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Oops, for size, do you mean capacity or physical? It takes an microSD card also known as a TF card of any capacity? I've used a 32GB and 32MB without any problems On Wed., 24 Mar. 2021 at 7:10 p.m.,

I just got a new H4 form R&L Electronics and it has the SD receptacle. What size SD card does it accept? Mike N2MS

Hello DiSlord, T`hanks for the fast response, I reloaded 1.0.50 again and now it works... (?) I'm not sure what I did wrong before, but now it is working fine, its also much faster, which is great! My

See this topic (Now firmware can autodetect installed quartz, if no run LSI mode, time tick only while device power on) /g/nanovna-users/message/14447

For run/pause sweep need set/remove flag on Stimulus->Pause sweep On direct connect CH0 to CH1 port you should see S21 at 0 (if all work and calibration correct) on both port open ess noise at bottom.

Thanks for the information, Larry. Does the clock have to be working for the screenshot and s1p, s2p to be saved? Or do I just have to plug in a micro-SD card to get it to work? I guess the saved

Hello All. I have a NanoVNA H-4, and I have been using DiSlord's 1.45 SW for about 9 months. It is great,. it's stable and performed as expected. I recently discovered the new 1.50 SW and decided to

BTW,? have a look at OneOfEleven's nanovna-app program - it takes screenshots,calibrates the device and a lot more. The link is in her github account but you can find the link by searching for

In DiSlord firmware, the screenshot works if you click on the centre, bottom of the screen. You can add a 32KHz xtal on the PC14-PC15 pins at the bottom edge of the H4 PCB, then set using the time cmd

Several months ago, possibly last year even, there was some discussion here about the nanoVNA-H4 as having built onto the boards either a jack that would accept micro-SD cards or at least the circuit

Roger, My apologies for the late reply, delivering curry, toilet rolls and various biscuits around the country has kept me away from home. Thank you very much, will look into this as I am now off for

JMR, You have a NanoVNA-H. Correct? Which version of firmware are you using for best results? I will try to make a comparison since I have -H and -H4 NanoVNAs. Roger

I can try the latest firmware to see if things are improved but can you post up a link and a version number to try?

Hi Dislord, thanks for the reply. I don't know if this is useful but I did briefly try several versions of newer firmware (including yours) on my nanoVNA-H and I found the performance wasn't as good

Can you get last NanoVNA firmware and made measure vs small bandwidth setthing (30Hz ?) This should reduce noise

Here's the nanoVNA attempting the same test. This is a really nice (expensive!) PPI 1111 560pF cap in series with a 0.333R resistor and also just the PPI 560pF cap without any added resistance. The

OK thanks. I've not studied the nanoVNA beyond the input to the ADC so I don't know how it does things in firmware. To try and counter the research article that Roger linked to I dug out another PPI

On 3/23/21 7:48 PM, Roger Need via groups.io wrote: > On Tue, Mar 23, 2021 at 07:24 PM, jmr wrote: > >> I've not actually looked inside my nanovna but a quick glance at the online >> schematic shows a

On 3/23/21 7:24 PM, jmr via groups.io wrote: > On Wed, Mar 24, 2021 at 12:39 AM, Roger Need wrote: >> I did some research today on how the NanoVNA calculates the reflection >> coefficient, Gamma, from

On 3/23/21 5:39 PM, Roger Need via groups.io wrote: > On Tue, Mar 23, 2021 at 06:15 AM, Jim Lux wrote: > > >> You should really be looking at the I/Q uncertainty (R and X) rather >> than mag and