[time-nuts] loran C searchlight station

[Brooke Clarke]

Hi Tom:

The best way to find out about the phase shifts is to phone the 
station.  I call the Middletown (9940) station when something seems 
strange and they have been very helpful.

The WWV data for 9940 is very poor and when asked about it they said 
that the distance between California and Colorado is the problem.
It used to be the case the HP in Cupertino (280 and Stevens Creek) had a 
room filled with atomic clocks and one of the things they did was 
monitor the 9940 chain for the government.

The Coast Guard LORAN status web pages also are a good place to get info.

Have Fun,

Brooke Clarke

-- 
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w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com



tom jones wrote:

>Did anyone notice lorsta searchlight (chain 9940) drift on the 4th of july 2006 at approximately 0715am pdt
>  my 2100f showed a phase gain of 150ns that seemed to corect itself by 0930 pdt.
>   
>  This also happened june 7th 2006 at approximately 1400 pdt with a phase shift 180ns and was apparently corrected by 1800 pdt of the same date.
>   
>  My 2100F reference is a hp-5061 which is continously compared with rubidium frs-c.  Also my frs-c rubidium and hp5061 are contimously compared with sirf gps 1pps.
>   
>  My confidence of this loran searchlight skew is about 94%
>   
>  Thats why I would like some confirmation of this from anyother time-nuts with atomic frequency standards.
>   
>  I've found government web sites that log loran stability completely inaccurate and usless (wwv site)  (uscgs) for monitoring the searchlight station.
>
>
>  
>