[MLB-WIRELESS] GPS & Mast

[James Robertson]

IIRC, with 3 sat's locked on you can get your lat/long. With a 4th, you 
can get altitude as well. Newer GPS's will lock onto multiple sat's at 
once, decreasing tracking/lock on time.

GPS resolution is ~3 meters or so, iirc. I'm not sure how much accuracy 
depends on the amount of sat's you have locked on.

On Wed, 26 Jun 2002, Matt Pearce wrote:

> I was wondering if GPS units come with altimiters that are sensitive to about .5 metre's or so??  Also if someone has a GPS with an altimetre in it would they we willing to come out to my house in Boronia for an hour or so to help me work out the height I am going to need to put my antenna's onto to try and get over a hill (I personally am bidding 20metre's).
> 
> Could anyone also tell me where to look for an extendable antenna pole that can go 20m + ??
> 
> Matt.
> 

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