EXHIBIT 12.1 CROWN CASTLE INTERNATIONAL CORP. COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES AND EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS (DOLLARS IN THOUSANDS) SIX MONTHS ENDED JUNE 30, -------------------- 2001 2002 ---- ---- Computation of Earnings: Income (loss) before income taxes and minority interests $(153,591) $(170,070) Add: Fixed charges (as computed below) 155,180 168,725 --------- --------- $ 1,589 $ (1,345) ========= ========= Computation of Fixed Charges and Combined Fixed Charges and Preferred Stock Dividends: Interest expense $ 94,952 $ 103,510 Amortization of deferred financing costs and discounts on long-term debt 44,878 49,197 Interest component of operating lease expense 15,350 16,018 -------- --------- Fixed charges 155,180 168,725 Preferred stock dividends 39,770 40,966 --------- --------- Combined fixed charges and preferred stock dividends $ 194,950 $ 209,691 ========= ========= Ratio of Earnings to Fixed Charges -- -- ========= ========= Deficiency of Earnings to Cover Fixed Charges $ 153,591 $ 170,070 ========= ========= Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends -- -- ========= ========= Deficiency of Earnings to Cover Combined Fixed Charges and Preferred Stock Dividends $ 193,361 $ 211,036 ========= =========