RadioLink R8FM User manual

R8FM
(FHSS)
Radiolink R8FM, 2.4G 8 channels receiver, 2.5-gram weight, SBUS and PPM signal support, use for
Radiolink transmitter T8FB, is the best choice for racing drone.
Two signal working mode:
Blue/purple LED, S-BUS signal, 8 channels totally.
Red LED, PPM signal, 8 channels totally.
S-BUS and PPM signal change:
Quick press the ID SET switch twice within 1 second, the signal is changed from S-BUS to PPM.
The red LED indicates the PPM and blue/purple indicates S-BUS.
How to match code with transmitter:
1. Put the transmitter and the receiver close to each other within 1 meter.
2. Turn on the transmitter, then power on the R8FM.
3. There is a black button on the R8FM, press the binding button in one second until the receiver
light starts blinking and release, after about 8 times blinking, match code success when receiver
signal LED always on.
Installment of receiver antenna：
1. The antenna must be kept as straight as possible. Otherwise it will reduce the effective range.

2. Large model aircraft may of some metal part interfering signal, in this case the antenna should
be placed at side of the model.
3. The antenna must be kept away from conductive materials, such as metal and carbon by at
least a half inch. The coaxial part of the antenna does not need to follow these guidelines, but
do not bend it in a small radius.
4. Keep the antenna away from the motor, ESC, and other noise sources as much as possible.
5. The receiver can be packed by sponge or foam for shocking proof when it is installed to the
model.
After all of the above steps finished, now the program functions to assure it under control of
transmitter with a right connection.
Specification:
1. Channels: 8 channels
2. Working voltage: 4.8-6V
3. Working current: 30mA（input voltage: 5V）
4. Size: 16.0*21.5*1.0mm
5. Weight: 2.5g
6. 2048 section precision, 0.5us per section, servo anti-shake rudder.
7. Control distance: about 2000 meters air, actually control distance depends on the
environment.