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With the antenna that close to the VNA, ferrites are a must at both ends of the connecting coax. Install ferrites and move the antenna structure several wavelengths away from the VNA. Also, for an

A better picture would help. Seems like your ground plane is tiny compared to the radiating part. And its hard to see but it looks like your ground plane is parallel to you radiating element. Both

Looks like your feedline is radiating and your USB connection becomes part of the antenna. Try using ferrites over the outside of the RF cable right at the antenna to decouple your cable.

The email is K2RMA <at> arrl.net 73s Marco

Hi, I try to use NanaoVNA for measuring a vertical ground-plane antenna at 170MHz for later impedance matching. A picture of the test setup is attached. Connecting NanaoVNA to USB affects the

[email protected]> wrote: If you intend using the unit without a PC attached, I would get one with a larger screen, rather than the standard screen. Dave. Dr. David Kirkby, Kirkby Microwave

On Fri, Nov 29, 2019 at 04:30 AM, Dejan Corovic wrote: So is there a seller on UK eBay or Amazon that you bought before and he wasn't selling fakes?

The known official store of Hugen is here https://www.alibaba.com/product-detail/Hugen-NanoVNA-H-New-item-Original_62342877955.html The other sellers on ebay, aliexpress, amazon, etc are usually

Agreed. So is there a seller on UK eBay or Amazon that you bought before and he wasn't selling fakes?

Owen cannot compare a $10k VNA against a $50 one I am happy with the cheap and cheerful H version for basic understanding and experimentation To expect lab grade performance is ridiculous John ve3ips

I second Don's question. Email?

On Thu, Nov 28, 2019 at 06:14 PM, Dejan Corovic wrote: This guy is really going deep into NanoVNA-H, finding some problems ================================================================ Yes Owen is

The author of those articles Owen Duffy is very knowledgeable and I have learned a lot from reading his blog. Sadly he has a penchant for criticizing others and this detracts from his posts. What he

This guy is really going deep into NanoVNA-H, finding some problems https://owenduffy.net/blog/?p=16058 https://owenduffy.net/blog/?p=15996 https://owenduffy.net/blog/?s=nanovna

Dejan, Could you reference where you read that the NanoVNA-H is full of hardware issues? The reason I ask is because the NanoVNA-H is hugen's latest release of the original NanoVNA and the only

I want to buy NanoVNA but I am confused with so many vendors and versions of firmare. I would like to buy on UK eBay so I can return it if it's clone. I read about most recent version NanoVNA-H that

How to email you? the email address is blanked out after @.

When will the V2 design be manufactured and ready for sale? Any name yet for the product?

Gentlemen, what you have at https://github.com/hugen79/NanoVNA-H/issues/14 Noise improvements. Outlined in found that the power input at the mixer ICs is lacking capacity, causing spikes and spur at

Free (in the USA) diodes available for battery indicator I have 99 "extra" 1N4148WS diodes available. If you want any, FOR FREE IN THE USA, send me a self-addressed stamped envelope and how many