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If calibrated for amplitude at spot frequencies using nanoVNA, then could some SDR (e.g. SDRplay has Android API) be useful for spectrum analyses?

What amplitude (dB) and phase (degrees) resolution are credible for nanoVNA? I read e.g. 0.1dB and 1 degree for other VNAs for amateurs..

Would it be wonderful if there would be, next to the nanoVNA, a nanoSA or nano Spectrum Analyzer? Well I decided to test what the most simple SA could look like, just good enough to test the harmonics

I agree. This is a mess and hard to follow. It should have been a forum from the beginning. Suggest that since this project and others like it will continue into the future, that a forum should be

Hi First test with the lab card. I'm a little worried about the contacts on the lab card

Many VNA receiver ports do NOT precisely match 50 Ohms; inserting a precision attenuator before CH1 improves matching. nanoVNA bridge and ICs are nominally designed for 50 Ohms; I don't find a nanoVNA

Did you mean that user will be able to enter offset delay for open, short and load and specify C0 for the open? I can try to add it at least for C0. Regarding to the delay offset, I'm not sure on how

Hi Dave Re hashtags: You can use whichever you prefer, i.e. email client program or web interface. A post can have more than one hashtag. Subscribers can mute a a certain hashtag if they prefer, e.g.

Does that mean that users would need to use the groups.io website, and be unable to post from an email client? If so, I would stop posting anything. I fully agree that the traffic is too high. I wrote

thanks, this is all helpful. I found through a few different evaluations of the info I was getting, a range of R, that got me in the ballpark and made tuning the circuit fairly painless (if anyone

I just released 0.1.1: https://github.com/mihtjel/nanovna-saver/releases/tag/v0.1.1 This version adds a first version of an analysis mode, which will analyse low-pass, high-pass and band-pass filters

For those who may be don't know, my software mod can be found here: https://www.rtl-sdr.com/forum/viewtopic.php?f=4&t=4881#p12354

Hi, this is not really new, but very helpful for 80m DX: I had a W3DZZ that had a sharp response in the center of the (EU) 80m Band. But CW or SSB DX is at the band ends. Before (blue curve) the W3

Hi I all for using hashtags. A group on groups.io can be set to require hashtags and also that only the owner and moderators can create hashtags. The latter might be a good idea too.

That's why I configure 'no-email'. Now I am using web browser only. But... I can not BLOCK anymore self promoting 9+ line signature salesman. sigh...

When there's too much traffic from a group I switch to a daily digest. I then only read the messages from the groups.io website. Although I may miss something useful I don't have to wade through

From: Roy Appleton So that's what's going on. From the email readers point of view it's a mess! Roy WA0YMH ======================================== 100% agreed, Roy! An unnecessary duplication, and a

Thank you John for answering/addressing my question. Tried an air cored inductor, and the S21 attenuation was increasing almost linearly with frequency 1-300 MHz. So, as you said the the ferrite core

Looks like it to me! Just double the price but you can get them in 3 days not 3 or 4 weeks! ? Roy WA0YMH

Using the twitter web page you can do the translating, never used the app, as this social media is too addictive to put on my cell phone ;-)