On (27 Apr 97) John Duke wrote to Ed Stimach...
 > I just got a new GPS unit for my boat. I was wondering if there was any
 > feedback of good/bad experiences anybody has had with them.
 JD> I am looking at them too but there os a new one. I thinl it's DGPS.
 JD> It works off of towers.. the gps is withing 100 yards the other one is
 JD> supposed to be accurate to 10 yards...
 JD> John Duke  KE4TQP		   johnduke@trader.com
       Check out GeoResearch, John.
http://www.georesearch.com/
       Their system is accurate within 10 feet! It will search for
  three (3) of a total of 24 satellites, using triangulation to
  pinpoint one's location. Extremely accurate!
       If the antenna loses a satellite, the software immediately
  picks up another. The system which includes antenna, cable, and
  software, sells for around $360.00 .
  -- Ed --
  stimac@hal-pc.org
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