NanoVNA-H4 firmware update 2/21/2020

[Mike Lewis]

I had not looked in a while but a new firmware release was made on 2/21 for the 4" NanoVNA-H4.

https://github.com/hugen79/NanoVNA-H/releases/tag/0.5.0

@hugen79 hugen79 released this on Feb 20

This update file is only for the 4-inch version NanoVNA-H 4 ! ! !

1.Fix the problem of insensitive touch screen;
2. Fixed the problem that the center frequency is higher than 1G;
3. Fix the problem of mark residue;
4. Update ChibiOS to 18.2
5. Correct the battery display ratio
6. Allow saving Smith display format settings

I have been using mine a lot lately in my new job as a marine tech on deep submersibles and the tow boats. Been testing all the VHF antennas and related cabling, found several bad connector assemblies in an original AIS cabling setup from a surplus Coast Guard Safeboat - none of the 4 PL259 shields were bonded to the connector in any way - has been that way since this particular boat was new. A challenge I had not run into before was how to deal with coax runs to VHF whip antennas that are exposed to pressures up to 18,000ft deep and potting the whip base assemblies. Your standard foam coax will certainly have issues with deforming.


Mike Lewis
K7MDL
CN88sf and EL87sm