[time-nuts] question about Thunderbolt geo acuracy

[swingbyte]

Hi all,
Hope this isn't too chat roomy, however, I have need of a survey precise 
geolocation type gps.  I was wondering if the precise timing abilities 
extend to its precision in position output?  I have a thunderbolt and 
one of those conical white aerials from china and would like to know if 
this combination will give me accurate height data.

Thanks

Tim