Abstract: A portable device for detecting a predefined radio frequency transmission of electromagnetic radiation includes a housing; a controller situated within the housing; memory communicatively connected to the controller; an antenna connected to the controller and configured to receive the radio frequency transmission; and an audio-generating component connected to the controller. The controller is operative for sensing magnitude, duration, and/or repetition of the radio frequency transmission; identifying a class of the radio frequency transmission based on one of the magnitude, duration, and repetition associated with the radio frequency transmission; and causing the audio-generating component to output tones to provide aural discrimination of the class of the radio frequency transmission received by the portable device. A directional-sensing wideband frequency detection device is configured to obtain a net bearing of an emission source of an electromagnetic radiation transmission.

Abstract: A method and apparatus for preventing unwanted wireless networking data communications includes: a) generating at least one protocol data unit in an apparatus; b) ignoring one or more wireless data transmission signals in the predefined area; and c) transmitting the protocol data unit from the apparatus to the predefined area, whereby a first communications device situated within the predefined area and configured to wirelessly receive the protocol data unit is prevented from transferring data with a second communications device. Furthermore, the protocol data unit is transmitted in a wireless data packet, wherein the wireless data packet conforms to a wireless communication protocol utilized by the first communications device and the second communications device. The apparatus is also configured to transmit the protocol data unit to multiple channels within the channel spectrum utilized by the wireless communication protocol.