Exhibit 11.1 WIRELESS TELECOM GROUP, INC. COMPUTATION OF PER SHARE EARNINGS (UNAUDITED) For the Three Months For the Nine Months Ended September 30, Ended September 30, ---------------------- ---------------------- 1999 1998 1999 1998 ---- ---- ---- ---- Income from continuing operations $ 668,596 $ 107,208 $1,846,967 $1,005,502 Income (Loss) from discontinued operations and gain on sale of test equipment business (16,934) (242,397) 3,578,737 (313,827) --------- ---------- ---------- ---------- Net Income (Loss) $ 651,662 $ (135,189) $5,425,704 $ 691,675 ========= ========== ========== ========== BASIC EARNINGS (LOSS): Weighted average number of common shares Outstanding 17,173,988 17,557,298 17,416,122 17,533,180 ========== ========== ========== ========== Basic earnings (loss) per common share: Continuing operations $0.04 $ 0.00 $0.11 $ 0.06 Discontinued operations 0.00 (0.01) 0.20 (0.02) ---------- ---------- ---------- ---------- $0.04 $(0.01) $0.31 $ 0.04 ========== ========== ========== ========== DILUTED EARNINGS (LOSS): Weighted average number of common shares Outstanding 17,173,988 17,557,298 17,416,122 17,533,180 Stock Options 84,401 - 67,385 41,344 ---------- ---------- ---------- ---------- Weighted average number of common shares outstanding, as adjusted 17,258,389 17,557,298 17,483,507 17,574,524 ========== ========== ========== ========== Diluted earnings (loss) per common share: Continuing operations $0.04 $ 0.00 $0.11 $ 0.06 Discontinued operations 0.00 (0.01) 0.20 (0.02) ---------- ---------- ---------- ---------- $0.04 $(0.01) $ 0.31 $ 0.04 ========== ========== ========== ========== 13