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Ward, if you have something that I can beta test on my NanoVNA H4/V2plus4 I‘m very willing to do that Uwe.

If i correct understand problem in loaded from NanoVNA start/stop range? NanoVNA Saver not correct do this if not detect VNA: Here this code: def _get_running_frequencies(self): ''' If possible, read

That is a quirk with Saver when it can't detect the version of NanoVNA. Disconnect / connect fixes it on occasion.

The same behaviour, on a quick test, appears under firmware 1.0.53 DiSlord, nanoVNA Saver 0.3.8, running Python 3.7 in a PVE on Ubuntu 18.04. If the latest DiSlord firmware would seem to deal with the

Thanks Barry. It seemed like an excellent job to me for my low knowledge. This has clarified issues that I could not understand. Jose EA7GAH

Original NanoVNA 2.8" screen https://github.com/hugen79/NanoVNA-H/releases/tag/1.0.45 Linux Mint 19.3 Python 3.7.5 NanoVNA Saver 0.3.9 When NanoVNA Saver connects to device Sweep Range always defaults

Thanks again everyone! I've watched several of W2AEW's videos but hadn't seen this one yet. 73, David, K2DBK k2dbk.com twitter: @k2dbk

David, I have been following this thread and thought I might add something that might help you. This link that I have attached should give you an easy way of making your Short/Open/Load standards

When you go to put a connector on the open end, make sure the center conductor of the cable is flush with the end of the center contact on the connector. Trim the outer cover, shield, and dielectric

Note that the calibration standard can be any value BUT the reference impedance (impedance for S11 being 0) remains 50 ohms. Allowing you to set the calibration impedance simply frees you from the

I've used 30w Caddock noninductive TO-220 package resistors for this kind of thing, but they *are* a few bucks each. You're probably better off just buying some cheap metal film 50 ohm resistors and

Thank you for the info. I’ll update nanoVNA connect when I get home. Ward Ae6ty

Thanks for all the replies. It sounds like for the frequencies I'm looking at, there won't be much of a difference no matter which method I use. @Lou W7HV: Could you point me to where I could pick one

Hope, We have this video again. Luis T.

On 7/16/21 8:12 AM, Zack Widup wrote: > I found this fascinating. I need to make an attenuator for my FT817 on > transmit as a 432 MHz > microwave IF radio. I have the appropriate carbon-film

I found this fascinating. I need to make an attenuator for my FT817 on transmit as a 432 MHz microwave IF radio. I have the appropriate carbon-film resistors. I measured them on my NanoVNA to see what

It is important to remember that "accuracy" and "precision" are two separate characteristics of any measurement. DaveD -- This email has been checked for viruses by Avast antivirus software.

The need for calibration and how frequently, varies with the measurement. If you need great precision, like accurately measuring a 40-db return loss, you might need to carefully calibrate several

I always do the calibration with the NanoVNA by itself, not connected to a computer. I have saved several band segments that I frequently use (say, 45 to 55 MHz, 140 to 150 MHz, 420 to 450 MHz) with

That doesn’t address the point.