RadioLink RC4GS V3 Instruction Manual

SAFETY PRECAUTIONS

• 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.

WARNING

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.

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.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

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 this device must accept any interference received, including interference that may cause undesired operation.
2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Packing list

(Please refer to the sales interface for the actual packing list)

Contents

1. RC4GS V3 Remote Control System
   • 1.1 Transmitter RC4GS V3
     • 1.1.1 Transmitter Overview
     • 1.1.2 Switch/Button Introduction
     • 1.1.3 Specifications
     • 1.1.4 Basic Operations
   • 1.2 Receiver R6FG(Standard Pack)
     • 1.2.1 R6FG Overview
     • 1.2.2 Specifications
     • 1.2.3 Binding
     • 1.2.4 Precautions for Receiver Usage
     • 1.2.5 Working Modes
     • 1.2.6 Gyro Setup
     • 1.2.7 Telemetry of Model Battery Voltage
     • 1.2.8 RSSI Testing
2. RC4GS V3 Functions
   • 2.1 Servo Value
   • 2.2 Language "LANGUAGE"(语言选择)
   • 2.3 Model Select "MODEL"
   • 2.4 End Point Adjust "EPA"
   • 2.5 Steering Exponential "STEXP"
   • 2.6 Steering Servo Speed Delay "STSPD"
   • 2.7 Throttle Exponential "THEXP"
   • 2.8 Throttle Speed Delay "THSPD"
   • 2.9 A.B.S. Function "A.B.S"
   • 2.10 Throttle Acceleration "ACCEL"
   • 2.11 Idle-up "IDLUP"
     • 2.11.1 Idle-up at Engine Start
     • 2.11.2 Cruise Control "TH-LOCK"
   • 2.12 Sub-trim "SUBTRIM"
   • 2.13 Channel Reverse "REVERSE"
   • 2.14 Steering/Throttle Dual Rate "D/R"
   • 2.15 Brake Side Adjustment "ATL"
   • 2.16 Programmable Mixes "PMIX01/02"
     • 2.16.1 Mix Control Setup
   • 2.17 Auxiliary Channel "AUX-CH"
   • 2.18 Model Name "NAME"
   • 2.19 ALARM(Safety Alarm for Low Voltage and Signal Strength)
   • 2.20 Gyro Sensitivity “GYRO”
   • 2.21 Fail Safe"F/S"
   • 2.22 ID SEED
   • 2.23 Timer Setting “TIMER”
   • 2.24 Factory Reset “RESET”
3. III. Tutorials
   • 3.1 Firmware Update of RC4GS V3
   • 3.2 Throttle and Steering Calibration
   • 3.3 Connect RC4GS V3 to Simulator
   • 3.4 THSPD Throttle Delay Function on RC4GS V3
   • 3.5 TIMER Function on RC4GS V3
   • 3.6 Dual Rate Function on RC4GS V3
   • 3.7 EPA Function on RC4GS V3
   • 3.8 Set Different ALARM for 30 Different Models on RC4GS V3
   • 3.9 ID Seed Function on RC4GS V3
   • 3.10 Cruise Control Function on RC4GS V3
   • 3.11 Connect RC4GS V3 to TBS Crossfire
   • 3.12 LK-A/LK-D Button Setup on RC4GS V3

I. RC4GS V3 Remote Control System

1.1 Transmitter RC4GS V3

1.1.1 Transmitter Overview

A diagram shows the RadioLink RC4GS V3 transmitter with the following labeled parts: Antenna, Throttle Trim Lever, Channel 3 Trim Lever, Steering Wheel, Steering Trim Lever, LCD Screen, Menu Setup Buttons, SWA (Customizable), SWD (Customizable), Lanyard Hook, VR (Customizable), FPV Device Holder Hole, DSC (Simulator/Crossfire Port), Power Switch, USB Port (Firmware Update), Throttle Trigger.

1.1.2 Switch/Button Introduction

Note:

1. CH in the transmitter stands for Channel.
2. Momentary switch: The servo value will reach the maximum (or the minimum) when pressing the button, and back to the original value when loosen.
3. Two-way switch: The servo value will reach the maximum (or the minimum) when pressing the button once, and back to the original value when pressing the button again.

1.1.3 Specifications

1.1.4 Basic Operations

A step-by-step guide with diagrams illustrates how to operate the RC4GS V3:

1. Power on RC4GS V3 with batteries.
2. Switch on RC4GS V3.
3. Press Exit and Enter buttons simultaneously to enter the setup menu.
4. Use Dec(-) or Inc(+) buttons to adjust parameters, then press Enter to select.
5. Press Exit to go back or switch to "Servo value" and "Telemetry" interface.

Display on LCD Screen: Shows Model Name, Transmitter Voltage, ID Seed Number, Transmitter Name, Steering Trim, and Throttle Trim.

1.2 Receiver R6FG(Standard Pack)

1.2.1 R6FG Overview

The R6FG is a 2.4GHz 6-channel receiver with integrated gyro and high voltage servo support, packed with the RC4GS V3.

A diagram shows the R6FG receiver connections: Signal, VCC, GND, and channels 1-6. It also indicates the LED Indicator and Binding Button.

1.2.2 Specifications

1.2.3 Binding

The RC4GS V3 and R6FG are bound by default. If you purchase a new R6FG receiver, follow these steps to bind it:

1. Place the transmitter and receiver close (approx. 50 cm) and power them on.
2. Switch on the transmitter; the LED on R6FG will flash slowly.
3. Press the black binding button (ID SET) on the receiver for over 1 second. The LED will flash quickly, indicating binding is in progress.
4. When the LED stops flashing and remains on, binding is complete. A signal tower will appear on the transmitter's LCD. If binding fails, the LED will continue to flash slowly; repeat the steps.

Note: The signal telemetry from the receiver is about 80m (262.5ft). The control range of RC4GS V3 is up to 400m (1312ft).

1.2.4 Precautions for Receiver Usage

1. Test RSSI (Received Signal Strength Indicator) before operating models. Refer to Chapter 1.2.8 for testing methods.
2. If the receiver antenna is damaged, replace it with a new one promptly.
3. Keep antennas as straight as possible for effective control range.
4. For large models with metal parts, position antennas on both sides to ensure optimal signal.
5. Keep antennas at least half an inch away from metal conductors and carbon fiber, avoiding sharp bends.
6. Keep antennas away from motors, ESCs, and other potential interference sources.
7. Use sponge or foam material to prevent vibration when installing the receiver.
8. Handle the receiver carefully to avoid strong vibration and high temperatures, as it contains high-precision electronic components.
9. Use vibration-proof material like foam or rubber cloth for packing. A well-sealed plastic bag can protect the receiver from humidity and dust.

1.2.5 Working Modes

The R6FG has two working modes: normal and gyro. Short press the binding button (ID SET) three times within 1 second to switch modes.

• (1) Normal Working Mode: Green LED; gyro is inactive.
• (2) Gyro Function Working Mode: Both Green and Red LEDs are on.

1.2.6 Gyro Setup

The gyro function of the R6FG receiver can be enabled or disabled for enhanced turning stability. The factory setting is gyro function OFF.

A. Gyro Enabled: Short press the binding button (ID SET) three times within 1 second. The RED indicator flashes three times to indicate the gyro function is ON/OFF.

Attention:

1. Servo shaking when connected to the receiver is normal if the gyro function is on, as it automatically corrects the steering gear angle. Turn off the gyro if not needed.
2. Strong servo shaking indicates excessive gyro sensitivity. Use the DL1 switch to reduce sensitivity.
3. If the gyro mode is ON (LED indicator ON) but the gyro does not work, check the GYRO menu (menu 20) on the transmitter to ensure the RATE is not close to 0%. Increase the RATE if necessary.

B. Gyro Phase: To check if the gyro is correcting the wheels, turn the model car. The wheels should turn right to correct a left turn and left to correct a right turn. If the gyro phase is reversed, short press the binding button (ID SET) twice within 1 second. The RED indicator flashes twice to switch the gyro phase.

C. Gyro Sensitivity Adjustment: Gyro sensitivity can be adjusted in the transmitter's BASIC MENU-- GYRO. You can choose between STD and VR modes. Gyro sensitivity is set to CH3 by default. If CH3 is used for other functions, select STD mode and adjust sensitivity using the Dec(-) or Inc(+) buttons. The percentage indicates sensitivity, with higher percentages meaning higher sensitivity.

1.2.7 Telemetry of Model Battery Voltage

Model battery voltage can be displayed in real-time when using R8FG, R7FG, or R8F receivers with the RC4GS V3. The standard R6FG receiver does not support this feature. The setting is available in the "19. ALARM" menu. For a 3S lithium battery, set the warning value to 11.1V (3.7V*3). A diagram shows the connection for telemetry with an R7FG receiver.

Note:

1. The TELEMETRY port is for 2S-8S (7.4V-33.6V) battery voltage telemetry only and cannot power the receiver.
2. Ensure correct battery polarity to avoid abnormal voltage display.

1.2.8 RSSI Testing

RSSI stands for Received Signal Strength Indicator.

RSSI test method:

1. After successful binding, the signal tower appears on the screen (Picture 1).
2. Press the Exit button twice to enter the return information interface. RSSI is displayed at the top (Picture 2).
3. Align the receiver antenna and transmitter antenna parallel, keeping a distance of about 20 cm (as shown in the diagram) to observe the RSSI value. An RSSI value between 0 and -30dBm is normal. A value closer to 0 indicates a stronger signal. If the RSSI is outside this range, there may be a signal transmission problem.

Abnormal Signal Strength Solution:

1. Check for damage to the receiver or transmitter antenna. Replace if damaged.
2. If antennas are intact, test for malfunctions by replacing the receiver.

II. RC4GS V3 Functions

2.1 Servo Value

After powering on the RC4GS V3, press the "Exit" button on the main interface to view the servo value (See Picture 1).

2.2 Language "LANGUAGE"(语言选择)

Both English and Chinese menus are available (See Picture 2).

2.3 Model Select "MODEL"

The RC4GS V3 can store settings for 30 models. This function allows you to select a new model, and each model can have its parameters set independently (See Picture 3).

2.4 End Point Adjust "EPA"

Use EPA to adjust steering angles and throttle high side/brake side operation amounts. It corrects differences in turning radius due to vehicle characteristics.

• Setting item (channel and value range): CH1 to CH5: 0%~120%. Initial value: 100%.
• Switch setting: Assign a switch or button to switch between different end points (SWA, SWD, LK-A, LK-D). "NULL" means no switch assigned. UP/DOWN indicates the switch position.

A diagram shows the EPA settings for ST, TH, CH3, CH4, CH5.

2.5 Steering Exponential "STEXP"

This function adjusts the sensitivity of the steering servo around the neutral and end points without affecting the maximum servo travel.

• RATE: Steering EXP rate.
• Adjustment range: -100%~0%~+100%. Initial value: 0%.

Descriptions explain the effect of different RATE values on sensitivity.

2.6 Steering Servo Speed Delay "STSPD"

This function is effective for quick steering operations that may cause momentary under-steering, loss of speed, or spinning.

• Setup item: TURN (turn direction), RETURN (return direction).
• Adjustment range: 0%~100% (each direction). At 100%, there is no delay.

A diagram shows the STSPD settings for TURN and RETURN.

2.7 Throttle Exponential "THEXP"

This function adjusts the throttle servo operation for high side and brake side, making it quicker or milder without affecting the maximum servo operation amount. It offers curve adjustments (CRV, VTR, EXP, BRK-EXP).

Diagrams illustrate the settings for different curve types.

2.8 Throttle Speed Delay "THSPD"

This function delays throttle servo operation to prevent wheel spin on slippery surfaces, improving smooth operation and reducing battery consumption. It can be set to SPEED1 or SPEED2, or turned OFF.

Diagrams show the adjustment methods for SPEED1 and SPEED2.

2.9 A.B.S. Function "A.B.S"

The A.B.S. function helps eliminate under-steer during cornering, especially in 4-wheel drive vehicles, by pulsing the brakes.

• Operation: The throttle servo pulses intermittently when brakes are applied, mimicking brake pumping. Adjustments can be made for brake return amount, pulse cycle, and brake duty. The effective region can be set according to steering operation (Mixing function).
• ABP (Amount of brake return): Sets the servo return rate after brake release. Range: 0~50~100.
• DLY (Delay): Sets the delay from brake operation to ABS operation. Range: 0~100.
• CYC (Cycle): Adjusts the pulse cycle speed. Range: 0~30.
• TGP (Trigger point): Sets the trigger point for ABS operation. Range: 0~100.
• DTY (Cycle duty ratio): Sets the proportion of brake application and release time. Range: -3~0~+3.
• STM (Steering mixing): Sets the range for ABS operation relative to steering wheel operation. Options include OFF, N10~N100, E10~E100.

Diagrams illustrate the A.B.S. settings and steering operation.

2.10 Throttle Acceleration "ACCEL"

This function adjusts the throttle movement characteristic from the neutral position. The servo jumps to the input position at maximum speed, unlike exponential which adjusts the entire throttle movement into a curve.

• FWRD: Forward side acceleration amount. Range: 0%~100%.
• BRAK: Brake side acceleration amount. Range: 0%~100%.

Diagrams show ACCEL settings for FWRD and BRAK.

2.11 Idle-up "IDLUP"

2.11.1 Idle-up at Engine Start

This function improves engine starting characteristics by raising the idling speed for gas-powered cars.

• Idle-Up rate (RATE): -50% ~ -1%, 0%, +1% ~ +50%. Initial value: 0%.

Diagram shows IDLUP settings.

2.11.2 Cruise Control "TH-LOCK"

This function allows locking the throttle at a specific value. It can be controlled by the SWA switch (or other two-way switches).

2.12 Sub-trim "SUBTRIM"

Adjusts the neutral position of the steering, throttle, and other channels.

• Sub-trim (channel and value range): CH1-CH5: -100~0~+100. Initial value: 0.

Diagram shows SUBTRIM settings.

2.13 Channel Reverse "REVERSE"

Reverses the direction of operation for servos related to steering, throttle, and channels 3, 4, and 5.

2.14 Steering/Throttle Dual Rate "D/R"

Reduces the servo travel amount for all channels. Unlike EPA, D/R affects both sides of the channel simultaneously. The range is 0-100, with a default of 100. A switch can be assigned to change travel amounts.

Diagram shows D/R settings.

2.15 Brake Side Adjustment "ATL"

Decreases the set value when braking is strong and increases it when braking is weak.

• RATE: Brake amount. Range: 0%~100%. Initial value: 100%.

Diagram shows ATL settings.

2.16 Programmable Mixes "PMIX01/02"

Allows mixing between steering, throttle, CH3, CH4, and CH5. PMIX01 and PMIX02 settings are the same.

Diagram shows PMIX settings.

2.16.1 Mix Control Setup

Details on setting up mix control for dual-engine models can be found at: https://www.radiolink.com/newsinfo/477940.html

2.17 Auxiliary Channel "AUX-CH"

The RC4GS V3 has three auxiliary channels (CH3, CH4, CH5) that can be customized with control switches (ST, TH, VR, SwA, SwD, LK-A, LK-D, NULL).

Diagram shows AUX-CH settings.

2.18 Model Name "NAME"

The RC4GS V3 stores model memories for 30 models. Each model can be named separately. The factory default name is MODEL1.

Diagram shows model naming.

2.19 ALARM (Safety Alarm for Low Voltage and Signal Strength)

Each model can have independent low voltage and RSSI value alarms set. RPM telemetry functions are under development.

Diagrams show ALARM settings for TX, RX, EX, and RSSI.

The transmitter default alarm voltage is 7.2V, and it can be customized for 2-4S batteries. The receiver default alarm voltage is 4.0V. Users can set the RSSI alarm value based on the farthest safe control distance (e.g., -85dBm for 400m range).

When voltage or RSSI signal strength drops below the set value, a text alert and "didi" sound will prompt the user.

Diagrams show low power and low RSSI alarms.

Note:

1. RC4GS V3 allows setting different low voltage alarm values for each model, but the transmitter low voltage alarm is the same for all models.
2. Set voltage values according to battery type (lithium, nickel metal hydride, nickel cadmium).
3. Model battery voltage telemetry and low voltage alarm are only valid with R8FG/R7FG/R8F receivers.

2.20 Gyro Sensitivity "GYRO"

This function allows setting gyro sensitivity and VR mixing ON or OFF. When MIX is OFF, the gyro is disabled. When MIX is ON, you can adjust gyro sensitivity using STD or VR mode. STD is adjusted on-screen, and VR uses CH3 by default. Sensitivity ranges from 0% to 100%. High sensitivity may cause vibration; adjust as needed.

Diagram shows GYRO settings.

2.21 Fail Safe"F/S"

Sets the output value for each channel when the receiver loses control. It can be set for servo, throttle, CH3, CH4, and CH5.

• RANGE: CH1 to CH5: -100~+100. Initial value: 0.

Diagram shows F/S settings.

2.22 ID SEED

This function allows selecting one receiver to control when multiple paired receivers are powered on simultaneously. Other receivers remain in standby.

• ID SEED function OFF: RC4GS V3 can control multiple devices at once.
• ID SEED function ON: RC4GS V3 selects one receiver for control, while others are on standby.

Setting method: Turn on MODE, set the corresponding ID SEED number for your vehicle, and complete binding. The ID SEED number will appear on the transmitter's main interface.

Diagram shows ID SEED settings.

2.23 Timer Setting "TIMER"

The TIMER function is used for game timing and daily training. You can choose UP TIMER or DOWN TIMER. An alarm can be set to notify when the timer reaches a set time.

• Mode: UP TIMER or DOWN TIMER.
• ALRM: Alarm time setting.
• START: Select a switch or button to trigger the timing function.
• STOP: Used to stop the timing function.
• RESET: Toggles to clear all timing values.

Diagrams show TIMER settings.

Note:

1. Do not place the switch in the stop or reset position when triggering the timing function.
2. To reset all timings, either set the "alarm" value or the "mode" value.
3. LAP: Sets the number of laps (1-30).
4. Display laps: Shows the current lap timing.

Display: CURRENT shows the ON/OFF status in the "Timer" menu. HOME PAGE shows the status in both the "Home Page" and "Timer" menus.

2.24 Factory Reset "RESET"

This function resets all data for a model memory to original factory defaults, useful for starting fresh.

Note: Resetting the current model memory will permanently erase all programming information for that model. Data cannot be recovered. Proceed with caution.

Diagram shows RESET settings.

III. Tutorials

Video tutorials for the RC4GS V3 are available on the RadioLink official YouTube channel. Search for "RadioLink_official" or specific function keywords.

Tutorials include:

• Firmware Update of RC4GS V3
• Throttle and Steering Calibration
• Connect RC4GS V3 to Simulator
• THSPD Throttle Delay Function on RC4GS V3
• TIMER Function on RC4GS V3
• Dual Rate Function on RC4GS V3
• EPA Function on RC4GS V3
• Set Different ALARM for 30 Different Models on RC4GS V3
• ID Seed Function on RC4GS V3
• Cruise Control Function on RC4GS V3
• Connect RC4GS V3 to TBS Crossfire
• LK-A/LK-D Button Setup on RC4GS V3

Technical Support:

Contact RadioLink RL via Facebook Messenger.

For further assistance, email: after_service@radioLink.com.cn

Download the latest version of the manual from: https://www.radiolink.com/rc4gsv3_manual

Thank you for choosing RadioLink product.