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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

There are many discussion on this forum around the "noise" on CH1 limiting the dynamic range and weather the noise is influenced by the termination of CH1 or by good or bad SA612 So I decided to

Goddammit... Have I waste $1 / 1€ / ?1 on these now ;-)

Rune where can I find the 1500 mhz code? Thx 73 Dana VE3DS =================================== Dana, it's not Rune's firmware, but see: /g/nanovna-users/message/2391 73, David GM8ARV

Hi qrp.ddc and Rune I think it is time to get this discussion straightened out.. Doing a simulation of an SMA female adaptor with e.g. the program FEMM and by basing the simulation on mechanical

Further thoughts. Best evidence presented so far shows two plots, one with a noise floor of abut -80db, the other with a load connected to Ch1 shows a -85db noise floor. But that noise floor wobbles

Glad to help Joe. I recognise your callsign from the QRSS Grabber that I have monitored in the past. I think it got zapped by a lightning strike ? 73 de Andy

Don't forget to upgrade NanoVNASaver - that phase error was fixed in 0.0.9, and 0.0.10 will be out "soon" :-) -- Rune / 5Q5R

Several days ago I reported stability issues with some usb commands ( /g/nanovna-users/message/2379 ) . This is a follow-up... First, to summarise the issue, a number of commands sent

forgot

Hi Andy, you make my day ;o) The error was before the "nano" :o)) I had probably callibrated correctly, but was of the opinion DONE = Done, saved. I wondered why the Save window would appear again and

Did you look at the phase of CH1? If its coherent (not all over the place but a more or less straight line with frequency) then its not noise that is limiting the CH1 measurement but leakage from the