开云体育

Hi Bryan, this sounds easy to implement. I'll put it in the next version. :-) -- Rune / 5Q5R [email protected]> wrote:

Hi Rune, Thank you for this great software for the nanovna. I appreciate the 3 different markers which are available and you readout a lot of good information in the boxes to the left of the graphs.

I have one of those blue pcb return loss bridges from Aliexpress. Mine has the resistors correctly bridged. Directivity was measured: 10MHz 55dB (take this number with a grain of salt) 144MHz 39dB

Hi qrp.dd Incorrect, that is not a measurement of the CH1 input impedance. The cable between Ch0 and Ch1 create impedance transformation. You need to calibrate at the end of the test cable with a

Hello hwalker, Thank you very much for this useful application note. I very much welcome the fact that not only the measuring setup was described in detail, but also the measuring result was evaluated

Hi Carlos, like Herb said, the latest version of NanoVNA-Saver was due to include averaging - it does now :-) I saw what seemed like significant improvements in readings from data point to data point

For those waiting for new binaries: I just published 0.0.11 :-) This release brings averaging as a new feature: Press "Sweep settings" to select between running a single sweep (of optionally multiple

Yes. - Andy -

Torbjorn, Google looses things in translation at times and traces in English come out as tracks in other languages. Below is a Google translation from one of the Russian boards. "He poured the

I believe the point that Dave Jones was making, is that the surface resistance of the mats does not have any adverse effects on 99.99% of the measurements one makes. I don't think his aim

Carlos The nanoVNA has about 5 to 10 dB headroom in S21 in alle ranges. This is done by adjusting the gain off the amplifier before the adc to the frequency range Biggest concern in overloading are

What is the difference between traces and tracks? Some firmware are said to be for 2 tracks or 4 tracks. In the Nano you can choose to show different traces. Is it two words for the same thing?

I'm playing with rather more exotic HW, a Tek 11801 & SD-24 TDR head which is a ~26 ps rise time TDR evaluating the quality of Chinese RF connectors. But the principles are the same and I'm very

On Sun, Sep 22, 2019 at 06:09 AM, Mario Vano wrote: CORRECTION: (I mistyped) - The multi-band dipole is my 20ft high 40/20 meter trap dipole that has been augmented with parallel dipoles for 15 and

Very interesting site, much to study in depth to learn more about VNA and CALKIT. I suggest inserting the link on the wiki page Maurizio

Carlos, Rune's next release of nanoVNA Saver will introduce "Averaging, including truncated mean. First version. " I am interested in seeing how users who have been requesting averaging for the

On professional VNAs, stimulus source is calibrated for flatness on factory with a bolometer. On nanoVNA you can't control stimulus output power, so we should probably calibrate the audio codec gain

It's been my experience what I've had problems with a vendor that they beg you to give them a positive report if they fix the problem. And generally they will jump through hoops to do it. Have a

David, For your reference here are the FFT's of the audio signal from CH1 while connected to CH0 at various frequencies. 50 MHz, 299MHz, 1200MHz and 2100MHz, all with offset of 4kHz Next the isolation

I use this SW for many tasks and interface via the HPIB bus to load calibration tables for my VNA(s). There are tips and application notes and excellent information at this site. The SW is free down