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I find the TDR method to be quite accurate. NanoVNA Saver works quite well. However all these methods need an accurate Velocity Factor (VF) input. The VF of an actual cable will often differ by +/- a

I can't remember where I got it. It might have been in a previous post in this group. Roger

Just click "Display Settings" and then select "Show Lines" Then select your line width and dot size. See attached screenshot. To import into Excel just create a .s1p or .s2p Touchstone file. Import it

Save it as a s1p or s2p file.? While not precisely Excel, they are close enough - use convert data to columns Here's a sample # HZ S RI R 50 50000 0.3278822061648298 0.0003739103343315503 248313

Make sure that "Show Lines" is checked in the Display Settings.

Does anyone know to improve the plots? They look faint and grainy. I tried averaging over several sweeps to no avail. They are barely visible on screen. Also how do I export the data file to Excel

Nice chart, Roger. What is the source? If I were to guess, I would say from a professional VNA unit. Thanks Brian D KF6BL

One thing you might try is to charge the unit overnight. Then open the case and then disconnect the battery by taking the connector off the board. Wait a minute or so and then re-connect the battery.

On Sat, May 28, 2022 at 09:02 AM, Brian Donaldson wrote: > > I also notice that by changing the STOP frequency, the value of length > changes. Minor but still there are changes. Do you have a

I use Dr. Gudinuf's method. Saver says I have a fault at 4 meters out. Ahah, the remote switch isnt working right.If Saver says the fault is at 46 feet, A hah, the squirrel has been nibbling again.If

I see in the image that K=70%. That seems to be the default when doing a reset of the unit. I find myself doing the test with the known length cable and getting a wrong value. Then I realize that the

I keep both of my NanoVNA (-H and -H4) up to date just to keep them up to date. I don't think using an older version for basic functions will be an issue. However, These updates, obviously, are to

Transform method use steps (distance between points) depending from points count / start / stop / velocity Example on H4 401 points, start 1M stop 1.5G step = 54,7mm So you can`t get result between

I have been playing around with some 75Ω cable about 5' in length. I am using, for training purposes, both the Transform/Linear method and the Measurement/Cable method. I find that each method gives

Hi , the problem was the reflection at port S21 , the possible calibration with the nanovna isn't a full 2 port . You may be attenuate this problem inserting an attenuator ( 6 or 10 dB ) at the port

Thank You! ________________________________ Sent: Friday, May 27, 2022 3:21 PM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] "running" line at top of the screen My

My NanoVNAs are still running the original firmware they came with more than a year ago. Enjoy and be happy.

As I newly picked up a NanoVNA-H Rev 3.4 is it so un usable that you MUST upgrade them or are they still useable without upgrading? What New features are available by upgrading them. Thank you, Chuck

Manfred, the problem is that I'm not designing this circuit, just trying to get it to work more reliably. I did get an email from Steve, AK4R that pointed to an article by W8JI on techniques to clean

This item surfaced on the -F forum recently. My $0.02 USD on it ;-) While I agree with the usefulness of the feature, I find it both distracting and difficult to see under all circumstances. It could