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Re: [TowerTalk] GPS receivers

To: "Tower" <towertalk@contesting.com>
Subject: Re: [TowerTalk] GPS receivers
From: "Tower (K8RI)" <tower@rogerhalstead.com>
Date: Mon, 20 Sep 2004 10:09:50 -0400
List-post: <mailto:towertalk@contesting.com>
<snip>

Mike wrote


I don't disagree that Garmin is by far is a better unit than the
Magellan.  I however don't consider the Magellan to be junk.  I've
compared my Magellan against Garmins three times the cost and they had
the same Lat-Lon down to the 5th decimal place and +/- 5 meters <16
feet> of elevation.

That is beyond the system's capability unless using Wide Area Augmentation System (WAAS) which is only on the newer and more expensive units. The non WAAS GPS is capable of "an average" of +/- 15 meters, not 5. Short term they may *appear* much better as to repeatability, but the absolute is only that average which means it could at times be notably worse See http://www.garmin.com/aboutGPS/ for a good explanation of the system. Normally GPS has poorer resolution in altitude than lat-lon.

Roger Halstead (K8RI, EN73 & ARRL Life Member)
N833R, World's Oldest Debonair (S# CD-2)
www.rogerhalstead.com

--
Mike Urich, KA5CVH
http://ka5cvh.com

Character = How you treat people who can do nothing for you in return!
_______________________________________________

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.

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_______________________________________________

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.

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