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The NanoVNA is a two port Vector Network Analyzer that is capable of much better accuracy than any of the other devices you mentioned. It is also a more complicated instrument with more features. The

Mine is different Mine flashes while charging, and then turns a solid red when fully charged. The light going out makes no sense to me. How would you know the difference from fully charged, or it lost

Thanks for all the replies. The red light finally went out after charging for another 4.0 hours, so I guess it is fully charged now. Apparently in my unit, "Red" means charging and no LED means "fully

Hello Tom, the NanoVNA-H rev3.6 red LED is on to indicate charging and off to indicate charging is complete. The charging current of NanoVNA-H rev3.6 is about 250mA, and it may take 6 hours to fully

Fransesco, Thanks for the site and reminder. Dave K8WPE (also a geriatric memory at 77) David J. Wilcox’s iPad

https://www.qsl.net/kp4md/mfj202.htm Please read this page: *On the "OLD DAYS" the calibration was necessary like today you needed to balance the bridge (this came from my geriatric memory).* *Sent:*

Can someone explain why my YouKits FG 01 and RigExpert A600 (and even my old MJF 269) analyzers don’t need calibration every time I use them compared to the NanoVNA? What is the difference in the

Your requirement appears to be incoherent. Initially you said: Now you're saying: The answer to your in

There are numerous articles and videos available which discuss why a VNA requires calibration. A quick Google search will provide articles in whatever technical depth you want. I suggest that you just

The LED should flash red while charging, and stays on steady red when fully charged. 90 min of use may not have discharged it very much. wrote:

You can turn calibration off and it will use no slot. But there *are* variations between units. At least between the two I have.

I am a new owner of an Aursinc NanoVNA-H, HW Version 3.6 Charged it for 4 hours out of the box, but only RED LED solid. Used it for 90 minutes matching mobile HF antenna; seems to work fine. Now to

I think we all agree with that :). My question is how to make it more useful (or easier to use) without breaking the bank. I hope the answer is to have a feature request for one of future releases

It is always a good idea to watch the behavior of the various calibration standard traces as you perform a calibration; you can spot an incorrect or damaged standard or poor connection just by the

It's a specific tool. One must use that tool as intended or it is no longer useful. It takes seconds to perform a SOL calibration at the S11 port. Perform a wide spectrum SOL calibration and save that

If you're using PC software - it's a file. Definitely the problem. Who me? Never do that. No way. :)

The point of Kenneth's (rightful) response was "calibrate each of your coaxial runs to antenna, recall that later. With more then 4 antennas that's not possible due to nano's limit to slots On the

Once you do an SOL calibration at the nano pigtails, over your frequency range of interest, save it to memory 0. The nano initializes to this when you turn it on, so you don't need to repeat the SOL

Easier said then done :) * have limited number of calibration slots * don't have an easy access to measure some of coaxials (previous installations, difficult to lower antenna, helping a friend, ...)

This VERY interesting - difference between measurements with calibrated vs non calibrated varies from just a fraction (1 or 2 db) to sigificant (10db and more). If I understand correctly, your