WGS-84, NAD-27, etc are DATUMS, a means to correct the grid of abberations
in the N/S axis on a particular map projection.
NAD-27 is based on sightings and hand surveying, while WGS-84 is primarily
based on aerial photography.
For ham use, the error between datums are generally small, up to several
hundred kilometers and typically less than several kilometers. So, don't worry
about it unless you're sighting a repeater or into intensive propagation
analysis from fixed sites.
There are several good papers and books on the various datums, k factors and
projection corrections available from the USGS.
\On Thu, 29 Apr 1999, Andrew Benham wrote:
>On Thu, 29 Apr 1999, Riley Williams wrote:
>
>> I'm not sure what you mean by "WGS84 Lat/Lon" as WGS84 has nothing to
>> do with Latitude and Longitude, but to a grid system that's overlaid
>> onto the Lat/Long system for use within a specific country or set of
>> countries.
>
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James S. Kaplan KG7FU
Eugene Oregon USA
[EMAIL PROTECTED]
http://www.rio.com/~kg7fu
Have YOU tried Linux today?
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