Re: We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD
On Thu, Jan 9, 2020 at 11:16 PM, <hugen@...> wrote: We are still selling through Alibaba, and bulk purchases will be even more favorable due to postage.
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hwalker
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#9378
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Re: We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD
On Fri, Jan 10, 2020 at 07:33 PM, Dr. David Kirkby, Kirkby Microwave Ltd wrote: > > LOn Fri, 10 Jan 2020 at 07:16, <hugen@...> wrote: > > This version was ported by Ken Liao (AA6KL). You can
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Hugen
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#9377
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Re: We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD
David, A few of us have made purchases using Paypal. The procedure is to leave a message with Maggie King at hugen's Alibaba store that you want to use Paypal. She will send you her Paypal email. Once
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hwalker
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#9376
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Re: RF Demo Kit Testing tutorial released
Hello Klaus, Your Smith chart 8.png of test field 8 (470 nH) shows at low frequency an Open. That can not be correct. To verify your calibration please test: My Smith chart in diagram
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Rudi
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#9375
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Re: nanovna that continues to indicate 50 ohms when S11 is open
You can help people helping you by posting some picture. Steps to take: 1: Go to calibration and do a reset and just to be sure switch the calibration off. (did you switch it on after doing your
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Erik Kaashoek
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#9374
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Re: NanoVNA-Web-Client, problem with Chromebook
We already have reports of a Linux distro with dependencies on a specific Python version that is incompatible with NanoVNA-saver. While running multiple Python versions is possible, screwing things up
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Oristo
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#9373
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Re: We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD
LOn Fri, 10 Jan 2020 at 07:16, <hugen@...> wrote: This version was ported by Ken Liao (AA6KL). You can check the following Can you send a *PayPal invoice* to someone so he can pay via PayPay?
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Dr. David Kirkby, Kirkby Microwave Ltd
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#9372
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Re: nanovna that continues to indicate 50 ohms when S11 is open
That very much smells like bad calibration, which I get far too often. Watch Smith display during calibration. It will generally be incorrect, but should change between open, short and load.
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Oristo
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#9371
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Re: RF Demo Kit Testing tutorial released
I've measured with the VA5. The measurements are the same.
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Klaus W?rner
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#9370
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Re: NanoVNA-Web-Client, problem with Chromebook
NanoVNA-saver is written in Python.? Gallium is based on/compatible with Xubuntu, and Python is available in the Ubuntu repositories.? So, I would assume that NanoVNA-saver would run just fine under
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Jim Allyn - N7JA
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#9369
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We started selling nanoVNA-H4 using STM32F303CCT6 and 4-inch LCD
This version was ported by Ken Liao (AA6KL). You can check the following links to learn about the development process. /g/nanovna-users/topic/33107519
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Hugen
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#9368
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Re: nanovna that continues to indicate 50 ohms when S11 is open
Loads are good. When I calibrate my nanovna-f with it everything¡¯s works perfect. Just to be sure I have measured them and they are correct.
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Colin Dexter
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#9367
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Re: New version of NanoVNA-Saver: 0.2.1
Hi Rune, Thank you very much for the wonderful nanovna-saver software. Python isn't my forte but I managed to install it on my Debian laptops without much of a hassle (Python3.7 was already installed
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Marcel Post
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#9366
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Re: NanoVNA-Web-Client, problem with Chromebook
Does NanoVNA-saver run O.K. under Gallium? - Herb[
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hwalker
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#9365
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Re: Measuring resonance from coax far end.
You won't need any patience, it's amazingly simple.? Like drop in an LC element between two impedances, and it automatically calculates appropriate values to match.? Tell it you want a high pass
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Jim Allyn - N7JA
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#9364
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Re: NanoVNA-Web-Client, problem with Chromebook
Have not found anything on the net that indicates Android apps will run under Gallium. Anbox, which "puts the Android operating system in a container" runs under various Linux distros, but the
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KI7MWA
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#9363
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Re: Measuring resonance from coax far end.
Thanks Hans for taking the time to explain your methods. I have been doing a lot of testing with my Nano since I rec'd it at the end of August. The s1p formatted data has been most useful. I mainly
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WB2UAQ
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#9362
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Re: NanoVNA-Web-Client, problem with Chromebook
Yup! I have an old Acer C710 with Gallium Linux installed. Opened the Chrome browser under Gallium Linux, enabled the experimental web thingy in chrome://flags, loaded the NanoVNA Web Client...then I
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KI7MWA
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#9361
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Re: A strange S11 from a amplifier
#circuit
#tutorials
#general_vna
166 ?H is a pretty large inductor and likely has a pretty low self resonant frequency. Try 'de-Qing" the inductor by parallelling it with a 4.7 k to 10 k carbon resistor. If those work, increase the
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W0LEV
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#9360
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Re: NanoVNA-Web-Client, problem with Chromebook
entilleser via Groups.Io wrote: GalliumOS for the Chromebook isn't trying to run Android apps under ChromeOS. It's a full and fairly robust distribution of Linux which is either available as a boot
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N9KDY
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#9359
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