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Roger, You are correct that it does not change the actual impedance presented to the filter. However, it is possible to mathematically compute S parameters in, say, a 500 ohm system knowing the S

Edy555, the first NanoVNA developer, did some measurements on monolithic crystal filters like the ones Gerard is using (45R15AZ; motorola 20J26) . The article is on his website in Japanese at the link

I respectfully disagree with you. The Port Z feature in the latest DiSlord software only does the mathematical calculations necessary to convert the measurements to a different system impedance (like

Gerard, 1) The DisLord firmware should work on most any NanoVNA, clone or not. 2) I don't know if the PORT-Z feature works via NanoVNASaver. 3) 3-leged filters should work with the PORT-Z method.

Hello John, Thank you for your response 1) First I have to see if I can download it into my nanoVNA (Compatibility) and study how to do it. See picture probably a clone 2) Then I emulate more with a

Thanks for the tip. I got a new display and now the screen capture works. The old display has the version 1.0 and the new display has the version 1.1.

Gerard, The latest DisLord firmware for the NanoVNA does allow you to see what the filter response would be with a load impedance different than 50 ohms. First perform an SOLT (short, open, load,

Hello, How to find the values of the "Terminating impedance" of a filter 2 poles. (values of resistor and capacity) I have 2 models, but I can’t find the values on the Net (45R15AZ; motorola 20J26)

Download link in this message >> /g/nanovna-users/message/29523 Roger

Hi Francois ... As you told " ....I went from 0.3.8 which worked under Seven ..." , friend of yours, gave you a "special" version 0.3.10 which, according to your experience, works fine under WIN-7 ...

Why don't you go back to an earlier version. What does not work is to use a recent version on an old OS. I don't think it affects the drivers (what do the experts say?). Personally I went from 0.3.8

The first thing I would try is to use a new USB cable. They do wear out. And Saver, as good as it is, does not do very good error checking on returned data from the nano - it wxpects it to be

0.5.2 is buggy. Wait for 0.5.3 https://github.com/NanoVNA-Saver/nanovna-saver/issues/541#top I am testing fixes daily as the developers sort out the problems. (Linux here but I'm sure these issues

Brent I just downloaded SAVER 0.5.2 and it is working fine with my Win10 (10 yr old) desktop. I do not see a whole lot of changes compared to earlier SAVER versions in terms of measuring common

Tonight NanoVNA Saver started crashing a few seconds after I connect to the first gen NanoVNA I've been using for a long time. The program finds the serial port, and is stable until I connect. It says

According to information I found, the MS version will have a _M after the model number. Both my NanoVNA-H and NanoVNA-H4 do not have the _M after the model number so they are SI models. There is also

Tim and Dragan, Thanks for your inputs. I have now updated my H4 with the SI dfu file.

Several years old use SI version. MS version is for recent production units with MS on the back label. Roger

/g/nanovna-users/message/29639

I have a NanoVNA-H4 which is several years old. The back says HW version 4.2. The firmware lists contain either a "MS" or "SI". My 5351 says "BG008 006. Which version of firmware should I use? Thanks,