Q: How to bind R8FGH to the RadioLink transmitter?

A:

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 of R8FG will start flashing slowly.

3. There is a black binding button (ID SET) on the side of the receiver. Press the button for more than 1 second and release, the LED will flash quickly, meaning the binding process is ongoing.

4. When the LED stops flashing and is always on, binding is complete and there will be a signal tower shown on top of the LCD screen of the transmitter. If not succeed, the green LED will keep flashing slowly to notify, and repeat the above steps.

Note: If bound to transmitters without a screen like T8S or T8FB, the always-on LED means binding completed.


Q: What transmitters are compatible with R8FGH?

A: R8FGH is compatible with RadioLink  RC8X/RC6GS V3/RC4GS V3/RC6GS V2/RC4GS V2/RC6GS (3-position switch version), RC4GS (version with P.D AFTER 180101) /T8FB(BT)/T8FB(OTG)/T8S(BT)/T8S(OTG).


Q: Why is there NO voltage telemetry display on a transmitter after the battery is correctly connected to the Telemetry pins?

A: Make sure both the transmitter and the R8FGH are powered on. The Telemetry pins are specially for model voltage telemetry connection but NOT for power supply to R8FGH. Power on R8FGH with individual supply within a voltage range between 3V to 12V.


Q: Why the gyro doesn’t correct the wheels reversely when the Gyro Mode is on (red LED always on)?

A: Check the GYRO setting in the menu. Make sure the MIX function is ON and the GYRO sensitivity is well set (100% as advised).

The GYRO Rate value is bigger, the sensitivity is higher while it’s lower if the Rate is smaller. (0% means gyro function is off.)

The GYRO sensitivity can be adjusted by rotating the VR knob (CH3) of RC6GS V3/RC4GS V3/RC6GS/RC6GS V2/RC4GS/RC4GS V2 or PS3 switch of RC8X by factory default.


Q: How do you activate the Gyro Mode of R8FGH?

A: Factory setting is gyro function OFF. Remain R8FGH still when powering it on as the gyro will self-check. Short press the binding button (ID SET) three times with intervals of less than 1 second, and the red LED indicator flashes three times. The red LED on/off indicates the gyro function is on/off. The always-on GREEN LED is working mode WITHOUT gyro and the always-on ORANGE(GREEN+RED) LED is working mode WITH gyro.


Q: How do we modify the gyro phase of R8FGH?

A: If the gyro phase is reversed, short press the binding button (ID SET) twice with an interval of less than 1 second. The red indicator flashes twice meaning the gyro phase setting is complete.


Q: Why does the LED of R8FGH keep flashing slowly?

A:  The slow flashing LED means binding doesn’t succeed or the signal gets lost after binding completes.


Q: Will the control range be affected if one of the antennas gets broken?

A:  The slow flashing LED means binding doesn’t succeed or the signal gets lost after binding completes.


Q: What is the operating voltage range that R8FGH supports?

A:  Yes. It’s strongly advised to change the broken antenna.

Q: Can the output port of the battery directly connect to the Telemetry pins on R8FGH?

A:  Yes, make sure the battery port to connect with R8FGH Telemetry pins is JST end.

Or it’s advised to use the connecting wire packed with R8FGH, with one JST end to the Telemetry pins on R8FGH for telemetry function and the other XT60 end to the model voltage as the below picture shows.

Q: Why does the indicator of the receiver stay solid green even though I have long pressed the bind button?

A: Long press the bind button, the green indicator will flash. If you press it for a long time, the indicator still stays solid green. The bind button is broken.


Q: How to put the double antenna? Can I wrap them?

A: The antenna of the receiver should be set upright because car models run on the ground and the boats on the water. Double antennas should be set at a 90-degree angle like below. Do not keep the antenna close to metal parts, electric machines, ESC, or other electronic devices.

Q: The telemetry voltage of R8FGH shown on the transmitter is less than the voltage measured, is that normal?

A: Make sure to test the battery voltage by multimeter. Because the voltage tested by other voltage test equipment is not accurate. 0.1V difference between the telemetry voltage and the real voltage is normal. If the difference is more than 0.1V, calibrate the voltage of the multimeter and check the difference again.

Q: Can I plug the battery into the SBUS channel and power the receiver?

A: Yes. Any one of the CH1 to CH7, and SBUS channels can be used for power on the receiver.


Q: Is the R8FGH receiver waterproof or not?

A: The PCB board and pins of R8FGH have the same waterproof treatment as the mobile phone, that is, nano-coating technology treatment and the waterproof grade is IPX4.

IPX4: The IP×× rating standard recommended by the International Electrotechnical Commission (IEC).


Q: If the model has its receiver built-in ESC, can I change the original receiver of my model to a RadioLink receiver?

A: No, you can't. Because the ESC and receiver are one unit. Only by changing a ESC, then you can change the receiver to RadioLink.

Q: Why R8FGH receiver cannot be powered on?

A:

1. Check if the ESC plug is reversed.

2. Check if the power supply connects to the telemetry port of the receiver.

Note: The telemetry port of R8FGH cannot be used to connect the power supply. It is only for model battery voltage telemetry.

3. Check if the ESC is defective. If the ESC is defective, it cannot supply power to any receiver.

4. R8FGH is burnt out.


Q: Does R8FGH support 3ms or 4ms digital servo speed?

A: Yes. It supports 3ms and 4ms digital servo speeds when binds with RC8X.

If you want 3ms or 4ms digital servo speed, please keep the firmware of RC8X to V1.1.5 or above, and then select FHSS V2 protocol to display this option. Servo speed can be selected from 14ms (analog servo speed), 4ms, 3ms (digital servo speed). The factory default servo speed is 14ms


Q: The telemetry voltage displayed on the transmitter's screen is less than measured. Is that normal?

A: Make sure to test the battery voltage by multi-meter. Because the voltage tested by other voltage test equipment is not accurate. 0.1V difference between the telemetry voltage and the real voltage is normal. If the difference is more than 0.1V, calibrate the voltage of the multi-meter and check the difference again.


R8FGH FAQ