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I think you need to explain "doesn't seem to be working." Does that mean that when you turn it on, absolutely nothing happens? Likewise, explain "don't get any results." Nothing appears on the screen?

Luis, Yes, it should also work with an UNUN. A caveat: It should give a low VSWR (high return loss) when properly terminated. --John

... saving me the cost...

By the way. This case was an especially a good deal for me because it was just a short 20 min drive from the store for me to go pick it up,swing m the cost of shipping. I also picked up some cheap BNC

The Nanovna-saver program has an issue where you can try and calibrate it and it doesn't work. Make sure you use the "calibration wizard" in the nanovna-saver program under the. You will soon learn to

P.S. The tubing was placed back over the stylus and the the assembly was held in place while running the beads of hot glue. This provides for proper alignment and acts as a heatsink for the pieces of

The attachment for the stylus is two pieces of 3/8" heatshrink tubing I shank down around the stylus. The tubing can then be loosened for a good fit by rolling the stylus between two hard surfaces.

Scan for 10MHz to 500MHz. Your antenna is probably too long and will not show on the 140-150 MHz scan. WO4ROB ________________________________ Sent: Wednesday, May 20, 2020 1:38:05 PM To:

Hello. Let us ask, please, two "rhetorical" questions, which are addressed to all readers of this thread: - Is there anyone, ever, wondered, in any similar to this, under discussion, case - that is

I ran a test case with a 4:1 xmfr after adding resistive loss to the xmfr. A plot of return loss (from s11) and then transmission loss (from s21) is provided. Looks like 1/(1-|s11|) where S11 is

Hi John, Do you agree this will also work with an UNUN, shorted to ground?

Yes. If we are trying to measure the so called TRUE INSERTION loss... |S21|. And the vna has a reasonable dynamic range, then we could build an appropriate MINIMUM LOSS PAD. It would provide a match

Hello again Alan, Thanks for the detailed answer. I had to google for the design, I have found this website: https://www.electronics-tutorials.ws/attenuators/passive-attenuator.html I have made a

The loss relationship should be written as 1/(1-|s11|^2)... Need to check, is this a valid form for a passive transformer network?

Here is some info on the MFJ cal loads suggested by W7ZQ. Says rated to 1 GHz. - really? Roger

Check the calibration load of 50 ohms.

Seems like I got errors very much like that when I installed on Mint 19.3 Cinnamon. However, I am still able to start and run it by navigating in terminal to the nanovna-saver folder and entering

Hi Luis. Your query stated BALUN. However, if an UNUN, then a simple R pad, either PI or T with a Z value that matches the UNUN transform ratio is required. The method in either case requires a

My VNA doesn't seem to be working but occasionally, I can get a reading on it. Thinking that it might be me, is there a way to reset the nanoVNA back to it's delivered format, in case I have done

Very nice. The stylus holder is a great idea. Thanks for sharing. ---? Ciao baby, catch you on the flip side?? 73 de W3AB/GEO ??? http://www.w3ab.org You can say "over", you can say "out", you