Thanks, Tryg. Yes, you can run this setup in the field away from any WiFi network or phone connection and run headless, connecting to an Android tablet. It helps to be using an UPS dongle to get accurate time information, but you can sometimes get close using an accurate watch. The software I am using on my uBitX has a built-in WSPR mode that doesn't need any external computer and I have used that to test portable antennas just setting my watch by WWV and watching the second hand to initiate the mode, then getting reception reports later. My rig is the V4, but a version the same software can run on any of the uBitX radios with a variety of displays including the original 2-line LCD. Here is a link to a number of articles and you are welcome to share any of mine:
One of those shows the interior of mine with a list of mods and links to source information. On a recent vacation at the beach I used mine with a compact 40m EFHW antenna and operating on very limited times before or after family was in bed I worked 28 countries, mostly in digital modes, from Australia to Greece during the week.?
=Vic=
Vic WA4THR