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Hi Rune, thank you very much for the improvements made to the NanoVNAsaver application. If not too demanding to accomplish, you would like to be able to define multiple segments, for which you can

I measured the CH1 RL with a professional VNA and got this values: 100MHz 36dB 300MHz 28dB 500MHz 23dB 700MHz 20dB 900MHz 17dB Measuring UHF filters would benefit from having a better termination

Hi Tom, good suggestion! I'll have a look, and there should be plenty of room for it! :-) -- Rune / 5Q5R

Hi Pete, you don't need to reset the NanoVNA calibration - it probably even works better if you don't, in that the data received from the NanoVNA will not be rejected as mangled during data

Hi Rune, Thanks a lot for your work on NanoVNA-Saver. However it would be great to have averaging option in the standalone firmware too. It should be easy to do, i just need to find some time to get

Very interesting work, Erik. Maybe what we need is to use two separated Si5351 to avoid LO to stimulus leackage. They are cheap!

Here is the CH1 ADC input signal analyzed with a FFT for both 50MHz and 2.099GHz, both with cable connecting CH0 and CH1 (thru) and without any connection (isolation) The phase noise of the SI5351 is

Hi Rune, I have made a large number of routine impedance measurements using your V0.0.10 exe binary under Windows 10 Pro 64b. I have not encountered any stability problems and in general think it

A |S21| measurement is reasonable. However, the signature for a lossy choke should also be apparent in a S11 measurement. So take a short length of #22 AWG enamel wire and tie it across the CH0 port

Dave, The minimum energy to cause damage has gone way down over the years as transistor geometries have shrunk, but I don't know specific values. When I started doing chip design, the state of the art

Coil coax around a ferrite and connect the outer shield for a S21 measurement. Loss in S21 = choking :) typical ferrite for line noise choking is #31 (also for top bands 160m - 80m). #43 does a great

Wondering if anyone has tried to use the nanoVNA to evaluate the properties of the clamp on ferrite chokes that are employed to reduce radio frequency interference (RFI) being emitted by wall wart

[email protected]> wrote: Thank you. I was unaware of that. Perhaps that’s why my 8720 says no ESD on the front panel. However, the test ports on that are no 50 ohns a

Hello, We just uploaded the currently available version of /F/L/O/S/S/ Maxima code: https://www.op4.eu/code/derdei20190923.7z as well as, the currently available version of its documentation:

Why is a rubidium standard at 10 kHz offset from the carrier at 10 MHz that noisy? Is the phase noise floor shown limited by the test set? Regards, Alan

Dave, 50 ohms to ground provides some protection, but often not enough. The standard human body model (HBM) for ESD testing is 1500 ohms in series with 100pF. The 1500 ohms is supposed to represent

Hello Rune, Again thank you for your perseverance with the nanoVNA PC Software you are bringing us all! It is very much appreciated. However I have a question regarding Calibration using your

Here is my RF-bridge measurement. I have blue RF-bridge with two installed jumpers. I'm using more standard RF bridge measurement method: 1) Open CAL menu and calibrate OPEN/SHORT/LOAD as usual 2)

Thanks for the Wiki links, they help understand what's going on

Thanks to the pointer on the specific edition on the antenna handbook, it was an easy find on ebay