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Hello Bob, The neat Smith Chart analysis & Simulation tool titled "SimSmith" integrates to my NanoVNA... It runs on multiple OS. Suggest you take a look at that, as it beats pencils and a calculator

My board says v4.2.1. Unfortunately I don't have an oscilloscope right now to check the xtals.

Bob, move your mouse into the areas with the graphs and hit the right mouse button to bring up the control menu.? Also search the forum messages for more info on Nanovna-App.? On Sat., 19 Feb. 2022

Great post Bob, patient, thoughtful, and to the POINT. i.e. people do your homework before jumping into the 'fray'. There are lots of 'us' guys out there willing to help, but it is your responsibility

I've subscribed to this group for a long time but never posted. I only bought my first NanoVNA last weekend. I bought an H4 for the larger screen. Everything seems to be working fine. I had an issue

As happens so often in these threads, we need to go back to the original post and read the question. Kevin was puzzled as to why his S11 results did not show a distinct "short" when he tested his 300

Hello, I install LibreVNA and work, I use the USB port for different device and work, the only problem is NanoVNA-Saver is installed but not find the the serial/usb device. *Sent:* Saturday, February

https://askubuntu.com/questions/112568/how-do-i-allow-a-non-default-user-to-use-serial-device-ttyusb0

Hello, I set up one laptop with Mint Linux "cinnamon" I install NanoVNA Saver I don't find the "device port" get a problem with the LiteVNA and the NanoVNA V2 plus4. Please some help, I'm computer

That shouldn't be an issue as you're getting 3V at VDD, which is what the CPU needs. Look at the PCB really closely to ensure there is no debris shorting out any pins anywhere. If you have an o'scope,

Yes I should check R and may give me a clue. I have a junk unit that screen broke, I was using with computer and did a update and now won’t come on.

Checked the rocker switch, it is working correctly. I came across a thread here: /g/nanovna-users/topic/nanovna_does_not_want_to/32846852 where they had an issue with a ip5303 or

I believe that your problem is a bad battery that won't take a charge, therefore, it wont start either! V. Kaufman

I have a smaller one that the screen was damaged so maybe I will have spare parts. I’m I did check the resistors the other day and showed good. I will see it I can find that schematic so figure out

On 2/17/22 3:41 PM, Jim Lux wrote: > On 2/17/22 12:57 PM, Larry Rothman wrote: >> ? Alan, >> The schematics are in the Wiki. >> There are only resistors in the input pad. You need to measure them to

On 2/17/22 12:57 PM, Larry Rothman wrote: > Alan, > The schematics are in the Wiki. > There are only resistors in the input pad. You need to measure them to see which is fried. Hopefully, you didn't

As previously described, (see attached schematic ) there's a resistive pad (E2, R22,R23,R24, R25) then the SA612AD ( E4, U8.) I doubt it would blow up anything else that's connected (that is, the

Check the rocket switch with an ohmmeter to verify all 3 switches are normally open. On Thu., 17 Feb. 2022 at 4:32 p.m., Brady Nelson<tbradynelson@...> wrote: I did have some trouble with the

I posted the schematics in the other post you made on this subject.. Roger

I did have some trouble with the button when it was working, but I keep messing with the button to see if I can get it to start, no luck.