NUVI 660 and tunnels
Sat, 03/17/2007 - 6:59pm
 17 years
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Is it just me or does the 660 now have a 'predictive' feature when going through tunnels. I drive through Boston and its tunnels (dodging ceiling tiles and waterfalls) quite frequently. I know that I used to get the "Lost Satellite Reception" about 1/4 the way through - understandably since you travel over 100' underground. I can't say when a change may have occured, but today I did not get the message and it showed a steady spead (the speed I entered the tunnel at) the entire 2 or so miles.
I don't see this change on any of the version updates, so it makes me go hmmmmm.
Nuvi 660 And Tunnels
Seems it has an internal timer possibly a minute or less and until it times out it looks like it is acting normally- I don't think it has any predictive abilty. I also go through a tunnel every day - sometimes it will time out other times not. I think it has more to do with how long it takes to get through the tunnel.
I also notice this in my garage when I have it running on the outside. It will take a while inside before it indicates poor satellite reception.
Garmin Nuvi 660,Software Ver. 3.2, Audio 1.8, GTM 3.7, GPS 2.9, BT 2.4, NA Map v8: Mapsource; Cingular Treo 650
not sure
It's acting a bit different since an update was done. The Boston tunnels are over 2 miles long and it would "lose reception" or time out as you say, about 1/4 mile into it. Now it makes it all the way through. Maybe they increased the time, which would make it act 'predictive.' I'll be going through a couple more times next week and I'll try some different things and report. May be because I was following a route, I'll try without and see if there is a difference.
Garmin Quest/Quest2/Nuvi660/Nuvi755T