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13. Crystal Change
There must be no other transmitters/models with the same frequency in the range of the transmitter, because the
transmitters interfere with each other. As a result, the models no longer respond correctly to the transmitter com-
mands. If there are any other model vehicles in your range, talk to the other operators about the frequencies they use.
For safety reasons, you should only use crystals that are explicitly recommended by the supplier for use in
your remote control system.
• Before a crystal change, turn off the speed controller first and then the transmitter. Disconnect the driving battery
from the speed controller.
• Pull the holder of the transmitter crystal out of the transmitter casing (see figure 1, item 6).
• Take the transmitter crystal out of its plastic holder. Insert a transmitter crystal with a different channel in the same
frequency band into the plastics holder (crystal orientation is unimportant).
Please ensure that you place the correct crystal in the holder. Transmitter crystals are normally marked
with the letters T or TX (T =
t
ransmitter or sender).
• Put the plastics holder with the transmitter crystal back into the transmitter.
• Pull the receiver crystal out of the vehicle’s receiver.
• The crystal suitable for the receiver has to be marked with the same channel name as the transmitter crystal. In
addition, it has the letter code R or RX (R = receiver) on it.
• Insert the crystal with a suitable frequency for the transmitter into the receiver. Orientation is also unimportant here.
• Switch on the transmitter and then the receiver and check the function of the speed controller and the steering
system; perform a range check.
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