Abstract: A mast that includes an omnidirectional antenna disposed therein and a GPS antenna coupled with the mast. Both the omnidirectional antenna and the GPS antenna preferably are protected from the environment, with the omnidirectional antenna being located above the GPS antenna when the mast is positioned vertically.

Abstract: An apparatus and method for providing a video or audio record of a predetermined activity close in time to a preselected triggering event comprising a video or audio detection apparatus, control circuitry for developing a stream of electronic data representing a continuous sequence of audio or video images in real time, a circular data storage buffer for receiving the data in real time, an event detection mechanism for sensing occurrence of the predetermined triggering event so as to cause the control circuitry to freeze the contents of the circular buffer at some time adjacent to the occurrence of the triggering event, and means for downloading the stored data to a means for perceiving it such as a personal computer.