In this article, we will look into a few of these receivers and find out which one is the Best FrSky Receiver for Mini Quads.

FrSky has a plethora of compatible receivers for their Taranis line of transmitters as well as their Horus line of transmitters. Most of these receivers are compatible with a wide variety of crafts such as mini quads and large drones as well as ground rovers and even boats.

XM

The FrSky XM receiver specifically made for micro quads and mini quads with only S.Bus communication. It doesn’t feature telemetry or S.Port support, only an RSSI output pad (or via CH16). It is one of the smallest and lightest receivers from FrSky.

  • Weight: 1g
  • Dimension: 15 x 10 x 3.5mm
  • TX Protocol: D16
  • Receiver Protocol: SBUS – 16ch
  • Telemetry: No

You can learn more about the FrSky XM receiver from FrSky

 

XM+

The XM+ receiver from FrSky is the upgraded version of the XM receiver with diversity capability (2 antennas) which allows it to have the full-range capacity of the FrSky system.

  • Weight: 1.6g
  • Dimension: 21.5 x 12 x 3.5mm
  • TX Protocol: D16
  • Receiver Protocol: SBUS – 16ch
  • Telemetry: No

Like the XM receiver, the XM+ too does not support telemetry or S.Port but supports RSSI on CH16 (and a separate RSSI pad). It is also 0.6g heavier than the XM but I doubt this would make any meaningful impact on your mini quad performance.

 

XSR

The XSR from FrSky is basically an upgraded lightweight version of the ever-popular X4R-SB receiver.

  • Weight: 3.8g
  • Dimension: 25 x 19 x 11mm
  • TX Protocol: D16
  • Receiver Protocol: SBUS – 16ch
  • Telemetry: Yes – SmartPort

 

The active element on the XSR receiver is shorter than the standard 31mm length on other 2.4G receiver and hence you might experience a shorter range. You can easily trim off some of the shieldings on the antenna to expose the right amount of active element in order to get a better range.

The XSR receiver is currently discontinued by FrSky so it is better not to get these anymore as you will not receive any more updates from FrSky.

You can find more on the XSR receiver from FrSky

 

R-XSR

The R-XSR is an upgraded version of the XSR receiver. It has been made extremely light and smaller but at the same time trickles down all the features of the XSR receiver like a dedicated S.Port pin, full-range capability, and diversity.

  • Weight: 1.5g
  • Dimension: 16x 11 x 5.4mm
  • TX Protocol: D16, ACCESS (firmware dependant)
  • Receiver Protocol: SBUS – 16ch
  • Telemetry: Yes – SmartPort

The R-XSR carries all the features you’d want from a mini quad receiver like the small form factor, telemetry, and full range support. The receiver also has removable Ipex antennas than soldered on permanent antennas - which makes replacing them much easier. It is also updatable to ACCESS firmware which makes it even better.

You can find more on the R-XSR receiver from FrSky

 

XSR-E (XSR-M)

The XSR-E is similar to the R-XSR in every way but with a 20x20 mounting hole for stacking on top of FCs or on a separate 20x20 stacking/mounting location on your frame.

The XSR-M is with the collaboration between FrSky and Eachine.  The receiver supports S.Port and full-range with its diversity antenna setup.

Currently, this receiver is discontinued so I would not recommend anyone to purchase old stocks.

 

R9-MX

The R9-MX is the new receiver for the R9 900Mhz series for mini quads and other size quads, replacing the R9-MM receiver.

The R9-MX receiver is a full-range 900MHz receiver for the R9M transmitter system. It brings in everything good about the R9-MM receiver but with a more robust and detachable IPEX 1 antenna connector.

It has S.Bus, S.Port, PWM(4 Channels), and even an inverted S.Port pin which is useful when using it with F3 or F4 boards with only one onboard hardware inverter. It comes with ACCESS firmware by default. In case you are on the legacy R9 system (with ACCST), you can get the R9-MM receiver instead of FrSky and flash the ACCST firmware as the default new firmware that comes with it is the ACCESS firmware.

 

  • ACCESS protocol and supports OTA functions
  • 900MHz/868MHz long-range with low latency
  • Enhanced and durable design
  • Support S.Port / F.Port (Configurable in OpenTX / FrOS menu)
  • With inverted S.Port outputs
  • Signal redundancy function
  • Detachable Ipex1 connector antenna

 

Which is the Best FrSky Receiver for Mini Quads from this list?

In my opinion, the R-XSR is the best receiver in the 2.4GHz receiver list. It has S.Port and full range with a very small form factor.

In the 900MHz category, go for the R9-MX receiver.

 

In this article, we have seen various receivers from FrSky and have concluded with the two best receivers in both the 2.4G and 900MHz category. It does not matter which receiver you choose as long as it works for you and your transmitter.