I have been able to get a satellite fix with the Hollux on the third and the fourth floors of the American Printing House for the Blind building. This is a large, densely packed structure and I was surprised and pleased to get a fix in the building. By the way, I found that I was located 32 feet from the American Printing House for the Blind (smile). However, it was great to be able to look at pois in the neighborhood from indoors. Terrie