USA Mobility, Inc. USMO, a leading provider of wireless messaging services, announced operating results for the quarter ended March 31, 2006. Reported revenue for the first quarter was $134.9 million, with EBITDA (Earnings before interest, tax, depreciation, amortization and accretion) of $38.6 million or 28.6 percent of revenue. Reported operating income was $19.8 million, and net income was $12.3 million, or $0.45 per share.