开云体育

Confirmed and looks ok... Mitch. Assume that your layout is such that the inductors are ideally non coupled to each other, ideal each at right angles. The connectors are panel mount? Soldered their

Great. Give a few moments to run a check on what we should be seeing.

Here's the filter I built. Laid out on copper plated board. Capacitors are all grounded on the copper ground plane. Thanks. Mitch NK3H

Please post a schematic of your filter. Assume it is designed to operate in a 50 ohm system.

I've searched through the message list looking for symptoms similar to mine and didn't find anything. I'm somewhat new to this and would appreciate any help you can offer. I've been trying to get my

1 Hour... Good info... Excellent Intro.... Time well spent.... From R&S. https://event.on24.com/wcc/r/4871656/262AE419BBD73FA413BB90B6EEB73F0D?partnerref=mid_28133_na_m4c_inv-vna

I would return it. Alternatively check with the manufacturer if your unit is genuine and that their warranty policy is. [email protected]> 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? [email protected]> 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