FUTABA MCR-4A Quick Start Manual

FET AMP WITH AM 4 CHANNEL RECEIVER
FOR MOTOR AIRCRAFT
D60624 MCR-4A
RECEIVER WITH LINEAR CONTROLLER
Thank you for your purchase. When using the MCR-4A with an FP-4N AM or
NEW SKY ATTACK r/c set, read this manual with the FP-4N AM or NEW SKY
ATTACK instruction manual.
|Z_FEATURES OF THE MCR—4A
e FET amplifier with miniature lightweight 4-channel receiver and motor
controller in one pack.
© Since the drive motor power supply (7.2 V NiCd battery pack, etc.) can also
be used to power the receiver and servos, troublesome wiring is unnecessary
and the model can be made lighter.
e Futaba high power MOS FET is used in the amplifier. Motors from 280 to
540 class can be controlled.
Built-in high performance low voltage "autocut'' circuit prevents loss of
control due to power supply voltage drop during flight.
@ Since the motor speed can be controlled steplessly from maximum alow to
high, acrobatics equal to those of engine aircraft can be reproduced even
with a 280 class motor aircraft.
FEATURES OF MCR—4A RECEIVER
e High performance AM 4-channel receiver.
@ Narrow band design using a narrow band ceramic filter.
@ New miniature custom IC used in decoder.
@ New crysta! socket is invulnerable to vibration and shock, eliminates faulty
contact.
è Built-in heat protector prevents overheating of the amplifier by a continuous
overcurrent.
@ Motor idle or maximum slow can be arbitrarily set at the transmitter throttle
stick maximum slow position by built-in idle point trimmer.
Built-in constant voltage power supply circuit operates the receiver servos at
the best voltage at all times.
|7_MCR—4A FET AMP WITH BUILT-IN RECEIVER
RECEIVER AMP.
Current drain : 26 mA Resistance loss : 0.01 Q
MCR—4A HANDLING INSTRUCTIONS AND PRECAUTIONS
Z aA
The parts inside the dotted
lines are not included.
MCR— 4A, servo, and battery connections
Power switch
Always use a noise killer
capacitor onthe electric motor.
Idle point trimmer Drive motor
7 7.2 V NiCd
1
1
1
[j
[]
1
1 Rudder servo (CH4)
[j
Receiver crystal H
r
'
'
i
[j
t
$
(Cannot be con-
| ~ nected when used
with T3NBR.)
` The MCR4A is for aircraft (fixed wing aircraft, S
helicopter) frequencies. _ It cannot be used on N
land or water (cars and boats).
@ The MCR4A can control 280 class to 540 class motors.
© 6 V (5 batteries), 7.2 V (6 batteries), of 8.4 V (7 batteries) NiCd battery pack
can be used with the MCR4A. (When using a 540 class, etc. motor, purchase an
NiCd battery pack: connector off the market. Be sure that the (+) and (—)
polarities are correct. If the (+) and Eb) connections are reversed, the MCR4A
may be damaged beyond repair.)