[time-nuts] Re: Very accurate phase measurement using nanoVNA-H4 HW: introducing the tinyPFA

[Bob Camp]

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 at 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.
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