Can you tell me exactly what has changed between the Alta 8 and the Alta 8 Pro?

With Alta 8 Pro, we’ve changed/added the following things:

• Replaced the Synapse flight controller hardware with a PX4 based flight stack and associated components,
  • New adapter board
  • New GPS / Compass Module
• Added options for 900mhz and 868mhz long range telemetry radios
• Added expansion ports