Garmin claims 15 meters average accuracy on their Web site. http://www8.garmin.com/aboutGPS/
Glenn AA5PK ----- Original Message ----- From: "Nigel Gunn G8IFF/W8IFF" <[email protected]> To: "Lee Ernstrom" <[email protected]> Cc: <[email protected]> Sent: Sunday, July 25, 2010 6:37 PM Subject: [amsat-bb] Re: Playing with GPS > Nobody guarentees your GPS to be accurate to within 30 feet and neither does > Google maps. > My GPS usually claims around 10-12 feet accuracy provided it can see around > 10 satellites. > Leave your GPS on laying in your yard for a couple of hours plotting it's > course and see how far it wanders. > > On 25-Jul-10 22:55, Lee Ernstrom wrote: >> Hi Guys, >> >> I have been playing around with my Garman NUVI GPS and comparing the >> readings to Google Maps. This is something you call try at home. My >> Garman says that the base of my HF tower is at 41.07430 N 112.03774 W. >> When I punch in those coordinates in to Google Maps in the satelite view >> mode the arrow points to a location about 30 feet away near the middle >> of the lawn east of my driveway. When I play around with the >> coordinates a little through interpolation and punch them in to Google >> Maps several times I arrive at what appears to be the true coordinates >> of the base of my HF tower at 41.074329 N 112.037770 W. I suppose that >> is the significant difference that sixth decimal place makes. Check >> both of these coordinates on Google Maps to see what I mean. Any >> comments? >> >> WA7HQD >> Lee Ernstrom >> Syracuse, Utah DN31xb >> _______________________________________________ >> Sent via [email protected]. Opinions expressed are those of the author. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb >> >> >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 9.0.851 / Virus Database: 271.1.1/3026 - Release Date: 07/24/10 >> 18:36:00 >> > > -- > Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 > 825 5032 > Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail [email protected] www > http://www.ngunn.net > Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club > International #385, > Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, > GCARES, XWARN. > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
