The NanoVNA-F owners are probably wondering what all the fuss is about as they have enjoyed a large display from the get go.

I simply suggest that anyone in the market for one of these devices, join the (different) NanoVNA-Groups. While I would expect anyone developing code would have a similar setup, I think the fact that we are seeing this problem with the latest firmware, it continues to be the wild west of coding.The case fit-up around the SD socket is poor, it is very easy to drop the SD card inside the case, and quite inconvenient to extract it. You can also export the data to a computer using the NanoVNA-H4’s USB interface and supporting software. I'm happy to have my hands on the 4" NanoVNA-H4 and can deal with a few warts knowing hugen will address them in a timely matter. eHam reserves the right to edit or remove reviews and/or products for any reason at any time without prior notice. If a review is posted that you believe is unfairly critical of your product and you wish to respond with useful information contact eHam's Product Review's Manager to request the addition of an "eHam.

Given hugen's history I know he will quickly release a firmware fix, but this being the Chinese New Year will likely delay his response. The resolution of the screen is about twice that of the NanoVNA-H but does not come close to matching the resolution of the NanoVNA-F. If someone can describe menu changes or point to an image for printed NanoVNA-H4 Menu Structure Map, I will create and updated map for https://groups. I've not yet tested it in two-port mode, but I'm not expecting to see any issues there - a basic functionality check shows it working. Therefore it's reasonable to assume that the "uptick" in the blue Timelab curve is due to the 53132A timebase drifting against the GPSDO output.the only caveat is that these analyzers may be hard to read in bright sunlight, so keep that in mind for field operations.

It is very easy to become "obsessed" with the 50 ohm, 1:1 SWR, when in fact the antenna that you are testing may not actually exhibit 50 ohms on its resonant frequency at its feedpoint.Like I posted earlier, don't consider this a stamp of approval as I only use a very small subset of the firmware's features but still this 1.