After failing to attract a major wireless carrier as its partner, Crown Castle pulled the plug on its proposed Modeo mobile TV network on Monday, as it announced plans to lease spectrum that had been intended for Modeo to a venture consisting of investment firms Telcom Ventures and Columbia Capital. The spectrum, consisting of channels in the 1670-1675 MHz band, was purchased in 2003 by Crown Castle, which paid $12.6 million for the spectrum at an FCC auction. Officials of Telcom Ventures and Columbia, which will pay $13 million per year to lease the spectrum, offered no comment on how they will use the channels. Crown Castle, an operator and manager of more than 22,000 cellular phone towers throughout the U.S., had conducted tests of the Modeo system using the Digital Video Broadcasting-Handheld (DVB-H) standard endorsed earlier this month by the European Commission. Sources say, however, that Qualcomm—Modeo’s principal competitor—had recently signed contracts with Verizon Wireless and AT&T for the carriage of Qualcomm’s MediaFLO service, effectively locking Modeo out of markets served by Verizon and AT&T. Crown Castle’s decision leaves HiWire, the proponent behind the on-demand wireless video service known as “MobiTV,” as the remaining competitor against MediaFLO.