Travelling at the speed of light...

Wow! You'd better set up those speed camera alerts way ahead of time!!

Freddie40 Wrote :Wow! You'd better set up those speed camera alerts way ahead of time!!

Ya at Least 2 to 3 Lights years ROFLMAO

I occasionally find similar error messages of very high speed or 0 speed within seconds of transferring poi's from the sd card to the GPSr, using the built-in utility (370,660,680,750). The message flashes and then disappears quickly.

I eliminated the problem by deleting the current poi's from the \\garmin\poi\ folder on the GPSr, and subsequently re-inserting the sd card for the poi transfer to the GPSr.

I'd just transferred a Speed Camera database. I did it by SD card, because I have two units to update. The condition hung around long enough for me to go into the menu and enable the Screenshot and then go back and capture it.
A Power-cycle seems to vanquished it back from whence it came!...

I frequently find that I have a Maximum speed reading on my 7200 of over 200 MPH. I think it occurs when the vehicle is sitting still but am not sure why.

Good to know! - will save me from having to delete the poi file on the GPSr.

Since GPSes apply a complicated formula to the information received from the satellites to determine their position and movement, it's not inconceivable that a) the software has a bug or b) something may have interfered with the signal and caused the unit to miscalculate or c) one of the satellites is beaming down bad data. Not all the various satellites are up and working properly at all times. Aircraft GPS systems check individual satellites against one another for discrepancies. If the data one is providing is found to be inconsistent with what the others are transmitting, it's discarded.

I agress with Freddie.If you loose satellite signal and regain after few seconds, software glitch records these unusual speeds.
On a regular flight of usually 500MPH, I got 923MPH.

At least throttle it down to sub-light in school zones.

LOL!

forget the speed cameras at that speed all they will see is a blur.

Were you in a bit of a hurry? LMAO

I believe that is what Asianfire's GPS showed last time he got that speeding ticket

Hey Chatty Charlie, when you going to learn to use that fancy radar detector???

radar detectors are pretty much useless against laser. They just tell you when you have been tagged. Mine is really useless being so high and behind the blue tint. He shot me at less then 500 ft so that is about a 1.5 ft diameter spread when it hit me. So if he shot me where he was suppose too, headlights or license plate, the detector wouldn't have alerted (and it didn't). Think about getting a laser jammer, but don't have the money (and don't want to fight with the wife over it) for it right now.

Maybe some data in the POI file got scrambled?