Info for a beginner please

Sorry that I’m a beginner at this, but I am very confused about Pix***** products. I have some questions:

  1. Is the Pixhawk 3 Pro the most modern and powerful Pixhawk FMU on the market?

  2. At the more miniature size, what is the latest version of the Pixracer? I see so many…

  3. Can both of these FMUs make use of RTK differential correction data (RTCM)?

  4. Can RTK data be sent via a Tx/module system like a FrSky Taranis QX7S with a R9M, or must a separate radio (WiFi, for example) be used?

Many thanks, and sorry about my ignorance. I would be most grateful for your help. It would clear up a great deal for me.

Imf

Hello,

Is the Pixhawk 3 Pro the most modern and powerful Pixhawk FMU on the market?
-> yes the Pixhawk 3 is the last generation of Pixhawk family

At the more miniature size, what is the latest version of the Pixracer? I see so many…
-> we don’t have the Pixracer.

Can both of these FMUs make use of RTK differential correction data (RTCM)?
-> yes sure

Can RTK data be sent via a Tx/module system like a FrSky Taranis QX7S with a R9M, or must a separate radio (WiFi, for example) be used?
-> you need a sperate telemetry radio (XBEE, 433Mhz telemetry, ESP8266…)