A long wait for Garmin 750 to locate satlites

Maybe thats why it takes forever for me to find a satlite, i live in Seattle lol.

When I noticed long satellite acquisition times, I contacted Garmin. Garmin directed me to perform a reset of the Nuvi 750, after which sat acquisition times improved.

What firmware does your nuvi have? The early 750s with older firmware did exhibit long satellite lock times. An update could help.

Where in your auto do you operate the nuvi? Does your vehicle have a radio antenna or other potential interferring factor built into its windshield? This is another issue that's been reported.

In any event, it will take longer to get a satellite fix in a moving vehicle. If at all possible, try to get the fix before you start rolling.

My C580 works very well.

in play because yesterday, in Eastern PA in an area that is usually flawless for me I lost reception on my 530...it was stormy and very cloudy...usually the 530 is unaffected...has to be atmospheric.

Regards, Ted

I have a 350 and a 760. This is just how they all work. You will find that if you do not move until it acquires the satellites, it will acquire them MUCH faster than if you turn it on and start driving right away.

I believe the reason is that it remembers the last satellite position from when it was turned off. That's the first place it looks when it's turned on. If you move before it gets a lock, it has to download the positioning data all over again. Or something like that.

Try it. It rarely takes more than 30 seconds to get a lock if you don't move until you get it. It's better for the car to have a brief warm-up anyway.

I have noticed that the speed of satellite connection is sometimes related to where I place the unit on my dashboard. It reacts differently in different spots.

I would doubt that being overcast has much to do with satellite acquisition. GPS tecnlology was first developed for the military. Their systems rely heavily on it. If you look at a satellite weather view of the globe a large portion of the planet is often under overcast conditions. It that interfered with GPS acquisition, I think we would have heard more about it.

You are correct, overcast days do not come into play with GPSr's, however a thunderstorm with a cloud deck at 50,000 feet can raise havoc to any radio signal trying to penetrate it and could block satellite communication and cause your GPSr to lose it's lock briefly, while the storm or you are passing through the area.

Things to be aware of
** Are your window wipers interfering with the reception of signal?
** Is your car radio antenna embedded in the windshield, and your GPSr is located behind it?

Here is another scenario thats not all that different from above!

Those of you with Dish network or DTV have witnessed this before, the "SEARCHING FOR SATELLITE" while watching your favorite TV show and a thunderstorm decides to cruise through, and bam you lose you satellite lock. On overcast day nothing but clear pictures, even in a snowstorm, you might have to sweep the parabola of the dish every now and then, however the snow it's self while falling does not block the signal just like rain doesn't.

And for anyone interested:
http://www.landairsea.com/gps-tracking-blog/do-weather-condi...

Bob

It really doesn't speed up the amount of time to lock on the satellites, it just seems that way - turn the unit on when you put it on the dash. Then, while you are hooking up cables its looking for satellites and by the time you are ready to go, your NUVI says "Ready to Navigate"