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If you have successfully measured numerous inductors, you are also set to measure the variable capacitors. They are both a source port (S11) measurement. Connect the same as you did for the inductors.

Hugen. Thanks for your thoughts. Your point about the demands of new firmware is important. I wish it were easier to get hold of your original product here in the UK.

Larry, thanks for your very detailed responses. I will try to upload two phots of the PCB of my unit (apologies for the phone camera quality). People can use them to make informed choices about their

Hello One walk around. Get a known inductor. Put unknown capacitor in parallell See what frequency it resonate C = 1/(L×fxf) Regards El jue., 16 de septiembre de 2021 7:38 a. m., Joe WB9SBD

OK, I wandered the group site for a long time and went to the HOW TO on the wiki site, Nothing helped me. I have the steps for measuring an inductor down solid. And have probably done a hundred by

Since the STM32F303CCT6 is currently difficult to order, some clones may be replaced with some inexpensive processors. Earlier versions of the NanoVNA-H4 firmware, which allows only 101 scan points

Stephen I found the functional block diagrams of both F302 and F303 series processors, if you're interested. Again, a lot of the chip's internal functionality is not used. The F303 was originally

Larry Rothman Thank you for your thoughts. I was unaware that the full functionality of the MCU was not needed. Personally I take the view that if a manufacturer attempts to replicate a product in

That is an unknown clone. I've never seen that processor in one of these before BUT that doesn't mean it won't work. The nanoVNA only uses about 30% of the internal peripheral ability of the chip

I purchased a "NanoVNA-H4" from Amazon in the UK. The brand is Hima, supplied by ANGLO CT. I purchased from Amazon to try to avoid delivery delays and unexpected import costs. I opened the back of the

Compensation for the delay is part of the normal calibration. You only need to set the delay separately to compensate for a cable or connector length that can't be part of your calibration.

witch pin do I check and what should it read? Wayy too small traces for my multimeter so I have to go lend some smaller stuff tomorrow.

you need check output switch u551, see v2 scheme

nope. does not matter if the frequency is 3mhz - 6mhz or 140mhz - 455 mhz or full scale etc... Always the traces are all around the place.

Your device work in < 140MHz? Check work in < 140MHz on V2 and V2Plus firmware If work, problem in ADF generators or switches

not sure how quoting works here but @Larry Rothman From the link above. I installed the v2.2 firmware. The one that is not sold anymore. Problem is still the same Then I installed one above it (v2

Valinire in previous post said to use the following for the s-a-a-2 One is the comm port and the other is the firmware Here is the links

Config-version only displays the version of FW you installed into the device. If you installed plus FW into a non-plus device, you will see 'plus' on the version screen. So - you need to install the

Config - Version says NanoVNA v2 Plus. I just tested ALL the firmwares listed on that site I linked. 2 of them did not work at all, 2 were super slow and rest were working but still with my problem.

Are you sure you have a plus version? The firmware for regular V2 and V2Plus is different (but work, not good work).