FUTABA 12K Instruction Manual page 44

If the receiver of S-FHSS is used, the methods of a link differ.
*When using an optional receiver, a link is necessary.
*Follow the manual of the receiver to be used. Moreover, carry out an operating check.
*Telemetry function cannot be used for the S-FHSS receiver.
Receiver link method in S-FHSS
1
Place the transmitter and the receiver close
to each other within half (0.5m) meter.
2
Turn on the transmitter.
3
Turn on the receiver.
4
Push and hold the Link switch more than two(2) seconds. When the link is complete, the LED
in the receiver changes to solid green. When the ID cannot be read due to the surrounding
environment, try reading it with the transmitter and receiver antennas pushed.
5
Check system operation. If the transmitter and receiver are not linked, try linking again.
transmitter. This is a rare occurrence. However, should another S-FHSS transmitter/receiver be linking at the same time, your
receiver could link to the wrong transmitter. This is very dangerous if you do not notice this situation. In order to avoid the
problem,we strongly recommend you to double check whether your receiver is really under control by your transmitter.
*When the linked transmitter power is turned on, communications begins.
*When using 2 receivers, perform the linking operation the same as the 1st receiver.
<Basic Operation>
44
Optional S-FHSS receiver
WARNING
After the linking is done, please cycle
receiver power and check that the receiver
to be linked is really under the control of
the transmitter.
Don't perform the linking procedure with
motor's main wire connected or with the
engine operating as it may result in serious
injury.
Less than 0.5 m