JR Sport S400 User manual

4-CHANNEL FM RADIO SYSTEM
INSTRUCTION MANUAL
MANUFACTURED BY JR REMOTE CONTROL

1
S400 MANUAL
1. Introduction to the S400 Radio System . . . . . . 1
2. System Specifications . . . . . . . . . . . . . . . . . . . . . 2
3. S400 Transmitter
3.1 Transmitter Features . . . . . . . . . . . . . . . . . . . . 2
3.2 Transmitter Layout . . . . . . . . . . . . . . . . . . . . 2-3
3.3 Transmitter Specifications. . . . . . . . . . . . . . . . 3
3.4 Control Stick Length Adjustment . . . . . . . . . . 3
3.5 Neck Strap Attachment . . . . . . . . . . . . . . . . . . 3
4. RS600 Receiver
4.1 Receiver Features . . . . . . . . . . . . . . . . . . . . . . . 4
4.2 Receiver Specifications . . . . . . . . . . . . . . . . . . 4
5. ST47 Servo
5.1 Servo Features . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.2 Servo Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5.3 ST47 and SM8 Servo Specifications. . . . . . . . 5
6. Airborne (Receiver) Battery Pack . . . . . . . . . . . . 5
7. Charger Specifications. . . . . . . . . . . . . . . . . . . . . . 6
8. Charging Your S400 Radio System
Prior to Installation
8.1 Battery Charger. . . . . . . . . . . . . . . . . . . . . . . . . 6
9. Pre-Installation System Preparation
TABLE OF CONTENTS
1. INTRODUCTION TO THE JR SPORT S400 RADIO SYSTEM
Thank you for purchasing the JR Sport S400 4-Channel FM
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 is important that you carefully read this manual before
attempting to operate your S400 System. Please pay
particular attention to Section 8, Charging Your S400
Radio System Prior to Installing.
9.1 Flight Pack Connections . . . . . . . . . . . . . . . . . 7
9.2 Transmitter Preparation. . . . . . . . . . . . . . . . . . 7
9.3 ST47 Servo Preparation . . . . . . . . . . . . . . . . . . 8
9.4 System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 8
10. Flight Pack Installation
10.1 Installation Suggestions . . . . . . . . . . . . . . . . 9
10.2 Servo Reversing . . . . . . . . . . . . . . . . . . . . . . 10
10.3 Setting Reversing Switches . . . . . . . . . . . . . 10
10.4 Adjusting Control Surface Travel . . . . . . . . 11
11. Pre-Flight Information
11.1 S400 Trainer System . . . . . . . . . . . . . . . . . . . 12
11.2 Operating the Trainer System . . . . . . . . . . . 12
11.3 Range Testing Your Model . . . . . . . . . . . . . 12
12. General Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13. Daily Flight Checks . . . . . . . . . . . . . . . . . . . . . . . 13
14. Warranty and Service Information
14.1 Warranty Coverage . . . . . . . . . . . . . . . . . . . . 14
14.2 Repair Service Instructions . . . . . . . . . . . . . 14
15. Frequency Chart . . . . . . . . . . . . . . . . . . . . . . . . . . 15
16. Notes on the Included Receivers . . . . . . . . . . . 16
16.1 Changing the Shift from
Positive (+) to Negative (–) . . . . . . . . . . . . . 16
16.2 Information Regarding
the RS6UL Receiver . . . . . . . . . . . . . . . . . . . 17

2S400 MANUAL
3. S400 TRANSMITTER
TRANSMITTER FEATURES
TRANSMITTER LAYOUT
• Computer-designed, ergonomically styled case
• Servo reversing on all 4 channels (page 12)
• Adjustable control stick length (page 5)
• Trainer system feature compatible with all
current JR and JR Sport radio systems
• Easy-to-read transmitter LED battery
voltage indicator
• 9.6V 600mAh NiCad transmitter battery pack
* (not included with UL version)
• Power output approximately 750mw
System Name S400
Transmitter Body NET-E104
Receiver RS600/RS6UL
Charger NEC-221* (not inclued
with UL version)
Airborne Battery 4.8V 700mAh NiCad * (not
included with UL version)
Servos NES-ST47 x 4
SM15 x 2 (UL Version)
Accessories Mini Switch * (not included with
UL version)
Servo Accessories
12" Aileron Extension
* (not included with UL version)
Instruction Manual
2. SYSTEM SPECIFICATIONS
3.1
3.2
Transmitter LED Battery
Voltage Indicator
Neck Strap Attachment
(JRPA023 Optional JR Neck Strap)
Throttle/Rudder Stick
Trainer Button
Transmitter Antenna
Carrying Bar
Elevator Trim
Aileron Trim
Elevator/Aileron Stick
Power Switch
Throttle Trim
Rudder Trim
Important
Transmiter Battery Voltage
LED Indicator
Low: Do not fly
Mid: System should be recharged
Full: System OK to fly
Low Mid Full
Red Orange Green

Set Screw
Loosen
Tighten
3
S400 MANUAL
TRANSMITTER LAYOUT
3.2
TRANSMITTER SPECIFICATIONS
CONTROL STICK LENGTH ADJUSTMENT
NECK STRAP ATTACHMENT
Model Number NET-E104
RF 72MHz
Modulation PPM (FM)
Output Power Approximately 750mw
Current Drain 150mAh
Power Source 1.2V x 8 NiCad (9.6V 600mAh)
* UL Version requires
1.5V x 8 Alkaline batteries
(not included)
Output Pulse 1.0 –2.0ms
There is an eye hook on the front of the transmitter
for attaching an optional neck strap (JRPA023). The
eye hook is precisely positioned (see Section 3.2)
so that the transmitter will be perfectly balanced
when a neck strap is used.
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.
3.3
3.4
3.5
9.6V 600mAh NiCad
Transmitter Battery Pack
* (not included with UL version)
Trainer Cord Jack
Transmitter
Frequency Crystal
Carrying Bar
RudderElevator
Aileron
Throttle
Servo Reversing Switches
(Located behind Transmitter Battery Pack)
Back Cover

4S400 MANUAL
RECEIVER SPECIFICATIONS
Model Number RS600
Type 6-Channel FM ABC&W
Frequency 72MHz FM (PPM)
Sensitivity (Microseconds ) 5ms Minimum
Selectivity 8KHz/50db
Crystals JR Only
Weight 1 oz.
Size (W x L x H) 1.43" x 2.06" x .55"
Receiver Antenna 39" for all Aircraft
Frequencies
Model Number RS6UL
Type 6-Channel FM ABC&W
Frequency 72MHz FM (PPM)
Sensitivity (Microseconds ) 5ms Minimum
Selectivity 8KHz/50db
Crystals JR Only
Weight 7 g
Size (W x L x H) 1.38" x 0.75" x 0.50"
Receiver Antenna 39" for all Aircraft
Frequencies
RECEIVER FEATURES
• Patented ABC&W noise rejection system for
increased interference protection
• Compact, lightweight design provides easy
installation into most model designs
• State-of-the-art surface mount technology (SMT)
4. RS600 RECEIVER
4.1
4.2

5
S400 MANUAL
5. ST47 SERVO
SERVO FEATURES
• A zero deadband amplifier ensures accurate
neutral centering
• Low current drain
• State-of-the-art surface mount technology (SMT)
• A 3-pole ferrite cored motor for reliability
ST47 SERVO SPECIFICATIONS
Torque (oz/in) 47 oz.
Speed (sec./60°) .24 sec/60°
Weight (oz.) 1.55
Size (WxLxH) 0.73" x 1.52" x 1.32"
Motor 3-Pole Ferrite
SERVO LAYOUT
5.1
5.2
5.3
6. AIRBORNE (RECEIVER) BATTERY PACK (NOT INCLUDED WITH UL SYSTEM)
Model Number JSPB700
Voltage 1.2V x 4 NiCad (4.8V 700mAh)
Size (WxLxH) 2.24" x .59" x 2.05"
Weight (oz.) 3.3
Rubber Grommets
Servo Case
Servo Lead w/Connector
Servo Output Shaft
Servo Mounting Flange
Servo Arm/Horn
Servo Arm Retaining Screw
Servo Eyelet
Servo Mounting Flange
Rubber Grommets
Top View
SM8 SERVO SPECIFICATIONS (INCLUDED WITH UL VERSION)
Torque (oz/in) 7 oz. @ 4.8V
Speed (sec./60°) .08 sec/60°
Weight (oz.) 6 grams
Size (WxLxH) 0.83" x 0.77" x 0.45"
Motor 3-Pole Ferrite

6
S400 MANUAL
BATTERY CHARGER
The pilot lamps on the battery charger should
always be ON during the charging operation. If they
are not, check to make sure you have turned off
both the transmitter and receiver.
Do not use the charger for equipment other than
JR Sport. The charging plug polarity may not be the
same and equipment damage may result.
Do not use other manufacturers’ after-market
accessories that plug into the transmitter’s charging
jack. If you do, any damage that results will not
be covered by the warranty. If you are unsure of
compatibilities with your radio, seek expert advice
before doing anything to avoid possible damage.
During the charging operation, the charger’s
temperature is slightly elevated. This is normal.
Special note on JR Sport transmitter charge polarity:
8. CHARGING YOUR S400 RADIO SYSTEM PRIOR TO INSTALLATION
Before attempting to install/operate your S400
System, it is important that the system be charged
for approximately 24 hours to ensure that both
transmitter and receiver packs are at peak capacity.
Under normal conditions, subsequent recharging
of your S400 System will require only an overnight
charge (approximately 16 hours) to attain peak
charge capacity.
The charger supplied with this system is designed
to recharge your transmitter and receiver batter
packs at a rate of 50mAh.
The center pin of the charge receptacle on all JR
Sport brand radio systems is Negative polarity.
Therefore, the center pin on all JR Sport or JR
chargers is negative, not positive. Your JR Sport
radio system’s charge polarity is reversed from
many other manufacturers chargers. Beware of
improper polarity connections based on “color
code” wire leads as they DO NOT APPLY in this
instance.
You must always be certain that the center pin
on any charger used with this system is wired for
negative polarity, otherwise damage will occur to
the charge circuit of the S400. The JR Sport warranty
does not cover any system that is damaged by
reverse polarity charging.
7. CHARGER SPECIFICATIONS (NOT INCLUDED WITH UL SYSTEM)
Model Number NEC-221
Input Voltage AC 100-120V
Output Current 50mAh Transmitter/
50mAh Receiver
Charging Time 15 Hours
8.1
Right Side of Transmitter
Charging Jack
Center Pin
is Negative
Outside is Positive
Charger Pigtail for Transmitter
Black to Positive
Red to Negative
Charger Pigtail for Receiver
Red-Positive/Brown-Negative/Orange-Signal

7
S400 MANUAL
FLIGHT PACK CONNECTIONS
Connect all flight pack components of your S400 System as outlined in the diagram below:
9. PRE-INSTALLATION SYSTEM PREPARATION
ON
OFF
GEAR
RUDDER
ELEVATOR
AILERON
THROTTLE
ON/OFF SWITCH HARNESS
(JSP98017)
RECEIVER BATTERY
B700
FLAP
Optional
Optional
9.1
Not Used With
4-Channel System
Not Used With
4-Channel System
Rudder
Elevator
Aileron
Throttle
Note: On some types
of 2 and 3-channel
aircraft, the rudder
servo is plugged
in here.
Connect to Charger
for Charging
RS600 Receiver
Antenna
TRANSMITTER PREPARATION
Adjust each of the 4 trim levers (aileron, elevator, rudder, and throttle) to the center position.
9.2
Gimble Gimble

8S400 MANUAL
ST47 SERVO PREPARATION
Using a Phillips screwdriver, remove the servo arm retaining screws from each of the ST47 servos as shown
in Figure 1. Next, install 4 servo grommets and 4 servo eyelets to each ST47 servo as shown in Figure 2.
SYSTEM CHECK
Slide the power ON/OFF switch on your S400
Transmitter to the “ON” position.
Next, slide the ON/OFF switch on your flight pack
switch harness to the “ON” position.
By moving each of the two transmitter sticks in
a fore-aft, left-right motion, the corresponding
throttle, rudder, elevator, and aileron (optional)
servo arm/wheel will rotate. Please refer to the
transmitter stick function chart below.
With the system still activated (ON), move the
throttle stick to the neutral (center) position.
Double check to be sure that the four transmitter
trim levers are still in their neutral position.
Next, with the power still activated to the
transmitter and flight pack, remove the servo
arm/horn from each of the ST47 servos. Then, turn
the power “OFF” to the flight pack first, then the
transmitter. By doing this, the ST47 servos will
be left in their neutral position, and they are now
ready to be installed into your model.
NOTE: Save the servo arms/horns; they will be
reattached to the servos after installation.
9.3
9.4
Elevator
Elevator
Aileron
(w/optional servo)
Aileron
(w/optional servo)
Throttle
Throttle
Rudder
Rudder
Rubber Grommet
Servo Case
Servo Lead w/Connector
Servo Output Shaft
Servo Mounting Flange Servo Arm/Horn
Servo Arm Retaining Screw
Servo Eyelet
Figure 2
Figure 1
Servo Arm Retaining Screw
(Phillips Head).

9
S400 MANUAL
INSTALLATION SUGGESTIONS
Flight pack installation varies greatly from one
model to another. For your convenience, we have
included the photograph below outlining a typical
flight pack installation in a standard 4-channel
trainer type model airplane.
It is important to correctly install the radio system
in your model. Please read and carefully follow the
suggestions listed below:
1. For added protection, wrap the receiver and the
receiver NiCad in foam rubber that is at least
1/4" thick.
2. Run the receiver antenna through the fuselage
and make sure it is fully extended. Never cut
or bundle your receiver antenna — this will
decrease range and performance.
3. Rubber servo grommets are included with
your radio system and should be installed in
the servo flanges. The servos should then be
mounted on either hardwood rails or a plywood
tray with the mounting screws provided. Do not
overtighten the mounting screws. The flange of
the brass eyelets should face down (toward the
wood). See Section 9.3.
4. With the servo at neutral, install the required
servo arm/horn exactly 90° to the servo case as
shown in the diagram below.
5. Before installing the servo output arms, make
sure the servo is in its neutral position.
6. All servos must be able to move freely over the
full range of their travel. Make sure the linkages
do not impede servo travel. A stalled servo will
drain the battery pack within a few minutes.
7. In the case of gas-powered model aircraft,
mount the receiver power switch on the side
of the fuselage opposite the muffler to protect
the switch from exhaust residue. With other
types of models, mount the switch in the most
convenient place. Make sure the switch operates
freely and is capable of traveling its full distance.
10. FLIGHT PACK INSTALLATION
10.1
Servo Horn
Fuselage Servo, Receiver, Battery Installation Aileron (Wing) Servo Installation
Control Rod 90° with Servo at
Neutral/Center Position

Right
Rudder
Left
Aileron
Up Elevator
Right
Aileron
Full Throttle
Left
Rudder
Idle
10 S400 MANUAL
SERVO REVERSING
After radio installation, it is imperative that
the proper servo/control system direction be
established. Servo reversing allows you to alter the
direction of the servo/control surface movement to
match the direction of the transmitter stick. Please
refer to the chart in the following section below to
determine the proper control surface direction.
SETTING REVERSING SWITCHES
1. Connect all control linkages and check to see
that all servos move freely.
2. While standing directly behind the airplane, go
through the steps shown in the charts below to
check proper direction of the control surface.
3. Using the Servo Reversing Switches located
behind the Transmitter Battery Pack, adjust the
direction of each servo for proper operation.
10.2
10.3
Down Elevator
Right
Rudder
Up Elevator
Left
Aileron
Right
Aileron
Idle
Left
Rudder
Full Throttle Down Elevator
Servo Reversing Switches
(Located behind Transmitter Battery Pack)
RudderElevator
Aileron
Throttle (Mode II Transmitter Shown)
Elevator Carburetor
Low (Idle)
High (Full)
1/16"
Aileron Up
Aileron Down Rudder
Up Elevator Throttle Right Aileron Right Rudder

11
S400 MANUAL
The final step in your flight pack installation will
be to determine the amount each control surface
will move on your model at full transmitter stick
deflection. Please refer to your aircraft’s instruction
manual for suggested travel limits.
It is possible to increase/decrease the amount that
your control surface moves at full stick deflection
by mechanical adjustments.
It is imperative that the servo does not attempt to
push/pull the control surface past its mechanical
limits. This condition is called “binding.” When
a servo moves a control surface into a “binding”
position, the servo itself then becomes “stalled,”
unable to reach its full deflection. This condition
is both harmful to your control linkage and to your
servo. This “stalled” condition will also force the
servo to drain power more quickly from your flight
pack battery, thereby reducing your usable flying
time. Fortunately, servo “stalling” is usually easy to
detect by either a “buzzing” or “humming” sound
which comes from the stalled servo.
The following diagram is designed to help clarify
how to increase or decrease control surface travel
mechanically to eliminate control surface “binding”
and servo “stalling.”
To increase control surface travel, select a linkage
attachment point further outward on the servo arm
or further inward on the control horn closer to the
control surface (Figure 2).
To reduce control surface travel, select the linkage
attachment point close to the center of the servo
area or further out on the control horn on the
control surface (Figure 3).
Quite simply, by moving the control rod in on the
servo arm/wheel, control surface travel will be
reduced, and by moving the control rod out on
the servo arm, the control surface travel will be
increased. The opposite holds true for the control
surface arm (horn) as well. You may also use any
combination of these positions to achieve proper
control surface/servo travel.
NOTE: Once the appropriate servo arm/wheel and
control rod location has been established, secure
the servo arm to the servo output shaft using the
original servo horn screw.
Control Rod
Figure 1 Normal (Linear)
Linkage Set Up
Figure 2 Increased Control
Surface Movement
Figure 3 Reduced Control
Surface Movement
Servo Arm Control Surface
Arm (Horn)
Control Surface
Arm (Horn)
Control Surface
Arm (Horn)
Servo Arm Servo Arm
Control Rod Control Rod
ADJUSTING CONTROL SURFACE TRAVEL
10.4

12 S400 MANUAL
11. PRE-FLIGHT INFORMATION
S400 TRAINER SYSTEM
The S400 features a built-in trainer system. The
transmitter can be used as either a master (trainer)
or as a slave (trainee). The S400 is compatible
with all other current PPM selectable (FM) JR Sport
or JR radios that have built-in trainer systems. An
optional trainer cord is needed (JRPA130).
OPERATING THE TRAINER SYSTEM
1. Match the servo reversing and trims of both
radios.
2. Plug the optional trainer cord into both
transmitters.
3. Turn ON the master transmitter.
NOTE: The slave radio must be left OFF.
4. Test all the control functions on your aircraft
with the master radio.
5. Push the trainer button on the master
transmitter and check all the control functions
with the slave radio.
Special Note to Beginners: We strongly suggest
that you seek the help of an experienced model
airplane pilot prior to flying your new model.
RANGE TESTING YOUR MODEL
We suggest that before the initial flight of your
model, you first perform a ground range test to
ensure that the transmitting/receiving abilities of
your S400 perform properly. Conduct the range test
as follows:
Do not extend the transmitter antenna at this
time. Turn your S400 transmitter “ON”. Next, turn
the model switch “ON”. Slowly walk away from
the model while moving the control surfaces. The
system should function properly to a distance of
approximately 20–25 paces.
NOTE: If your test falls short of the described
range, confirm that your NiCad batteries are fully
charged. If this situation remains unchanged,
please contact the Horizon Service Center (address
and phone number at the back of this manual)
before attempting to fly your model.
11.1
11.2
11.3
Trainer Switch
Slave Transmitter
Power Switch Off
Master Transmitter
Power Switch On
Trainer Switch
Optional
Trainer Cord
(JRPA130)

13
S400 MANUAL
12. GENERAL NOTES
13. DAILY FLIGHT CHECKS
Radio controlled models are a great source of
pleasure. Unfortunately, they can also pose a
potential hazard if not maintained and operated
properly. It is imperative that you install your radio
control system correctly. Additionally, your level
of piloting competency must be high enough to
ensure that you are able to control your aircraft
under all conditions. If you are a newcomer to
radio controlled flying, please seek help from an
experience pilot or your local hobby shop.
Safety Do’s and Don’ts
• Ensure that your batteries have been properly
charged prior to initial flight.
• Keep track of the time that the system is turned
on so that you will have an idea of how long you
can safely operate your system.
• Perform a ground range check prior to the initial
flight of the day. See the “Daily Flight Checks”
section for information on how to do so.
• Check all control surfaces prior to each takeoff.
• Use frequency flags.
• Do not fly your model near spectators, parking
areas, or at any other area that could result in
injury to people or damage of property.
• Do not fly during adverse weather conditions.
Poor visibility can cause disorientation and
loss of control of your aircraft. Strong winds can
cause similar problems.
• Do not fly unless your frequency is clear.
Warning: Only one transmitter at a time can
operate on a given frequency. If you turn on your
transmitter while someone else is operating
a model on your frequency, both pilots will
lose control of their models. Only one person
can use a given frequency at a time. It does
not matter if it is AM, FM or PCM — only one
frequency at a time.
• Do not point the transmitter antenna directly
toward the model. The radiation pattern from
the tip of the antenna is inherently low.
• Do not take chances. If at any time during flight
you observe any erratic or abnormal operation,
land immediately, and do not resume flight until
the cause of the problem has been ascertained
and corrected.
1. Check the battery voltage on both the
transmitter and the receiver battery packs. Don’t
fly below 9.0 volts on the transmitter or below
4.7 volts on the receiver. To do so can cause a
crash of your aircraft.
NOTE: When you check the receiver battery, be
sure that you have polarities correct on your
expanded scale voltmeter (optional).
2. Check all hardware (linkages, screws, nuts,
bolts) prior to each day’s flight. Be sure that
binding does not occur and that everything is
properly secured.
3. Ensure that all surfaces are moving in the
proper manner.
4. Perform the following ground range check
before each day’s flying session:
• Do not extend the transmitter antenna at this
time. Turn the transmitter “ON.”
• Turn the model “ON.”
• Slowly walk away from the model while moving
the control surfaces. The aircraft should
function properly at a distance of 20–25 paces.
5. Ensure that all trim levers are in the proper
location.
6. Check to be sure that all servo pigtails and
switch harness plugs are secure in the receiver.
Also, make sure that the switch harness moves
completely in both directions.

14 S400 MANUAL
14. WARRANTY AND SERVICE INFORMATION
WARRANTY COVERAGE
REPAIR SERVICE INSTRUCTIONS
Your new equipment is warranted to the original
purchaser against manufacturer defects in material
and workmanship for three years from the date
of purchase. During this period, Horizon Service
Center will repair or replace, at our discretion, any
component that is found to be factory defective at
no cost to the purchaser. This warranty is limited to
the original purchaser and is not transferable.
This warranty does not apply to any unit which has
been improperly installed, mishandled, abused, or
damaged in a crash, or to any unit which has been
repaired or altered by any unauthorized agencies.
Under no circumstances will the buyer be entitled
to consequential or incidental damages. This
limited warranty gives you specific legal rights; you
also have other rights which may vary from state
to state. As with all fine electronic equipment, do
not subject your unit to extreme temperatures,
humidity or moisture. Do not leave it in direct
sunlight for long periods of time.
In the event that your equipment needs service,
please follow the instructions listed below:
1. Check all ON/OFF switches to be sure they are
off. This will speed the repair process of checking
battery condition.
2. Return your system components only
(transmitter, receiver, servos, etc.) Do not return
your system installed in a model car, boat, plane,
etc.
3. Use the original carton/packaging (molded foam
container), or equivalent, to ship your unit. Do
not use the carton itself as a shipping carton;
you should package the equipment carton within
a sturdy shipping container using additional
packing material to safeguard against damage
during transit. Include complete name and
address inside the carton, as well as clearly
writing it on the outer label/return address
area. Ship your equipment fully insured
and prepaid. Horizon Service Center is not
responsible for any damages incurred during
shipping.
4. Include detailed information explaining your
operation of the equipment and problem(s)
encountered. Provide an itemized list of
equipment enclosed and identify any particular
area/function which may better assist our
technicians in addressing your concerns. Date
your correspondence, and include your name,
mailing address, and a phone number where
you can be reached during the business day.
5. Warranty Repairs. To receive warranty service
you must include a legible photocopy of your
original dated sales receipt to verify your proof-
of-purchase date. Providing that warranty
conditions have been met, your radio will be
repaired without charge.
6. Normal Non-Warranty Repairs. Should your
repair cost exceed 50% of the retail purchase
cost, you will be provided with an estimate
advising you of your options.
Within your letter, advise us of the payment
method you prefer to use. Horizon Service Center
accepts VISA or MasterCard. Please include your
card number and expiration date.
Mail your system to:
Horizon Service Center
4105 Fieldstone Road
Champaign, Illinois 61822
[phone]
14.1
14.2

15
S400 MANUAL
15. FREQUENCY CHART
72MHz requires no special license to operate.
* It is important that you attach the enclosed frequency ID plates/flag to your S400 transmitter antenna.
CH.NO. FREQUENCY
15 72.090
16 72.110
17 72.130
18 72.150
19 72.170
20 72.190
21 72.210
22 72.230
23 72.250
24 72.270
25 72.290
26 72.310
27 72.330
28 72.350
29 72.370
30 72.390
31 72.410
32 72.430
33 72.450
34 72.470
35 72.490
36 72.510
37 72.530
CH.NO. FREQUENCY
38 72.550
39 72.570
40 72.590
41 72.610
42 72.630
43 72.650
44 72.670
45 72.690
46 72.710
47 72.730
48 72.750
49 72.770
50 72.790
51 72.810
52 72.830
53 72.850
54 72.870
55 72.890
56 72.910
57 72.930
58 72.950
59 72.970
60 72.990
72MHz 72MHz
Note: Channels 11-14 are not available through JR.

16 S400 MANUAL
RS600 SHIFT CHANGE
JR® has conveniently provided a means
to make the RS600 receiver truly a universal
piece of equipment by providing you, the
end user, with the means to change from
the supplied positive (+) shift normal JR
operation to the optional negative (-) shift
operation by moving a small jumper wire
in a block on the PC board. Please proceed
as follows:
1. Remove crystal (if installed) and the end
plate located at the crystal end of the case:
2. On the bottom of the case (with the FCC
sticker) you will find a small tab located
towards the servo wire in/out end of the
receiver. Lift that tab slightly while pulling on
the PC board gently.
3. Place the PC board on the work surface
as shown in the following picture, with the
Servo connectors to the right.
4. Locate block “A” on the PC board, and
the wire that is inserted into block “A”.
This jumper wire needs to be moved so
it is inserted into the center hole and the
opposite hole.
5. Please note from the drawing below
the proper jumper wire location for
positive (+) shift operation and
negative (-) shift operation.
POS NEG
CHANGING THE RS600 SHIFT FROM POSITIVE(+) TO NEGATIVE(-)
16.1

17
S400 MANUAL
The RS6UL is a high-performance receiver
specifically designed for hand-launch gliders,
park and slow flyers, or small gas planes
up to approximately .30-size. The RS6UL,
featuring JR’s patented ABC & W interference-
fighting technology, exceeds the AMA
standards for 2im and 3im for unmatched
reliability. The RS6UL also features an
outstanding operating range that puts it
at the top of the class in micro receiver
performance.
The RS6UL is available in either positive shift
(JR, Airtronics), or negative shift (Futaba,
HiTec) versions.
SPECIFICATIONS
Size: 1.38” x 0.75” x 0.50”
Weight: 7 g
Frequency: 72MHz FM (PPM)
Crystals: JR only
Channels: 6
Voltage: 3.2–7.2V
Antenna: 39”
RANGE TESTING
Prior to the initial test flight of the model,
a range test should be performed to insure
proper operation. When properly installed,
the RS6UL should have a minimum ground
range (Tx antenna down) of approximately
20–25 paces. If the range is less, check to
insure that the receiver antenna is extended
and routed outside of the model. The
receiver antenna should also be positioned
as far away from other electrical components
(motor, speed controller, servos, etc.) as
possible. Please contact the Horizon Service
Center for further instructions.
Note: Under no circumstances
should the length of the receiver
antenna be altered, as this will
directly affect the tuning and overall
range of the receiver.
SERVO CONNECTION
Unlike other JR® receivers, the brown (negative)
wire on the servo leads should face upwards
toward the RS6UL’s top label. If the servo
leads are installed in the opposite (standard)
direction, the servos will not function. Since
the RS6UL is designed with center pin positive
polarity, no damage will occur from improper
connection of JR servos.
Brown/Negative
Red/Positive
Orange/Signal
Side View RS6UL
ACCESSING THE 6TH CHANNEL
When using a separate battery power source
(mainly with glow-powered models), it will be
necessary to use an optional Y-Harness (JSPA002)
so that the battery and the 6th channel servo can
access the battery/Aux 1 port simultaneously.
When using the RS6UL in an electric-powered
model with an electronic speed controller, the
RS6UL will receive power through the throttle
channel connection, leaving the 6th channel
directly accessible.
INFORMATION REGARDING THE RS6UL RECEIVER
16.2

DISTRIBUTED EXCLUSIVELY BY HORIZON HOBBY, INC. CHAMPAIGN, IL 61822
horizonhobby.com
© 2005
MANUFACTURED BY JR REMOTE CONTROL
7409