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Re: Question about Measurements in Smith.
Ditto. I really don't understand why the NANO's do not display real and complex values for the impedance. Jim, I just stick with basic units: Ohms, Hertz, Farads, and Henries. Simply utilize the
By W0LEV · #27098 ·
Re: Question about Measurements in Smith.
Thanks for that reminder, Herb. In the latest V1.1 firmware, the smith chart format is accessed in the menu tree under "Marker" / "Smith value".
By Stan Dye · #27097 ·
Re: Question about Measurements in Smith.
On Mon, Mar 7, 2022 at 09:31 AM, Antonio (EA7HJ) wrote: "I have always used the Smith's Chart with the standardized values of the R¦¸ +/- jXXX impedance. In the NanoVNA H4 the measurement makes it as
By hwalker · #27096 ·
Re: Question about Measurements in Smith.
To display the re/im directly on the nanovna screen, you can choose two other traces, and format one of them for 'real' and one for 'imag'. Then as you move your cursor across the smith chart display,
By Stan Dye · #27095 ·
Re: Question about Measurements in Smith.
X = 2*pi*f*L X? = -1/(2*pi*f*C) If L in nH and f in MHz, then X = 2E-3*pi*f(MHz) * L(nH) if C in pF and f in MHz, then X = 1E6/(2*pi*f(MHz) * C(pF))
By Jim Lux · #27094 ·
Question about Measurements in Smith.
Hi I have always used the Smith's Chart with the standardized values of the R¦¸ +/- jXXX impedance. In the NanoVNA H4 the measurement makes it as R¦¸ + XnH or R¦¸ - XpF. My question is how I can
By EA7HJ - Antonio · #27093 ·
Re: "Zero calibration" (or "no calibration") question
Very good assessment, Roger. The 269 was designed during days when the PIC was king. While it does a lot of functions, it¡¯s not easy for the end-user to cal. You Kits as a company can¡¯t keep any
By Frank K4FMH · #27092 ·
Re: "Zero calibration" (or "no calibration") question
Roger, Thank you for the detailed explanation. I and others appreciate the time you took to answer my question. Dave K8WPE David J. Wilcox¡¯s iPad
By David Wilcox K8WPE · #27091 ·
Re: Nanovna-H4, looking for a case this will fit in.
I designed and 3D printed a case and sleeve. The design is free to use, copy, modify as you so wish. https://www.tinkercad.com/things/5RlbLJ3FPHG
By John · #27090 ·
Re: "Zero calibration" (or "no calibration") question
Thats insteresting Thanks Martin N6QLH [email protected]> wrote:
By Martin Glazer · #27089 ·
Re: "Zero calibration" (or "no calibration") question
The NanoVNA is a two port Vector Network Analyzer that is capable of much better accuracy than any of the other devices you mentioned. It is also a more complicated instrument with more features. The
By Roger Need · #27088 ·
Re: Red LED
Mine is different Mine flashes while charging, and then turns a solid red when fully charged. The light going out makes no sense to me. How would you know the difference from fully charged, or it lost
By Joe WB9SBD · #27087 ·
Re: Red LED
Thanks for all the replies. The red light finally went out after charging for another 4.0 hours, so I guess it is fully charged now. Apparently in my unit, "Red" means charging and no LED means "fully
By Tom C. · #27086 ·
Re: Red LED
Hello Tom, the NanoVNA-H rev3.6 red LED is on to indicate charging and off to indicate charging is complete. The charging current of NanoVNA-H rev3.6 is about 250mA, and it may take 6 hours to fully
By Hugen · #27085 ·
Re: "Zero calibration" (or "no calibration") question
Fransesco, Thanks for the site and reminder. Dave K8WPE (also a geriatric memory at 77) David J. Wilcox¡¯s iPad
By David Wilcox K8WPE · #27084 ·
Re: "Zero calibration" (or "no calibration") question
https://www.qsl.net/kp4md/mfj202.htm Please read this page: *On the "OLD DAYS" the calibration was necessary like today you needed to balance the bridge (this came from my geriatric memory).* *Sent:*
By Francesco · #27083 ·
Re: "Zero calibration" (or "no calibration") question
Can someone explain why my YouKits FG 01 and RigExpert A600 (and even my old MJF 269) analyzers don¡¯t need calibration every time I use them compared to the NanoVNA? What is the difference in the
By David Wilcox K8WPE · #27082 ·
Re: "Zero calibration" (or "no calibration") question
Your requirement appears to be incoherent. Initially you said: Now you're saying: The answer to your in
By Roland Turner · #27081 ·
Re: "Zero calibration" (or "no calibration") question
There are numerous articles and videos available which discuss why a VNA requires calibration. A quick Google search will provide articles in whatever technical depth you want. I suggest that you just
By Roger Need · #27080 ·
Re: Red LED
The LED should flash red while charging, and stays on steady red when fully charged. 90 min of use may not have discharged it very much. wrote:
By Stan Dye · #27079 ·