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Old 04-14-2017, 08:18 PM   #1
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garmin RV 770 LTM-S

I got the new GPS so far not impressed. Just been using it locally. Poor route selections, had us going down roads that the GPS deemed unknown RV accessibility. When better roads are shorter, wider and straighter. Even the road leading into campground was "unknown RV accessibility"??? Gives you a warning for "sharp curves ahead" when it's a slight curve at BEST but NO warning at the real sharp curves. RR track warnings after you have crossed them.

Now the latest, we were 4 miles from a place just was not sure if it was north or south of us. So I put into the GPS it says go 8 miles south. Second guessing myself I went the 8 miles south then it says to make U turn go north 10 mi. We passed 10 or crossovers could have U turned at any of them, but no it picks the one crossover where posted "no truck U turns". Concrete curbing all around no way you U turn with TT. Are you kidding me right now?
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Old 04-14-2017, 09:53 PM   #2
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That's sad to hear. Seems any of the RV type GPS units have some complaints. I am looking at the Garmin RV 660. But I assume similar problems will arise.
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Old 04-14-2017, 10:07 PM   #3
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We have a Garmin 5970 GMT or something like that. It has never put us in a bad situation and handles the faster/shorter selection very well. My wife argues with it all the way across country while she flips through the Atlas book.
Every time the GPS says something, I always reply "yes dear". Makes the DW boil! It's about 5 years old and works great as do all my other Garmin instruments on the boat. Don't know anything about the RV GPS.
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Old 04-14-2017, 10:14 PM   #4
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I keep my RV760 in auto mode. Gives better routes, I think.
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Old 04-15-2017, 08:40 AM   #5
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Quote:
Originally Posted by Blackhat6mike View Post
We have a Garmin 5970 GMT or something like that. It has never put us in a bad situation and handles the faster/shorter selection very well. My wife argues with it all the way across country while she flips through the Atlas book.
Every time the GPS says something, I always reply "yes dear". Makes the DW boil! It's about 5 years old and works great as do all my other Garmin instruments on the boat. Don't know anything about the RV GPS.
And I thought my wife was the only one that argues with the GPS lady!
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Old 04-15-2017, 12:10 PM   #6
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We have particularly found that it's often better to have latitude and longitude for campgrounds, as well as their own instructions, since their addresses may be unrecognizable to the Garmin Lady. Had a campground that she thought was on the side of the Interstate highway; another where she thought it was on a dirt path to nowhere, but it was actually several miles down the road. Yet another was probably 60 or so miles away! Directions and signs got us there. Overall we like our GPSs, but they aren't perfect and need sanity checks. They've done great in some places with complicated interchanges and intersections where map-reading would take too long.
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Old 04-15-2017, 12:25 PM   #7
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We have been using the Garmin Dezl 560. This one is for truckers. We have been very satisfied with the unit.
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Old 04-15-2017, 12:30 PM   #8
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All GPS has its limitations but this sounds like it needs an update of software. Check with Garmin customer support. My Magellin acted up when I first got it and an update improved things.
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Old 04-15-2017, 12:40 PM   #9
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Garmin RV 770

We bought the same unit and found similar issues. It all seems to be based on how you set up your rig configuration. I put in my rig weight (Truck & Trailer) from the CAT Scale (11,800) and my routing was very strange. Turns out that several of the roads I normally take are limited to 5 tons. I put in the length at 45' - overall length of both truck and trailer. That seems to have forced the unit to route only right turns. I reduced the weight to 7500 pounds and the length to 25' (length of trailer) and it now seems to give me reasonable routing.
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Old 04-15-2017, 12:43 PM   #10
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Settings

You must go to settings and put in the length and height and be liberal. Also make sure your settings are not AUTO as that is for cars not trucks and campers and motorhomes. You must also tell it the class of roads to avoid.....like toll roads, tunnels , bridges etc.....
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