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Hugen, I noticed on the new NanoVNA-H4.2 PCB there is an unpopulated silk-screened area labeled "CARD1". Does that imply that a SanDisk card is in the works for a future version of the NanoVNA-H4?

On Sat, Jan 11, 2020 at 01:45 PM, Kevin B wrote: So I just dropped mine and the screen only turns on, nothing is displayed. Does anyone have an actual web link for a replacement?

Hi Dave, Yes, you are right: There are good examples when we don't want or need perfect conjugate match by design (or whatever other) reasons. No matter, if we need it, can use it, or want it or not,

So I just dropped mine and the screen only turns on, nothing is displayed. Does anyone have an actual web link for a replacement?

Gee, it would sure be nice if some of the firmware upgrade instructions actually mentioned that you need to reset the threshold level. :-)

Hi can some one compare the 4" Nanovna V Nanovna-F, Good and bad points, not just the cost, Thanks Dave 2E0DMB

Those who ordered anything from China recently, be aware that it's soon the Ney Year's Holiday (rat year) so orders myy be delayed. Cheers, David -- SatSignal Software - Quality software for you Web:

I ordered the 4” yesterday from Hugen’s Alibaba presence and Maggie emailed me a PayPal invoice at 8:01 Saturday morning her time. Her reply to my payment did not come back to my personal email

Yes, Express.? No acknowledgement of the order yet...maybe they do not work weekends ;-) 73 Glen K4KV

Looking forward to your review. Did you order with express shipping? Roger

Perhaps, the displY can wait till the actual measurements were made and logged for display. This might help a noise reduction due to display drive signals.

Ok, great. If you are trying to look at the pass band insertion loss response while at the same time the rejection response, dynamic range may very well get in your way. If that sort of measurement is

Jim, I use Linux Mint 19.2 Cinnamon on my Chromebook and I believe I had trouble running nanovna-saver because qtxcb was missing. Try installing it with "sudo apt install qt5dxcb-plugin" and see if

an other suggestion: http://www.gunthard-kraus.de/fertig_NanoVNA/English_NanoVNA%20V1.5._final.pdf

Dig further back into the matching system. In our modern transceivers, the match begins at the collector / drain of the output devices (the PA). There is typically no attempt to do conjugation at that

After you get it installed, you can make a shortcut by right clicking on the desktop and select "Create Launcher here" I just called mine NanoVNA Saver and browsed for an unused system icon. The

If so, then this is a bad solution to the problem. A photo.

I'm using 19.3 Cinnamon myself. If I remember correctly, I had to install a few dependencies first. Try this first sudo apt install python3.7 python3-pip python3-distutils python3-setuptools

Good morning Alan, I did as you suggested, I know where the issue is now. I neglected to take into account the dynamic range of the instrument. The filter is a 40 meter filter down -78 dB so I was in

Filter response is very dependent on terminations. Higher load Z than filter designed load will increase coupling between filter elements, widening bandwidth and usually increases loss. Lower load Z