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Check your scale. Upper left shows swr of over 7 ( or something like that. Hard to read on my phone).

For THRU calibration Ch0 must be connected to Ch1. Suggest you read this excellent document...

Hi folks, I need help to know if my newly bought (few months ago) VNA V2 Plus 4 from Tindie is good unit or not. When any antenna connected it do not draw the SWR graph. I am sure it is a good unit

Hi Larry, Found the issue. It was a Windows Driver Issue. Many thanks to KB5QR and his post in this thread!! /g/nanovna-users/topic/34550986 Mark NO8J

Also, please browse the forum's Wiki for additional info

Sounds good, Jim. ... eleshop.eu, which I linked to earlier today, is one of the recommended sellers so unless some kind of new information shows up before tomorrow I'll buy that one. ;-) Jesper

You could always buy an inexpensive one, as long as it has return privileges, try it, and if the software doesn't talk to it, send it back. They're all pretty similar? - Both in terms of circuitry

Yes, the unit is definitely in boodmode and no it doesn't show up in Dfusedemo. That's why I'm puzzled I'll look throught the messages. Thanks Mark

Hi Jim ... Yup, also a good suggestion ... I have actually sort of tried this (on youtube, in relation to his PDN video), however, he was not able to help with this. I suppose there are some different

On 2/28/22 9:53 AM, moensted1@... wrote: > @Alex: Thanks for your suggestion ... I am actually aware of the Analog Discovery, however, its usable band-width is too low for my purposes. Also,

@Alex: Thanks for your suggestion ... I am actually aware of the Analog Discovery, however, its usable band-width is too low for my purposes. Also, its intrinsic noise level is quite high thus not

If you see the unit is in bootloader mode, did you run Dfusedemo and see if it shows up in the upper left area as being in bootloader? There are a number of messgae threads from just over a month ago

@Jesper, Another thing You might give a try with all this decoupling networks measurements might be "Analog Discovery" from Digilent, which covers frequencies from DC to 25 MHz. Though not very clear

I have had this NanoVNA-H4 (nanovna.com) for a little over a year now and just saw that there are firmware upgrades. It came loaded with Version 0.5.0 with a build date of Feb 21, 2020. I am having no

Ok ... Looks interesting and probably also challenging in different ways than what I am working on ... Thanks for partly settling my curiosity ;-) Jesper

that was for a Software Defined Radio that was part of the SCaN Testbed on ISS https://www.nasa.gov/directorates/heo/scan/engineering/technology/txt_scantestbed.html

@ Jim : Thanks Jim for considering & commenting. I think I will try it out then - possibly with a JFET probe in-between the PSU & the VNA to see if there are any differences between the end of a 50

On 2/27/22 12:07 AM, moensted1@... wrote: > Hi all - many inputs and much to consider - but thanks! I'll address your feedbacks in sequence below: > > @Jim : Thanks for commenting above and

Hi all - many inputs and much to consider - but thanks! I'll address your feedbacks in sequence below: @Jim : Thanks for commenting above and also your setting up/linking to your ADC interference

No. JoeSmit software works with the original (H), V2 and the latest with LiteVNA.