Overview
The Spektrum SPM9747 DSMX SRXL2 Remote Receiver is a sophisticated piece of RC equipment designed to enhance your aerial RC experience with advanced wireless technology. This remote receiver is engineered to provide additional path diversity using Spektrum's patented MultiLink technology, which works to avoid reflected signal fading and polarisation blind spots that can occur at long range from your transmitter. Whether you're flying RC aircraft in the UK or taking part in competitive RC flying, this receiver represents a significant upgrade in reliability and performance for your radio system setup.
The SPM9747 is built for RC pilots who demand the highest standards of signal stability and telemetry responsiveness. It's compatible with all receivers that utilise SRXL2 remote receivers featuring a 4-pin connector, making it a versatile addition to compatible RC systems. The integrated antenna design eliminates the fragility of traditional wire antennas, meaning you can install this receiver with confidence and focus on your flying rather than worrying about antenna damage. This is particularly valuable for RC enthusiasts who operate their models in challenging environments or who prioritise reliability above all else.
Spektrum is a recognised leader in RC radio systems and receivers, trusted by RC pilots across the UK and worldwide. The SRXL2 technology represents the cutting edge in bi-directional communications between your transmitter and onboard devices. If you're serious about your RC aircraft and want a remote receiver that combines ease of installation with advanced performance features, the SPM9747 DSMX SRXL2 Remote Receiver is an excellent choice.
Key Features
- SRXL2 Technology — This powerful bi-directional communications protocol improves the speed, security, and richness of data transfer between your radio system and compatible onboard devices such as flight controllers and Smart ESCs. This means faster response times to your control inputs and more reliable communication at extended ranges, which is crucial when flying RC aircraft at distance.
- Integrated Antenna Design — Rather than using fragile external wire antennas that can be damaged during transport or operation, the SPM9747 features an integrated antenna design housed within the receiver case itself. This allows for quick and easy installation whilst eliminating concern for damaging wire antennas, making setup straightforward even for those new to remote receivers.
- DSMX and DSM2 Compatible — The receiver works with both DSMX and DSM2 protocol systems, providing flexibility if you have multiple transmitters or plan to upgrade your system in the future. This dual compatibility ensures your investment in this receiver is future-proof.
- Lightweight Design — Weighing just 0.1 ounces (3 grams), this remote receiver adds minimal weight to your RC aircraft, which is essential for maintaining optimal flight characteristics and battery efficiency. Every gram matters in aerial RC, and this receiver respects that principle.
- 22ms and 11ms Compatible — The receiver supports both standard and high-speed frame rates, allowing you to match the performance characteristics of your transmitter and flight controller. This flexibility ensures you get the responsiveness you need for your specific flying style.
- 12 Inch Extension Cable Included — The receiver comes with a 12-inch extension cable as standard, giving you flexibility in where you mount the remote receiver within your aircraft. Longer or shorter cables are available separately if you need different mounting configurations.
- Responsive Telemetry — SRXL2 technology enables telemetry that can be customised precisely to your needs, giving you real-time feedback from your RC aircraft during flight. This information is invaluable for monitoring system health and flight performance.
Technical Performance
The SPM9747 DSMX SRXL2 Remote Receiver represents excellent engineering focused on reliability and performance in the 2.4GHz frequency band. Operating on an input voltage range of 3.3 to 8.4 volts, this receiver offers flexibility in power supply options whilst maintaining stable operation. The device features a 4-pin SRXL2 connector configuration and operates with full range performance, meaning you get consistent signal reception across the full operational distance of your transmitter. With integrated telemetry capabilities and a bind button for easy pairing with compatible transmitters, the receiver is designed for straightforward setup and operation. The integrated antenna design ensures consistent signal reception without the complications of external antenna placement. The receiver's compact dimensions—measuring just 1 inch in length, 0.71 inches in width, and 0.30 inches in height—make it suitable for installation in space-constrained aircraft. Spektrum's reputation for quality manufacturing is evident in this product, which has earned a 4 out of 5 customer rating, reflecting real-world satisfaction from RC pilots across the UK and beyond who rely on this receiver for their flying.
What's in the Box
- SPM9747 DSMX SRXL2 Remote Receiver unit with integrated antenna
- 12-inch extension cable with 4-pin connector
Compatibility and Important Notes
The SPM9747 DSMX SRXL2 Remote Receiver is specifically designed for use with 4-pin SRXL2 connector systems and is not compatible with receivers that use 3-wire remote receivers. Your main receiver unit must be compatible with a 4-wire SRXL2 remote receiver for this product to work correctly. The SPM9747 is compatible with receivers that feature SRXL2 technology, such as the AR637T and AR6610T receivers. Before purchasing, please verify that your current receiver supports SRXL2 remote receiver connections. If you're uncertain about compatibility, our team at RC Model Shop can provide technical guidance to ensure you choose the right equipment for your RC setup.
Frequently Asked Questions
- Is the SPM9747 DSMX SRXL2 Remote Receiver compatible with my existing Spektrum equipment? — The SPM9747 is compatible with all receivers that utilise SRXL2 remote receivers with a 4-pin connector. It supports both DSMX and DSM2 protocols, so if you have compatible Spektrum equipment, this receiver will work with your system. However, your main receiver must support 4-wire SRXL2 connections; it will not work with older 3-wire remote receiver systems. We recommend checking your receiver's specifications or contacting us for compatibility confirmation.
- What voltage does the SPM9747 remote receiver require? — The receiver operates on an input voltage range of 3.3 to 8.4 volts, giving you flexibility in how you power the device. This voltage range is compatible with various battery configurations commonly used in RC aircraft systems.
- Will the integrated antenna affect signal strength compared to external wire antennas? — Spektrum's integrated antenna design is engineered to provide equivalent performance to traditional wire antennas whilst offering superior durability and ease of installation. The antenna is optimised for the 2.4GHz frequency band and provides full range performance. The benefit of the integrated design is that you eliminate the risk of antenna damage during installation, transport, or operation, which actually improves overall reliability.
- Can I use different length extension cables with the SPM9747? — Yes. The receiver comes with a 12-inch extension cable, but Spektrum manufactures cables in other lengths. If you need a shorter or longer cable to suit your aircraft's layout, longer and shorter cables are available for purchase separately.
- Is the SPM9747 suitable for beginners to RC flying? — Whilst the SPM9747 is an advanced piece of equipment designed for serious RC pilots, beginners who are upgrading their systems or building more sophisticated RC aircraft can certainly use it. The receiver is straightforward to install thanks to its integrated antenna and 4-pin connector design. However, this is a remote receiver component rather than a complete radio system; you'll need a compatible Spektrum transmitter and main receiver unit. If you're completely new to RC flying, we recommend speaking with our team about starter packages and complete system setups.
- What is SRXL2 and why does it matter? — SRXL2 is Spektrum's powerful bi-directional communications protocol that improves the speed, security, and richness of data transfer between your radio system and compatible onboard devices like flight controllers and Smart ESCs. In practical terms, this means faster response to your control inputs, more reliable communication at extended ranges, and the ability to receive detailed telemetry data from your aircraft. If you're flying at distance or need the most responsive control possible, SRXL2 technology offers significant advantages over standard protocols.
- How much does the SPM9747 weigh? — At just 0.1 ounces (3 grams), the SPM9747 is remarkably lightweight, adding minimal weight to your RC aircraft. This is important because weight directly affects flight performance, battery life, and the ability of your aircraft to achieve optimal flight characteristics.
- What makes the SPM9747 different from other Spektrum remote receivers? — The SPM9747 is specifically engineered with SRXL2 technology, integrated antenna design, and support for both 22ms and 11ms frame rates. The integrated antenna eliminates the durability concerns of wire antennas, whilst SRXL2 technology provides more responsive telemetry and faster data communication than older Spektrum receiver designs. If you're upgrading an existing RC system, the SPM9747 represents a significant step forward in performance and reliability.
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 SPM DSMX SRXL2 Remote Receiver P-SPM9747 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.
