Edition 25/2008 of the C't, a renowned German computer magazine, contains a number of interesting articles around mobile Internet access. In one of them, 3G USB dongles have been tested and those capable of 7.2 MBit/s in downlink (HSDPA category 7/8) have reached a maximum speed of 5.76 MBit/s. Impressive, that's even higher than what I experienced myself. The test were performed on the Hanover exibition ground, where both T-Mobile and Vodafone have upgraded their 3G network and their base station backhaul to support these speeds. I assume the tests were done while no exhibition was in progress, i.e. no traffic in the cell and also no or only little traffic in other cells in the neighborhood, which means only little inter-cell interference. They also tested HSUPA and achieved uplink data rates of around 1.8 MBit/s. Again, very impressive for a live network setup.