David,
The NanoVNA-F developers announced a few days back that the command set for the NanoVNA-F overlapped the NanoVNA and; therefore, should run nanovna-saver with only small changes to the code. Rune, inquired about the nature of the code changes and they kind of backed off. At this point they are delivering a product without a document describing the command set (unless you want to dig through the C code) or a software application for capturing the data measurements. The device does come with a sandisk card, but I haven't seen any info about what the user can save to it. I hope to start seeing more info from early adopters such as yourself.
Herb
