I have had two of these. The unshielded antenna portion (clear) literally falls off without touching , engine on. Why is this happening?

This should not be happening. Spektrum's QA has always been hit or miss. I would definitely return them for either a refund or a replacement.

I got a t-rex 150x dfc set coming and wanting to make sure this is all i should need to fly with my dx6e radio?

maybe not, if it come with the FBL is microbeast then you need a special cable and update the firmware, better option buy the regular DSMX satellite receiver

How to you connect this to the rx2 on a fc6250hx? the supplied cable is 4 strand and the plug doesn't fit the 3 prog rx2 plug on the 6250

The 4 pins on the SRXL2 would need to be put on to the appropriate 3 pin connector. Flite Test has a video on how to do this for their Aurora 5 flight controller. The video is on you tube, just search for "Aura SRXL2 Setup and SRXL2 Telemetry Tuning".

How do you know if it works? No lights come on.

Lights must come on. - blinking . . . before binding. If the plane is upside down, you will not get lights. Level the plane and then red the instructions. Then if nothing happens, its a bad receiver.

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Spektrum SRXL2 DSMX Remote Serial Telemetry Receiver, SPM4651T Small

Spektrum SRXL2 DSMX Remote Serial Telemetry Receiver, SPM4651T Small

Product ID: 175710164

Details

Brand
Spektrum
Color
Black
Connectivity Technology
Radio
Model Name
Spektrum SRXL2
Special Feature
SRXL2

⚡Low Noise Amplifier for max range

📡20 channels ultra-fast serial data

🪶Lightweight & compact design

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B/.150

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your flight game with the ultimate telemetry edge!

PLUG PLAY BINDING - No extra bind plugs needed—simple bind button streamlines setup so you’re flight-ready faster.
COMPACT FEATHERLIGHT - At just 0.8 oz and 1.1 inches, it’s the perfect fit for Heli, Multi-Rotor, and FPV pros on the move.
DUAL DIVERSITY ANTENNAS - Maximize signal strength and reliability with dual antennas designed to cut through carbon fiber and metal interference.
BLAZING FAST SRXL 2 PROTOCOL - Experience ultra-responsive control with up to 20 channels of lightning-speed telemetry.
INTERFERENCE FREE EXTENDED RANGE - Low Noise Amplifier and DSMX 2.4GHz tech deliver rock-solid signal even in challenging environments.

The Spektrum SRXL2 DSMX Remote Serial Telemetry Receiver (SPM4651T) is a compact, lightweight receiver designed for advanced RC pilots. Featuring the open-source SRXL2 protocol, it supports up to 20 channels of ultra-fast serial data, enhanced by a Low Noise Amplifier for extended range and interference resistance. Dual diversity antennas ensure reliable signal in complex installations, while a wide voltage input range and simple bind button make it versatile and user-friendly for Heli, Multi-Rotor, and FPV enthusiasts.

Specifications

ASIN	B081H8PSKP
Additional Features	SRXL2 Technology
Best Sellers Rank	#90,775 in Toys & Games ( See Top 100 in Toys & Games ) #45 in RC Radio Receivers
Brand	Spektrum
Built-In Media	Spektrum SRXL2 DSMX Remote Serial Telemetry Receiver, SPM4651T
Color	Black
Connectivity Technology	Radio Frequency
Customer Reviews	4.7 4.7 out of 5 stars (166)
Item Length	1.1 Inches
Item Type Name	Remote Serial Telemetry Receiver
Item Weight	0.05 Pounds
Manufacturer	Spektrum
Mfr Part Number	SPM4651T
Model Name	Spektrum SRXL2 DSMX Remote Serial Telemetry Receiver, SPM4651T
Model Number	SPM4651T
Number of Batteries	1 Nonstandard Battery batteries required.
Smart Home Compatibility	Not Smart Home Compatible
UPC	605482427354
Unit Count	1.0 Count

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