12. Change of Crystal
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 the use of 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 make sure that you place the right crystal in the holder. Transmitter crystals are normally marked with the
letter T or TX (T = "transmitter"). Put the crystal holder back into the transmitter.
• Remove the receiver quartz (see ill. 14, pos. 6) 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.
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