In the previous part 1 of the series “Which one: FrSky R9M Transmitter Module or TBS CrossFire?”, we have talked about the history behind switching over to 2.4Ghz radios from 27/72MHz and then lately been moving over to the 900MHz spectrum for more range and penetration through obstacles.

In this second part of the series, we will check out the key differences between the FrSky R9M Transmitter Module vs the Team Black Sheep Crossfire and see which would be more suited for your needs and requirements.

FrSky R9M module and R9MM receiver

FrSky R9 and R9M radio control system is the first FrSky long-range system which works in the frequency of 900MHz. The R9M module offers 4 switchable RF power outputs so you can choose the appropriate power for different flight situations from 25-100-500mW all the way up to 1W.

The above picture shows the (old) R9M


The module has switches for being able to choose to transmit output power.

R9M Features:

  • 2 power settings for EU 25mW (with telemetry) and 500mW (without telemetry)
  • 4 power settings  for FCC: 10mW, 100mW, 500mW, 1000mW (all with telemetry)


The R9M module has two LEDs to show the current settings. It also has an RS232 serial port that you can connect to a Bluetooth module or connect to your PC or a base station for getting the telemetry.

  • Vin Voltage Range: 4V~12.6V
  • External Power Supply: 4V~12V (2s Li-Battery is recommended as 3S can damage the board)

The R9MM receiver is a perfect match for the R9M Transmitter Module as it is a tiny receiver with full-range and telemetry. The FrSky R9 MM is the latest 900MHz mini receiver in the long-range series, super-low latency, high precision performance in an extremely compact design and the incorporate S.Port output to make it compatible for telemetry from your Flight Controllers.

The above picture shows the R9MM receiver.

  • Dimension: 16*10*2.8mm (L×W×H)
  • Weight: 0.7g (without antenna)
  • Number of Channels:
    Non-EU Version: 4/16CH (Telemetry)
    EU Version: 4/8CH (Telemetry) / 4/16CH (Telemetry) / 4/16CH (No Telemetry)
  • Operating Voltage Range: DC 3.5V – 10V
  • Operating Current: 100mA@5V
  • Operating Range: Up to 10km or above
  • Compatibility: R9M and R9M Lite

Team Black Sheep CrossFire Micro

The Team Black Sheep CrossFire Micro is a 900MHz system from Team Black Sheep that is similar to the R9M system. It is being manufactured by a company called Team Black Sheep Avionics, china.


The Above picture shows the Team Black Sheep Micro



  • 868Mhz EU/ 915Mhz FCC
  • Dimensions 66 x 48 x 21 mm.
  • Built-in Telemetry
  • 2 power settings – 25mW and 100mw
  • CRSF protocol
  • Low latency, 150Hz update rate
  • 8/12 channel output via PPM/SBUS/CRSF
  • Transmitter LED shows link health
  • Receiver “over the air” update
  • Micro USB for firmware updates

The Crossfire Micro has a great feature of OTA updates for the receiver and so you need not take out the receivers from your copter. This makes it easy for you to update all your receivers quite easily and quickly and unlike the FrSky R9M Transmitter module, you update your crossfire module with a Micro USB cable via your PC than via your transmitter and all that pesky business.

You also have the option to choose the full-size for up to 2W of total output power. Another advantage of the crossfire is that you have an in-built WiFI module that allows for TBS cloud that lets you connect and control all your TBS products including Crossfire, Fusion, Unify as an ecosystem.


In this series of “Which one: FrSky R9M Transmitter Module or TBS CrossFire? Pt 2”, we have seen the specifications of both R9M Transmitter Module and the Team Black Sheep Crossfire system and compared the twos feature.

If you want to choose a 900MHz system, if you have the money, you should try to get the Crossfire system because it is much more reliable (except for the QX7 transmitter where you need to do a mod to getting working), else you can get the R9M module which is also good for the money (I personally use the R9M module)