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Here's the same 1:1 choke being measured on the NanoVNA.

Hi Herb - "<76800H" must match 153600 == 320 * 240 * 2 == nanoVNA screen size in bytes Anything which breaks those "magic" numbers will also almost certainly break more in this script. Bit shifts must

Thanks Chris, I?ll try to install the biggest possible one that fits well. El dom., 27 oct. 2019 a las 9:58, Chris Weiss (<cweiss@...>) escribió:

Chris Weiss wrote: --------------------------------------------------------------------------------------------- One user who wanted a larger battery solved the thickness problem with additional

No reason to dilute the other threads on this topic. This is the latest article on this subject from the people at Maury Microwave. Another worthwhile read. The link below takes you direct to the

Doing a manual optimization using openC0=300e-15 F openC1=-250e-24 F did result in an reduction of the amplitude variations (blue lines, see attached picture) Changing shortL0 seemed to have a similar

Oristo wrote, "I do not know why my most recent 'screenV.py' works for me and fails for you; perhaps because different Python conglomeration..."

In an older post,(I now fail to find), Kurt explained it is possible to use, after calibration, a long high quality coax to test and improve the correction factors of the calibration standard. So here

Here's some AIM4170D results for 9 turns RG400 on 2xFT240-K toroids for comparison.

I cannot order at TaoBao :-( I get the following message: Original: 根据相关地区法律法规及淘宝网政策，该商品无法运送至您所在的国家或地区 Google translate: According

Keep an eye out for thickness - You've only got ~6mm to work with between the two PC boards. You may also need some double-sided tape or hot glue to hold the thing in place. -- -Chris

Hi Nan, SimSmith can be used to predict figure of merit difference between 52 and 43 11T on 2X 240 cores. K is similar to 52. Attached is a plot. Little difference above 14MHz. 43 somewhat improved

.. except nanoVNA storage limitations. Things like this are better attempted here: /g/nanovna-f

Hi Warren - On recent firmware, this works up to the point of trying to display CH1 in SMITH format. Small horizontal excursion to OSL occurs for SCALE 1x but becomes only vertical for e.g. SCALE .2x

Nothing to stop you - the source code is available to allow you to drive a different screen. As long as the resolution remains the same it should not be too difficult. With a touch interface there is

The figure you are primarily interested in is the S11 Resistive component when the two wire ends of the choke are connected across CH0. You can also measure it as S21 by connecting the two wire ends

This is an important 'Gotcha' that catches out many people when measuring antennas. They disconnect the feeder and measure the antenna at the feedpoint, then wonder why they get unexpected results. If

Hi Nan- Sorry, I use scripts to directly read nanoVNA S11 and S21 values by shell commands I suggest that you search the current NanoVNA Saver topic

Hi Nicholas, I wrote a short script (using Matlab 2018b) when I first got my nanovna to see if I could talk to it (and probably I cobbled it together from code I found somewhere else on the internet

$ python --version Python 3.6.6 $ pip freeze certifi==2019.9.11 numpy==1.17.3 Pillow==6.2.1 pipenv==2018.11.26 pyserial==3.4 virtualenv==16.7.5 virtualenv-clone==0.5.3