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An off - topic question to any math wiz knowledgeable about Smith chart. There are oodles of stuff about Smith chart, but I have not be able to find WHAT is the actual scale of the coordinates. For

Thanks a ton guys! have some 50ohm for dummy loads I planned to build, will use and report.

Hi Larry, Thanks. I have one from the first batch, I am used to upgrade. And it's so easy to go into dfuse mode...

Newer FW versions add functionality and/or correct errors. Any FW version from the beginning of 2020 will do and they are easy to flash into the device.

Thanks, but sorry I did not get if you answered my question: best fw for nanovna-saver Cheers and thanks

Thank you it seems I am too late... Chris --- 'Everything should be made as simple as possible, but not simpler.' -- Albert Einstein Am 24.03.2020 um 11:23 schrieb CT2FZI:

On Tindie you can pay with Paypal. In my account I can use it for paying... Chris --- 'Everything should be made as simple as possible, but not simpler.' -- Albert Einstein Am 05.03.2020 um 21:27

The nanovna saver is not currently being developed because of the busy programmer. Latest Version: 0.2.2.1 (Python 0.2.2) https://github.com/mihtjel/nanovna-saver/releases/tag/v0.2.2 The 2.8-inch core

Hi everyone, From all the firmware versions for the nanovna-H (original) what firmware do you recomend to take the most from the nanovna-saver? Or, is the nanovna-saver agnostic to fw version? Cheers

Howdy Pablo! This virus should has thrown the world into turmoil... I hope it turns out to be a minor virus, not as bad as the flu. As far as coax for antenna for an H/T, I would assume around 145 MHz

Hi Roger, Thanks for this, your results look very similar to mine, there is a slight difference in the frequency of the dips but I assume this is due to differences in the mix of the core material,

Tindie out of stock - I have purchased their last unit :)

Kerr, I wound two 1T to 8T impedance transformers using BN73-202 binocular cores and insulated, solid, silver-plated wire-wrap wire. They were connected back to back and the 1T sides soldered to SMA

Pablo you can also take a look at this video that is very detailed on how to determine the impedance and velocity factor of any unknow coax cable: https://www.youtube.com/watch?v=TpIIftvQPFM

Saludos Pablo, You could use the TDR function of the NanoVNA to check the impedance of an unknown coax cable by soldering a non-inductive variable resistor (value within the range of the suspected

Had exactly the same DANG here. Totally loose display and connector broken. I was able to resolder the display onto the pcb. Took me 5 times of trying but I succeeded :-) Give it a try. 73, Arie Pa3a

50 or 75Ω, it shouldn't make a big difference unless you are wanting to push high power through it.

Try these: /g/nanovna-users/topic/69269493 https://www.rudiswiki.de/wiki9/nanoVNA#Coax_Cable_Impedance

Hi guys and greeting from Buenos Aires, Argentina. We're in full country quarantine since thursday, I was planning on buying some cable, but our govt acted so fast that I had no time, so I'm stuck at

Gyula wrote: Guyla, correct, no need to convert to .dfu, but dfu-util can update with the ch.bin file. It is not necessary to install STLink (at least in 10.14.6), but is there some other benefit to