4YF-2.4GHz INSTRUCTION MANUAL for Futaba 4YF-2.4GHz 4-channel, FHSS Radio control system for Airplanes Futaba Corporation Technical updates available at: http://www.futaba-rc.
TABLE OF CONTENTS Introduction ..........................................................................2 Receiver and Servo Connections ......................................9 Service ..................................................................................2 Radio Installation ...............................................................10 Usage Precautions...............................................................3 4YF-2.4GHz Functions..................................................
Application, Export, and Modification 1. This product may be utilized to control model airplanes or for surface uses (Boats, Cars, Robots). It is not intended for use in any application other than the control of models for hobby and recreational purposes. 2. Exportation precautions: (a) When this product is exported from the country of manufacture, its use is to be approved by the laws governing the country of destination which govern devices that emit radio frequencies.
FLYING SAFETY ｎWARNING To ensure the safety of yourself and others, please observe the following precautions: ｊ Have regular maintenance performed. The transmitter should have regular checkups for wear and tear. We recommend sending your system to the Futaba Service Center annually during your non-flying-season for a complete checkup and service. Batteries ｊ Charge the batteries! (See Charging the Ni-Cd batteries, for details.) Always recharge the receiver battery before each flying session.
If you do not turn on your system in this order, you may damage your servos or control surfaces, flood your engine, or in the case if electric-powered or gasoline-powered models, the engine may unexpectedly turn on and cause severe injury. ｊ While you are getting ready to fly, if you place your transmitter on the ground, be sure that the wind won't tip it over. If it is knocked over, the throttle stick may be accidentally moved, causing the engine to speed up. Also, damage to your transmitter may occur.
CONTENTS AND SPECIFICATIONS *Specifications and ratings are subject to change without notice. Transmitter: T4YF-2.4G T4YF-2.4GHz Transmitter of FHSS system Transmitting on 2.4GHz band Operating system: 2-stick, 4-channel system Power supply: 6V (4 AA size batteries) Current drain: 90mA Receiver: R2004GF 4 channel receiver of FHSS system Receiving on 2.4GHz band Power requirement: 4.8V or 6V (shared with servo)*1 Current drain: 30mA (at no signal) Size: 1.54x1.02x0.39” (39x26x10mm) Weight: 0.49oz.
INTRODUCTION TO THE 4YF-2.4GHz SYSTEM IMPORTANT!: Always turn on the transmitter first, then the receiver. When turning off the system, always turn off the receiver first. The object is never to have the receiver on by itself. Otherwise, the servos or control surfaces could be damaged, or in the case of electric-powered models, the motor may unexpectedly turn on causing severe injury.
BATTERY REPLACEMENT METHOD (4 AA SIZE BATTERIES) 1. Remove the battery cover from the transmitter by sliding it in the direction of the arrow in the figure. 2. Insert four new AA size batteries. 3. Slide the battery cover back onto the case. ｎCAUTION ｊ Always be sure you reinsert the batteries in the correct polarity direction. If the batteries are loaded incorrectly, the transmitter may be damaged. ｊ When the transmitter will not be used for any short or long period of time, always remove the batteries.
LINK PROCEDURE Each transmitter has an individually assigned, unique ID code. In order to start operation, the receiver must be linked with the ID code of the transmitter with which it is being paired. Once the link is made, the ID code is stored in the receiver and no further linking is necessary unless the receiver is to be used with another transmitter. (For T/R set, the link is already done at the factory.
RADIO INSTALLATION Follow these guidelines to properly mount the servos, receiver and battery. • Make certain the alignment tab on the battery, switch and servo connectors is oriented correctly and “keys” into the corresponding notch in the receiver or connectors before plugging them in. When unplugging items, 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.
4YF-2.4GHz FUNCTIONS Servo Reversing The servo reverse switches are used to change the direction that a servo responds to a control input from the transmitter (each stick). After using the reversing function, check all the controls on the model to be certain they are operating in the correct direction and that you did not inadvertently reverse a servo other than the one intended.
OTHER FUNCTIONS Trainer Function (Student only) The T4YF-2.4GHz trainer function lets you practice flying as a student by connecting the T4YF-2.4GHz to the instructor’s Futaba transmitter. To utilize the trainer function, the appropriate trainer cord (available separately) and a second Futaba transmitter (usually provided by your flight instructor or R/C club) will be required.
FLIGHT PREPARATION Flight preparation is to be done at the flying field. If you are an inexperienced pilot, be certain your flight instructor performs these following checks with you. Check the Controls 1. Get the frequency clip from the frequency control board at your flying site if the site has a clip for 2.4GHz. 2. Turn on the transmitter, then the receiver (remember to do this in reverse order when turning off the system). 3. Operate and observe the controls.
FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE STATEMENT (for U.S.A.) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
©Copyright 2009. No part of this manual may be reproduced in any form without prior permission. The contents of this manual are subject to change without prior notice. While this manual has been carefully written, there may be inadvertent errors or omissions. Please contact our service center if you feel that any corrections or clarifications should be made.
