NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Radio Synchronized Clock
From: Steven Wepster
Date: 2002 Mar 5, 01:28 +0100
From: Steven Wepster
Date: 2002 Mar 5, 01:28 +0100
Dear Brian,
Sorry I did not get your intention straight away. Yes, I agree with you
that radio clocks are very likely only useable within a limited range, and
therefore I prefer to take a quartz watch that I keep at wrist temperature
and that has a known rate.
Steven.
-----------------------------------------------------------
Steven Wepster wepster@math.uu.nl
tel +31 30 253 1531
Mathematisch Instituut
Universiteit Utrecht
PO Box 80.010
3508 TA Utrecht
The Netherlands
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On Fri, 1 Mar 2002, Brian Whatcott wrote:
> Ah: I didn't make it clear.
> 1) Clock modules and complete radio synchronized clocks are available cheaply.
> 2) A chronometer is required for traditional nav methods
> 3) Will a radio synchronized clock stay locked at sea?
> 4) The range of a low frequency transmitter in the 60kHz to 75kHz range is
> about 2000 nm for our purposes
>
> Therefore - this clock though admirably accurate, is not suited to the deep
> sea task.
>
> OK?
>
> Brian W
>
> At 10:12 AM 3/1/02, Steven Wepster in Holland wrote:
> >Hi Brian,
> >
> >What's your point?
> >
> > >I found the web site for the offering I mentioned -
> > >
> > >and discovered their current price for a complete wall clock
> > > of this kind is $16 + PP.
> > >The Cambridge URL for Markus Kuhn which you mentioned below,
> > >suggests that Fort Collin's range would be about 2000 nm by comparison
> > > with the German LF clock transmitter's range (2000 km) & ERP
> > > on the same frequency.
> > >
> > >Thanks
> > >Brian W
>
> Brian Whatcott
> Altus OK Eureka!
>






