ZURICH (Reuters) - The Swiss federal government projected a 2019 budget surplus of 2.8 billion Swiss francs (2.38 billion pounds), more than double the initially budgeted amount, thanks to expected tax revenue and the auction of mobile communications frequencies. The increase is due to higher expectations for proceeds, notably from the direct federal tax, the mobile radio frequency auction and a competition authority fine on banks, as well as on lower expected expenses, the government said on..