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?
----- Original Message -----
From: "Scott Johns" <email@example.com>
To: "Towertalk" <firstname.lastname@example.org>
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
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
> TowerTalk mailing list