You might have come across the FrSky D16 Mode in the binding page of your FrSky radio especially if you are a beginner and might have wondered what it is. It is nothing but a communication protocol in the newer X-series of FrSky radios offering up to 32 channels, telemetry, S-Port support, unique receiver coordination, and other features.

So we are gonna learn some of the FrSky D16 receivers and get familiarized which will help you in while choosing a receiver or troubleshooting that is related to it. So Let’s get started

FrSky D16 X6R Receiver

FrSky’s X6R is FrSky D16 receivers that features 16 channels (6 normal PWM outputs and all 16 channels on the dedicated Sbus output). Moreover, the exciting new SmartPort and a traditional A2 port on the bottom of the receiver. You can pull the jumper and connect an FBVS for basic external voltage monitoring.

It is smaller than the X8R, but still packing 16 channels and the new SmartPort that supports the new hubless digital sensors! Or, You can connect the new variometer, and then connect the old hub to use existing analog sensors.

But that isn’t all the X6R can do. It can also work in “D8 Mode to work with the DHT, DJT, DFT and DHT-U transmitter modules. In this mode, you have 8 channels. The neat trick is the SmartPort still works in D8 Model!

Features at a Glance:

  • With external analog telemetry port(AD1), When pins of A1and X (Middle Pin) are connected by the jumper, A1 will change from External Analog Telemetry Port to Internal Built-in battery voltage sensor.
  • The number of channels: 1~6ch from conventional channel outputs, 1~16ch from SBUS
  • port. With RSSI PWM output (0~3.3V) on board.
  • Smart Port enabled, realizing two-way full-duplex transmission.


Specifications at a Glance:


FrSky DFT/DJT/DHT/DHT-U in D_mode

FrSky Taranis X9D Plus/XJT in D8 mode

FrSky Taranis X9D Plus/XJT in D16 mode


47.42×23.84×14.7mm (L × W × H)



Operating Range

full range (>1.5km)

Operating Voltage Range


Operating Current


Number of Channels

16CH (1~6ch from conventional channel outputs, 1~16ch from SBUS


TFR8SB Receiver

The TFR8SB is another  FrSky D16 receiver that is compatible with FASST 2.4GHz Air Systems (7CH Mode/Multi Mode) & Surface Systems (C1 Mode). SBus port means no receiver channel limitations except what your transmitter is capable of sending. Also, it prevents mismatched servo channel connections. Two selectable failsafe options mean more reliable – Use transmitter failsafe or receiver failsafe.Improved sensitivity and stability.Wider and higher operating temperature range, suitable for all kinds of models.


Features a Glance:

  • SB port is compatible with Futaba S.BUS servos and FrSky SBUS&CPPM compatible servos. No receiver channel limits (except by those on your transmitter) and prevent mismatched servo-channel connections
  • With RSSI output
  • Two selectable failsafe setting options (use native failsafe on radio side or set failsafe on TFR8SB side)
  • Channel setting for Futaba S.BUS servos and FrSky SBUS&CPPM compatible servos on TFR8SB
  • Improved sensitivity and stability
  • Wider and higher operating temperature range, suitable for all kinds of models
  • Firmware upgradeable

D4R II Receiver

This D4R-II is a great FrSky D16 receiver which is full-featured mini-sized 4 channel receiver. What makes this receiver different and unique than D4FR? The D4R-II’s data port allows you to connect a sensor hub so you can connect GPS, Variometer, temperature, RPM and all of the other great FrSky sensors. It also has 2 full-length Ipex detachable antennas. All of this is available in a package just a little larger than the D4FR.


Features at a Glance:

  • Firmware upgradeable
  • One external analog telemetry port and one digital data-stream port (connect to FrSky Sensor Hub FSH-01)
  • RSSI (PWM) and CPPM output – If CH3 and CH4 are connected by a jumper, CH1 will output CPPM for CH1~CH8, and CH2 will output RSSI (PWM)
  • Lighter weight and physically smaller
  • Alarm warning on low voltage, poor reception, etc.


The V8R4-II lightweight receiver is a great fit for small Park Fliers, 3D foamy and indoor slow flyers. Weighing in at a scant 3.5 grams, this is the perfect receiver for these types of applications. This receiver will operate as normal with your Telemetry module without having to switch over to none telemetry mode. Also compatible with the none telemetry modules – as well as with both the TARANIS TX and the XJT module too.



So that is all about this series of  FrSky D16 receiver. Hope this has helped some one to have a quick understanding of these receivers.