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Yes. This issue has been reported before (posts #3096, #4533, #6288 etc.) Supplied nvna battery spec is here...

I think it's 3.1 based on the "V3.1" that appears under the battery. This one was purchased directly from nooelec on 10/12/2019. I don't know what the differences are between versions, nor am I aware

Darn, I just tried it, and failed. Everything appears to be installed if I follow the messages. Same old story, NVNA-S complains about pyqt5 or pip. Install the required. Console tells me they are

Hi All In the NanoVNA-saver the calibration settings, when doing a female calibration with the supplied NanoVNA calibration kit, where the male SOL parts are fitted to the FF adaptor, need some

Runs OK for me with Debian 9 and XFCE, but I did follow the installation instructions and carefully installed all the recommended support. [email protected]> wrote:

A few months ago I managed to get nanoVNA-saver running using the instructions on Rune's Github page. This was on a Linux Mint 18.3 machine and Cinnamon. Then I had a catasrophic PC failure, known as

Just for info, I *AM* reading all this with interest, and still formulating my thoughts. Just a lack of time here, I can't devote every day to the same thing. It's day will come when I can start to

Beware that some eBay alternatives, e.g. from directimports1899, are wired incorrectly.

Alan, Thanks for the additional info. I understand what you're doing there, and can easily put the circuit in SimSmith and play with it. However, the original poster (Andy) indicated an interest in

A blue bridge can be rewired to work: * unsolder all coax wires near OUT * measure resistances from Input center pin to DUT and REF - should be ~ 50 Ohms but are probably ~ 100 Ohms - short resistor

Thanks. I had a blue one on order but have a green one on order too, now. At least they're cheap !

Hi Adrian - Blue are bad clones of transverters-store design and are wired wrong.

Looking at the datasheet I'm wondering if I am not mixing up two devices. Can't find anything there. Bridge design was a the green ebay resistive 3GHz bridge module driven through the REF and DUT

Why is a green reflection bridge better than a blue one ? (Presumably it's not just a matter of preferred colour ..)

Gabriel, Nice analysis. It will be interesting to see what actual changes make it into hugen's upcoming pcb modification where he intends the bring out the UART interface lines for users to experiment

Thanks Larry Jos Op 18-11-2019 om 20:23 schreef Larry Rothman:

Gabriel Did you take into account the fixed time offset between the + and - outputs of the ADF435x? I could not get good bridge balance but this was in a experimental setting -- NanoVNA Wiki:

Hello, There is a trick that is used by people that work on particular frequencies for example in power microwaves 2450MHz.(oven-people) They use a lambda/4 line at that frequency with a typical 50

Hi Herb, at that time, during the further development of EU1KY AA, DH1AKF conducted frequency extension experiments where the bridge circuit levels were modified. Simultaneously, he modified the

Group members who are into hardware experimentation might be interested in trying some of the latest improvements reported by Pmax65 at, " https://github.com/hugen79/NanoVNA-H/issues/14 ". He is