开云体育

I'm going to add an option to plot data points without a line connecting them. This is useful for assessing the data density, which is not always evident in a normal curve. The sample below reveals

Excellent.

No, but clicking the mouse will put a marker at the data point nearest the mouse cursor. Then you can use the mouse wheel to step up and down the curve to the desired point. I'll think about

Hi Dave Here My message about RG213 coax measurements posted here on Avril 5 2025: for My RG213 cable (25m length) loaded by a 50.3 Ohm resistor , I used the centered impedances circle methode on

Thank you. Are the data points from the s1p or s2p file highligted on the plot? A cursor that is positioned at or near an input file value is needed. For example, the crossing of a Q contour or SWR

Thanks, Alan. That's what I figured, but I have no experience with Smith charts so I wasn't sure. I've posted the latest here: https://k6sti.neocities.org/splot.htm Brian

No. Two different tools applied as needed, others may have different opinion.

@DiSlord Is it possible to add a function for constant SWR-circles on the Smith-chart of NanoVNA, for example SWR 2 and SWR 3, perhaps in red color? Maybe also in the NanoVNA-App-D as I think it was

Alan, currently I do not provide a way to display SWR circles and Q contours at the same time. Should I? Brian

Hi Dave This method of direct experimental measurement, without any computational artifice and without the risk of modeling errors or theoretical estimations, is simply my own used method, which I

Excellent, Very nicely done.

By Royal command . . . After much experimentation, I reverted to the standard grid with optional fill-in. I used the homebrew precision circle maker for the grids and SWR/Q curves. Brian

Thanks a lot Dave, for the quick response. Here the sun is just rising up! Shall look out for your post by evening (that will be 'tomorrow' for you!). 73 Jon, VU2JO [email protected]> wrote:

Jon, please wait for tomorrow as it's supper time here in N. Colorado. I'll do another procedure using the Smith Chart and the VNA on measuring the C and L. Dave - W?LEV [email protected]> wrote:

Dave, I have been waiting for this post! Shall try out the first method as soon as possible. For the second and third methods, I have seen only potentiometers of 10K and above here. Shall check again.

To start off, the common mode choke (CMC) I'm addressing is also referred to as a transmission line transformer. Physically it consists of a single bifilar set of windings on an appropriate ferrite

Please include Q=1 contour as it is ROYAL! That will allow resonator Q to be determined. As well, some other Q definitions.

How about a pipe? The sender doesn't even have to be aware of the pipe's existence. WIKIPEDIA - Named Pipe (Software) https://en.wikipedia.org/wiki/Named_pipe 73 de Andrew/N5ASE [email protected]>

I plot SWR circles of 1.5, 2, and 3. Maybe I'll just plot Q contours aligned with those. Thanks for the help, Alan. Brian

I'm not going to write another NanoVNA-Saver or NanoVNA-App. Someone can incorporate the features they like into those programs if they wish. Brian