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The Buy American Act probably falls in the exception: "the items to be procured or the materials from which they are manufactured must be present in the United States in sufficient and reasonably

Order from R&L Electronics: * https://www2.randl.com/* No connection other than ordered quite a number of Chinese electronics including the NANOVNAs and TinySAs / Ultra. My credit card issued on my CU

I placed a lot of orders on AliExpress over several years, including the NanoVNA, TinySA, etc. Most of the time it worked fine. Until recently! AliExpress sent my last three orders through a little

I have found that blocks of Styrofoam are excellent for this use; polystyrene is a pretty good dielectric and the foam is 99% air so even better. 73, Don N2VGU

hi Daniel, maybe this can help: https://nanovna.com/?page_id=121 best 73 de i2NDT Claudio

Hi Arun, I can vouch for Mini Circuits transformers. I had Mini Circuits build some custom 100 Ohm balanced hybrid splitters for a VDSL broadband startup project in Australia. We used 100 Ohm Cat5

Hello Mark, I do not pretend to be an expert here, but I will make a few observations. 1. Many posts in this group have already noted that connecting a NanoVNA to a computer via USB cable results in

Echoing what Dave posted, I agree it would be best to physically locate Nano VNA at the antenna feed point. This could be physically dangerous or impossible. And how to view or save the measurement? I

Unbalanced antenna should have sufficiently large ground plane to minimize impact of transmission line. Objects near the antenna can change characteristics of the antenna. Such as people and things in

Yeah, indeed... so onto question 2... anybody in the US want to build one that can be sold to federal agencies or federal contractors? It involves some paperwork if haven't built for them before.

Highly unlikely. Are there any US manufacturers building anything in the way of "consumer" electronics?

I have used the NANOVNAs quite successfully to test 300-ohm and 410 to 450-ohm balanced lines at HF. The size of the NANOVNAs is small enough to not have any (extremely little) influence on the

Hi Mark- What's causing the data to change when you plug the unit into the USB cable is the fact that adding the USB connection causes that USB cable (and whatever else it's connected to) to become

I can vouch for the quality of Mini-Circuit products, I have used them in MIL SATCOM projects. 73, Don N2VGU

Connect the VNA over Bluetooth serial. You can buy the adapters for a few $. How to attach the adapter has been discussed a number of times here.

Already understood and thanks. Maybe a better question is: Is there a method to isolate the VNA from the PC when connected via the USB to kill (choke?) the effect. I am just experimenting and learning

I would suggest one of the small transformers made by Mini-Circuits. You can get both the unbalanced to balanced transformation and 50 Ohms to XXX per your needs. I have been using their 50-75 Ohm

Yes, I understand. My test are in the MHz not GHz. That is a period and not a comma, but yes I get your point. Will do.

Has anyone used a NanoVNA to characterize a Twin wire twisted Balanced line like say a CAN bus line or an ISO-SPI balanced 120 ohm line? If so what interface hardware has been used or is recomended?

Howdy, Are there any US Manufacturers building/selling NanoVNAs? I am on a project that is regulated by The Build America Buy America Act and NDAA889 Laws which unfortunately make the linked purchase