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saving measurements from nanoVNA

Paul AA6PZ All Messages By This Member #10170 Many of you have used nanoVNA for antennas and other purposes.? Can anyone suggest how to save data to files on a computer? There are several apps that purport to do that, but I didn't rather not try several to find one that's actually useful.
Christopher AI6KG All Messages By This Member #10171 There are some options here: I am keen on nanovna saver.? In fact I? rarely use a nanovna without it.? ?It increases the effective resolution of a sweep, computes filter widths, knows the hand bands, manages calibrations and much more. 73 de AI6KG toggle quoted message Show quoted text On Mon, Nov 4, 2024 at 12:35?PM Paul AA6PZ via <aa6pz=[email protected]> wrote: Many of you have used nanoVNA for antennas and other purposes.? Can anyone suggest how to save data to files on a computer? There are several apps that purport to do that, but I didn't rather not try several to find one that's actually useful.
Doug Hendricks All Messages By This Member #10172 Christopher,? how do you measure capacitors and inductors with? a nano vna?
Paul AA6PZ All Messages By This Member #10173 Simple Use the nanoVNA to measure impedance. Take one of the following formulas and a little algebra to solve for C or L. ? ? On Monday, November 4, 2024 at 02:41:07 PM PST, Doug Hendricks <ki6ds1@...> wrote: Christopher,? how do you measure capacitors and inductors with? a nano vna?
Doug Hendricks All Messages By This Member #10174 Paul, I? need more information.? ?I have a pair of alligator clips connected with rg174 to a sma connector.? ?I know how to calibrate that system.? ?What? settings do I set S11 to?? What am I looking to read?? Sorry, but I? don't know, that's why I am asking.? ?Doug
Christopher AI6KG All Messages By This Member #10175 What AA6PZ said.?? In practical terms, find a frequency where the reactance is between 25 to 100 ohms, and do the math.? ? To take the math a step further: Z = 50?Ω?. (1?+ S11) / (1- S11).? ? ? ? The real part is the real part (ohmic). If the imaginary part is positive, it is inductive, and the imaginary part is jωL. And if it is negative, it is capacitive and the imaginary part is 1/jωC. Some VNA's??you this directly.? ?NanovnaSaver will: 73 de AI6KG toggle quoted message Show quoted text On Mon, Nov 4, 2024 at 2:49?PM Paul AA6PZ via <aa6pz=[email protected]> wrote: Simple Use the nanoVNA to measure impedance. Take one of the following formulas and a little algebra to solve for C or L. ? ? On Monday, November 4, 2024 at 02:41:07 PM PST, Doug Hendricks <ki6ds1@...> wrote: Christopher,? how do you measure capacitors and inductors with? a nano vna?
Paul AA6PZ All Messages By This Member #10176 Actually it's easier than that. The VNA has the equations. The other day, I was looking at the impedance of something.? In the top center of the display was the number in Ohms at the marker frequency. We all know that inductors have positive reactance and capacitors have negative reactance. So, if the Ohms value was positive, next to "Ohms" was uH.? If the value was negative, the value was pF. Most times the VNA is sweeping over some range.? There is a marker that shows as a "dot" on the graph.? Press the left button and the marker frequency goes lower. Press the right button and it goes higher.? I think there is also a way to move the marker with the touch screen.? I don't immediately recall the rest of the VNA settings.? Probably there is more than one way. On Monday, November 4, 2024 at 03:26:37 PM PST, Christopher AI6KG <ch@...> wrote: What AA6PZ said.?? In practical terms, find a frequency where the reactance is between 25 to 100 ohms, and do the math.? ? To take the math a step further: Z = 50?Ω?. (1?+ S11) / (1- S11).? ? ? ? The real part is the real part (ohmic). If the imaginary part is positive, it is inductive, and the imaginary part is jωL. And if it is negative, it is capacitive and the imaginary part is 1/jωC. Some VNA's??you this directly.? ?NanovnaSaver will: 73 de AI6KG toggle quoted message Show quoted text On Mon, Nov 4, 2024 at 2:49?PM Paul AA6PZ via <aa6pz=[email protected]> wrote: Simple Use the nanoVNA to measure impedance. Take one of the following formulas and a little algebra to solve for C or L. ? ? On Monday, November 4, 2024 at 02:41:07 PM PST, Doug Hendricks <ki6ds1@...> wrote: Christopher,? how do you measure capacitors and inductors with? a nano vna?
Christopher AI6KG All Messages By This Member #10177 AI6KG: Some VNA's show? you this directly. ? AA6PZ: Actually it's easier than that. The VNA has the equations. We are in violent agreement.? ?:-)? ? I was just trying to show a bit more of the math. 73 On Mon, Nov 4, 2024 at 4:17?PM Paul AA6PZ via <aa6pz=[email protected]> wrote: Actually it's easier than that. The VNA has the equations. The other day, I was looking at the impedance of something.? In the top center of the display was the number in Ohms at the marker frequency. We all know that inductors have positive reactance and capacitors have negative reactance. So, if the Ohms value was positive, next to "Ohms" was uH.? If the value was negative, the value was pF. Most times the VNA is sweeping over some range.? There is a marker that shows as a "dot" on the graph.? Press the left button and the marker frequency goes lower. Press the right button and it goes higher.? I think there is also a way to move the marker with the touch screen.? I don't immediately recall the rest of the VNA settings.? Probably there is more than one way. On Monday, November 4, 2024 at 03:26:37 PM PST, Christopher AI6KG <ch@...> wrote: What AA6PZ said.?? In practical terms, find a frequency where the reactance is between 25 to 100 ohms, and do the math.? ? To take the math a step further: Z = 50?Ω?. (1?+ S11) / (1- S11).? ? ? ? The real part is the real part (ohmic). If the imaginary part is positive, it is inductive, and the imaginary part is jωL. And if it is negative, it is capacitive and the imaginary part is 1/jωC. Some VNA's??you this directly.? ?NanovnaSaver will: 73 de AI6KG On Mon, Nov 4, 2024 at 2:49?PM Paul AA6PZ via <aa6pz=[email protected]> wrote: Simple Use the nanoVNA to measure impedance. Take one of the following formulas and a little algebra to solve for C or L. ? ? On Monday, November 4, 2024 at 02:41:07 PM PST, Doug Hendricks <ki6ds1@...> wrote: Christopher,? how do you measure capacitors and inductors with? a nano vna?
Paul AA6PZ All Messages By This Member #10178 Upon reflection, maybe this message will be more helpful.?? The nanoVNA is quite a complex thing capable of doing many things.? Navigating the menu of soft keys is not exactly intuitive, but it does allow a lot of functionality with simple hardware.? If you go here: you will find the complete manual discussing all the functionality.? Expect it will take as long to thoroughly understand as the manual for a full featured transceiver.? On Monday, November 4, 2024 at 04:17:18 PM PST, Paul AA6PZ <aa6pz@...> wrote: Actually it's easier than that. The VNA has the equations. The other day, I was looking at the impedance of something.? In the top center of the display was the number in Ohms at the marker frequency. We all know that inductors have positive reactance and capacitors have negative reactance. So, if the Ohms value was positive, next to "Ohms" was uH.? If the value was negative, the value was pF. Most times the VNA is sweeping over some range.? There is a marker that shows as a "dot" on the graph.? Press the left button and the marker frequency goes lower. Press the right button and it goes higher.? I think there is also a way to move the marker with the touch screen.? I don't immediately recall the rest of the VNA settings.? Probably there is more than one way. On Monday, November 4, 2024 at 03:26:37 PM PST, Christopher AI6KG <ch@...> wrote: What AA6PZ said.?? In practical terms, find a frequency where the reactance is between 25 to 100 ohms, and do the math.? ? To take the math a step further: Z = 50?Ω?. (1?+ S11) / (1- S11).? ? ? ? The real part is the real part (ohmic). If the imaginary part is positive, it is inductive, and the imaginary part is jωL. And if it is negative, it is capacitive and the imaginary part is 1/jωC. Some VNA's??you this directly.? ?NanovnaSaver will: 73 de AI6KG toggle quoted message Show quoted text On Mon, Nov 4, 2024 at 2:49?PM Paul AA6PZ via <aa6pz=[email protected]> wrote: Simple Use the nanoVNA to measure impedance. Take one of the following formulas and a little algebra to solve for C or L. ? ? On Monday, November 4, 2024 at 02:41:07 PM PST, Doug Hendricks <ki6ds1@...> wrote: Christopher,? how do you measure capacitors and inductors with? a nano vna?
Ron, N6YWU All Messages By This Member #10179 A nanoVNA has a USB serial port. ?You can type commands into its serial interface to make the nanoVNA dump the frequency and IQ data from the last scan as plain text. ?See: ? Maybe I do things the hard way; but I plug the nanoVNA into my Mac, open up a serial terminal app, command the nanoVNA to do a scan, dump the data, and use some simple scripts to reformat this text data into CSV files for spreadsheets, or "touchstone" files, or plot the data as either a Smith chart or an SWR graph. 73, Ron, n6ywu

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