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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

Or a UHF to SMA adapter (the 1/2" isn't important) and use your existing SMA cal standards.

You can flash the Nano with an ST-Link interface. I bought one for $3 from Aliexpress - works great: https://www.aliexpress.com/item/1005001638056242.html Also avail on Amazon. I had a similar issue

Get a set of female SO-238 Short, Open, Load calibration ends, and calibrate at the end of the coax which will attach to the antenna. 73, Ken N8KH

No luck with a new USB cable, still showing up as "Unknown USB Device (Device Descriptor Request Failed" in device manager. I'm wondering if the firmware can be flashed via serial somehow? I think I

Thanks, I will try a new USB cable and the Zadig app. I am mostly positive the correct drivers are installed, so maybe forcing the new drivers will help.

On 3/4/22 7:43 AM, Miro, N9LR via groups.io wrote: > In HAM world, one of key uses for nano is antenna tuning, or at least better understanding what my TX is going to see. > > Very rarely we get a

In HAM world, one of key uses for nano is antenna tuning, or at least better understanding what my TX is going to see. Very rarely we get a luxury to connect nano directly to antenna feed point over

First off, Thanks to all that responded. Further checking on #2 VNA gives the same results; Smith Chart showing a solid 50 Ohm load with No Inputs/Cables connected to S11, on HF / VHF / UHF

Hi Ron, Thank you for the tip. Someone also suggested same as you said. But there are few other things and until I do not go through them its not going to show the graph properly. I tried changing the

Hi Nick, Thank you for your reply. I already gone through that user guide that you are referring to. As you see I mentioned in my post above but obviously missing some important steps. I got some