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Hi all,ive just upgraded my lenovo tab to android ver 7.1.2,the nano web app installed ok but when i try to open it i just get a blank white screen,any ideas?,thanks in advance.

Hugen, Hurt, I received my NanaVNA-H4 today and I can confirm the upper half blocks the USB. I filed away the upper rim. I did not want to force the USB cable into the receptacle fearing the stress

Thanks Herb. None of my units will connect. Will try the on-line and see what happens. Would be nice for field use though with my phone. Merle

This is a good tip. Just remember that the feedline is only a multiple of a half wavelength at one frequency. If that's the center frequency of your antenna then the impedance at the end will be the

Thanks for the responses. The trick of using alt + left mouse only allows moving the window down. There's also a mini-menu if you right click the title bar of the panel with some promising sounding

Quite a collection Merle, Are either of your other two NanoVNA's able to connect to your Samsung Galaxy 8+? If so, then the nanoVNA-H4 should be able to connect by the same means. If not, then the

Oh! I should add, just for completeness, 1. After the antenna is matched (near 1:1 SWR) feed-line length doesn't matter (up to the point where matched-line loss is significant), and 2. Wind coax thru

On Mon, Jan 20, 2020 at 12:16 PM, David Eckhardt wrote: " I have no problem with AliExpress…" ==================================================== If you prefer AliExpress then you might try the

Received my H4 today and excellent packaging. Two issues surfaced almost immediately. 1. H4 would not connect to my Samsung Galaxy 8+ with c to c cable provided. Using the VNA app from cho45. 2. The

It's a USB C-port, the unpolarized type.? Very tiny pins, very close together.? I have the connector but not the ability to solder it in. Bob

I just measured Depending on the frequency 50 +/- 3 ohm Well centered -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files Erik, PD0EK

Old-timer trick: A half-wave (and multiples thereof) of feed-line will "repeat" the feed-point impedance at the other end. Take your frequency, and the velocity factor, and determine length of a

Try this: - attach the nano to the problem pc and turn on in dfu mode - open Devices from the control panel - delete the nano usb device AND its driver that is showing it's in dfu mode - turn off the

It's a common problem. Search this forum for "STM device in DFU mode" using the Search box at top of page. For some reason Windows sometimes replaces the driver "STM device in DFU mode" (for DfuSe

Thank you so much for your patience with me! I wasn't able to get that to work on my laptop, however I tried a different computer and updated the nanoVNA without issue. So now I'm wondering if I need

Even before the Chinese New Year, I cold not get my order paid. The 'error' message, rejection of my credit card, reflected they would accept only a back transfer and displayed the instructions. I

Even before the Chinese New Year, I cold not get my order paid. The 'error' message, rejection of my credit card, reflected they would accept only a back transfer and displayed the instructions. I

delete the wrong line Right-click to see the delete option. then try DfuSE programming again.

Bob, Your unit that had the USB connector come off - was that a micro-USB or a USB-C part? Thanks,Larry? -? not Mike ;-)