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Old 07-21-2016, 03:32 PM   #21
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That's why they all have disclaimers warning us to check our route on other sources. I have one of the Good Sam Magellan units and its had lots of errors when searching for a campground as a POI. Not too bad when I put in the street address. It also doesn't seem to be programmed for low underpasses, even though I've set it for my TT height. The Tom Tom from my car seems to be more accurate than the Magellan, so now I use that when towing. Interestingly, this week I was with my wife in her GPSless car, so I used Google maps on my smart phone for the frst time. It recalculated very quickly when we varied from the mapped route. Much faster than either GPS unit.
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Old 07-21-2016, 03:38 PM   #22
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That's why they all have disclaimers warning us to check our route on other sources. I have one of the Good Sam Magellan units and its had lots of errors when searching for a campground as a POI. Not too bad when I put in the street address. It also doesn't seem to be programmed for low underpasses, even though I've set it for my TT height. The Tom Tom from my car seems to be more accurate than the Magellan, so now I use that when towing. Interestingly, this week I was with my wife in her GPSless car, so I used Google maps on my smart phone for the frst time. It recalculated very quickly when we varied from the mapped route. Much faster than either GPS unit.
Cell networks much faster than satellite, and no propagation.
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Old 07-21-2016, 07:21 PM   #23
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Don't forget to update your GPS. Most manufacturers recommend at least every six months. There are a lot of folks out there who never do and may not know how (It isn't as easy as you might think.) Also, be sure to do an update as soon as you buy it. Possible that it's been a long time since it came on the boat from China. If one significant road changes, it can cause the data logic to pick an entirely different route through that area. I hate to admit it, but we use three at a time, plus a paper map. Our primary and most reliable is the Good Sam Rand McNally. Yet, we've been in many situations where all three say something different! (Although I don't use it much, I have to agree Google maps is pretty reliable.)
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Old 07-21-2016, 07:48 PM   #24
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My biggest issue with Google Maps is the connection has not been consistent. Many areas we have been in the last weeks Google has done nothing but tell me it is searching and then time out. As for the Garmin unit has life time maps and is updated every quarter when the new update is available. I still think there has to be something more intuitive that will route you on non interstate roads yet keep you off paved pig paths.
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Old 07-21-2016, 09:26 PM   #25
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One of the best aids for RV travel if you want to avoid the interstate system is the Rand McNally Trucker's Road Atlas. This book has all of the main secondary roads that can easily handle 18 wheelers clearly marked. All of these roads are suitable for RVs. The book also has a list of low clearance bridges. I've seen it at many truckstops.

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Old 07-21-2016, 09:42 PM   #26
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Don't forget to update your GPS. Most manufacturers recommend at least every six months. There are a lot of folks out there who never do and may not know how (It isn't as easy as you might think.) Also, be sure to do an update as soon as you buy it. Possible that it's been a long time since it came on the boat from China. If one significant road changes, it can cause the data logic to pick an entirely different route through that area. I hate to admit it, but we use three at a time, plus a paper map. Our primary and most reliable is the Good Sam Rand McNally. Yet, we've been in many situations where all three say something different! (Although I don't use it much, I have to agree Google maps is pretty reliable.)
Good point. I spent 20 minutes on phone with Garmin Support yesterday, and another 5 hours of being plugged up running updates.........but I'm tired of my GPS not knowing of the new left exit 10 on I-40 in Memphis, and the difficulty when the "left lane is closed"!!! LOL

But very good advice. The LMT designation on Garmins is "Lifetime Maps and Traffic". Make sure when you get one, that it has that designation.
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