The operation of transmitters designed to jam or block wireless communications is a violation of the Communications Act of 1934, as amended ("Act"). See 47 U.S.C. Sections 301, 302a, 333. The Act prohibits any person from willfully or maliciously interfering with the radio communications of any station licensed or authorized under the Act or operated by the U.S. government. 47 U.S.C. Section 333. The manufacture, importation, sale or offer for sale, including advertising, of devices designed to block or jam wireless transmissions is prohibited. 47 U.S.C. Section 302a(b). Parties in violation of these provisions may be subject to the penalties set out in 47 U.S.C. Sections 501-510. Fines for a first offense can range as high as $11,000 for each violation or imprisonment for up to one year, and the device used may also be seized and forfeited to the U.S. government.
Well technically the wavebubble is a UHF jammer. You'd need to change the VCOs so that you'd cover the 600-900MHz bands but that should be all that's nessesary. A ROS-1200W+ will go from 612MHz to 1200MHz, but have a look about on the http://www.minicircuits.com website, bearing in mind you have a Vtune of 28Volts and Vsupply of 12Volts.