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On 10/6/21 3:36 AM, msat via groups.io wrote: > Hello everyone! > > RF newbie and first time poster here. Recently purchased a NanoVNA-H for a specific experiment I'd like to perform. Without going

Hello everyone! RF newbie and first time poster here. Recently purchased a NanoVNA-H for a specific experiment I'd like to perform. Without going into the unnecessary details of the experiment itself,

Your radios/equipment might look good if cleaned ;)

Since the transducer/speaker is small with an even smaller opening, you can open the case and place a piece of masking tape over the opening. That will greatly reduce the level.? On Tue., 5 Oct. 2021

Interesting.. maybe it doesn't handle reflection coefficients with mag > 1 or something. That could easily happen if it's uncalibrated, since it's just returning reflection/source, and the gains of

As I mentioned earlier the calibration routines in NanoVNA Saver depend on having calibrated input over a wide range from the NanoVNA according to Rune. This may be because the algorithm used in Saver

G'day all, I have the F version 1.0.3 up and running. Is there any way to disable the audio when the VNA is turned on and each time a calibration button selection (e.g., Open, Short, Load)? I hope so

So that really does push one to say "NanoVNA-Saver" should send a "cal off" command before sweeping, if you're doing cal within NanoVNA-Saver.

I create this case for my 4 inch nanoVNA v2: https://www.thingiverse.com/thing:4727705 it contain stick holder, and box for calibration kit, not big.

Thanks DiSlord for explanation, I understand. Op di 5 okt. 2021 om 20:13 schreef DiSlord <dislordlive@...>:

Difficult implement fast vector interpolation on this CPU: NanoVNA measure real imag, for convert it to Z angle need: Z = sqrtf(real*real + imag * imag) angle = atan(real, imag); // here more

Hello DiSlord, Should the interpolation not be based on radial interpolation: so average of modulus and average of angle? All things here are complex numbers, so I think that we should also do a

Better do one calibration or on NanoVNA or on CPU side Calibration data contain noise, this noise added to calibrated value (increase noise), after send to CPU and use as basic calibration in CPU

I was referring to interpolation between points. If you calibrate with 401 points between 1 and 1.5G on the device and then calibrate with 2000 points on PC, all those in between values are

That's useful.

Well, as a substitute for "no calibration" which isn't easy to command, if the wideband cal is stored in #0, it has the advantage of "power cycle and you're in a known state" I'm not sure what the

Challenging but doable, you will have to use "Shunt through" method. For an easy to understand explanation of the problem: https://www.youtube.com/watch?v=1UbEz73FGCU

in my firmware need use: 'scan start stop points mask' mask - output mask #define SCAN_MASK_OUT_FREQ (1<<0) // Output freq in Hz #define SCAN_MASK_OUT_DATA0 (1<<1) // Output complex S11 #define

If I understand correctly this will lead to interpolation by Nano firmware which is not a good idea.

What commands make the NanoVNA send uncalibrated data?? I was casually looking around, and it seemed to me that you can turn off calibration with the menu, but there's no command that you can send