RadioLink t8fb User manual

T8FB
（FHSS）
User Manual
8-Channel Remote Controller
App Parameter Setting via Bluetooth Connection
Compatible with Fixed-wings/Gliders/Multirotors/Cars/Boats/Robots
CE FCC RoHS
*Please be kindly noted that this manual will be updated regularly and please visit RadioLink official website to
download the latest version：www.radiolink.com

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Thank you for purchasing RadioLink 8-channel remote controller T8FB.
To fully enjoy the benefits of this product and ensure safety, please read the manual carefully and set up
the device as instructed steps.
If any problems found during the operation process, either way listed below can be used as online technical
support.
1. Send mails to [e-mail] and we will answer your question at the earliest.
2. Send message to us on our Facebook page or leave comments on our YouTube page
3. If purchased from an approved dealer or distributor, you can contact them directly for support.
All manuals and firmwares are available on RadioLink official website www.radiolink.com and more tutorials
are uploaded. Or follow our Facebook and YouTube homepage to stay tuned with our latest news.
Never operate models during adverse weather conditions. Poor visibility can cause disorientation and loss
of control of pilots’ model.
Never use this product in a crowd or illegal areas.
Always check all servos and their connections prior to each run.
Always be sure about turning off the receiver before the transmitter.
To ensure the best radio communication, please enjoy the flight/driving at the space without interference
such as high voltage cable, communication base station or launching tower.
This product is not a toy and is NOT suitable for children under the age of 14. Adults should keep the product
out of the reach of children and exercise caution when operating this product in the presence of children.
Never operate your model during adverse weather conditions. Water or moisture may enter the transmitter
inside through gaps in the antenna or joystick and cause model instability, even out of control. If running in the
wet weather(such as game) is inevitable, always use plastic bags or waterproof cloth to cover the transmitter.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
This device may not cause harmful interference, and prevents external wireless interference, including
interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
WARNING
SAFETY PRECAUTIONS

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Content
Chapter 1 Introduction ...................................................................................................................................................... 1
1.1 Receivers.....................................................................................................................................................................2
1.2 Binding......................................................................................................................................................................... 2
1.3 Note of Receiver Usage............................................................................................................................................ 3
1.4 T8FB Calibration.........................................................................................................................................................3
Chapter 2 Firmware Upgrade............................................................................................................................................ 4
Chapter 3 Parameters Setup via Mobile.......................................................................................................................... 5
3.1 Android APP Installation............................................................................................................................................ 5
3.2 Connection via Bluetooth.......................................................................................................................................... 5
3.3 Parameters Setup Menu........................................................................................................................................... 6
3.3.1 SERVO Menu..................................................................................................................................................7
3.3.2 BASIC Menu....................................................................................................................................................7
3.3.3 ADVANCED Menu.......................................................................................................................................... 9
3.3.4 SYSTEM Menu............................................................................................................................................. 10
3.3.4.1 PROG.MIX ........................................................................................................................................... 11
3.3.4.2 TH/CURE.............................................................................................................................................. 11
3.3.4.3 DR/CURE............................................................................................................................................. 11
3.3.4.4 RESET.................................................................................................................................................. 12
Chapter 4 T8FB Parameters Setup via Computer.................................................................................................... 12
4.1 Software Installation and Connection...................................................................................................................... 12
4.2 Parameters Setup Menu............................................................................................................................................13
4.2.1 BASIC Menu.................................................................................................................................................... 15
4.2.2 ADVANCE Menu ........................................................................................................................................... 15
T8FB & R8EF Parameters ............................................................................................................................................15

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Chapter 1 Introduction
As image of T8FB (Mode 2) shown below, there are one two-way switch, one three-way switch, two VR
switches, four trimmer buttons and two joysticks. The Mode can be personalized to 1(throttle on right hand) or 2
(throttle on left hand) or both sticks return to center points with the small accessory packed in the bag.
Factory setting by default: SwB is CH5, VrB is CH6 , SwA is CH7 and VrA is CH8.
Universal JST battery connector supports multiple batteries, including 4pcs AA batteries or 2S/3S/4S LiPo
battery. Default low battery alarm voltage will be automatically set according to the battery used. Or pilots can
personalize the alarm value with the mobile APP or computer software.
Note The phases of the 4 channels can be easily changed by prodding the corresponding phase switches
instead of modifying the parameter data in the software/APP.
1Earth Pole
2Null
3Voltage Input: 7.4-15V
4Output: PPM
5Input：RSSI
1
2
3
4
5

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T8FB Basic Setup
1.1 Receivers
The standard receiver packed with T8FB is R8EF, 8-channel receiver with PWM and SBUS/PPM signal output
supported.
Signal Working Mode
(1) PWM Working Mode: Receiver indicator is RED with all 8 channels output PWM signal.
(2) SBUS/PPM Working Mode
Receiver indicator is Blue(Purple) with 8 channels output in total. Channel 1 is SBUS signal, channel 2 PPM
signal and channel 3 to 8 PWM signal.
Signal Switch between SBUS&PPM and PWM
Short press the binding button on the receiver twice within 1 second to switch the SBUS/PPM signal to PWM
signal.
1.2 Binding
Every transmitter owns a unique ID code. Before using, binding transmitter to receiver on aircraft is a must.
When done binding, ID code will be stored in the receiver, no need to rebind, unless the receiver is going to
work with another transmitter. If a new compatible receiver is purchased, binding needs to be done before

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using.
Binding steps of all transmitters and receivers from RadioLink are the same as follow:
1) Put the transmitter and the receiver close to each other (about 50 centimeters) and power both on.
2) Switch on the transmitter and the LED on R8EF will start flashing slowly.
3) There is a black binding button(ID SET) on the side of receiver. Press the button until the LED flashing
quickly and release, meaning binding process is ongoing.
4) When the LED stops flashing and is always on, binding is complete. If not succeed, the LED will keep
flashing slowly to notify, repeat the above steps.
1.3 Note of Receiver Usage
1Keep antennas as straight as possible, or the effective control range will reduce.
2Big models may contain metal parts that influence signal emission. In this case, antennas should be
positioned at both sides of the model to ensure the best signal status in all circumstances.
3Antennas should be kept away from metal conductor and carbon fiber at least half inch away and no
over bending.
4Keep antennas away from motor, ESC or other possible interference sources.
5Sponge or foam material is advised to use to prevent vibration when installing receiver.
6Receiver contains some electronic components of high-precision. Be careful to avoid strong vibration
and high temperature.
7Special vibration-proof material for R/C like foam or rubber cloth is used to pack to protect receiver.
Keeping the receiver in a well-sealed plastic bag can avoid humidity and dust, which would possibly make the
receiver out of control.
1.4 T8FB Calibration
Press rudder trimmer left and turn on transmitter at the same time.
When the transmitter is power-off, toggle both sticks at the central point. Then press the rudder trimmer button
left and the power button simultaneously, red and green LED will start flashing and the T8FB is ready to be
calibrated..
Range Calibration: Toggle both sticks (Ch1-4) to the highest point/maximum and the lowest point/minimum.
Then back to the central point. (Refer to image below)
Central Point Calibration: When the joysticks are back to the central point, press rudder trimmer right, and
then red and green LED always on means sticks calibration is done with success. Then turn off T8FB and
repower it on.

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Chapter 2 Firmware Upgrade
T8FB can be update with latest functions added, keeping advanced as always.
The function of data backup makes massive copy possible, even the same model can directly copy data. Set
parameters once, copy at ease! The whole file with all necessary tools can be downloaded from
https://www.radiolink.com/t8fb_bt_firmwares
1) Driver Installation: Follow the steps in the PDF file and install the driver.
2) Connect T8FB to computer via an android USB cable of data transmission (NOT charging function only).
3) Open the software to upgrade T8FB firmware and choose the correct COM port.
4) Click CONNECT and press the power button once quickly within 1 second. When “DISCONNECT” in
RED turns to “CONNECT” in GREEN, it means it’s connected with success.
5) Click APROM and choose the latest firmware downloaded from
https://www.radiolink.com/t8fb_bt_firmwares
* The factory default firmware of T8FB is the latest. And firmware will be regularly updated and available on
RadioLink website.
6) Click “START” and the process bar becomes GREEN. When the green bar goes to the end and shows
PASS, the firmware is upgraded with success.

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Chapter 3 Parameters Setup via Mobile APP
3.1 APP Installation
Android APP: Visit https://www.radiolink.com/t8fb_bt_app to
download the android app to setup T8FB parameters by Bluetooth
connection.
Apple APP: Search radiolink in Apple store and download.
Different from the current Apple App, the current Android APP has two more programmable mixing controls,
Throttle Curve and DR Curve parameter setup menus and customizable RSSI/Model Voltage Alarm.
* Latest APPs with new functions added will be updated regularly, please always take the version on
https://www.radiolink.com/T8FB_apps as the latest.
3.2 APP Connection
Connection of both Android APP and Apple APP to T8FB are the same as below:
1) When the installation of parameter setup APP is complete, press the power button to turn on T8FB.
2) Click
to enter the APP, a message will pop out to ask for permission to turn on the Bluetooth
function.
Android APP Apple APP

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3) Click CONNECT on the top left of the parameter setup interface, a list of devices will pop out for selection.
4) Select RadioLink device, the two LED indicators at rightmost will flash with DD sounds.
5) Press any of the trimmer buttons to stop the DD sounds and the servo range will display on the APP,
meaning connection between the APP and T8FB succeed.
* If fail, please repeat the above steps to try again.
3.3 Parameters Setup Menu
Parameters setup of both Android APP and Apple APP are the same as below:
There are 6 function keys on the top of the parameter setup interface.
(DIS)CONNECT: When APP is opened on the mobile and T8FB is powered on, click CONNECT and a list of
Bluetooth devices will pop out and select the RadioLink device to make connection. The two leds at the
rightmost will flash in turn with DD sounds, press any of the trimmer buttons to stop the DD sounds and the
servo range will display on the APP. If fails, press DISCONNECT and CONNECT again.
READ: Click READ, two short D sounds will be heard and the APP starts reading the data in T8FB. The current
data of the T8FB won’t display on the APP until clicking READ.
WRITE: Click to update the changed data into the T8FB and two slow D sounds mean the modified data have
been written in T8FB. If no D sound means update failure, please reconnect T8FB to the App and re-write.
Click WRITE each time parameter is modified to make sure it’s well input to the T8FB.
STORE: Click to save the APP data as a file in the mobile.
LOAD: Click LOAD and a pop out of ‘Model Select’ will display and user can either create a new file or select
among the saved files.
CLOSE: Click CLOSE to exit.

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There are 4 more parameters displaying next to SYSTEM : Model data selected/T8FB voltage(TX)/RSSI/
Model voltage(EXT, works only with RadioLink receivers of telemetry function R7FG or R8F).
Parameters Setting Steps and Multiple Model Data Storage
When parameters need to be modified, click READ first to input the original data from T8FB into the APP,
then modify as wish and click WRITE to output the modified data to T8FB.
Click LOAD and a pop out of ‘Model Select’ will display, click NEW to create a new file
/model/Model-New.txt. Click it to select and tab the file name next to the SYSTEM to rename. Setup all the
data then click STORE to save under the personalized name.
When parameters STORE as TXT file need to be input, click LOAD first to select from the saved data files
into the APP then click WRITE to copy them to T8FB.
Note If the new file created is forgotten to rename but STORE as Model-New, the data in this file will be
cleaned automatically when trying to create another new file sharing the same file name.
There are 7 parameter setup menus:
*
The above menus are all available on Android APP V7.1 and above. Menu No 1. to 4 are available on Apple
APP. The latest APP will be frequently updated on RadioLink official website www.radiolink.com .
3.3.1 SERVO Menu
The 8 rectangles show the CH1-CH8 servos range (4 basic
channels and 4 auxiliary channels) from left to right. CH1--Aileron,
CH2 - Elevator, CH3 - Throttle,CH4--Rudder, CH5 to CH8--Auxiliary
channels
3.3.2 BASIC Menu
There are 6 parameters to setup including” REV” “SUB” “EPA-L” “EPA-R” “F/S” “DELAY”
No.
Menu
No.
Menu
1
SERVO
5
SYSTEM2
2
BASIC
6
TH/CURE
3
ADVANCED
7
DR/CURE
4
SYSTEM
8
RESET