RadioLink RC4GS V2 User manual

RC4GS V2
Instruction Manual
Adaptable to RC Cars/Boats/Robot
CE FCC RoHS
Technical updates and additional programming examples available at https://www. radiolink.com
V1.4

RadioLink Electronic Limited
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1
Thank you for choosing Radiolink 2.4 GHz 4CH radio -- RC4GS V2. RC4GS V2 is default 4
channels transmitter and works with a receiver R6FG which with gyro integrated and high
voltage servo supported.
RC4GS V2 OVERVIEW

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Never operate your model during adverse weather conditions. Poor visibility can cause
disorientation and loss of control of your model.
Never use this product in a crowd and illegal area.
Always ensure the trim levers at 0 and battery properly charged before connecting the receiver.
Always check all servos and their connections prior to each run.
Always be sure about turning off the receiver before the transmitter.
This product is not a toy and is NOT suitable for children under the age of 14. Adults should
keep the product out of the reach of children and exercise caution when operating this product in
the presence of children.
Never operate your model during adverse weather conditions. Water or moisture may enter
the transmitter inside through gaps in the antenna or joystick and cause model instability, even
out of control. If running in the wet weather(such as game) is inevitable, always use plastic bags
or waterproof cloth to cover the transmitter.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause
undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
SAFETY PRECAUTIONS
BASIC OPERATION
WARNING

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Display on LCD Screen
When powering on RC4GS V2, Model Name, Subsidiary ID, Transmitter Name, Transmitter
Battery Voltage, Model Battery Voltage, Steering Trim and Throttle Trim will be displayed on LCD
screen.
Note The Subsidiary ID won’t display until the function is activated in the menu ID SEED.
The telemetry function of model battery voltage can only be realized with R7FG/R8F.
When binding is done, there’s signal tower on top middle of the screen. As there’s no amplifier
module added on R6FG, the signal telemetry from receiver is about 80m(262.5ft). If the distance
is longer than 80m, the signal tower may disappear but the control range of RC4GS V2 is as long
as 400m(1312ft).
Receiver R6FG(Standard Pack)
Receiver packed with RC4GS V2 is R6FG, 2.4GHz 6 channels, gyro integrated and high voltage
servo supported.

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Note The telemetry of model voltage can only be realized with the receiver R7FG/R8F.
Binding
1. Put the transmitter and the receiver close to each other (about 50 centimeters) and power
both on.
2. Switch on the transmitter and the led on R6FG will start flashing slowly.
3. There is a black binding button(ID SET) on the side of receiver. Press the button for more than
1 second and release, the led will flash quickly, meaning binding process is ongoing.
4. When the led stops flashing and is always on, binding is complete and there will be a signal
tower shown on top of the LCD screen of the transmitter. If not succeed, the led will keep flashing
slowly to notify, repeat the above steps.
Note NO gyro by default as factory setting. Since integrated gyro in R6FG will self-check, it is
very important to remain R6FG still when powering it on. There are two LED indicators on R6FG.
GREEN indicates the normal working mode while RED indicates the gyro working mode. When
RED is off means NO gyro. If binding is not successful, the green led will keep flashing to notify.
Note of Receiver Usage
1. Keep antennas as straight as possible, or the effective control range will reduce.
2. Big models may contain metal parts that influence signal emission. In this case, antennas
should be positioned at both sides of the model to ensure the best signal status in all
circumstances.
3. Antennas should be kept away from metal conductor and carbon fiber at least half inch away
and no over bending.
4. Keep antennas away from motor, ESC or other possible interference sources.
5. Sponge or foam material is advised to use to prevent vibration when installing receiver.
6. Receiver contains some electronic components of high-precision. Be careful to avoid strong
vibration and high temperature.
7. Special vibration-proof material for R/C like foam or rubber cloth is used to pack to protect
receiver. Keeping the receiver in a well sealed plastic bag can avoid humidity and dust, which
would possibly make the receiver out of control.
When all the above steps are complete, please turn off the transmitter and re-power on to test if
the receiver is correctly connected with it.
R6FG Working Mode
R6FG has two working modes：normal working mode and gyro working mode.
(1) Normal Working Mode
Green LED, gyro will NOT be working.
(2) Gyro Function Working Mode
Both GREEN and RED LED on.

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The gyro function of receiver R6FG for professional car drifting can be enabled and disabled.
When it’s enabled, the turning stability can be maximized during competition. When there is false
position, gyro function keeps the car straight forward and turn precisely.
R6FG Gyro Setup
A. Gyro Enabled
Factory setting is gyro function OFF by default.
Short press ID SET three times with interval less than 1 second, the RED indicator flashes three
times. Red LED on/off indicates the gyro function is on/off.
B. Gyro Phase
When the gyro forward is enabled, try to turn the model car to see if the gyro is correcting the
wheels. Normally, the wheels should turn right to correct when the car is turned left while the
wheels should turn left to correct when the car is turned right. If the gyro phase is reversed, short
press the binding button (ID SET) twice in 1 second. The Red indicator flashes twice means the
gyro phase setting is complete.
C. Gyro Sensitivity Adjustment
Gyro sensitivity setting is CH3 by default (factory setting) and can be adjusted by the VR rotary
switch. Percentage is displayed when sensitivity is adjusted while the bigger percentage means
higher sensitivity. If the VR rotary switch/CH3 is set with other function, MODE can be changed
to STD in GYRO setting of the menu to adjust gyro sensitivity with buttons Dec(-) and Inc(-).
RC4GS Mix Control Setup
RC4GS V2 can be used to control dual-engine models like tracked vehicle has two motors and
each track is driven by each motor.
Before setting the mix controls, check if the phases working correctly by pulling trigger and
turning the wheel to test throttle and rudder.
Throttle Reverse
：
NOR/REV
Normally, pull the throttle, the right track should be moving forward while
push the throttle and the right track should be backward.
If pulling the throttle and the left track moves backward;
Or pushing the throttle and the left track moves forward, meaning
the initial throttle is reversed and needs to be set. Enter REVERSE
in the menu to modify.
Steering Reverse ： NOR/REV
Normally, if turn the steering wheel right/clockwise, the left track should
be moving forward while
turn the wheel left/anticlockwise and the left track should be backward.If
turning the steering wheel right and the right track moves backward; Or turning the wheel left and
the right track moves forward, meaning the initial steering is reversed and needs to be set. Enter
REVERSE in the menu to modify.
After setting the throttle/ steering reverse, then mix control can be set.
1. Throttle mix steering
：
tracked vehicles moving forward/backward
As tracked vehicles moving forward/backward is controlled by throttle, throttle leads steering in
the mix control. That is, Master-Throttle, Slave-Steering. Enter PMIX01 in the menu to modify.
* Percentage value varies the speed;
”+”means Master and Slave move to same direction at the same time
2. Steering mix Throttle ： tracked vehicles turning left/right
As tracked vehicles turning left/right is controlled by steering, steering leads throttle in the mix

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control. That is, Master-Steering, Slave-Throttle. Enter PMIX02 in the menu to modify.
* Percentage value varies the turning angle;
”-”means Master and Slave move to different directions at the same time
*For more detailed information on function setting please refer to the product user manual on
www.radiolink.com .
Size: 213 *117 * 115.5mm(6.39”*3.51”*3.46”)
Weight: 330g(11.6oz)
Channel: 4CH
Antenna Length: 106mm(4.17")
Control Range: 400m(437yd)
Operating Current: 80-120mA
Operating Voltage: 4.8-15V
(6pcs of AA battery or 2S-4S LiPo battery)
RF Power: <20dbm
Frequency: 2.4Ghz ISM Band（2400.0MHz--2483.5MHz）
Modulation Mode: GFSK
Channel resolution: 4096, the regular jitter is 0.5us
Spread Spectrum: FHSS
67 Channels Pseudo Random Frequency Sequence Hopping
LCD Screen: 128*64 Resolution, LCD Back Light
Low Voltage Alarm: Yes (can be customized on 2S-4S battery)
Adaptable Models: Fishing boats, Robots,Vehicles(Crawlers/Tanks/Truck)
Compatible Receiver: R6FG, R6F, R8EF, R8F, R7FG, R4FGM,R4F
Battery Tray Dimension: 89*59*18mm (3.5”*2.32”*0.71)
Model Memory: 10
For more after-sales service:
Please start from www.radiolink.com to download the electronic detailed manual.
Or send mail to: [e-mail] /[e-mail]
Thank you again for choosing our product.
Size: 35*20*13mm (1.05"*0.6"*0.39")
Weight: 6g(0.21oz)
Channel: 6CH
Antenna Length: 172mm(6.77")
Operating Current: 30mA
Operating Voltage: 4.8-10V
RC4GS V2 Specification R6FG Specification