Hi Mark
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I have used a pi 4, with a number of the pi OS versions on wsjt-x.
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I have a 7" touch screen that connects directly to the pi. I mounted the pi with display on a angled board on a larger board. I got a small keyboard and mouse that rest on the larger board. I can power this with a LiPo battery pack that last a long time.
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I have a ham buddy here that uses his phone as a hot spot. He runs the pi headless and connects to it with a tablet. He also uses a lipo battery pack.
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You do need to learn the tricks for moving the pop up windows around when using small screens.
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Hope this helps
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WE7C
