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.
I am wanting to make a "Wave Bubble" or Cell Jammer but I would like the radius of the "jammed" area to be about 1.5 feet. What parts would I have to change? Just less power? Any thoughts are appreciated.
I guess you could ignore the amplifier, which means you can also not bother with the 5V power supply. Alternatively you could just leave the antennas off. But there is another way. If you want to jam a phone/GPS that's THAT close, just turn the phone/GPS off. You'll save ~$200.