stick is at maximum all connections

on the engine allow it to reach maximum throttle. Conversely, conﬁ rm the engine

stops entirely when the transmitter throttle stick is at minimum position.

6. Make sure the radio system passes a “range check” to conﬁ rm the safe operating

distance from the Tx to the Rx. With the aircraft on the ground, make sure full

control of all surfaces exists at a distance of at least 100 feet (30 meters) away

from the model. Point the transmitter directly at the model and conﬁ rm constant

control exists.

7. When removing power from the airplane / radio gear, always turn off power

inside the model FIRST! Turn the transmitter power switch OFF second. Failure

to follow this order could result in bodily injury and damage to the surroundings

as the model could suddenly veer out of control. Move the throttle stick and trim

positions to minimum to entirely stop movement of the propeller. Only after the

prop has stopped moving completely, turn the receivers power switch (switch

harness or ESC switch) to the OFF position. For electric models, then disconnect

the battery from the ESC. Lastly, turn the transmitter power switch OFF.

FLYING A MODEL

1. Only after all setup and pre-ﬂ ight checks are complete, with power removed from

the model and transmitter, attach the propeller back onto the model.

WARNING! Always be mindful to stay clear of propellers after

power has been applied to the model!

2. If the model uses a combustion engine, make sure an ample amount of fuel is

in the tank. For electric powered models, make sure the battery is fully charged.

3. Carefully follow all instructions explained previously for applying power to the

transmitter and receiver.

4. Trim the aileron, elevator, and rudder channels as necessary during ﬂ ight so

the model can maintain a steady forward ﬂ ight without veering in an unwanted

direction.

5. After the model is safely landed and the throttle stick and trim are moved to

minimum (idle), remove power from the model ﬁ rst, then lastly to the transmitter.

SAFETY GUIDE

The Academy of Model Aeronautics (AMA) has established a Membership Manual

which includes a description of the AMA’s function and mission, insurance beneﬁ ts,

the Model Aircraft Safety Code, membership renewal information, and more. Model

ﬂ ying MUST be in accordance within AMA guidelines for AMA Liability Protection

to apply. See the website listed below, or contact the AMA for further details.

Academy of Model Aeronautics

5161 East Memorial Drive

Muncie, Indiana 47302

(765) 287-1256 – Business

(765) 289-4248 – Fax

(800) 435-9262 – Membership Services

http://www.modelaircraft.org

http://www.modelaircraft.org/ﬁ les/Memanual.PDF

Practice good safety precautions at all times when ﬂ ying model aircraft. The AMA

can assist in locating authorized local ﬂ ying clubs and ﬁ elds. The Tower Hobbies

424 is intended for use with radio control model hobby airplanes. Use with non-

hobby related products for non-hobby related activities is not recommended or

encouraged. Any alterations or modiﬁ cations to any parts of this product are

not recommended. Tower Hobbies is not responsible for unauthorized repairs or

modiﬁ cations. All unauthorized repairs will void the warranty.

ACCESSORIES

DTXP4704 Onyx “AA” Alkaline Battery (4)

DTXP4708 Onyx “AA” Alkaline Battery (8)

TACM0205 TSX5 Micro Hi Speed Servo

TACM0210 TSX10 Digital Micro Hi Torq MG Servo

TACM0225 TSX25 Digital Mini Hi Speed 2BB Servo

TACM0235 TSX35 Standard Servo Sport

TACM0240 TSX40 Standard Hi Speed MG 2BB Servo

TACM2090 Servo Extension 6”

TACM2500 Y-Harness 20”

TACP0101 Tx Rx Charge Leads

TOWL0624 System 2.4 6 Channel Receiver

TOWM6200 System 2.4 Switch Harness

TOWM6201 System 2.4 Switch Harness with Charge Plug

424 SPECIFICATIONS

TOWER HOBBIES 424 TRANSMITTER:

Channels: 4

Frequencies: 2.403 – 2.480GHz

Modulation: FHSS spread spectrum

Input power: four “AA” alkaline, NiCd, or NiMH cells (not included)

Output power: < 0.1W

Power indicators: LED, with low voltage alarm

Reversing switches: all channels

Antenna: built-in non-removable

Charge jack: built-in (Tactic compatible, for use with optional NiCd

or NiMH cells)

Trainer function: wireless (compatible with Tower Hobbies and Tactic®

brand transmitters only)

Optional mixes: elevon, v-tail

TOWER HOBBIES 6 CHANNEL RECEIVER:

Channels: 6

Frequencies: 2.403 – 2.480GHz

Modulation: FHSS spread spectrum

Input power: four “AA” alkaline, NiCd or NiMH cells (4.0-6.0V, not

included)

Failsafe: throttle settable, all other channels hold last

recognized positions

Dimensions: 1.77 x 0.98 x 0.5” (45 x 25 x 13mm)

Weight: 0.28 oz. (8g)

OTHER ITEMS INCLUDED:

• On/off switch harness with built-in charge lead

• 4 cell “AA” battery holder for receiver

• Neck strap

IMPORTANT WARNINGS

• NEVER allow water or moisture to make contact with the electronic

components inside the Tx, Rx, servos, switch harness, etc. This could

lead to failure or improper functionality of components and poor control

of aircraft which could pose a safety hazard.

• NEVER operate R/C model aircraft near power lines, radio or cell phone towers,

roads or automobiles, buildings, or pedestrians. Be very careful in locations

where many R/C aircraft are being used simultaneously.

• NEVER operate R/C equipment if you are physically impaired as it could pose a

safety hazard to yourself or others in the area.

• NEVER allow small children to operate/control model R/C equipment without the

supervision of an adult.

• NEVER allow the transmitter’s throttle stick to accidentally be moved away from

the “idle” or minimum position while the model’s engine/motor is moving.

• ALWAYS range check the radio system before use.

• ALWAYS make sure that all transmitter stick movements operate all servos

properly in the model. Check the proper operation of control surfaces before and

after starting the engine/motor.

• Do not store your radio equipment in hot or cold locations, in direct sunlight, in

locations with high humidity. Store R/C equipment in cool and dry locations.

• Do not allow chemicals to come in contact with any parts of the radio system.

Substances such as glow fuel, gasoline, CA glue, etc. could permanently damage

plastic parts of the radio system.

• If rechargeable batteries were installed in the Tx, remove the batteries before

placing the radio in long-term storage.

TROUBLESHOOTING

RANGE IS SHORT:

In terference – check Rx installation. Rx may need to be located to a different

position in the model for better reception.

Weak Tx or Rx battery – replace the batteries or recharge as applicable.

Crash damage – send the radio to Hobby Services for repair.

RUN TIME IS SHORT:

Weak Tx or Rx batteries – replace or recharge the batteries.

Ob structed servo linkages causing excess battery drain – free the linkages /

pushrods.

Tx ON BUT SERVOS DO NOT FUNCTION:

Weak Tx or Rx batteries – replace or recharge the batteries.

Rx switch is in the off position – turn on the switch harness or ESC.

Sw itch harness or ESC is connected incorrectly – check all connections and

the ESC instruction manual.

Rx is not linked to the Tx properly – perform linking process again.

INTERFERENCE OR GLITCHING SERVOS:

Out of range – operate the model more closely to the Tx.

Rx located too closely to engine, motor, or servos or other moving mechanical

parts which might be creating unwanted electrical noise – relocate the Rx

inside the model or relocate the ESC.

CONTROL SURFACE MOVES IN THE WRONG DIRECTION:

Reverse the

position of the reversing switch for the appropriate channel.

ONLY ONE SERVO GLITCHES:

Servo is bad – replace the servo or send to Hobby Services for repair.

FAILSAFE NOT WORKING CORRECTLY:

Rx not properly linked to the Tx – re-link and re-try. Contact Hobby Services for

further details.

WIRELESS TRAINER FUNCTION NOT LINKING:

Conﬁ rm that another Tower

Hobbies or Tactic brand 2.4GHz system or radio utilizing the SLT protocol is not

on in your area. The teacher’s and student’s transmitters were not powered in the

proper sequence or are positioned too far from each other. Carefully follow the

instructions on page 5 for proper linking and operation for training.

RECHARGEABLE BATTERIES WON’T ACCEPT CHARGE THROUGH THE TX:

Check the charger for proper setup and operation. Make sure the charge plug is

inserted fully into the charge jack. Make sure the Tx power switch is in the OFF

position. Make sure the cells are inserted inside the battery compartment in the

proper direction.

FCC STATEMENT

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.

(2) This device must accept any interference received, including interference that

may cause undesired operation.

FCC Rf Radiated Exposure Statement: The equipment complies with FCC Rf

radiation exposure limits set forth for an uncontrolled environment. This equipment

should be installed and operated with a minimum distance of 20 centimeters

between the radiator and your body.

NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR

TV INTERFERENCE CAUSED BY UNAUTHORIZED MODIFICATIONS TO THIS

EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER’S AUTHORITY

TO OPERATE THE EQUIPMENT.

FCC ID: IYFTTX600PA

1-YEAR LIMITED WARRANTY

(U.S. AND CANADA ONLY)

Tower Hobbies warrants this product to be free from defects in materials and

workmanship for a period of one (1) year from the date of purchase. During that

period, Tower Hobbies will, at its option, repair or replace without service charge

any product deemed defective due to those causes. You will be required to provide

proof of purchase (invoice or receipt). This warranty does not cover damage caused

by abuse, misuse, alteration or accident. If there is damage stemming from these

causes within the stated warranty period, Tower Hobbies will, at its option, repair

or replace it for a service charge not greater than 50% of its then current retail

list price. Be sure to include your daytime telephone number in case we need to

contact you about your repair. This warranty gives you speciﬁ c rights. You may have

other rights, which vary from state to state.

For service on your Tower Hobbies product in North America, send it postpaid and

insured to:

HOBBY SERVICES

3002 N. Apollo Dr., Suite 1

Champaign, IL 61822

Tel: (217) 398-0007 (9:00am - 5:00pm CST, M-F)

E-mail: hobbyservices@hobbico.com

towerhobbies.com

Made in China

TOWJ0424MNL

• This product is suitable only for people of 14 years and older. This is not a toy!

• WARNING: CHOKING HAZARD - May contain small parts. Keep away from

children under 3 years. Please retain packaging for future reference.

• 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.

• Tower Hobbies is not responsible for the use of this product.

Tower Hobbies 424 User manual

Brand: Tower Hobbies

Model: 424

Category: Toys & accessories

Type: User manual

This manual is also suitable for

424 4-Channel 2.4GHz Tx/Rx

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Tower Hobbies 424 User manual

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Tower Hobbies 424 User manual

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