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Re: Provide feedback and recommendations to developers
PLEASE only give feedback on what is supposed to work but does not. Don't submit hundreds of new feature requests as there is only one hugen79 and one edy555 (ttrftech) Github can not be used as some
By Erik Kaashoek · #6466 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
That detuning should be investigated; I suppose it depends on match between nanoVNA and antenna. For antennas typically using a balun to feed coax, then nanoVNA should have the same. Perhaps running
By Oristo · #6465 ·
Re: Chasing ghosts??? #internals #calibration
Rotations are mostly by cable delay, and I guess that differences from 180 degrees between rotations for open and short measurements are provoked by non-ideal open and short calibration
By Oristo · #6464 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
Hi Andy, I cannot support your last statement: That UTP cable is just as much detuning your antenna by common mode current as feeding the antenna by coax without balun would do. Common mode current
By DJ7BA · #6463 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
Hi Wes, can you send me a screenshot? There shouldn't be any problems fitting in 900 pixels vertical space, unless you're running a lot of markers, or quite a large font... -- Rune / 5Q5R
By Rune Broberg · #6462 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
Usually, the distance to the antenna feed point is 15-20m in my case, but it can be more on high towers. Your suggestion to use a USB extender is a good one, thank you. It will work great for YAGIs on
By Ady, YO2NAA · #6461 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
A Pi with Python https://www.raspberrypi.org/documentation/usage/python/ .. should be able to run a hack of this: https://oristopo.github.io/nVhelp/html/nVcmd.py in bash shell scripts for such special
By Oristo · #6460 ·
Re: coax fatigue #test-jig
These have heat shrink (one layer) twice the length of crimp ferrules; 34cm is longer than typically needed, so splurged another ~ US$6.50 on four more with 15cm length. A source for durable pigtails
By Oristo · #6459 ·
Re: Chasing ghosts??? #internals #calibration
Rich, Current calibration is calculated per frequency point so no relation whatsoever with any other point in the scan. See here: /g/nanovna-users/wiki/Application-Notes for the
By Erik Kaashoek · #6458 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
How distant is working position? USB extender up to 150ft costs < US$10 https://www.amazon.com/dp/B07LDCK438
By Oristo · #6457 ·
Re: coax fatigue #test-jig
I have used two alternatives: wrappable heat shrink and Silicone Rubber Self Fusing Tape. The tape come in different thicknesses and widths. A life-saver during some high-altitude balloon missions,
By Rich NE1EE · #6455 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
The ability to resize to fit the display would be a great improvement. My laptop has a 17" display running at 1600x900 but still have the scroll bar for vertical position of the chart. It would be
By wa5tku@... · #6454 ·
Re: Measuring swr
The author does not own older Android, so configured the app support for his versions.
By Oristo · #6453 ·
Re: Measuring swr
you are probably correct, my older android is ver7
By Paul Raymond <kc1gtk@...> · #6452 ·
Re: Measuring swr
Tried to install on my Droid running v6x, and the Play page says that it is not compatible. This may be because it doesn't work on v6x, or maybe the authors have not configured the page correctly? Any
By Rich NE1EE · #6451 ·
Re: Chasing ghosts??? #internals #calibration
I am new to VNAs, but have wondered during these past few weeks as I experimented with my NanoVNA-H if it is better to calibrate /within/ the 3 bands that use different harmonics. 0-299MHz 301-599MHz
By Rich NE1EE · #6450 ·
Re: How to make Nano VNA Saver fit the full screen without using vertical scrollbars
I park my taskbar on the left, because most screens these days have lots more pixels in width than in height, and I auto hide the taskbar.This is especially useful when running several fldigi apps
By Rich NE1EE · #6449 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
No. nanovna-saver is written in python, it runs anywhere you can get python. I use it on my linux systems. Shouldn't be hard to add an interval timer to it. However, I've thought that maybe it would
By Steven Dick · #6448 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
I like nanovna-saver, but that runs only on Windows? And I don't know that it has an interval timer for data acquisition. -- On the banks of the Piscataqua Rich NE1EE
By Rich NE1EE · #6447 ·
Re: Storing and recalling scan later via Nano VNA saver (or similar) #internals #consolecommands
How about connecting a Pi or summat running *nix and Python. Not an expert w either one, but have tinkered w the Pi (and others, such as Propeller)
By Rich NE1EE · #6446 ·