开云体育

A DC source has no complex portion and is not characterized by impedance, only the real term in the R ± jX. Further, if no current is drawn from the source, the presence of the R term isn''t there.

NanoVNA-H/H4 contain free pins named as Rx and Tx (you can see pcb or scheme) Exist connection modules like HC-05 or HC-06 It allow easy connect any device vs UART port over Bluetooth, device need

Pardon my ignorance I assume yours is software only solution. ( I did not read your posts in detail - so forgive me if it is there ) I see few posts "solder wire to ...." and I would prefer NOT to do

I was thinking about how to make full two port measurements.? The easy way is to get a coax transfer switch.? But given how cheap the NanoVNA is (i.e. less than the cost of the relay), what about

How connect /g/nanovna-users/message/17758

You can use my firmware, it allow connect to PC over any Serial TTL module HC-05 or HC-06 Or use any WiFi to TTL Search this forum for more info

When I joined this forum - abut a year or so ago - I also started my CAT bluetooth project. Hence I asked few questions about if there are any plans to add bluetooth to nanoVNA. I actually went as far

I cheat - I run nanoVNA-saver to find the "port" . After few hick-ups I am getting pretty familiar with nanaoVNA-saver and it really does not bother eif it was written in Python HI HI

It can be even twistier than that. Win10 re-enumerates every time you plug or unplug a device, any time you (re?)connect with RDP, any time any USB device goes to sleep or wakes up, and probably other

When your PC boots it should re-enumerate all the USB devices. In Windows, you can force this in device manager (and there used to be a command line technique, as well, but I don

Thanks for your reply. As I understood the question, the transformer was to be added as an aid for measurement. Yes, if it is part of the original setup, it would need to be included in the

Success I got NanoVNA-H PS Is there a way to edit posts ? (More -> more ??) Or am I stuck replying to myself?

Thanks, sure explains few things. As I just posted elsewhere, I am ignorant about my toy version. ( And I am NOT taking it apart to find out... and I was just kidding about taking Polaroid of screen

Which breaks horribly if your source has very high or very low impedance - Consider a DC power supply.

connect to it as a serial terminal, and send the "info" command or? "version" command info – prints firmware info on console. Can be used to verify F/W build date. - This is similar the Version

My favorite question , not directly related to nanoVNA Why is having minimal SWR important ? Optional answer: SWR is an indicator of IMPEDANCE match between x and y devices - directly related to

Forgive me if I get clumsy, but I am still trying to adjust to this forum. AT this point I am not concerned whose version I own. What bothers me - when the silly gizmo powers up I get a flash of info

Both companies came from the same people. They are the same. I have ran Deepelec firmware in mine for almost 2 years now with absolutely zero issues. I tried the latest version by sysjoint for $hits

Now I am a firm believer in KISS concept. There is nothing wrong with "show and tell " as you propose it. To be of practical use I assume you are going to use resonant antenna @ selected frequency.

An overall high level block flow diagram being "identical" does not mean they are "identical". In the RF world, since line widths, spacings, routing, vias, etc are all variables, I wouldn't assume