开云体育

URLs with blanks will be problematic, but that PDF just has 3 more URLs: Zplots.xlsx from AC6LA https://ac6la.com/zplots1.html Rigexpert https://rigexpert.com/products/software/antscope2/ Sim Smith

I have a Samsung S7 Edge actually Android 8. I did already many test for the nanoVNA with chrome without succes. I downloaded nanoVNA app it didn't work. Yesterday I used a normal OTG cable instead of

On Sat, Nov 2, 2019 at 09:00 PM, Jeff King wrote: > > This file shows 3 software programs to get all the information you need > > https://jking.000webhostapp.com/NanoVNA with antenna or component

Well, my HP was calibrated decades ago before I retired. and like you say for fun stuff it is good enough. I prefer to roll my own now. Close enough is good for me. Mel, K6KBE

This file shows 3 software programs to get all the information you need https://jking.000webhostapp.com/NanoVNA with antenna or component detailed Analysis.pdf You can extract: SWR - Standing Wave

Mel, I used a commercially made HP 50 ohm termination as my standard until David Taylor pointed out that even though it was manufactured by HP its s-parameter specs were lukewarm at best. My S11

Sounds painful... The Maxima install was uneventful here under Windows 10 on my desktop. It looks like learning how to use it is going to be my next hurdle. :-) I have verified that all three user

Very, very slim, I would say.? There are probably several billion of those processors in use in various gadgets around the world, many of which get updated regularly.? Some people update their Nanos

Apologies - forgot the important bit.

It's a $0.02 device! I am using both diodes in the BAV99 package in series hence Vf ~1V with VBATEN set and ~0.5V with VBATEN unset. We're interested in Vf @ 1.5uA and 40uA. See attachment from a Nat

I have a set of SS SMA PCB mount male connectors that I soldered 4 200 ohms 0603 resistors around the clock, 12,3,6,9 and it measures very close to my HP SMA termination. Mel, K6KBE

I have used several instruments and procedures to measure the isolation in dB, and impedance in ohms (calculated of course) using K9YC method and S21 on VNAs. They all come terribly close together.

---------------------------------------------------------------------------------------------------------------- As QRP replied, there is a difference between a 50 ohm termination and a good quality

Some Wiki Application Notes page entries may be helpful /g/nanovna-users/wiki/Application-Notes Common-mode chokes by G3TXQ ferrite bead measurements test jigs

Ed, Check the file section for Balun/choke investigation. Mel, K6KBE

For 'scan' command, which can return calibrated values, NanoVNA-Q firmware currently ignores the [points] value, always returning 101, but 'frequencies' returns the number of points requested. Using

Who have used the device to measure Impedance to Common Mode Current vs frequency for bifilar and coax wound ferrite toroid of various materials? Interested in a step-by-step procedure, which leads

On 23/10/2019 20:21, John Nightingale via Groups.Io wrote: --------------snip------------------ >>>> A little note for new Linux users who find that Rune's application > is not seeing the NanoVNA when

Kurt wanted to see some pictures so here they are. The first picture is the dB logmag of S11 of a 30cm semi rigid cable (medium) and a 1 meter RG58 cable (long), both Open and Short at the end, both

It looks like cheap Chinese SMA-terminators. If so, they have bad performance. Try to measure it with multimeter, does it have 50.0 ohm? Most of all it has high error, something like ±5 ohm.