FUTABA CONQUEST, FP-4NL, FP-6NLK User Manual

Futaba

DIGITAL PROPORTIONAL

RADIO CONTROL

AM

CONQUEST

Thank you for purchasing a Futaba digital proportional radio control set.

Please read this manual carefully before using your set.

FEATURES OF FP-6NLK/4NL

TheCONOUESTFP-6NLKand FP-4NL are 6 channel (6NLK)
and 4 channel (4NL) AM proportional radio control set with
a ergonomic case created as a result of the exhaustive pursuit
of easier operation, newly designed sticks for smooth and
positive operation, servo reversing switch for each channel,
and other innovations based on the opinions and needs of
many RC modelers.
Please read this manual before using your new set.

TRANSMITTER FP-T6NLK/T4NL

• Reliability substantially improved by using industrial robots
to assemble the PC board.

• Servo reversing switch for each channel. Servos are reversed
by using this switch.

• Newly designed open gimbal sticks operate smoothly and
positively.
Spring tension mechanism allows adjustment of the operat­ing feel of the stick lever.

• Nonslip adjustable lever head allows adjustment of the stick
length as desired.

• RF PC board module style system in transmitter.

• Functional case, created as a result of the exhaustive pursuit
of

easier

operation,

has

evolved a thick

case

which

fits

into

the palm of the hand.

•Aileron, Elevator dual rate function. (Dual rate ON, OFF)
(6NLK)

• Easy to read square transmitter battery voltage/output level
meter.

• Excellent radiation efficiency, strong 8-stage telescoping
antenna.

• Neck strap bracket provided as standard. Operation is easier
if the transmitter is hung from your neck by using the
optional neck strap.

• Built-in NiCad battery.

RECEIVER FP-R7H (6NLK)

•A compact, lightweight, rugged 7-channel receiver virtually
invulnerable to power supply voltage changes thanks to new
Futaba Custom 1/C, IR-2501.

•Newly designed AGC circuit minimizes interference and dead
points.

•Fiberglass reinforced epoxy resin PC board with thru-the­hole plating improves vibration and shock resistance.

•Three-wire gold-plated mini block connector is compatible

with all Futaba servos.

RECEIVER FP-R4F (4NL)

•Compact, lightweight, rugged construction.

•Three-wire gold-plated mini block connector is compatible
with all Futaba servos.

• Four channel.

RECEIVER FP-R4H,

(4NL)_______________

• High performance AM 4 channel receiver in which miniature

size and light weight have been achieved by using the PC
board space to the maximum.

•

Narrow band design using a narrow

band

ceramic

filter-

resists adjacent channel interference.

• Noise resistance achieved by using a pulse noise rejection

circuit.

• New C MOS miniature IC used in the data coder increases

reliability substantially.

• New type subminiature, highly reliable pins used at the

crystal socket also increase reliability. The crystal can be
changed from the outside.

• Thick film gold-plated connector pins eliminate poor contact

and improve reliability against shock and vibration.

SERVO FP-S38
Very-precise neutral, small, rugged servo

• New indirect drive potentiometer improves vibration and
shock resistance and neutral accuracy.

• Futaba low-power custom 1C provides extremely high
torque, narrow dead band, and superior tracking.

• Fiberglass reinforced PBT (polybutylene terephthalate)
injection molded servo case is mechanically strong and in­vulnerable to glow fuel.

• Strong polyacetal resin ultra-precision servo gear features
smooth operation, positive neutral, and very little backlash.

•

Fiberglass

reinforced epoxy resin

PC

board

with

thru-the­hole plating improves servo amp vibration and shock resist­ance.

• Three wire-gold-plated 3p mini connector.

•Special grommet simplifies mounting of the servo and has
an excellent cushioning effect.

•Six

special

adjustable

splined horns.

• High 34.8 oz. in (2.5kg-cm) maximum output torque allows
use in almost any model.

SET CONTENTS AND RATINGS

(Specifications are subject 10 change without prior notice.) Operating System

Transmitter
Receiver
Servo
NiCad Battery
Switch
Others

CONOUEST

FP-6NLK
FP T6NLK x 1 FP-T4NL x 1
FPR7Hx1 FP.R4Fx 1/FP-R4HX 1

FP-S38 x 4

NR

4M

x

SSW-Hx

Charger. Frequency flag

Mounting screw.

CONQUEST

FP-4NL

FP

S38 x 3

1
1

. Spare horn,

TRANSMITTER FP-T6NLK /T41ML

2 stick,servo reverse
Aileron, Elevator dual
switch. Landing gear
switch (5ch) & switch
(6ch) 6NLK only

Transmitting frequency : 72MHz bands, 75MHz

bands
Modulation system : AM
Power requirement : 9, 6V, NiCad battery

(NT-8LP)

Current drain : 190mA

RECEIVER FP-R7H / R4F/ R4H

Receiving frequency : 72MH/ bands, 75MHz bands
Crystal replacement system: Frequency can be changed

within the same frequency
band by changing the pre-

cision crystal.
Intermediate frequency : 455kHz
Power requirement : 4, 8V, NiCad battery

Common use with servo

Current drain : 4.8V, 10mA

Dimensions

R7H 1.6x 2.6 x 0.8 inch

(41 x 69 x 21

mm)

R4F 1.6 x 2.3 x 0.7 inch
(40.2 x 58.5 x 19

mml

R4H 1.26x 2.05 x 0 77 inch
(32 x 52 x 19.4

mm)

Weight

R7H
1 7oz(50g)

R4F

1.6oz

(46g)

R4H

1.06oz (30g)

Receiving range : 550 yards (500m) on the

ground. 1,100 yards
(1,000m) in the air.
(at the best conditions)

Throttle trim

lever

SERVO FP-S38

Control system : + pulse width control
Operating angle : One side 45° or more

(including trim)
Power requirement : 4.8V ~ 6V
Current drain (IDLE) : 6.0V, 8mA
Output torque : 34.8oz.in (2.5kg-cm)

Operating speed : 0.23sec/60°

Dimensions : 1.59 x 0.79 x 1.38 inch

(40.5 x 20 x 35.3mm)

Weight : l.44oz (41g)

6th CH switch (6NLK only)

Aileron dual switch (6NLK only)

Neck strap bracket

Rudder
trim lever

Rudder

Nonslip adjustable

lever head

Aileron

Elevator

In the following descriptions, all the servo reversing switches

are assumed to be in the normal position. When they are in the

reverse position, operation is the opposite of that described.

23) Battery cover

Elevator
trim lever

Aileron

trim

lever

Charging

jack

Transmitter

NiCad battery

NT-8LP

Power switch

Servo reversing

switches

Fig.

1

Throttle

Level meter

Elevator
dual switch
(6NLK only)

Landing gear switch

(5ch) (6NLK only)

(6NLK only)

Elevator dual trimmer

Handle

Aileron

dual
trimmer

Antenna

TRANSMITTER FP-T6NLK/T4NL CONTROLS

Fig. 1 shows the name of each part of the transmitter.

Memorize the position and operation of each

switch and control.

Aileron
Elevator
Throttle
Rudder

Aileron operation

Elevator operation
Throttle operation
Rudder operation

Landing gear switch
(6NLK only)

Raising and lowering the
landing gear.

6chCH switch (6NLK only)
Use for controlling model

airplane flaps, etc. The

The servo is connected
to 6 channels.

Fig.

2

Aileron trim lever Aileron trimmer
Elevator

trim

lever

Elevator

trimmer

Throttle trim lever Throttle trimmer

Rudder trim lever Rudder trimmer

Aileron dual rate switch (6NLK only)

Aileron dual rate ON-OFF switch. When set to the upper
position, dual rate is turned on, and when set to the lower
position, dual rate is turned off.

Aileron dual rate trimmer (6NLK only)
This trimmer sets the aileron travel when the aileron dual
switch is set to on. When the dual switch is set to ON, the

servo throw can be set to an arbitrary angle smaller than
when the dual switch is OFF (normal) as shown in the
figure. Use the throw matched to the aircraft and the
maneuvers to be performed.

servo is operated at the
and

positions. The

position is off.

Elevator dual rate switch (6NLK only)

This switch turns the elevator dual rate function on and

off. The lower position is dual rate OFF and the upper
position is dual rate ON.

Elevator dual rate trimmer (6NLK only)

This trimmer sets the elevator deflection angle when the

elevator dual rate switch is in the ON position. It has the
same functions as aileron dual rate.
Power switch

The upper position is ON.

Level meter
This level meter indicates the transmitter battery voltage.

Neck strap bracket

Bracket for the neck strap (optional).

Antenna
Strong telescoping antenna. Extend it to its full length
when using the transmitter.

Handle

Use this bar to carry the transmitter.

Nonslip adjustable lever head

The length of the lever head can be adjusted to fit the

operator.

Adjust to the length of your hand.

Lever head

in the arrow direction, and adjust the head to
the most comfortable length, then lock it by
turning it in the direction opposite the arrows.

Fig.

4

Charging jack

Battery charge jack for built-in NiCad battery.

•CHARGING OF
TRANSMITTER
AND RECEIVER

NI-CAD BATTERIES:

Recharge the receiver and
transmitter NiCad batteries

as shown in Fig. 5.

Notes:

1) First, connect to TX NiCad

and red lamp goes on.

2) Then connect to RX NiCad
after connecting, L, E D,

changes color from red to
greenish red (orange) which
indicates that both TX and
RX NiCads are being charged.

3) In case of separate charging

L, E, D, color will be;
RX NiCad - Green.
TX NiCad - Red.

Fig. 5

•Connect the charging plug of the FBC-8B charge to the
transmitter charging jack, connect the 3P connector of
the FBC-8B to the receiver NiCad battery (NR-4M), and
plug the FBC-8B to a 117VAC outlet as shown in this figure.

•The Receiver battery can be used about 10 times at 10
minutes per flight between rechargings.

•Charge the batteries for about 15 hours. When the set is not
in use for some time, repeat discharge and charge two to

three times before use. (If the batteries are not used for a
long time, their capacity will go down).

•FBC-8B charges transmitter and receiver NiCad batteries in-

dependently or simultaneously.

Battery cover

Remove this cover
when switching the
servo reversing
switches.

Servo reversing switches

Using the servo reversing switches

• The left side of each switch is the normal position.

• The servo reversing switches reverse the direction of opera­tion of the servos.

Elevator servo
reversing switch

Aileron servo
reversing switch

Throttle servo
reversing switch

Rudder servo

reversing switch

Fig.

7

Landing
gear ser
reversing
switch.

(6NLK ONLY)

NORM —Normal
REV —Reverse

After linkage is complete, inspect the servos. If the direction of

operation of the stick lever and the direction of operation of a
servo are opposite, switch the appropriate servo reversing switch.

24 Transmitter NiCad battery NT-8LP

The tension of the stick lever spring can be adjusted.

When adjusting the
aileron, and elevator
the inside module

is removed.

Use a small Phillips

screwdriver.

When the dual rate switch is ON, the servo throw can be adjusted
within this ranqe with the dual rate trimmer.

Fig.

3

Lever head

Unlock lever heads

and

, by turning them

Elevator

Aileron

Fig.

8

Rudder

When these screws are
removed, the back cover
can be removed.

• The tension of the
spring can be ad
justed by removing
the transmitter
back cover and

turning the screw

for each stick. Set

the springs for the
best stick feel.

RECEIVER FP-R7H/R4F/R4H & SERVO FP-S38

PRECAUTIONS

• Connect the receiver, servos, switches, and battery firmly as
shown in Fig. 9. Then extend the transmitter and receiver
antennas fully.

• Set the transmitter power switch to ON. Then set the receiv­er power switch to ON. The servos stop near the neutral
position. Operate the transmitter sticks and check that each

servo follows the movement of the stick.

•Connect

the

pushrod

to

each

servo

horn,

then

check if

the
direction of travel of each servo matches the direction of
operation of its transmitter stick. To reverse the direction
of servo travel, switch the servo reversing switch.

• Operate each servo over its full stroke, and check if the push­rod binds or is too loose. Applying unreasonable force to the
servo

horn

will

adversely

affect

the

servo

and

quickly

drain
the battery. Always make the travel of each control mecha­nism somewhat larger than the full travel (including trim) of
the servo horn. Adjust the servo horns so that they move
smoothly even when the trim lever and stick are operated
simultaneously in the same direction.

• Be alert for noise.
This set is noise-resistant, but is not completely immune to
noise. We recommend the use of noiseless parts.

•When installing the switch harness, cut a rectangular hole
somewhat larger than the full stroke of the switch and install
the switch so that it moves smoothly from ON to OFF. This
also applies to the switch mount when the switch is installed
inside the fuselage and is turned on and off from the outside
with a piece of wire, etc. Install the switch where it will not
be exposed to engine oil, dust, etc.

SERVO MOUNTING

(Using wood screws)

Fig.

10

Receiver, servos, switches, and battery

connections

Receiver crystal

FP-R7H
7 channel AM Receiver

Landing gear
adapter

Landing
gear servo

Landing
gear servo

Rudder servo

Throttle servo

Charge

Antenna wire

Power switch

Rudder
servo

Throttle

control
servo

Elevator
servo

Aileron
servo

NR-4M

4NL
3 servos are provided
as standard

Antenna wire

Receiver

FP-R4F/R4H

Crystal

NR-4M

Fig.

9

6NLK
4 servos are provided

as standard.

Ailreon servo

The parts enclosed by the
dotted lines must be

purchased separately.

6th CH Servo

• Even though the receiver antenna is long, do not cut or
bundle it.

• Install the servos securely. Tighten the mounting screws
until

the

rubber

grommet

is

crushed slightly.

If

the

screws

are

too

tight,

the

cushioning effect

will

be

adversely

affect-

ed.

• The crystal can be changed from the outside of the receiver
case. Always use the Futaba transmitter/receiver matched
crystal set to change the band.

• Spare servo horns are supplied. Use them as needed.

• Wrap the receiver in sponge rubber. Waterproof and dust­proof the receiver by placing it in a plastic bag and wrapping
a rubber band around the open end of the bag. Do the same
with

the

receiver/servo

battery.

• Use the rubber bands wrapped around the receiver to hold
the servo and switch leads.

• After mounting is complete, recheck each part, then check
the range by making the transmitter antenna as short as
possible, extending the receiver antenna fully, and operating
the set from a distance of 20m to 30m. The movement of
each servo should follow the movement of each stick of the
transmitter.

• After mounting and checking are complete, take your model

to the shop where you purchased the set, or to an experienc­ed radio control modeler, and ask them to teach you how to

handle your radio control set in the proper manner and to
inspect your set-up carefully.

•To

enjoy radio

control

models

fully,

be sure

to

observe

all

safety standards.

AILERON AND ELEVATOR DUAL (dual rate ON,
OFF) ADJUSTMENT (6NLKonly)

When the dual switch is set to ON, the servo throw is made
smaller by the amount shown by the hatched lines in Fig. 10.
The servo throw can be set from 40% to 100% of the total
travel by adjusting the trimmer next to the switch with a flat
bladed screwdriver. When the dual rate switch is set to OFF,
the throw is normal. When desiring a larger throw, such as for
spins, etc., set the dual rate switch to OFF and adjust the
throw mechanically by horn and rod adjustment. Set the
dual rate switch to on for level flight and adjust the trimmer
for the required amount of throw.
When the dual rate switch is set to OFF, dual rate is set and
the throw becomes large.

This horn permits shifting of the
servo neutral position at the servo
horn. Setting and shifting the
neutral position
a) Angle divisions

b) Effect

Fig.

12

Fig.

13

1) The splined horn has 25 seg-

ments. The amount of change per
segment is; 360: 25=14.4°

2) The minimum adjustable angle

is determined by the number of
arms or number of the holes. For
four arms, the minimum adjustable
angle is:

To shift the holes center line to
the right (clockwise) relative to
baseline A, shift arm 2 to the po­sition of arm 1 and set it to the
position closest to baseline A.

(Example] For a four arm horn,

the angular shift per segment is

14.4° . The shift to the right is 90°

-

(14.4

x6) = 3.6°

To shift by the same angle in the
opposite direction, use the oppo­site arm number.

Fig.

14

Arm 3 shift 4.8° to the right, arm
6 shifts 2.4° to the left,and arm 4
shifts 7.2° to the right and left.

For a six arm horn, turn the arm
counterclockwise and set arm 2
to the position of arm 1 . The ad-

justable angle is 60° - (14.4 x 4)

=2.4°.

Fig.

15

The following splined horns are optional.

Fig.

16

HORN A HORN B HORN C HORN D HORN E HORN P

The flag can be attached to, and removed

from, the end of the transmitter antenna
with one touch.

USING THE ANTENNA FREQUENCY FLAG

Insert the frequency flag into
the flag holder as shown here.

Fig. 17

No.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

17.

1 8

19.

20.

21.

22.

Part Name
Upper case
Middle case
Bottom case
Metal bearing
Potentiometer
Potentiometer drive plate
Motor

Motor pinion
Screw
1 st gear
2nd gear
3rd gear
Final gear
Intermediate shaft
2nd shaft
Servo horn D
Binding head tapping screw 2.6 x 8
Printed wiring board S138
Printed wiring board S38

S38 ..... with 3PC cord

w/gum bush
Pan head truss screw
Nameplate S38

Part No.

PCS-38

S04134
139995
S02753
S91218
S02461
J55016
FGS-38
FGS-38
FGS-38

FGS-38
S02495
S02494

FSH.6W
FSH-41
AS1305
AS 1304
FPC-3M
S90045
J50360
S60147

Australia: FUTABA SALES AUSTRALIA PTY. LTD.,

MELBOURNE TEL: [phone]

Argentine: MODELISMO AERONAUTICO DEGA SRL.

BUENOS AIRES TEL: [phone]

Canada: UDISCO LTD., MONTREAL

TEL: [phone]

Chile: HOBBY LANDIA, SANTIAGO

TEL: 743957

Denmark: FUTABA IMPORT DENMARK,

To insure prompt service, please follow the instructions given below.

1. Charge the batteries for at least 18 hours prior to shipment.

2. Return the system only. Not your complete installation. Remove the servos from their
mounts and remove the foam padding from the receiver.

3. Plugs or other modifications which interfere with factory test procedures will be returned to
factory standard at your expense.

4. Carefully pack all components individually, using sufficient packing material to prevent
damage during shipment.

5. Include a brief but thorough explanation of all problems and service required and tape it to
the back of the transmitter. Place a label describing the function of the servo on each servo.

6. Be sure to include your full address and tel. No., zip code inside the box as well as on the
outside.

7. Include a packing list of all items being returned, and double check to make sure that all
items are packed.

8. Upon receipt of your equipment at the Futaba factory, an estimate of the cost of repair
(over $25.00 only) will be sent to you. Your equipment will then be repaired and returned

to you upon receipt of payment or C.O.D. (cash).

This factory repair service applies only to the continental U.S.A., Hawaii, and Alaska.

COPENHAGEN TEL: [phone]

England: RIPMAX LIMITED, LONDON

TEL: [phone]

Finland: NORETRON KY, HELSINKI

TEL: [phone]

Greece: C. & G. MACRIYIANNIS CO., PIRAEUS

TEL: [phone] • or 021-4176191

Hong Kong: RADAR CO. LTD. TEL: [phone]
Italy: RADIOSISTEMI SRL, Carrara

TLX: 500494 FORTIM I

FAX: [phone]

Lebanon: KHAIRALLAH MODELCRAFT, BEIRUT

TEL: 326-681

New Zealand: AMALGAMATED WIRELESS

(AUSTRALIA) N.Z. LTD. WELLINGTON
TEL:58 979

Norway: HARALD LYCHE CO. A/S, Drammen

TEL: [phone]

Singapore: SINGAPORE HOBBY SUPPLIES

TEL: [phone]

South Africa: REDIPAK (PTY.) LTD.,

• When requesting repair of trouble that has occurred suddenly of from long use,
describe the trouble symptoms in as much detail as possible.
This will facilitate detection of the trouble point and shorten the repair period
greatly.

• Defects caused by faulty materials or workmanship will be corrected free of charge.

• Always send the guarantee provided with this manual together with the set to be
repaired.

• This limited warranty is null and void if the set has been tampered with or dis-

assembled.

Refer to warranty statement for details.

JOHANNESBURG TEL: 21-1511

Spain: HOBBY & TOY INTERNATIONAL,

VALENCIA TEL: [phone]

Sweden: RADIO CONTROL CENTER,

JONKOPING TEL: [phone]

U.S.A.: FUTABA CORPORATION OF AMERICA,

CALIFORNIA TEL: [phone]

W.Germany: ROBBE MODELLSPORT GMBH,

GREBENHAIN TEL: [phone]