BRWXF421EX

5-CHANNEL COMPUTER RADIO 3 XF421EX MANUAL • Table of Contents I. INTRODUCTION 1. Using This Manual4 2. Features4 2.1 Transmitter Features4 2.2 Receiver Features4 2.3Servo Features5 2.4Servo Layout5 3. Specifications6 3.1 System Specifications6 3.2 Transmitter Specifications6 3.3 Servo Specifications6 3.4 Receiver Specifications7 3.5 Charger Specifications7 3.6 Airborne Battery Pack7 4. Battery Charging8 4.1 Transmitter/Receiver8 4.2 Charger8 5. Trainer System9 II. XF421EX MANUAL 1. Transmitter Controls10 1.1 Control Identification and Location10 1.2 Receiver Channel Assignment/ Transmitter Throttle ALT 10 1.3 Transmitter Rear11 1.4 Control Stick Length Adjustment11 1.5 Direct Servo Control (DSC)12 1.6Neck Strap Attachment12 2. Connections13 2.1 Installation Requirements13 2.2 Connections13 3. Key Input and Display14 4. Battery Alarm and Display14 5. Input Mode and Functions15 5.1 Normal Display15 5.2 Mode Types15 5.3 System Mode16 5.4 Function Mode16 6. Functions (System Mode)17 6.1 Data Reset17 6.2Model Selection18 6.3 Wing Type Selection19 6.4 Model Name Entry21 7. Functions (Function Mode)22 7.1Servo Reversing22 7.2Sub-Trim23 7.3Travel Adjustment24 8. Data Sheet25 III. IMPORTANT INFORMATION 1. General Notes26 2. Daily Flight Checks26 3. Warranty Coverage27 4. Repair Service Instructions27 5. Frequency Chart28 TABLE OF CONTENTS We strongly encourage all prospective and current R/C aircraft pilots to join the Academy of Model Aeronautics. The AMA is a non-profit organization that provides services to model aircraft pilots. As an AMA member you will receive a monthly magazine entitled Model Aviation, as well as a liability insurance plan to cover against possible accident or injury. All AMA charter aircraft clubs require individuals to hold a current AMA membership prior to operation of their models. For further information you can contact the AMA at: Academy of Model Aeronautics 5151 East Memorial Drive Muncie, IN 47302 (317) 287-1256 Thank you for purchasing the JR XF421EX 5-Channel Radio System. This unit has been designed to provide the modeler with a high quality, user friendly radio system that can be depended upon for years to come. It’s important that you carefully read this manual before attempting to operate your system. Please pay particular attention to Page 9, Introduction 4.2 Charging Your XF421EX Radio System. AMA INFORMATION INTRODUCTION TO THE XF421EX RADIO SYSTEM 4 XF421EX MANUAL • INTRODUCTION 1: Using This Manual / INTRODUCTION 2: Features The XF421EX is a full feature introductory computer radio that can be used for airplanes. A blank data sheet is included at the end of this manual. Once you have input all the necessary data into your transmitter for a particular model, we strongly recommend that you write that information down on a copy of the data sheet provided. This is to insure that, in the rare case of a memory failure, you will not lose your data. INTRODUCTION 1:Using This Manual USING THIS MANUAL 1 •Easy-to-read LCD screen •2 model memory •Trainer system compatible with most other JR radios •2 conveniently mounted programming switches •Computer designed ergonomically styled case •Adjustable stick length •Throttle trim only affects idle position •Two speed scrolling—Press and hold the appropriate button to scroll quickly or press and release to scroll in steps •Flaperons mixing •Delta wing mixing •V-tail mixing R600 Receiver •The R600’s extremely compact size allows it to fit easily in limited spaces. •An independent laboratory ranked the R600 receiver with JR’s patented ABC&W circuitry as one of the best receivers ever tested in terms of 3IM, 2IM, adjacent channel rejection, signal-to- noise ratio, and on-channel capture point. •A special “unwanted interference limiter” ignores signals outside of the R600’s band width when the receiver is on and the transmitter is off. The limiter also prevents servos from random glitching when other transmitters are operating in close proximity. •The electrical circuitry in the R600 is state-of-the- art surface mount technology (SMT). These SMT components draw less current, thus increasing flying time. Flush mounting of these components also reduces the risk of vibration wear and damage. •The R600 is compatible with all JR FM- transmitting radios. TRANSMITTER FEATURES 2.1 RECEIVER FEATURES 2.2 INTRODUCTION 2:Features 5 XF421EX MANUAL • INTRODUCTION 2: Features INTRODUCTION 2:Featurescontinued 517 Servo •A .03ms deadband amplifier insures accurate neutral centering. •Low current drain. •Ball bearing supported ouput shaft •An indirect drive feedback potentiometer gives additional protection from vibration. SERVO FEATURES2.3 SERVO LAYOUT 2.4 Servo Mounting Flange Rubber Grommets Rubber Grommets Servo Case Servo Lead w/Connector Servo Output Shaft Servo Mounting Flange Servo Arm/Horn Servo Arm Retaining Screw Servo Eyelet Top View 6 XF421EX MANUAL • INTRODUCTION 3: Specifications INTRODUCTION 3:Specifications SYSTEM SPECIFICATIONS TRANSMITTER SPECIFICATIONS 3.1 3.2 SYSTEM NAMEXF421EX TRANSMITTER BODYXF421EX RECEIVERR600 CHARGERNEC-221 AIRBORNE BATTERY4N-600 SERVOSNES-517BBX4 ACCESSORIESMini Switch 12" Aileron Extension Servo Accessories Instruction Manual TYPE AIRPLANE MODEL NUMBERXF421EX ENCODER5 Channel Computer System RF50/53/72 MHz MODULATIONPPM (FM) OUTPUT POWERApproximately 1 Watt CURRENT DRAIN200mA POWER SOURCE1.2Vx8 Nicad (9.6V) 600mah OUTPUT PULSE1000-2000 (1500 Neutral) TYPE AIRPLANE SERVO SPECIFICATIONS3.3 TORQUE (oz./in.)40.3 SPEED (sec.).25 WEIGHT (oz.)1.47 SIZE (in.) (W x L x H)0.73 x 1.52 x 1.32 BBYES MOTOR3-Pole Ferite TYPE 517BB 7 XF421EX MANUAL • INTRODUCTION 3: Specifications RECEIVER SPECIFICATIONS 3.4 CHARGER SPECIFICATIONS AIRBORNE BATTERY PACK 3.5 3.6 MODEL NUMBERNER-600 TYPE6-Channel/FM-ABC & W/Circuitry FREQUENCY50/53/72MHz SENSITIVITY (Microseconds)5μs Minimum SELECTIVITY8KHz/50dB WEIGHT (oz.)1 oz. SIZE (in.) (W x L x H)1.43 x 2.06 x .55 RECEIVER ANTENNA39" For All Aircraft Frequencies TYPE R600 FM MOD…

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TO: FCC FROM: Horizon Hobby Distributors SUBJECT: BRWXF421EX Equipment Code Change FCC 731 Conf. #: EA96000 RE) Equipment Classification Correction We have discovered that the incorrect Classification code, DSC was given when we filed our 731 form. Please note when reviewing this information that the correct Classification code should read: TNB. Thank you for your attention to this matter. Best Regards; Len Sabato Horizon Hobby Distributors

TO: FCC ATTN: Mr. Joe Dichoso FROM: Len Sabato/ Horizon Subject: BRWXF421EX Manual Addition Reference # 12093 EA96000 RE) Manual Addition to comply with Section 95.653 We will be adding the following information to page 28 of the instruction manual: “ The Federal Communications Commission (FCC) requires that changes in radio frequency must be performed by an authorized service technician only (Horizon Service Center). Any frequency changes made by a non-certified technician may result in a violation of the FCC rules”. We are hopeful that this warning will be acceptable. If you require any changes in the wording of this addition, please advise. Best Regards; Len Sabato