Manual Introductory Section
If you are using the Synthesized transmitter module FP-TK-FSS,
be sure that you know the transmitting frequency before switching
on. If you don't know the frequency, hold the [A] or [ R ] key down
as you switch on power. The transmitting frequency will be displayed
but radio transmission is deactivated. Once you have determined the
frequency, secure the appropriate frequency control device and turn
on power to operate normally.
Be sure to charge the transmitter and receiver batteries fully. If the
system has not been used for a long time, be sure to charge at least
24 hours before using the system, and check both batteries with the
system voltmeter at high load (500 mA). The transmitter battery
should remain above 9.4 volts, and the receiver should be above 4.7
volts. IF EITHER BATTERY INDICATES LOWER THAN THIS, DO
NOT FLY. Recharge the batteries first.
Do not quick charge the battery. Overcharging the battery will
cause the battery to overheat and creates a very dangerous situation.
Recharge
Do not expose your system to rain or allow water to get inside the
case. If water does penetrate the case, control of the model could be
lost, resulting in a crash and danger to others. Use a waterproof cover
or wait until the conditions are dry before attempting to fly.
Manual Introductory Section, Page 8