ETRONIX PULSE EX4G 4CH 2.4GHZ FHSS WHEEL RADIO SYSTEM ET1123

Overview

The Etronix Pulse EX4G 4CH 2.4GHz FHSS Wheel Radio System represents one of the most straightforward and accessible entry points into the world of RC surface vehicles. Whether you're piloting an RC car or RC boat for the first time, or you're a seasoned hobbyist looking for a dependable, budget-friendly control system, the EX4G delivers the technology and functionality you need. This 4-channel radio system harnesses the latest in 2.4GHz spread spectrum technology, ensuring that your transmitter's frequency remains completely secure from external interference—a critical advantage when operating multiple RC models in the same area or at RC clubs across the UK.

Designed with simplicity and accessibility in mind, the Etronix Pulse EX4G is perfectly suited to RC car and boat applications with an impressive surface range of 400–500 metres. This makes it ideal for everything from casual garden bashing to more structured RC racing events. The system comes supplied complete with a receiver, meaning you have everything needed to get your RC vehicle under control right out of the box. The straightforward control layout and intuitive button placement make it an excellent choice for newcomers to the hobby, whilst the sophisticated adjustment features ensure that experienced RC enthusiasts can fine-tune their setup as their skills and ambitions evolve.

At just £34.99, the EX4G offers exceptional value for money, providing professional-grade radio technology at an affordable price point. Unlike some radio systems that require replacement crystals for different frequencies, this crystal-free 2.4GHz system eliminates that additional expense and complexity. The receiver uses the BATT port for the fourth channel, a clever design that maximises functionality without requiring a dedicated servo channel, making this system remarkably flexible for a wide variety of surface applications.

Key Features

• 2.4GHz Spread Spectrum FHSS Technology — This advanced frequency-hopping spread spectrum modulation ensures that your RC vehicle maintains a stable, interference-free connection with the transmitter, even in environments with multiple radio sources. FHSS technology is the same technology used in professional RC racing, giving you competition-grade reliability at an entry-level price.
• Crystal-Free Operation — There is no need to purchase and replace frequency crystals, which saves money and eliminates the hassle of swapping components. The system automatically handles frequency selection, making it genuinely ready to use straight from the purchase.
• 4-Channel Control System — Full four-channel control is provided for sophisticated vehicle operation, with the fourth channel accessed via the receiver's BATT port, allowing control of additional accessories or auxiliary functions on your RC model.
• Easy-to-Use Control Interface Suited to Basic Models — The wheel controller layout and straightforward button arrangement make this system perfect for newcomers to the RC hobby, with intuitive controls that require minimal learning curve before you're enjoying your first drive session.
• Digital Steering and Throttle Trim Adjustment — Fine-tune your steering and throttle response with digital trim controls accessible directly from the transmitter, allowing you to compensate for minor setup variations or personal driving preferences without opening your RC vehicle.
• FHSS Modulation — Frequency-hopping spread spectrum modulation constantly varies your transmission frequency, making it virtually impossible for external sources to interfere with your signal, even at busy RC tracks or events.
• Servo Reversing — Reverse the direction of any connected servo with the flick of a switch, eliminating the need for mechanical servo reversal or return trips to the workshop to change servo orientation.
• Steering Dual Rates — Switch between two different steering sensitivity levels using the transmitter control, allowing you to run gentle steering curves for high-speed driving or sharp, responsive steering for precision manoeuvres and tricky courses.
• Throttle EPA (End Point Adjustment) — Precisely calibrate the upper and lower throttle limits without needing to adjust your receiver settings, allowing you to optimise acceleration response and prevent over-travel that could damage your motor or ESC.
• Fail-Safe Function — If signal loss occurs, the fail-safe function automatically cuts throttle to prevent your RC vehicle from running away uncontrolled, providing essential safety during outdoor operation at RC tracks and open spaces.
• Charging Jack Port — A dedicated charging port on the transmitter allows rapid battery charging without removing the battery box, keeping you on the track longer and reducing downtime between sessions.
• Plug-In Battery Box for 4 AA Batteries — The modular battery box design accepts four standard AA cells, making replacement batteries instantly available from any shop, eliminating the need for proprietary battery packs or specialist charging equipment.
• Exceptional Surface Range of 400–500 Metres — Operating range significantly exceeds the 200-metre application specification, providing a comfortable safety margin and allowing you to operate at larger RC tracks, fields and water bodies without signal loss concerns.

Technical Performance

The Etronix Pulse EX4G represents a significant step forward in affordable RC radio technology, combining proven 2.4GHz spread spectrum engineering with user-friendly controls that appeal equally to beginners discovering their first RC car or boat and to experienced enthusiasts maintaining a backup system. The 4-channel architecture provides complete control over steering, throttle and two additional functions, with the innovative use of the receiver BATT port for the fourth channel demonstrating smart engineering that maximises capability without unnecessary complexity. The digital trim system allows fine-grained adjustment of steering and throttle response, whilst dual-rate steering capability lets you switch between sensitive and forgiving steering curves depending on driving conditions and personal preference. The throttle EPA function provides precise control over acceleration limits, preventing over-extension of servo movement that could otherwise damage motor bearings or transmission components. The fail-safe system protects against signal loss by cutting throttle automatically, an essential safety feature for outdoor operation where signal can be temporarily interrupted by obstacles or terrain features. Build quality is robust throughout, with the plug-in AA battery box providing a reliable, cost-effective power solution that eliminates dependency on proprietary batteries. The transmitter features a charging port for convenient in-field battery top-ups, and the wheel controller design sits naturally in your hands whether you're operating at your local RC club or piloting at dedicated RC racing circuits across the UK.

What's in the Box

• Etronix Pulse EX4G 4-Channel Transmitter
• Matching Receiver Module
• Plug-In Battery Box (requires 4 x AA batteries)

What You Need to Complete

• 4 x AA Batteries (not included) — Required to power the transmitter
• RC Vehicle with Servo Connectors — Your RC car, truck or boat must have standard servo connections compatible with the receiver

Frequently Asked Questions

• Is the Etronix Pulse EX4G suitable for complete beginners to RC cars and boats? — Absolutely. The system is specifically designed with beginners in mind, featuring intuitive wheel-style controls, straightforward button layout and easy-to-understand adjustment functions. The digital trim system and servo reversing options eliminate the need for mechanical adjustments, making it ideal for someone picking up their first RC car or boat. As your skills develop, the dual-rate steering and throttle EPA features provide the adjustment depth needed to optimise your setup for more advanced driving techniques.
• What batteries does this radio system need and how long will they last? — The Etronix Pulse EX4G requires four standard AA batteries, which you'll need to purchase separately. AA batteries are available from any supermarket or retail outlet across the UK, making replacement incredibly convenient. Runtime will depend on the specific AA battery type you select—alkaline batteries offer reasonable endurance for casual driving sessions, whilst rechargeable NiMH AA batteries provide better value over time if you're a frequent user. The transmitter features a charging port for topping up between sessions.
• What is the maximum range of this radio system and is it suitable for large RC tracks? — The Etronix Pulse EX4G provides an exceptional surface range of 400–500 metres, which far exceeds the 200-metre application specification. This generous safety margin means the system is perfectly suited to large RC tracks, open fields and water bodies across the UK. The spread spectrum technology ensures stable performance even in areas with other radio sources, making it reliable for RC clubs and competitive events.
• Can I use this radio system with different RC vehicles? — Yes, the EX4G can be paired with any RC car, truck or boat equipped with standard servo connectors. The four-channel design supports steering, throttle and two additional functions, making it versatile for everything from simple 2-function vehicles to more complex models. The servo reversing function allows you to adjust servo direction for different vehicle orientations without opening your RC model.
• Is the receiver waterproof and suitable for RC boats? — The system is designed for surface applications including both RC cars and RC boats. Whilst specific waterproof ratings are not detailed in the specifications, the modular design and standard servo connectors make it compatible with waterproofed boat receivers and water-resistant RC vehicles designed for aquatic use.
• What makes FHSS 2.4GHz technology better than older crystal-based systems? — FHSS (Frequency Hopping Spread Spectrum) constantly varies the transmission frequency, making interference virtually impossible. Unlike older crystal-based systems where you needed to purchase and install different crystals for different frequencies, the EX4G's crystal-free design handles everything automatically. This means no additional expense, no component swapping, and no risk of accidentally running on the wrong frequency at an RC club or track.
• Can the fourth channel be used for something other than battery monitoring? — Yes, whilst the fourth channel accesses the receiver's BATT port, this can be repurposed for controlling auxiliary functions on your RC vehicle such as lights, winches, weapon systems on battle vehicles or other accessories, depending on your specific model and what the receiver supports.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ETRONIX PULSE EX4G 4CH 2.4GHZ FHSS WHEEL RADIO SYSTEM ET1123 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.