Could I use USB for powering the easyTRX3?

Yes and no,

if you connect the easyTRX3 only by USB, only the microcontroller is active!

That`s fine for programming your shipdata already at home.

There is an easy reason for that:
The max. current from your USB socket is approx. 500mA.
But if the easyTRX3 should transmitt, we need for 26ms a current of 2A.
Thats absolutely too much for USB.

If you are connected by USB only, following parts are inactive:
-WiFi deactivated, if available
-GPS receiver and internal antenna deactivated
-AIS transmitter and receiver deaktivated
-NMEA2000 deactivated

If you are connected by USB only you´ll see following LEDs:

Category: FAQ: easyTRX3

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