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Dragan, in the column "G" it is not correct to use ATAN function!??? The correct expression for cell "G3" is =DEGREES(ATAN2(D3;E3)))? The same for the following rows. Piero, I0KPT

One is the charge led that flashes while being charged and is steady when fully charged. The other flashes in step with the sweep when on Gary W9TD

Try the attached spreadsheet

Federico, I am running nanovna-saver-v0.2.0, that export .s2p file using the "RI" format (one column for the real part, another column for the imaginary part).?? I see that Steve's? spreadsheet

I've scanned some of the materials and cannot find any descriptions of the states of the LEDs. Any clues? Thanks, Roger N1EYZ Roger Tobin Roger.tobin@... <mailto:Roger.tobin@...>

That's what I'm trying to do with nanovna.... Which S21 values should i insert in Steve's spreadsheet ? Which format conversion is needed ? Federico ik3umt

You would be amazed how many LNA's have a POSITIVE Return Loss.i.e. more comes back than goes in!??? Kent WA5VJB

Also, after thinking about this a little bit, the resonant frequency of the trap likely stays pretty much put. However, the trap would significantly affect the antenna resonant frequencies for which

Herb, Thank you so much for re-printing this here - saved my bacon!

Correction to an obvious error: Parallel tuned is a high impedance at resonance. Jerry, KE7ER

Oohh. that's everyone's first guess.. but think about it.. if you want to measure the S11 of a LNA, you can't put 50dB of attenuation in front of it. You put 50 dB of attenuation in the stimulus line,

There was an application note written for the SARK-110 VNA on measuring traps. The setup details on the analyzer are different but the method is the same....

Eric, if DeFuSe demomshows your device is in dfu mode, your driver's are working. Make sure you're using the Upgrade (Flash) button and not the Upload (read device flash) function.? If you used

I would think attenuators and booster amps may as well be in the external cables. Not terribly familiar with all this, perhaps there are special tricks involved to measure something like s12 on an

yes, it's going towards the fieldfox type of capability, not the "bench VNA" - The latter would typically bring out the source and receiver inputs with a loop, so you could use different bridge or

I would probably test a parallel tuned trap as a single port, with the far end of the trap grounded. Should see the impedance head towards zero at the resonant frequency. But could also be done as a 2

That's a beautiful looking board layout, clearly done by somebody who knows microwave RF. If the spec's are anything like those stated, I'll probably buy one eventually. Whatever final form it takes.

Hope DisLord gets an engineering sample?

Only connect SWDIO, SWCLK and GND. NRST is not needed. Neither is VDD If needed force nanoVNA in DFU mode by connecting BOOT0 and VDD before switching on. -- NanoVNA Wiki:

I also interested in "engineering sample" with or without milled enclosure? Pada Selasa, 29 September 2020 18.12.10 WIB, Carsten Bormann <cabocabo@...> menulis: It is probably a quite limited