EXHIBIT 12

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)

	Years Ended December 31,
	2003			2004			2005			2006			2007
Computation of earnings:
Income (loss) from continuing operations before income taxes, minority interest and cumulative effect of change in accounting principle	$	(462,448	)	$	(306,632	)	$	(392,043	)	$	(48,373	)	$	(317,003	)
Add:
Fixed charges (as computed below)		300,460			250,077			178,982			211,188			454,731
Subtract:
Interest capitalized		—			—			—			(1,295	)		(1,406	)
	$	(161,988	)	$	(56,555	)	$	(213,061	)	$	161,520		$	136,322
Computation of fixed charges and combined fixed charges and preferred stock dividends:
Interest expense	$	186,675		$	197,258		$	126,646		$	153,722		$	329,610
Amortized premiums, discounts and capitalized interest expense related to indebtedness and dividends on preferred stock		72,159			9,512			7,160			8,606			20,649
Interest capitalized		—			—			—			1,295			1,406
Interest component of operating lease expense		41,626			43,307			45,176			47,565			103,066
Fixed charges		300,460			250,077			178,982			211,188			454,731
Dividends on preferred stock and losses on purchases of preferred stock		55,897			38,618			49,356			20,806			20,805
Combined fixed charges and preferred stock dividends	$	356,357		$	288,695		$	228,338		$	231,994		$	475,536
Ratio of earnings to fixed charges		—			—			—			—			—
Deficiency of earnings to cover fixed charges	$	462,448		$	306,632		$	392,043		$	49,668		$	318,409
Ratio of earnings to combined fixed charges and preferred stock dividends		—			—			—			—			—
Deficiency of earnings to cover combined fixed charges and preferred stock dividends	$	518,345		$	345,250		$	441,399		$	70,474		$	339,214