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Hi all, why blame someone for complaining controversial RL signs !? Keep cool, please. Yes, Return Loss has been an issue and some use it in a wrong way. This caused Trevor S. Bird, former IEEE chief

Probably someone tried to measure amplifier with this nanovna and it's CH1 input is burned out. Another possible root of cause - incorrect channel setting for trace. In order to check, do the

NanoVNA-Web-Client includes some Android app source. It is being actively developed, with automated build tools and even unit tests: https://github.com/cho45/NanoVNA-Web-Client/tree/master/android Has

Thanks - add it to the console command doc. ...Larry

Dry solder joint maybe? Saw some people had issues with the SMA-connectors not soldered properly [email protected]> wrote:

@in3elx Hi Rob, the files you are looking for are here:

Yes it works sometimes.? The SWR display is particularly erratic.? But even when it works, it's only temporary until it decides to shut down. The unit hasn't been abused.? I am impressed when it

See here for a possible solution http://www.chibios.com/forum/viewtopic.php?t=868 [email protected]> wrote:

Yes, calibrated fine. S11 works fine. With a direct cable between the ports, I get the noise centered around 0dB. Removing the cable, the display is exactly the same. Inserting an attenuator, there is

Thanks for the clarification Erik, With everything Rune has on his plate I'd hate for him to waste his programming efforts on something the firmware does not implement. Usually all save commands come

Hi, windows does not recognize the port, how should I do?

My unit has developed a problem I can't solve.? It is intermittent.? Sometimes it works well but then it gives me a gratuitous reboot or shuts down and then isn't working.? I recalibrate a few

Have you calibrated it? If you connect a fly-lead between port 0 &1, what do you measure ? And a 3dB pad?

I found the progam DfuSe_Demo_V3.0.6_Setup.exe, but it's a demo. Are there any limitations? Is there a document that explains the update procedure for those who have never done this? Thanks

Hi all. I am new to this group. I recently bought a nanovna off Ebay. It's a black one, set up for 900MHz and 2 traces. It will not measure S21. All I get is noise at +/-10dB peak levels. S11 works

I agree, return loss should be a positive number, and I can remember endless debates in our engineering-team about it, but when you tune filters on a Network analyzer, it is nice to have the insertion

Hi, For filters the steepness of the skirts is important apart from the 3dB bandwidth. -6DB and -80 dB are a real measure for the skirts! However ,many filters ( or measuring conditions ) are not

The current firmware allows dumping the internal calibration table with the data command data [0-6] where 0: S11 1: S21 and 2 /* error term directivity */ 3 /* error term source match */ 4 /* error

a link about measuring filters http://na.support.keysight.com/vna/help/latest/Tutorials/Pass-Band_Measurements.htm

In my own experience coming from a R&D environment, we would specify filters with the -3dB and -60dB (theoretical) points, but for production and customer tests, AND specifications, we would only test