FUTABA T4GRS 2.4GHZ T-FHSS RADIO SYSTEM WITH R304SB

Get the Stick - 4GRS
Fully equipped, high-performance 4-channel RC car transmitter with integrated telemetry using 2.4 GHz T-FHSS technology.
The 4GRS control sticks provide an exceptionally precise and direct feel. Experience high-speed control with ultra-fast digital servo response of just 2.9 ms.
Combined with an extensive range of functions and renowned Futaba quality, this makes the 4GRS the perfect transmitter for demanding RC car and racing boat drivers who prefer sticks to a pistol grip. Futaba FHSS frequency-hopping technology ensures highly reliable transmission.
The transmitter housing is ergonomically balanced and features conveniently positioned controls.
A large, centrally positioned backlit 128 x 64 dot graphic display is easy to read in all lighting conditions. The graphical interface with Futaba's easy-to-understand menu structure enables quick operation.
Navigation uses an intuitive four-way rocker button together with two additional buttons. Side-mounted rotary controls and switches let you operate auxiliary functions even during a race.

Highlights

• 4-channel T-FHSS® telemetry system
• Real-time readings on a large display
• Alarm tone configuration and output
• Automatic, timer-controlled telemetry data recording
• 65 x 32.5 mm backlit display (128 x 64 dots)
• Standard servo outputs and S.BUS technology for fully digital integration of S.BUS servos, speed controllers and sensors
• Fully equipped 4-channel transmitter with 9 largely assignable controls. Ultra-fast digital servo response of just 2.9 ms.

Transmission

• 4 control channels with 3 selectable modulation modes
• FHSS, 4 control channels without telemetry
• S-FHSS, 4 control channels without telemetry
• T-FHSS® with 4 control channels and 4 telemetry channels
• High resistance to interference through 2.4 GHz frequency-hopping modulation
• Transmission power up to 100 mW
• Real-Time Response – real-time control
• The FHSS system's response time, from moving the control stick to servo movement, is significantly faster than other 2.4 GHz systems
• Long range
• Ultra-fast, direct, fully digital modulation for the shortest response times
• Selectable T-FHSS high-speed mode for ultra-fast digital servo control at 2.9 ms (14 ms in normal mode)
• Easy Link: exceptionally simple, fast binding between transmitter and receiver
• Extremely fast, reliable automatic re-binding even in difficult conditions
• Intelligent servo timing for consistent control and prevention of differences in servo response time
• No loss of response speed even in a heavily occupied frequency band

Note:

Future-proof in accordance with EU standard EN 300 328 V1.8.1.
The current Futaba FASSTest and T-FHSS telemetry transmission systems already comply with the new EU standard EN 300 328 V1.8.1. These advanced transmission systems do not require adjustment to meet the new EU standard. FASSTest and T-FHSS are 100% future-proof.
The FASST and FHSS transmission systems in transmitters sold from 1 January 2015 are adapted to the new EU standard through software. These changes maintain compatibility with all existing Futaba FASST and FHSS components. All transmitters purchased before 1 January 2015 may continue to be used. FASST and FHSS users therefore retain compatibility across all components.

Telemetry

• Synchronised, bidirectional communication between transmitter and receiver with a high telemetry data rate (up to 9 times per second)
• 4 telemetry channels
• Alarm tone configuration and output
• Automatic, timer-controlled telemetry data recording
• Real-time telemetry data on the integrated display
• Receiver signal strength display for monitoring range
• Receiver low-voltage warning system for monitoring the receiver battery
• Connection of sensors to the S.BUS2 input for:
• - Drive battery voltage (0–70 V DC)
• - RPM (optical, magnetic or brushless sensor)
• - Temperature (125°C or 200°C)

S.BUS technology

• R304SB receiver with four standard servo outputs and an S.BUS connection for fully digital integration of S.BUS components such as servos, speed controllers and sensors
• All S.BUS servos can also be connected to the receiver's standard servo outputs
• Digital bus technology for RC modelling
• Forward-looking serial control bus
• Compatible with S.BUS1 and S.BUS2 (bidirectional)
• Allows ideal positioning of all components with efficient wiring
• Future-proof digital technology for upcoming Futaba components
• Serial digital signal ideal for S.BUS servos, speed controllers and sensors

Functions – general

• 40 integrated model memories
• Wide receiver voltage range from 3.6 V to 8.4 V for flexible receiver battery selection
• Wide transmitter voltage range for dry-cell, NiMH and LiPo batteries
• Future-proof through software updates using the CIU2 adapter
• Proven mixer menus for programming almost all vehicle types (off-road, on-road 1:12 to 1:6, crawlers, etc.) and racing boats
• Servo travel adjustment for channels 1–4
• Servo reversing and centre adjustment for channels 1–4
• Trim values shown on the display
• Failsafe settings for channels 1–4, battery failsafe for the throttle function
• Count-up or countdown stopwatch with lap timer and fuel timer

Further technical specifications:

• Transmission system / frequency band:
• FHSS, 2.404–2.4625 GHz, 1.5 MHz spacing
• S-FHSS, 2.404–2.4625 GHz, 1.5 MHz spacing
• T-FHSS®, 2.407–2.4675 GHz, 2.0 MHz spacing
• Approx. weight: 550 g
• Current consumption: approx. 150 mA
• Transmission power: max. 100 mW
• Not compatible with FASST receivers.
• Only suitable for FHSS receivers R603GF, R2004GF, R2104GF, R2006GS, R2008SB and R304SB.
• Functions: 8/4 servos
• Power supply: 4 dry-cell batteries or 5 NiMH cells