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Both VNAs have worked fine before, but now both have the same problem. No change in settings that I can see. A local ham came around on the weekend with the same problem. Frustrating! Chris VK5SA

Run it from the cli so you can see what errors it gives. -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

I purchased my H4 from R&L. I only have version 1.1.01. It saves files perfectly to a SanDisk 32 GB Ultra Plus card. I know I need to upgrde the software, Don't know how, but I'm sure I'll figure it

You can buy H4 from R&L Electronics. Not sure of firmware though.

Tom Thompson (W0IVJ) shorted out R93, a 10 0hm resistor next to the SD Card socket, to get his unit to write to the Micro SD Card. I tried this fix also and now the unit works perfectly. Thanks to all

Isn't one variant more suitable for testing crystal filters as the sweep is more continuous? David -- SatSignal

If r93 is a 10 ohm resistor, try shorting r93. /g/nanovna-users/topic/micro_sd_card_issue/94630098?p=

Hello Group. I had the NanoVna Saver executable file loaded and working on my Ubuntu laptop. The Ubuntu version was 18, Then I let it upgrade to version 20. Since then when trying to run the Nanaovna

The -H (and -H4) versions have some additional firmware features, but the -F has a very nice type of display screen that is much easier to read in bright light, like for outdoor on-site antenna

The firmware authors also mention that "fast" writing 32GB cards do not work. -- Doug, K8RFT

An S1P file is a list of numeric values, for use by analysis programs. It's not an image that can be viewed, only a data file. Antscope2 is an example of a program that can use the S1P file. -- Doug,

A nifty feature of the Y21 method is that in addition to nullifying stray capacitance in an impedance measurement, it can calculate its value. The utility now reports it. It also reports when input or

Maybe the battery is failing. -- Doug, K8RFT

Mirfield Electronics are reliable UK suppliers of original kit - no clones! https://www.mirfield-electronics.co.uk/nanovna-network-analysers/ March delivery now, though. Cheers, David GM8ARV --

https://www.mirfield-electronics.co.uk/. May have to wait for stock though. HTH John M0MJE

If I recall correctly, I tried the app with my newer USB-C connector phone, and it didn't work either. Not without the OTG (On The Go) adapter which I had to use with the older phone. -- Doug, K8RFT

You might want to try a 16Gb card, lots of reported issues with the higher capacity cards over the past couple years, Moving to a lower capacity and all works OK.

I just received my second NanoVNA H4. I then up dated the software to "20220831.bin" using the STM32 CubeProgramer. I purchased this unit because it had an SD Slot in it and I thought it would work

using ver.1.2.14 that came on the NanoVNA-h4 i looked in 'files' section for documentation on how to recall S1P image on the SD card. i want to be able to recall a saved swr image to compare it to a

Erik, dl1ecd, https://eleshop.de/nanovna-h4.html Nach der Bezahlung in 4 Tagen geliefert. Vladimir, dl7pga