For those that want to do very accurate phase and frequency measurements, but are not willing or capable to buy a PhaseStation or Timepod a new FW has been made available for the nanoVNA-H4 HW that converts it into a mix between a DMTD and PhaseStation. Accuracy of phase measurements is better then 1e-12 / (Tau in seconds) and the device support sending the phase measurements over USB to programs like TimeLab or writing to an internal SD card for later analysis. During testing and comparing to other frequency and phase measurement devices the tinyPFA outperformed conventional frequency counters and delivered phase measurements identical to a PhaseStation when used above the noise floor. A wiki containing all the information for creating and using your own tinyPFA can be found here: https://www.tinydevices.org/wiki/ A support forum is available in case you have questions regarding the operation of the tinyPFA or ant to share results As the FW is fairly new you can expect some bugs. The nanoVNA-H4 HW does not have to be modified so after use as tinyPFA it can always be converted back into a VNA.

Hi It works very well. Thanks for the effort to get it up and running !!! Bob > On Dec 21, 2022, at 8:57 AM, Erik Kaashoek via time-nuts <time-nuts@lists.febo.com> wrote: > > For those that want to do very accurate phase and frequency measurements, but are not willing or capable to buy a PhaseStation or Timepod a new FW has been made available for the nanoVNA-H4 HW that converts it into a mix between a DMTD and PhaseStation. > Accuracy of phase measurements is better then 1e-12 / (Tau in seconds) and the device support sending the phase measurements over USB to programs like TimeLab or writing to an internal SD card for later analysis. > > During testing and comparing to other frequency and phase measurement devices the tinyPFA outperformed conventional frequency counters and delivered phase measurements identical to a PhaseStation when used above the noise floor. > > A wiki containing all the information for creating and using your own tinyPFA can be found here: https://www.tinydevices.org/wiki/ > A support forum is available in case you have questions regarding the operation of the tinyPFA or ant to share results > As the FW is fairly new you can expect some bugs. > > The nanoVNA-H4 HW does not have to be modified so after use as tinyPFA it can always be converted back into a VNA. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com