Some GPS units can set their DATUM to NAD83.. GPS, by default, uses WGS84..
Off hand, I can't recall, but I think NAD83 and WGS84 are fairly close
(within a matter of a few meters)... The topo maps are generally done to
NAD27, which can be several tens (or hundreds) of meters different. There
is a datum conversion program and web toolo on the web at either USGS or
NIMAs web site.. google for "datum conversion"...
What precision does the FAA want for it?
Jim, W6RMK
----- Original Message -----
From: "Scott Johns" <petvet@adelphia.net>
To: "Towertalk" <towertalk@contesting.com>
Sent: Wednesday, June 25, 2003 12:59 PM
Subject: [TowerTalk] FAA form 7560-1 question
> I'm getting ready to file an FAA 7460-1.
>
> Can any of the professional tower guys explain how to obtain the NAD 83
> latitude / longitude coordinate data for my property?
>
> I'm assuming a regular GPS coordinate is not sufficient?
>
> 73, Scott W3TX
>
>
> _______________________________________________
>
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>
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