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) NINE MONTHS ENDED SEPTEMBER 30, --------------------- 2001 2002 ---- ---- Computation of Earnings: Income (loss) before income taxes and minority interests $(252,446) $(235,522) Add: Fixed charges (as computed below) 241,946 254,862 --------- --------- $ (10,500) $ 19,340 ========= ========= Computation of Fixed Charges and Combined Fixed Charges and Preferred Stock Dividends: Interest expense $ 150,836 $ 155,975 Amortization of deferred financing costs and discounts on long-term debt 68,085 74,859 Interest component of operating lease expense 23,025 24,028 --------- --------- Fixed charges 241,946 254,862 Preferred stock dividends, net of gains on repurchases of preferred stock 58,770 11,034 --------- --------- Combined fixed charges and preferred stock dividends $ 300,716 $ 265,896 ========= ========= Ratio of Earnings to Fixed Charges -- -- ========= ========= Deficiency of Earnings to Cover Fixed Charges $ 252,446 $ 235,522 ========= ========= Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends -- -- ========= ========= Deficiency of Earnings to Cover Combined Fixed Charges and Preferred Stock Dividends $ 311,216 $ 246,556 ========= =========