[time-nuts] Loran-C Anthorn

EB4APL eb4apl at cembreros.jazztel.es
Mon Jul 12 07:31:53 EDT 2010


A word of caution here:  Don't trust Google maps coordinates for any 
technical / serious work, they can have errors in the 100´s meter 
class.   And also don't use the copyright date of the maps and images as 
a time reference, they normally are older than that. If you live in an 
area under urban development you can check what I mean.
Take in account that this is a beautiful thing for locating a restaurant 
or a route, and can be classified as a geomarketing tool, not a 
measuring one.
You can verify this yourself easily comparing your GPS antenna location 
with the coordinates given by the program and also looking for roads, 
etc. mismatches in the image seams.

I had to explain this a lot of times to guys trying to do shortcuts for 
technical projects.

Regards,
Ignacio, EB4APL


Peter Vince wrote:
> Hello Antonio,
>
>      Looking at the aerial photographs on Google Maps, the transmitter
> building can be seen at 54.91224°N, 3.27831°W - nearer Cardurnock than
> Anthorn!  Which are the actual aerial masts though, I don't know.
> Might I suggest you contact Peter Whibberley at the National Physical
> Laboratory (peter.whibberley (at) npl . co . uk) - if he can't tell
> you, he will certainly know who can!
>
>      Regards,
>
>           Peter Vince
>
>
>
> On 12 July 2010 00:40,  <asmagal at fc.up.pt> wrote:
>   
>> Greetings to the group.
>>
>> I would like to have the exact (and trustworthy...) WGS84 coordinates
>> of the Anthorn Loran-C antenna. Searching the net I got at least three
>> different sets of LAT/LONG. It seems to me that exactitude is not a cult
>> anymore, except for us the nutties...
>>
>> I would also appreciate to have the exact Coding Delay for that transmitter.
>> (Not the Emission Delay, which is known to be 27,300.00 uS).
>>
>> Thanks in advance.
>>
>> Antonio
>> CT1TE
>>
>>
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