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Original FrSky X4RSB 2.4G 3/16CH Telemetry Receiver with CPPM SBUS Smart Port for Taranis X9D Plus Transmitter

Original FrSky X4RSB 2.4G 3/16CH Telemetry Receiver with CPPM SBUS Smart Port for Taranis X9D Plus Transmitter

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The X4R-SB receiver features 3 PWM outputs (normal servo) and 1 Sbus port that carries all 16 channels. Plus the Smart Port and a traditional AIN port are still located on the side port of the receiver. A FrSky FBVS can be connected to the A2 port for simple voltage monitoring.

Firmware upgradeable
Smart port enabled, realizing two-way full duplex transmission
External analog telemetry port (AIN) for basic voltage monitoring
Light weiht and physically smaller than X8R and X6R receivers
With PWM, CPPM and SBUS output options, up to 16ch available
With RSSSI PWM output (0-3.3V) on board

Brand: FrSky
Item NO: X4R-SB
Operating voltage range: 4V-10.0V
Operating current: 100mA @ 5V
Operating range: >1.5km (Full Range)
With RSSI output on board: PWM output range (0-3.3V)
Compatibility: FrSky X-series modules and FrSky transmitters
Channel: Channel 1-16 (SBUS), channel 1-8 (CPPM)
Size: 40.6 * 23 * 8mm
Weight: 5g

Package Information:
Package size: 16.5 * 9 * 2cm / 6.5 * 3.5 * 0.8in
Package weight: 34g / 1.2oz
Plastic package

Package List:
1 * FrSky X4R-SB Receiver
1 * Cable
2 * Jumper
1 * English Manual

Customer Questions & Answers

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0 votes

is this compatable with the FrSky djt module?

  • I would think so. That's the plug in module for other radios so they can use the Taranis sbus and ppm recievers? Then yes.

    By Nicholas on April 30, 2018

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0 votes

Can i install this to a vortex 250 pro ummagawd edition and have it work with the tbs tango

  • Yes, the JR Module on the Tango according to its specs can support Frsky as well as many other options.

    By Kasumi Tooyama on April 29, 2018

0 votes

What is the range of this unit?

  • About 1 Kilometer on flat ground

    By Evelin on April 16, 2018

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0 votes

Is this a reciever with telemetry or does it add on the telemetry function to a FrySky reciever?

  • Hello,this reciever with telemetry.

    By Narciso on April 10, 2018

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0 votes

I am new to the sport. Could you tell me how to set the failsafe using this receiver? Thank you

  • in the menu page where you set the transmitter to bind..directly below that there is the failsafe. .i use no pulses but you can choose whichever u want..just be carefully if you choose hold last position. .i wouldnt use that for multirotors

    By AmzonUser on April 3, 2018

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0 votes

Will this receiver work with the Vortex 250 pro quadcopter?

  • Yes

    By Pinzón on March 30, 2018

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0 votes

Can you use the 3 regular channels as well as sbus? Trying to connect gimbal for camera but i dont have the plugs available on my f4 flight controller

  • Yes, but I'm not sure what the channel mapping will become. I have a feeling the PWM ch#'s won't be 1-3 like it is labeled on the receiver. You may have to do some trial and error to figure out what channels the PWM outputs will become when using PWM and SBUS at the same time.

    By dmast51 on March 21, 2018

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0 votes

Which version of firmware does this come with? Looks like the latest version is 170322 released on 2017-03-28

  • No sure...the device works great.

    By Werner on March 7, 2018

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0 votes

Supplier, what firmware version comes with this receiver? will it bind with a taranis x9d plus transmitter running firmware update 2.1.6....

  • It should bind without problem to the taranis. The only reason why it ever wont is because you say have EU firmware and its international. However even when this is the case there are tutorials how you can flash the reciever with the port on the back of the taranis.

    By Toby T. on February 27, 2018

0 votes

Why wont it bind with my futaba 14 sg. I ha 2 frsky 8xrsb that bind why wont this one.

  • When this receiver is bound to a transmitter. You have to jumper certain wires to set it in it’s sbus/ppm/pwm modes. Look up which wires to jump from FRsky. And try again. I believe the 8xrsb only has one mode it binds in. The x4rs have at least 3 modes. Maybe 4.

    By Nicholas on February 15, 2018


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Customer Reviews

Average Rating:


based on 9 Customer Reviews

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  • By John U.

    January 16, 2018

    This is by far my favorite receiver to use with my Taranis transmitter. I always de-pin mine and direct solder the wires to make it smaller and lighter. Not much else to say about it, it just works and works well. My only complaint is the newer versions that are being shipped are using a different connector for the antenna cables and I bought a bunch of antenna replacement cables a while back because if you are flying a lot, you will damage the cables over time. I can't use any of those cables I bought on the newer X4R-SB units I've received this week. I can't find replacement cables anywhere for them either. For this reason, I am only giving this 4 stars. If they had kept the antenna connectors the same or documented what the new connector is called or where to get replacement cables, I'd have gladly given this a 5 star review.

    Is this helpful? (0) (0)

  • By DagDerNiT

    January 11, 2018

    This caused me to crash and break my new Runcam eagle fpv camera on my 185 racer. Range was maybe 30 or so yards and it dropped like a rock onto the concrete at full throttle ;( I am not a happy customer. Hope my motors and everything else is ok... Upon checking everything closely, I found the antenna to be loose which was the culprit. The receiver is working great and I was also able to also fix my fpv camera. Life is good!

    Is this helpful? (0) (0)

  • By Nandi

    January 8, 2018

    Great receiver. It was authentic.

    Is this helpful? (0) (0)

  • By Tony

    December 22, 2017

    Had to buy these twice. First one was DOA. But once you get it working, absolutely fantastic!

    Is this helpful? (0) (0)

  • By fredP

    November 30, 2017

    Overrated. Too much trouble to get it to work with a lost drone buzzer. Update: I purchased a new unit to use with my Omnibus F3 flight controller. Now that I understand how to use Betaflight to set it up the unit, most of my problems with the radio receiver are now resolved. The major flaw with the receiver is with the antennas. They break very easily so be careful with them. In addition, putting a replacement antenna on is a real pain. I ended up destroying my receiver when I pressed too hard trying to snap the antenna back on.

    Is this helpful? (0) (0)

  • By UrbanSoot

    November 26, 2017

    These seem to be hit and miss. Most work great, but once in a while you get one with range issues.

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  • By mike stevens

    November 7, 2017

    nice receiver with the performance you expect from Frsky. A little big for your smaller FPV quads though. I put mine on a 210 where the weight saving isn't a big issue since the quad is so small and light as is.

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  • By Jarhead

    September 5, 2017

    I read a few reviews and this rx seemed like the way to go with my setup. However, since they are made in China the quality of this 1 I received out of a thousand others, the antenna broke right off the board after a semi-rough landing. Thought they were a little more durable. This may only be me and a handful others but, I bought another and will try it again. Overall good product.

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  • By Garrett B.

    March 23, 2017

    Works great on the dog

    Is this helpful? (0) (0)

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