Radio Installation - FUTABA 4EX Instruction Manual

4-channel, fm radio control system for aircraft

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Table Of Contents

Table of Contents

Charging jack -

Charging jack - Port for charging the transmitter batteries with the included battery charger.

On-off switch

DATA INPUT lever - Used to change the values of the various functions displayed on the LCD screen.

DATA INPUT lever -

Liquid-crystal display screen (LCD) - Displays programming modes and values entered.

Liquid-crystal display screen

MODE key - Used to scroll through and display the seven different functions.

MODE key -

SELECT key - Used to display the values for the current function.

SELECT key -

Throttle/rudder control stick - Operates the servos connected to channel 3 (throttle) and channel 4 (rudder) in the receiver.

Throttle/rudder control stick -

Trainer switch - Operates the trainer functions. To operate as a trainer switch the transmitter must be connected to another

Trainer switch -

transmitter via. a trainer cord (available separately).

Antenna - Radiates signals to the receiver. Never fly a model without fully extending the antenna or you may create

Antenna -

interference to other modelers and decrease operational signal range of the transmitter. The antenna may be removed and

replaced with another in case it is inadvertently broken.

Follow these guidelines to properly mount the servos, receiver and battery.

• •

Make certain the alignment tab

alignment tab on the battery, switch and servo connectors is oriented correctly and

corresponding notch in the receiver or connectors before plugging them in. When unplugging connectors, never pull on the

wires. Always pull on the plastic connector instead.

• •

If any servo wires are not long enough to reach the receiver, servo extension wires (available separately) may be used.

• •

Always mount the servos with the supplied rubber grommets

screws. No part of the servo casing should contact the mounting rails, servo tray or any

other part of the airplane structure. Otherwise, vibration will be transmitted to the servo

causing premature wear and/or servo failure.

• •

Note the small numbers (1, 2, 3, 4) molded into each arm on the Futaba 4-arm servo arms.

The numbers indicate how many degrees each arm is

minute manufacturing deviations from servo to servo.

• •

To center the servos, connect them to the receiver and turn on

t h e t r a n s m i t t e r a n d r e c e i v e r. C e n t e r t h e t r i m s o n t h e

transmitter, then find the arm that will be perpendicular to the

pushrod when placed on the servo.