[time-nuts] Re: Domestic time pulse transmission

[Lux, Jim]

On 8/4/23 2:47 AM, john.haine--- via time-nuts wrote:
> I'm wondering if the group wisdom could help me work out a good way to send
> a ~1pps pulse from a mechanical clock to a time monitoring system?  This is
> for a pendulum clock project where the clock is electronically controlled
> and I want to measure its timekeeping remotely to avoid having to build the
> time reference and logging R-Pi into the case.  I do not want to have to run
> a cable from the room where the clock will be to the place where the logging
> is done, so the options are radio or using the mains wiring (the clock will
> be mains powered with battery backup).  Obviousy there are options such as
> the cheap 433MHz transceivers that are available which I am investigating,
> but does anyone here have any experience of techniques that work (or, just
> as importantly, don't work!) please?
>
>   


what kind of timing uncertainty is acceptable? milliseconds? 
microseconds? femtoseconds? (the latter will be difficult)

Do you mind having "missing ticks"?

The 433 MHz remote pushbutton/doorbell works, there will be a sort of 
fixed offset between "contact closure" on one end and the other, and 
sporadic interference/jamming from other devices in the band will be an 
issue, hence the missing/delayed tick question.

Think garage door opener.