Citing strong performances by existing operations and the addition of three companies bought last year, Glenn Buell Jr., Comarco Inc. chairman and president, said Thursday that he expects the company to record significant year-to-year gains in second-quarter net income and more than a doubling of revenue. Buell told shareholders at the Anaheim defense contractor's annual meeting Thursday that the company expects to post revenue of $18 million for the quarter ended July 31, compared with the $8.1 million recorded in the comparable fiscal 1985 period. The company would say only that it expects "substantially higher" pretax income than the year-ago period. Last year, Comarco recorded net income of $446,000. The company expects to release audited figures for the quarter by Sept. 15. The three companies Comarco bought last year "are continuing to record improved results," Buell said.