Slower air speed and no elevation
Wed, 07/23/2008 - 7:10am
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 16 years
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I just flew from Boston to Florida on US Air. The max speed that I recorded on my 260 was 545 mph. Once it locked on I was able to use it on my table. The plane was a 757 and I had a window seat. At one point the Flight Attendent ask me for our location. I tried to get our elevation, by pressing the blue arrow and it always read around 22 to 38 ft. From previous flights I know that we should have been around 32,000 to 35,000 ft., but the Nuvi showed 22ft. Am I doing something wrong?
Elevation
You probably were not seeing enough Sats to get an elevation fix. It takes a minimum of four Sats for an elevation fix, but only three for a position (or speed) fix.
Tom
Truncation
I know this was probably not the case for you because you said you had read previous altitudes... but in my case I was intitially confused by the numbers displayed until I saw that the units were displayed in kf... truncating the zeroes.
Not to drift from the topic, but... I've wondered sometimes if the elevation can sometimes affect the proximity (kind of assuming that everything is perfect at sea level and elevation throws a wrench at multi-angulation... or whatever the correct term is).
-damdefoe (Nüvi 200W, GPS12) "Everything that can be invented has already been invented." -- Charles H. Duell, director of the U.S. Patent Office, 1899
Elevation
I was not aware that we had elevation as an option. I have never seen it on my 660. I'll have to check that out.
****NUVI 660****
Elevation
I know this was probably not the case for you because you said you had read previous altitudes... but in my case I was intitially confused by the numbers displayed until I saw that the units were displayed in kf... truncating the zeroes.
Not to drift from the topic, but... I've wondered sometimes if the elevation can sometimes affect the proximity (kind of assuming that everything is perfect at sea level and elevation throws a wrench at multi-angulation... or whatever the correct term is).
I am sorry that when I said that I knew that the elev was around 32 - 35,000 ft. It was because I had been on a Jet Blue Flight last year and it had the built in TV screen that had all the flight info. This was my first flight with my 260.
Paul..... Nuvi 765T
I also believe it was a lack
I also believe it was a lack of sats that showed a low altitude. The airspeed was probably correct. Those larger planes do not go as fast and the airlines have been slowing down to conserve fuel.