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12. Crystal Change
In order to avoid a double channel assignment, it may be necessary to change the crystals on your remote control
system. For this purpose, proceed as follows:
• For reasons of operational safety, you should only use crystals that are explicitly recommended for use in your
remote control system by the supplier.
• While the transmitter is switched off, remove the holder for the transmitter quartz from the transmitter housing (see
ill. 1, pos. 10).
• Take the transmitter crystal out of its plastic holder. Insert the replacement crystal with a different channel in the
same frequency band. Please ensure that you place the correct crystal in the holder. Transmitter crystals are normally
marked with the letters T or TX (T = transmitter or sender). Put the crystal holder back into the transmitter.
• Remove the receiver quartz (see ill. 15, pos. 4) from the electronic module only when the helicopter battery has been
disconnected.
• The suitable crystal for the receiver has to be marked with the same channel number as the transmitter crystal. In
addition it is marked with the letter code R or RX (R = receiver).
• Insert the replacement crystal with the suitable frequency for the transmitter into the receiver.
• Switch the transmitter on and then the receiver and check the function of the system.