Gps Question

[Guest JayVee]

True or false:

 

All GPS units, whether it be an automotive GPS, handheld device, or chart plotters built into fish finders, rely on pre-constructed, pre-loaded maps. Your current position, obtained by communication between the unit and a satellite, is superimposed on said map.

 

 

[darrinhurst]

To the best of my knowledge, which is extremely limited, yes.

[Weedy1]

False. Some very basic units such as the Garmin Etrex do not use preloaded maps.

 

https://buy.garmin.com/shop/shop.do?pID=6403&ra=true

 

 

[PeteZahut]

If your GPS is showing you a map then it is preloaded, bottomline. The GPS unit receives a signal from the satellites to figure out its position or time. There is no mapping information received from the satellite signal itself, only position and time information.

[ruffsranger]

If your GPS is showing you a map then it is preloaded, bottomline. The GPS unit receives a signal from the satellites to figure out its position or time. There is no mapping information received from the satellite signal itself, only position and time information.

 

 

It can't be said any better than that!

[midgetwaiter]

If your GPS is showing you a map then it is preloaded, bottomline. The GPS unit receives a signal from the satellites to figure out its position or time. There is no mapping information received from the satellite signal itself, only position and time information.

 

Iphone and other Google maps using handheld devices will update map info over 3G.

[robert]

True or false:

 

All GPS units, whether it be an automotive GPS, handheld device, or chart plotters built into fish finders, rely on pre-constructed, pre-loaded maps. Your current position, obtained by communication between the unit and a satellite, is superimposed on said map.

 

All I know is that I have a garmin nuvi that gets me lost once in a while. punch in an address here in the city, take a left here, take a right there - then drive for 254 kilometers to your destination. Bwahahah, all I can do is laugh at it.

 

Had to do a map update, took about 3 hours for it to happen - so yeah, preloaded map.

 

 

[ruffsranger]

All I know is that I have a garmin nuvi that gets me lost once in a while. punch in an address here in the city, take a left here, take a right there - then drive for 254 kilometers to your destination. Bwahahah, all I can do is laugh at it.

 

Had to do a map update, took about 3 hours for it to happen - so yeah, preloaded map.

 

Hey robert

That is so true.

I think that I'm getting off the topic, but I bought a nuvi 1490 in December & have updated it twice since.

It is a good thing that I know where I live, because Garmin certainly doesn't, & can't guide anyone to my address.