Where mobile broadband speeds vary around Dublin

I spent lots of last week comparing all three networks' mobile broadband products in different locations around the city for a newspaper article. Speeds vary substantially. In Dublin 9 (Drumcondra), O2 reigns supreme with speeds of over 2Mbs. In Harcourt Street, though, it shrinks to under 0.5Mbs. 3, by comparison hits over 1Mbs in Harcourt Street but falls to about 0.6Mbs in Drumcondra. And it's a similar story around different parts of the city.

Incidentally, 3 is set to switch on its extra mobile broadband speed (x2) "any day now", according to executives in the network,