Horizon Hobby EXPERT4 User Manual

E X P E RT

4-Channel Radio System

I n s t ruction Manual

2

EXPERT Manual

INTRODUCTION TO THE EXPERT RADIO SYSTEM

Thank you for purchasing the EXPERT 4-Channel Radio System.
This unit has been designed to provide the modeler with a user
friendly radio system that can be depended upon for years to
come.

TABLE OF CONTENTS

Introduction to the EXPERT Radio System . . . . . . . 3

1. System Specifications . . . . . . . . . . . . . . . . . . . . 4

2. EXPERT Transmitter

2.1 Transmitter Features/Specifications . . . . . . . . . . 4

2.2 Transmitter Layout. . . . . . . . . . . . . . . . . . . . . . 5

2.3 Control Stick Length Adjustment. . . . . . . . . . . . . 6

2.4 Neck Strap Attachment. . . . . . . . . . . . . . . . . . . 6

3. RF600 Receiver

3.1 Receiver Features/Specifications . . . . . . . . . . . . 6

3.2 Receiver Layout. . . . . . . . . . . . . . . . . . . . . . . . 6

4. SL500 Servo

4.1 Servo Features Specifications. . . . . . . . . . . . . . . 7

5. Airborne (Receiver) Battery Pack . . . . . . . . . . . 7

6. Charger Specifications. . . . . . . . . . . . . . . . . . . . . 8

7. Charging Your EXPERT Radio System
Prior to Installation

7.1 Battery Charger. . . . . . . . . . . . . . . . . . . . . . . . 8

It is important that you carefully read this manual before
attempting to operate your EXPERT System. Please pay
particular attention to Section 8, Charging Your EXPERT Radio
System Prior to Installing.

8. Pre-Installation System Preparation

8.1 Flight Pack Connections. . . . . . . . . . . . . . . . . . . 9

8.2 SL500 Servo Preparation . . . . . . . . . . . . . . . . . 9

8.3 Transmitter Preparation . . . . . . . . . . . . . . . . . 10

8.4 System Check. . . . . . . . . . . . . . . . . . . . . . . . . 10

9. Flight Pack Installation

9.1 Installation Suggestions. . . . . . . . . . . . . . . . . . 11

9.2 Servo Reversing/Setting Reversing Switches . . . 12

9.3 Adjusting Control Surface Travel. . . . . . . . . . . . 13

10. Pre-Flight Information

10.1 EXPERT Trainer System . . . . . . . . . . . . . . . . . 14

10.2 Operating the Trainer System . . . . . . . . . . . . 14

10.3 Range Testing Your Model . . . . . . . . . . . . . . 14

General Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Daily Flight Checks . . . . . . . . . . . . . . . . . . . . . . . . . 15

Warranty and Service Information

Warranty Coverage . . . . . . . . . . . . . . . . . . . . . . . 16

Repair Service Instructions . . . . . . . . . . . . . . . . . . 16

Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

EXPERT Manual

3

1. SYSTEM SPECIFICAT I O N S

System Name EXPERT
Receiver RF600
Airborne Battery 4.8V 600mAh
Servos 4 – SL500

2. EXPERT TRANSMITTER

2.1

TRANSMITTER FEAT U R E S / S P E C I F I C AT I O N S

• Computer-designed, ergonomically styled case

• Servo reversing on all four channels (page 12)

• Adjustable control stick length (page 6)

• Trainer system feature compatible with Expert and JR
radio systems

Accessories Mini Switch

Servo Accessories
12" Aileron Extension
Instruction Manual
Charger

• Easy-to-read transmitter battery voltage LED readout

• 9.6V 600mAh transmitter Ni-Cad battery pack

• Power output approximately 500mw

TRANSMITTER SPECIFICAT I O N S

Encoder 4-Channel Analog System
RF 72 MHz
Modulation PPM (FM)

Output Power Approximately 500mw
Current Drain 150mAh
Power Source 1.2V x 8 Ni-Cad (9.6V 600mAh)
Output Pulse 1.0 –2.0ms

4

EXPERT Manual

2.2

TRANSMITTER LAY O U T

Transmitter Battery
Voltage LED

Neck Strap Attachment

Trainer Button

Throttle/Rudder Stick
Throttle Trim

Rudder Trim

Trainer Cord Jack
(Cord not included,
order EXRA400.)

IMPORTANT

Transmiter Battery Voltage LED Indicator

Transmitter Antenna

Carrying Bar

Elevator Trim
Elevator/Aileron Stick

Power Switch
Aileron Trim

Transmitter Crystal

JR brand replacement crystals

recommended order JRPXF**

Replace ** with channel number

Servo Reversing Switches

Low Mid Full
Red Orange Green

Low: Do not fly
Mid: System should be recharged
Full: System ok to fly

9.6V 600mAh
Ni-Cad Transmitter Battery Pack

Carrying Bar

EXPERT Manual

5

2.3

CONTROL STICK LENGTH ADJUSTMENT

To adjust the control stick length, use a 2mm Allen wrench to unlock
the set screw located inside the end of the control stick. Turn the set
screw counterclockwise to loosen it, then turn the knurled portion of the
stick to adjust the length. Counterclockwise will lengthen the stick and
clockwise will shorten it. After the control stick(s) has been adjusted to
suit your flying style, tighten the set screw.

2.4

NECK STRAP AT TA C H M E N T

There is an eye hook on the front of the transmitter for attaching an

optional neck strap. The eye hook is precisely positioned (see Section

3. RF600 RECEIVER

3.1

RECEIVER FEAT U R E S / S P E C I F I C AT I O N S

• Patented noise rejection system for excellent interference
protection

Set Screw

SET SCREW

LOOSEN

Loosen

TIGHTEN

Tighten

3.2) so that the transmitter will be perfectly balanced when a neck
strap is used.

• Compact, lightweight design provides easy installation into most
model designs

• State-of-the-art surface mount technology (SMT) design

6

RECEIVER SPECIFICAT I O N S

Model Number RF600
Type 6-Channel FM
Frequency 72 MHz

Sensitivity

3.2

RECEIVER LAY O U T

Receiver Frequency Crystal

JR brand replacement crystals

recommended order JRPXF**

Replace ** with channel number

(Microseconds

)

5µs Minimum

RF600 Receiver

Selectivity 8KHz/50db
Weight (oz.) 1 oz.
Size (W x L x H) 1.43" x 2.06" x .55"
Receiver Antenna 39" for all Aircraft Frequencies

Battery (Switch Harness)

Rudder
Elevator
Aileron
Throttle (Engine)

Antenna

EXPERT Manual