Radio advertising sales are on the upswing, according to RAB. For the month of June, combined local and national revenues increased 3% when compared to year ago levels. Local dollars increased 2% during June; national sales jumped 7%. For the first six months of this year, national revenues showed a 5% upswing while local numbers remained flat. Local and national sales together were running 1% ahead of the first half of 2001. From a quarterly perspective, local revenues showed a 2% boost and national sales jumped 7% during the second quarter of 2002, when compared against the second quarter of 2001. Combined local and national figures for Q2 of 2002 were up 3%.