Lucas wrote a reply on A Million Times 288 clone.Dan Julio has updated the log for gCore (II) - a dev board for portable GUI gadgets.
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If you don’t like the touch screen, you can also control the device via USB.
It also shows a Smith chart of the reactance. The device shows return loss as a plot and you can use a cursor to precisely measure the values. Just as a quick test, you can see early in the video the analysis of a rubber duck antenna. The device uses a rechargeable battery if you need to haul it up to an antenna tower, for example. NanoVNA is tiny but sweeps from 50 kHz to 900 MHz and has a touch screen. You can see one of the several videos he’s posted, below. bought one for about $50 and made a series of videos about it. Vector network analyzers - VNAs - haven’t had quite the same proliferation, but NanoVNA may change that. Now you can get scopes of various sizes and capabilities on nearly any budget. There was a time when oscilloscopes were big and expensive.
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