FrSky X4RSB, FrSky D8R-II and FrSky D6FR are the three models of FrSky telemetry receiver. The newest model of X4RSB is lighter and physically smaller than D8R-II and D6FR, and some configurations have been extended on the original basis. It offers two selectable failsafe setting options and isn’t compatible with D-series telemetry module, which differs from other two. Features of D8R-II almost remains the same with D6FR, while D8R-II offers more channels, with larger size, weight and power consumption.

FrSky X4RSBFrSky X4RSB specs and features:

  • RSSI (PWM) output
  • Lighter weight and physically smaller than D8R-II & D6FR
  • Two selectable failsafe setting options – native failsafe or user programmable failsafe
  • External analog telemetry port (AD2)
  • SB port is compatible with Futaba S.BUS servos and FrSky SBUS&CPPM compatible servo
  • Dimension: 40*22.5*6mm
  • Weight: 5.8g
  • Number of Channels: 3/16Ch (1~3ch from conventional channel outputs,1~16ch from SBUS channel)
  • Compatibility: FrSky X-series Module (XJT etc.) Taranis X9D in D16 mode(X4RSB is not work with D-series Module)

FrSky D8R-II specs and features:

  • advanced Continuous Channel Shifting Technology (ACCST is our advanced technology it shifts channel hundred times per second and there is no signal conflicts and interruptions) robust frequency agility
  • Easy to bind and very fast link-up
  • Excellent reboot time
  • True Diversity with two antennas
  • All channels can be programmed with Failsafe, quickly and easily
  • Quick and extremely stable in performance
  • Precise and smooth servo response
  • Extended range (1.5km-2.5km)
  • Compatible with FrSky two way telemetry modules: DFT, DJT, DHT, DHT-U
  • Power consumption:100 mA
  • Resolution: 3072
  • Dimensions: 55 x 25 x 14 mm
  • Weight: 12.4g
  • Number of channels: 8

FrSky D6FR specs and features:

  • Advanced Continuous Channel Shifting Technology (ACCST is our advanced technology it shifts channel hundred times per second and there is no signal conflicts and interruptions) robust frequency agility
  • Easy to bind and very fast link-up
  • Excellent reboot time
  • True Diversity with two antennas
  • All channels can be programmed with Failsafe, quickly and easily
  • Quick and extremely stable in performance
  • Precise and smooth servo response
  • Extended range (1.5km-2.5km)
  • Compatible with FrSky two way telemetry modules: DFT, DJT, DHT, DHT-U
  • Power consumption:50mA
  • Resolution: 3072
  • Dimensions: 42x 22 x 11 mm
  • Weight: 7.1g
  • Number of channels: 6