Al...
Read this link ... It may answer your questions.. http://hubpages.com/hub/how-altitude-affects-plasma-tvs
You will have to copy and paste the link for some reason I could make it an active link for you.


QUOTE=BoaterAl;74471]Traveling back from Calif with high winds we have pulled off the road for the night. When I saw a (probably empty) 53 foot trailer rear duals lift off the highway that was enough driving for one day.

Question..... at 5000 ft should we use the Plasma TV ?

Thanks,
AL[/QUOTE]