Q：What signal output does R8FM support?

A：R8FM supports 2 signals output, SBUS and PPM.

Receiver indicator is RED with all 8 channels output PPM signal.

Receiver indicator is Blue (Purple) with 8 channels output SBUS signal.


Q：How to switch the signal working modes?

A：Short press the binding button (ID SET) twice within 1 second. When the Red LED is on, signal output is PPM. When the Blue/purple LED is on, signal output is SBUS.


Q：What is the operating voltage range that R8FM supports?

A: The operating voltage range of R8FM is from 4.8V to 6V.


Q: What transmitters are compatible with R8FM?

A: R8FM is compatible with RadioLink T8FB/T8S/RC6GS V3/RC4GS V3/RC6GS V2/RC4GS V2/RC6GS/RC4GS.


Q：How to bind R8FM to 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 R8FM will start flashing slowly.

3. There is a black binding button (ID SET) on the side of receiver. Press the button for more than 1 second and release, the LED will flash quickly, meaning 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 screen of the transmitter. If not succeed, repeat the above steps.

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


Q：Why the LED of R8FM keeps flashing slowly?

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


Q: How to output RSSI value from receiver R8SM/R8FM to FPV when connect to Betaflight F4/F7？

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



Q: How to output RSSI value from receiver R8SM/R8FM to FPV when connect to the Mini Pix/TURBO PiX/PIXHAWK？

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


R8EF FAQ