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Hi Bob, welcome to the group. There are a number of references in the FILES and WIKI sections. You can also do a search of key words from the many posts that have good info. Note - there are several

After discovering the Nanovna I decided to order one. A short introductory discussion formed on AMFONE.NET, which mentioned this group, so I decided to join. I’ve been reading through the posts and

One useful reference for the 12.09 dB is the article of Ken Simmons W3UB : A bridge method of Sweep-Frequency Impedance measurement. QEX May 1986, You can find it on the internet archive.org site. The

A small group of us are in the process of writing a calibration procedure for this instrument so please standby. As well, it will include a basic intro to the fundamentals of the VNA. Thanks,

Yes for filter measurement the S21 port gives transmission loss and can be calibrated by a direct link for it. However the instrument is capable of thru line 2 port measurements and by turning the DUT

Here is the unit connected to a filter showing the filter response. Peter

The Tx port (port 1) is a? port that "sends" a signal and looks for a reflection (the arrow returning back to itself) this will give you RETURN LOSS. The Rx port (port 2) "receives" a signal (the

Google : Error correction in Vector Network Analysers by Thomas Baier DG8SAQThere you will find the Agilent? and HP references too, outdated unfortunately. I had to hunt around a few years ago, but

I’d be interested to see those references and also the HP app note numbers. DaveD Sent from a small flat thingy

Hi Guys, I the attached pdf of any use to you? 73's Pete ZL2iK

Yes, one place I last saw that was a 1986 copy of QEX on the internet archive. I will try and dig it out for you. It's quite easy to work it out yourself too.Sent from my Samsung Galaxy smartphone.

South of France actually. I think a 3 point measurement is only very basic. You can do better with a 12 point,? ref: Agilent appln notes. Well with your equipment you should see that as a challenge,

Sure Alan. The proper calibration of a vna is a 12 point method. It takes work and good quality dummies. Agilent and HP have detail application notes for these. So did Dieter Baier who wrote up a good

I only use to one connector, could someone please explain to me how these both work and what the arrows mean. Thanks.

Do you have any reference source for the 12.09 constant? I have never heard of that before and could not find anything in the literature. I don't doubt you, but I would like to know how that

See my message 469, Alan

I published my findings on the standards multiple messages in the past. I have the white unit and the black and again as I reported the black kit was supplied with significantly better RTL. If I

Then, given Thalus, you are somewhere between London and Berlin...... LOL OK... got it. Yes I did misunderstand you. I think we would find that as the RL numbers go past -40 dB their accuracy also

No you misunderstood me. I am only saying that if you have s 50dB load the nano is capable of returning that number consistent with your Spectrum Analyser RF bridge measurements which is impressive

It would be interesting for those with accurate meters to measure their loads supplied with their nanoVNAs. I am measuring 51.4 ohms with an AN870 meter. This was a white gecko purchase. Not great.