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You can use the TAPR PC SW for averaging . See File section of this group It will not improve directivity or dynamic range

I tried the 1500 MHz firmware yesterday and was happy to see that nanoVNAsaver worked with the extended range. Of course, with the very weak signal levels above 900 Mhz the data plots are quite noisy.

erik@, if you want to get deep measurement for S21, I suggest you to disconnect NanoVNA from PC and perform measurement from the battery. The result will be significantly better. I don't know what is

Interesting measurements! On my own build VNA using exactly the same principles as the NanoVNA (SI5351 and 3*SA612) but using a PC audio input instead of an on board adc and a PC processor for the dsp

I got this open load with NanoVNA, is it bad?

I received my NanoVNA yesterday. I purchased from this ebay seller:

Just performed test. I disconnected PC to avoid interference and performed measurement from the battery. SHORT load on CH1: noise floor almost -50 dB above 600 MHz OPEN load on CH1: noise floor

I've been looking into what could be done to improve the nanovna's dynamic range at the +900MHz frequencies, and so discussions about noise and leakage are very relevant. I've started my analysis as

Don't confuse isolation with noise. Noise doesn't depends on a leak from the second channel. Noise is independent. If you want to calibrate isolation, you're needs to reduce noise by terminating input

[email protected]> wrote: The filter will obviously chop off the harmonics, The high-end VNAs, like the Keysight PNA-X, have the harmonics suppressed by 60 dB or so. Obviously, they work a very

Rune, The new "Using the software" section on your GitHub page (https://github.com/mihtjel/nanovna-saver) is much appreciated! The new pip installation also is nice, although on Windows I prefer to

Nice to see the output verification with an oscilloscope. I guess in theory, with a completely different firmware it could be re-purposed as an extremely low power WSPR mode transmitter (0.1

Checking with my ‘scope, at 7MHz I get 0.2V pk-pk which is -10dBm. Passed through a 40m lpf it is still 0.2V pk-pk but the scope trace looks a lot nicer! Thanks for the help. 73 John M0JBA

John, From the specs below, expect -13 to -9 dBm. Since you are a ham, the power to voltage calculation should be trivial to you. Basic Parameters: - PCB: 54mm x 85.5mm x 11mm (without the size of

Thanks Erik, I’m in the right ballpark. 73 John M0JBA

-10dBm

Hello Erik Super if that is so then no open adaptor should be used for minimum fringe C not encountered for It seems sensible not to embed anything in the firmware I suppose more comment on the topic

Hi all, What output voltage should I expect from the NanoVNA into a 50 ohm load with CW FREQ selected under the STIMULUS menu. 73 John M0JBA

@Kurt, Are you referring to the "open_model" data in the firmware? I could not find any reference to that model in the firmware so I guess it is not used.

I started a separate topic on measuring the CH1 noise or leakage