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The Radio System
The following is an overview of the various functions and adjustments found on your Losi/HIGHroller radio system. Since the
HIGHroller operates on a radio signal, it is important for you to read and understand about all of these functions before driving the
model.
Losi 27MHz AM Radio System
Receiver
There is no adjustment required of the receiver. Please note the different slots for connection.
Changing Frequencies/Channels
The HIGHroller radio operates on 27MHz AM and has 6 different frequencies/channels available. The HIGHroller radio is equipped
with changeable crystals that allow you to change the frequency/channel you operate on. This is especially useful when you want
to run a group of Losi HIGHrollers at the same time. When changing crystals/channels, you must always replace the crystals as a
matched set with one each going in both the transmitter and the receiver in the truck. Each of the 6 different channels are numbered
and color-coded. Each set includes a unique crystal for the receiver marked (Rx) and one from the transmitter marked (Tx). To change
the crystals, gently pull them out. Then, line up the two pins of each new crystal with its socket. Carefully push them into place. DO
NOT force them as damage can occur. If they do not slide into the socket easily, check for bent or misaligned pins.
Channel 1
Brown 26.995MHz
(LOSB1094)
Channel 2
Red 27.045MHz
(LOSB1095)
Channel 3
Orange 27.095MHz
(LOSB1096)
Channel 4
Yellow 27.145MHz
(LOSB1097)
Channel 5
Green 27.195MHz
(LOSB1098)
Channel 6
Blue 27.255MHz
(LOSB1099)
Factory Settings of Radio/ESC
The Electronic Speed Control was calibrated together with the radio system at the factory. When you turn on and run the 1/10
HIGHroller for the first time you may be required to slightly adjust the Throttle Trim. If the vehicle creeps in reverse or in forward,
make a fine adjustment to the Throttle Trim knob on the transmitter. Sometimes the bumps and bounces of transportation can
slightly alter the settings.
The Transmitter
Steering Wheel
: Controls direction (left/right) of the model.
Throttle Trigger
: Controls speed and direction (forward/
reverse) of the model.
Antenna
: Transmits signal to the model.
On/Off Switch
: Turns the power on/off for the transmitter.
Indicator Lights
: Green (right) light indicates adequate
battery power. Red (left) indicates signal strength.
ST. Trim
: Adjusts the “hands off” direction of the model.
TH. Trim
: Adjusts the motor speed to stop at neutral.
Steering Rate
: Adjusts amount front wheels move when the
steering wheel is turned left and right.
ST. REV
: Reverses the function of the steering when the
wheel is turned left or right.
TH. REV
: Reverses the function of the speed control when
pulled back or pushed forward.
Bottom Cover
: Covers and holds the batteries that power
the transmitter.
Transmitter Crystal
: Determines frequency/channel you
transmit on. The receiver must have a matching frequency/
channel to operate.
