A: The transmit mode of T8FB(BT) is on by default and currently can't be turned off.

A: No. T8FB can only work as Trainee/Secondary transmitter.

A: T8FB(BT) parameters can be easily set up and modified with Android or iOS mobile phone APP connected via Bluetooth.

Parameters also can be set up by computer tools connected via USB cable.

The mobile phone APP can be downloaded here:

https://www.radiolink.com/t8fb_bt_app

A: Parameters can be set via APP with mobiles and tablets

https://youtu.be/e6CXVk0i7bE

or software with a computer.

A: Connect and open the parameter setup APP, into the SYSTEM menu, and click RESET.

A: The default servo range of T8FB(BT) is 96. If the servo range exceeds the red line when calibrating in RadioLink Mission Planner of flight controller (Mini Pix &Turbo Pix), connect T8FB(BT) to the parameter setup APP or software and click BASIC menu and slightly decrease the servo range value.

A: When there are multiple parameter setup apps running backstage, extra data will be read as the servo range displays are not encrypted. Thus, turn off all the running apps, and reconnect T8FB(BT) to the mobile parameters setup APP. Click ALLOW to open the APP when the notice pops out asking for open permission.

Q: I use the T8FB controller as a single stick (mixing Channels 1 and 2) for a car, why there is only one wheel move when I move the stick up and down? And the other wheel move when I move the stick left and right.

A: Set ELEVON in the advance menu. And set MIX from INH to ACT/ON.

A: The USB port of T8FB is for upgrading the firmware and for copying the data to the computer. It cannot be used on the computer as a controller.

Do not use the USB port as a charging port, or it will damage the transmitter.

A: NO.

A: Yes. You can control the two receivers at the same time.

A:  If  T8FB keeps beeping when connecting to the mobile phone APP, you need to press any one of the below trimmer buttons to confirm the connection. After pressing the trimmer button, the beeping sound stops and the connection succeeds.

If  T8FB beeps after the connection succeeds, you need to check whether the alarm is caused by a transmitter voltage alarm, model voltage alarm, or RSSI alarm. You can set the value to be lower if the value is high.

Please note: The default low battery alarm voltage of T8FB will be automatically set according to the battery used. For the 2S lipo battery, it is 7.3V. For 3S lipo battery, it is 11V. For 4 AA batteries with 1.5V, the default low battery alarm voltage is 5V. But the working voltage of T8FB is 4.8V-18V. So we do not recommend users to use a 4 AA battery. Because the full voltage is 6V and it will go off the alarm when it is 5V. We recommend users use a 2/3/4S lipo battery, which will be more durable when used on T8FB.

A: You can distinguish T8FB(OTG) or T8FB(BT) from the label. Please check the below pictures.

A: Yes. Channels 1 to 4 can be set for different servo travel range both individually and at the same time.

When setting one channel for a different servo travel range, click “WRITE” after setting the D/R value for the corresponding channel. When setting 4 channels for different servo travel range at the same time, click  “WRITE” after setting the D/R value for each channel. For example: after setting the D/R value of channel 1, click “WRITE” to save the settings, and then switch the channel to “CH2”. Set the D/R value of channel 2, and then click “WRITE” to save the settings.  Repeat this step for channel 3 and channel 4.

A: Click the website to check the setting steps: https://www.radiolink.com/newsinfo/504919.html

A: Click the website to check the setting steps: https://www.radiolink.com/newsinfo/504912.html

A: Download the firmware and check the tutorial here: https://www.radiolink.com/t8fb_bt_firmwares

A: Check the tutorial here: https://www.youtube.com/watch?v=hp4g-NTMqMg

A: Set PROG.MIX in Parameter Setup APP as follows:

The switches of the auxiliary channels are as follows:

A:  Yes. Set ELEVON in the Parameter Setup APP of T8FB.

“Elevator mix” is also known as “delta wing mix”. It is often used for delta-wing aircraft. Two servos can control two servos surfaces on the left and right sides of the aircraft separately, and operate the aileron function and elevator function.

When “MIX” is set from “INH” to “ON”, the “AILE” and “ELEV” function is turned on. When this function is turned on, then both CH 1 and CH2 will respond, and the servo travel range can be adjusted individually.

1. AILE 1 and ELEV 2 correspond to the response rate of channel 1 when performing aileron operation and elevator operation.

2. AILE 2 and ELEV 1 correspond to the response rate of channel 2 when performing aileron operation and elevator operation.

The specific value is the amount of servo travel range when the corresponding channel performs the aileron or elevator operation. Positive and negative values represent different directions of movement.

Note: Do not set ELEVON when the aircraft is equipped with a flight controller, because the mixing in the transmitter will conflict with the mixing in the flight controller. Please refer to the manual of the to flight controller view the setting method.

A:

1. When the data read by the user differs from the reference data we provide, please check whether the EPA setting of each channel in the transmitter is the same. If the EPA setting for each channel is different, the read signal range will be different.

2. If the SBUS data cannot be read, please check whether the devices used are working properly and whether there is any problem with the connecting cable.

3. Our products support standard SBUS signals compatible with various flight controllers. Please refer to the chart below for detailed information.

A: Yes. The Frequencies Band of RadioLink transmitters are 2.4GHz ISM band, with a bandwidth of 83M. Up to 50 transmitters can be used at the same time.