#define ENC_A         17

  #define ENC_B         18

  #define FBUTTON       19

  #define PTT           22

https://github.com/AJ6CU/ubitxV20

Gerbers for a corresponding Raduino with this pinout (v5/v6 support) is located at:
https://github.com/AJ6CU/raduino-for-new-gen-of-MCUs/tree/main/RaduinoClone/RaspberryPiPico

These Gerbers require the ability to solder surface mount components. In particular, the si5351 can be challenging. 

The original uBITX Memory Manager will *not* work with this platform. An alternative set of python based applications that provide backup, restore, and customizations is available at:
https://github.com/AJ6CU/uBITX-EEPROM-Manager

You will need to be "python" smart to get these alternative replacement for the uBTIX Memory Manager to work. They are not perfect, but should be useful. A GUI version that fully replaces the uBTIX memory manager is underdevelopment. At that point, I will also improved the packaging so that non-python folks an install it and use it.

NOTE: ALL THIS IS EXPERIMENTAL WORK! USE AT YOUR OWN RISK (AND ENJOYMENT!)

73
Mark