[time-nuts] Re: As there a hobby application of precise time or frequency measurement except for being a time nut?

[Dana Whitlow]

There are the HAMSCI measurements of path delay variations due to solar
eclipses
amd various other causes.

Dana


On Fri, Apr 11, 2025 at 6:57 AM Erik Kaashoek via time-nuts <
time-nuts at lists.febo.com> wrote:

> Maybe the subject line is a bit clickbait but this is a serious question.
> Hobby VNA are used to measure impedance for antenna, amplifiers,
> filters, PCB's and cables. Many applications for a VNA outside the
> professional world.
> Hobby spectrum analyzers are user for hunting RFI, measuring harmonics
> of active devices, assessing what part of the spectrum is still
> available for wireless devices, etc... Again many applications.
> But for time and frequency measurement the situation seems to be
> different. What are hobby applications for accurate assessment of
> stability, time or frequency?
> For radio amateurs that operate in the GHz bands the accurate assessment
> of the frequencies of their generators is such an application but what
> other applications do exist and what are their requirements regarding
> accuracy?
> I'm purposely excluding the applications where the accuracy is the goal
> instead of some usage for accuracy.
> Any input is welcome.
> Erik.
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