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Nizar, In my other post I mentioned that the NanoVNA measures the actual impedance and gave several screenshots that were S1

I’m confused - does firmware version 1.2.40 display this properly or was this corrected in the new beta version Roger mentioned? Tony [email protected]> wrote:

I did visit my local radio club last night (despite having a bad back) to view the said book, and frankly I was very disappointed. The section on measuring antenna was very short. I didn't learn

Port-Z is analogue of this https://coppermountaintech.com/help-r/port-reference-impedance-(z)-c.html Or search Impedance Renormalization

Hi Dislord Thanks for response, but wondering why S11 impeadance measurement seems to include also port2 input measurement what can explaine this strange displayed impedance of port2 , i assume

Hi Roger , i am agree with you , when setting 50ohm-->77.7ohm and measuring with S11 Smith function an external impédance we have always the correct impédance value displayed as expected no

The impedance of port 2 is also recalculated to the specified value. And it is assumed that S22=S11, S12 = S21

No. You can buy a paper version through the RSGB as I did because it was only ?2-3 more for the paper version and I find it’s less hard on the eyes than it is on screens. I would assume that it

???? so it's only for kiddle viewing? bummers!! Mike C. Sand Mtn GA

The displayed impedance remains the same regardless of the system impedance setting if the firmware does the calculation correctly. See my earlier screenshots. Roger

I did not intend to change the measurement, only the displayed value. The measurement is unchanged. Dave - W?LEV [email protected]> wrote: -- Dave - W?LEV

The measured impedance will NOT change when you change the system impedance in the Menu. DiSlord has made some changes to the firmware since this function was introduced and I recall this made some

This is incorrect. Changing the system impedance will NOT change the measured impedance value. It only changes metrics based on Zo like Smith Chart plot, Return Loss & SWR.

In doing so, you have reassigned the center of the Smith Chart to 77.7 ohms. Therefore, even if your are measuring a matched 50-ohm resistor, it will read 77.7-ohms. Set it to 200 ohms, and a 50-ohm

Hi all something doesn't seem to be working very well, the most recent firmware 1.2.40 of DiSlord installed on SEESII H4, I really appreciated the characteristic impedance conversion function for SWR

Southeastern VHF Conference 2025 Announcement & Call For Papers Quality Inn, 3095 Wilma Rudolph Blvd, Clarksville, TN 37040 April 4th and 5th, 2025 Papers and presentations are solicited on both the

? If you draw a band between 51,5 and 48,5 ohms over the graphic you will see that the sensibility of minimum SWR point is very high , then with coaxial impedance variations this frequency would

As such, there is no R/X chart. Using the Smith Chart and the cursors, you can read the R ± jX at the top of the screen at the frequency of the cursor. The complex impedance can be expressed either

Thanks for taking the time to fully answer my question.

Please read my previous post. I upgraded the firmware and found it. I was just suggesting that the getting started guide needs updating. If you read this it does not mention the SD card.