Magellan Roadmate 700 GPS on C?
Doug
This is the only nav I have used so I cannot give a fair comparison. All I know is it works great and has saved a lot of headaches. It only takes a while to find it's location if you power the unit off and drive some distance before turning it back on. In that case, you can manually enter your new location (or ballpark-it if you are not sure) and it will "find itself" much faster (seconds instead of minutes). Or you can avoid this problem altogether by never turning the power off while driving.
I would not put this thing in the ashtray for a few reasons. First, it wont fit. Second, you want it on the dash so you don't take your eyes off the road. Third, the volume and repeat controls are on the top/rear of the unit. Forth, I think the speaker is in the back or on the side. Fifth, the shifter will get in the way while pushing the buttons. Sixth, the screen will be hard to read unless to angle it towards the viewer.
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One thing to consider, built in Nav systems have gyros that know which direction you are traveling in, the portables like the Roadmate do not. So when you start up from a standstill it can't tell you which direction to go relative to where your car is pointing. This caused my buddy great confusion on his Roadmate (and he has Comand, this was for his Jeep) and actually caused him to get lost several times because the arrow points straight but in reality the car is pointed the other way so you start driving and it gets confused for a while until it realizes which direction you are moving in. Ironically, the Hertz Neverlost which the Roadmate is supposed to be a sibling off does have the gyros and at CES in January, the Magellen rep said they will have a model coming out that's more like the Neverlost. Also they promised they would do something about the really bright and annoying blue power switch light.
"Please proceed to the nearest road"
"When possible make a U-Turn"
"Prepare to turn left in 500ft"
"Your destination is located on a street with restricted access"
"Prepare to turn right onto SR-30"
Just to name a few.
A few things I don't like about the Roadmate 500 (this may or may not apply to the 700):
Inability to enter your destination using coordinates. (I needed to do this once and had to manually keep my eye on the coodinate display until the numbers matched those of my destination)
No altitude display (at least not that I can find, but not a big deal).
Sometimes pauses a for a few seconds while typing in letters.
Built-in NAV is cool, but being able to pop a portable in anybody's car (like a rental or a friend's car) is worth not having the integrated look. And cost about 1/2.
Last edited by avlis; Aug 6, 2004 at 04:43 PM.
A lot of modern integrated navigation systems also have gyros as well as speedometer hookups. The gyros keep track of how the vehicle turns, and the speedometer tracks how much distance you've covered. It is used mostly as for 'backup' purposes when the satellite signal is temporarily lost (like say in the downtown areas with lots of tall buildings). The navigation unit uses the last 'good' position measurement, then from then on interpolates where you are with the gyro and speedometer inputs.
I've also been told by a friend who has a new Sienna that their built-in navigation system only gets satellite positional inputs once every 15 seconds
It then uses the gyro/speedometer inputs to interpolate where you are in between those times. I find that hard to believe though - why don't they just update their current positions from the gps receiver more frequently?!Ed.
Ed.
Magellan is very accurate even without gyros. Just changing lanes on a 4-lane higway will move the map. It appears that it gets a signal about once per second. If you drive into a tunnel and lose the sat signal, it automaticly changes from displaying the map to displaying the driving directions. I guess this is one area where gyros/speedometer would have the portables beat.






