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Hi Frank. Give the 3 step procedure outlined in the middle of my rant a try. LOL! It works reliably, and will suit the G5RV requirement you outlined… coincidently similar to the one I happened to

A good exercise is to use your VNA to measure the very high unloaded Q of Toroid? coils.?I have good success with J. Oppenheimer's KN5L method for toroids with Q up to 230 using a single turn sense

I expect that the short and load in all cal kits included in the NanoVNA suffer this problem. When you mate two RF connectors you should *always* rotate the nut, and *not* the whole body of the

Needed 3 hands. Had the Nano hanging from the cable and trying to hold it to move the markers. Good Idea though

Take photos with your phone? Peter

While we are on this subject [BTW good rant Gary :-) ], do we really need that many save and recalls in cal and setup? Cal some of that memory be freed up to save a "display state? I was making a

Now stay grounded gang... especially if you feel your NanoVNA is nothing short of junk because it falls short of meeting your routine anddemanding avocational requirements.

Has anyone sorted out device state interactions between CALIBRATE->DONE->SAVE and RECALL SAVE? Supposing that one applies RESET before CALIBRATE: - then DONE->SAVE n might store only calibration

I am not talking about calibration. THE CALIBRATION BY WHATEVER METHOD YOU DESIRE IS NOW DONE. Complete. Now we desire to measure some components. We are now in a position to use the NanoVNA as a

When I needed to make up a bunch of baluns for HF I did two things, first I made as nonreactive a load as I could, in that case 300 ohms, by careful construction using carbon comp resistors, and then

I am not a fan of calibrating with an impedance load that is too high. This is a limitation of the design. Theoretically we have a wheatstone bridge. 2 legs are 50 ohms and one leg is fixed at 50

How about running a cal with a known higher impedance load? Would that give a better chart? I don’t think you would need super accuracy for this application. Peter

After you get comfortable with the calibration process you may want to consider measurement of components whose |Z| is much greater (or smaller) than 50 ohms. Grab a couple of known parts out of the

Yes this will be good but most software assumes lossless cables so that? you can deduce the antenna Z from measurements from the shack end. The equations are there for the lossy cable cases but I

Yes indeed. Your instrument is only as good as your cal kit.Penzias and Wilson found 0.04dB couldn't add up in their microwave noise calibrations. They won the Nobel Prize for that for discovering the

My top end was set to 900 MHz with the low end being 300 kHz. In my chart I showed SWR at 900 MHz as that is the highest the NanoVNA goes. The 8753 goes to 3 GHz but that has no relevance to the unit

Knowledge: https://youtu.be/BdsfFGDmklI I also second the TDR :D

Why are you starting at 900MHz? I would start from 1MHz and scan upwards and see how the magnitude and phases change as you increase frequency or equivalently how they rotate on the Smith chart. There

I will perform some more measurements. One issue is that I only have a N male OSL (on a 7mm to N adapter on the VNA) so the BNC and SMA loads have to be via adapters. They are precision ones but are

You read my mind, Mike - I second the TDR function! Maybe the next version of the NanoVNA could also have a broadband noise source to act as a pseudo 'tracking generator' so we can do additional swept