6
Installing the Batteries
The R-1 transmitter requires 8 AA batteries (not included).
To install the batteries, remove the battery door on the bot-
tom of the transmitter and install the batteries such that the
coil spring in the battery holder contacts the negative (flat)
side of the battery. Alkalines will provide power for approxi-
mately 7 hours of use. An optional rechargeable Ni-Cad bat-
tery pack is also available separately
(part #JRPB9280).
CAUTION! When charging Ni-Cads in the R-1, note
that the charge jack is center pin negative (see
diagram below). Be sure to use a JR charger or
verify that the charger you’re using is center pin
negative before charging. Typical slow charge
rates are 50mA for 12 hours, while most Sanyo
brand AAs can be charged at up to 1 amp. Be
sure to use a reliable peak charger if you’re fast
charging your transmitter and remember the cen-
ter pin is negative!
D.S.C. (Direct Servo Contro l )
The R-1 features a D.S.C. function that allows the operation of
the servos/speed controller without transmitting a signal. This
allows testing and adjustment of the radio/speed controller
without affecting others that may be on the same frequency.
Note: An optional D.S.C. cord (part # JRPA134) is
required to operate the D.S.C. function.
To operate, plug the male end of the D.S.C. cord into the
D.S.C. jack located under the panel on the front upper left of
the transmitter. The other radio connector end of the D.S.C.
cord is inserted in the battery slot in the receiver. Note: If
using a gas car, a Y harness will need to be used so the bat-
tery and D.S.C. cord can both be installed in the battery slot
on the receiver (part #JRPA133).
Now turn on the speed controller switch (electric) or the
receiver’s power switch (gas) while leaving the transmitter’s
power switch turned off. If nothing happens, you may need
to charge the batteries in your car.
The servos/speed controller should work normally while no
transmission is taking pace.
Note: Only JR brand receivers are compatible with the
R-1’s D.S.C. function. After-market receivers will
not work with the D.S.C. function.