How does this compare to the spm4651t in terms of range and effectiveness? confused whether the integrated antenna helps or hurts functionality

I am not a fan of the antenna free receivers and I have not had any experience with this particular model. I did put it in a Habu 32X but swapped it out before I actually got to field test it. I added 2 additional remote receivers during the install for redundancy purposes because I didn't want to take any chances. So I guess the answer to your question is I don't know for sure but I will try it in a foamy before I put it in a high dollar aircraft.

Linking to another transmitter for training? purposes

I have not used the SPM9747 for that purpose (I've only used it as an extra receiver to improve RF diversity). I'm aware that this remote receiver can be installed in a lower-end transmitter like the Spektrum DXS. According to the DXS manual, this should allow you create an instructor - student setup with another Spektrum transmitter for training purposes.

Is this compatible with ds4s transmitter?

The DX4S transmitter is a Surface transmitter, and the SRXL2 Remote Receiver is for Air. So, no.

Is this a good choice to use with the Aura 8?

I use it with an Aura 8 but it requires an adapter cable that isn't included. It available from Flex Innovations...

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📡 Stay connected, stay ahead — the future of remote control is here!

DUAL COMPATIBILITY - Works flawlessly with both DSMX and DSM2 protocols, giving you ultimate flexibility across your devices.
FEATHERLIGHT DURABLE - At just 22.68g, this receiver adds minimal weight without compromising rugged performance—perfect for high-performance setups.
LIGHTNING FAST RESPONSE - Choose between 11ms and 22ms latency modes to match your precision needs and dominate every maneuver.
PLUG PLAY INSTALLATION - Integrated antenna design means no messy wiring—get up and running faster with a sleek, compact receiver.
NEXT LEVEL SIGNAL STABILITY - Spektrum’s patented MultiLink tech eliminates signal fading and blind spots, ensuring your control stays rock solid even at long range.

The Spektrum SRXL2 DSMX Remote Receiver (SPM9747) leverages advanced SRXL2 technology and patented MultiLink signal diversity to deliver ultra-reliable, low-latency control. Featuring an integrated antenna for easy installation, compatibility with DSMX/DSM2 protocols, and a lightweight design, it’s engineered for professional-grade remote control performance and long-range precision.

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Product Dimensions	20.32 x 10.16 x 1.27 cm; 22.68 g
Manufacturer recommended age	14 years and up
Item model number	SPM9747
Educational Objective(s)	Develop hand-eye coordination, precision and strategy skills through remote control vehicle driving
Number of Puzzle Pieces	1
Assembly Required	No
Batteries Required?	No
Batteries Included?	No
tech_spec_battery_description_toys	No batteries required
Material Type(s)	Plastic
Remote Control Included?	No
number_of_channels	4
Color	multi
Release date	1 January 2024
ASIN	B07XZ9D8TK

Spektrum SRXL2 DSMX Remote Receiver, SPM9747

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