EXHIBIT 21.1 

Subsidiaries of the Registrant

Subsidiary				Jurisdiction of Organization
Pinnacle Towers Canada Inc.				New Brunswick
Global Signal GP, LLC				Delaware
Global Signal Operating Partnership, L.P.				Delaware
Global Signal Holdings III LLC				Delaware
Global Signal Acquisitions LLC				Delaware
Global Signal Acquisitions II LLC				Delaware
Global Signal Acquisitions III LLC				Delaware
Global Signal Acquisitions Puerto Rico LLC				Delaware
Pinnacle Towers Acquisitions Holdings LLC				Delaware
Pinnacle Towers Acquisitions LLC				Delaware
Pinnacle Towers Asset Holding LLC				Delaware
Towers Finco LLC				Delaware
Towers Finco II LLC				Delaware
Towers Finco III LLC				Delaware
Pinnacle St. Louis LLC				Delaware
Global Signal Services LLC				Delaware
Pinnacle San Antonio LLC				Delaware
Pinnacle Towers IV Inc.				Florida
Coastal Antennas LLC				Delaware
Pinnacle Towers Limited				England and Wales
Global Signal Holdings II LLC				Delaware
Global Signal Holdings I LLC				Delaware
Pinnacle Towers LLC				Delaware
Aircomm Of Avon, LLC				Connecticut
Intracoastal City Towers LLC				Delaware
High Point Management Co. LLC				Delaware
Coverage Plus Antenna Systems LLC				Delaware
GoldenState Towers LLC				Delaware
Tower Ventures III, LLC				Tennessee
TVHT, LLC				Tennessee
Tower Systems LLC				Delaware
Tower Technology Company of Jacksonville LLC				Delaware
Radio Station WGLD LLC				Delaware
Interstate Tower Communications LLC				Delaware
ICB Towers, LLC				Georgia
Pinnacle Towers III LLC				Delaware
Pinnacle Towers V Inc.				Florida
Shaffer & Associates, Inc.				Illinois
Sierra Towers, Inc.				Texas
Global Signal REIT Savings TRS, Inc.				Delaware
Global Signal Holdings IV LLC				Delaware
Global Signal Holdings V LLC				Delaware
Global Signal Acquisitions IV LLC				Delaware