开云体育

I would return it. Alternatively check with the manufacturer if your unit is genuine and that their warranty policy is. gmail.com@groups.io> wrote:

I got it from an auction site called nellis auctions. They sell surplus amazon merch. I have called them and they are will to return my $$ upon return of defective unit. But cannot exchange it for a

Thanks, looks like this is the only answer I got. Where could I get a more definite answer? This should be mentioned somewhere, in a documentation or in gitlab. :/

I managed to get it work with v1.2.40 firmware from DiSlord and the DfuSe Demo software. Initially I was using the wrong path to update the firmware, essentially uploading instead of updating, like in

Hello everyone! I managed to brick my nanoVNA H (clone, as I've found later on this forum) and now it is showing a white screen. First of all, I should have read this forum before the purchase and

Yes, use ZeeTK, the new version firmware will perform an LCD clear during the boot process and the color stripes will disappear after boot.

You might start with stating where you got it from? gmail.com@groups.io> wrote:

So i have in front of me a brand new in package/container: a brand new -f v2 All metal housing, protective plastic on screen. Upon start. Turn on. Screen flashes white then goes dark. Very faint lines

I have NanoVNA-H version 3.6.1_SM_ST. I had 1.2.27 (20.02.2024) from the factory. During startup I had dashes, colored stripes on the screen. I downloaded new software from hugen79 in version 1.2.43.

Hi I think a 12Khz IF offset should be kept at default value and forget it , it gives the optimal Harmonic ratio filtering with the RC 1sft ordre low pass filter in the Hardware of nanovna 73's

I am learning about RF and antennas and I want to understand how do I figure out how much the IF offset is, in NanoVNA-H4. I could not find any article explaining how to check if the default IF

I first used a VNA when I was in Engineering within a National Broadcasting Network (CBC) and we used it for optimizing our transmitters and antenna systems. As a Young engineer it was an eye opener

Hi All, In the post title it says "what am I missing ?". Well, I now know what I missed - tapping the "Done" key when calibrating ! I am so used to calibrating my DG8SAQ and Sark 110 VNA's that I

YouTube is your best friend! Matthew KD6KVH

It is a very powerful and useful device despite its size and cost. I have used mine for many purposes including using the TDR function recently to troubleshoot a feed line/antenna problem of a local

I got my first Nano VNA yesterday, a friend who used to live 10 miles away, now lives 1000 miles away bought it for me along with jumpers and adapters. Today I set up "presets" for 80, 40, 20, and 2

QUOTE: You will do far better to connect the right most antenna and collapse it *** Because the other two antennas shown in the image will not work well if at all on 433 MHz. The extendable

Hi What Smith measurements given with the reference load, the short circuit and open terminaison ??? It can help to better understand what can be the issue 73s Nizar

Hi Donald, Thanks for that, it was pretty much what I was expecting, and ties in with what I am getting with my DG8SAQ VNA. I am also using a silver mica capacitor with about the same lead lengths.

Hi Stewart, Out of grins and giggles I took a 470 pF silver mica cap which actually measured 454pf using smart tweezers. I then just used a test jig with my NanoVNA which was a white plug in