Abstract: A suction nozzle holster whose upper rim is provided with a notch into which a suction hose can be forced in order to constrict the hose and, hence, curtail the vacuum conditions in a suction nozzle.

Abstract: A suction nozzle holster device is provided with three possible operating positions through the use of a mounting channel component having a left, a center and a right key plate/key nub system that can each be respectively inserted into a cooperating keyway slot/nub receiver opening system mounted on a rear portion of a holster mounting component of the device. This arrangement gives the holster device three distinct operating positions.

Abstract: A radio frequency (RF) source detector detects and analyzes RF signals in order to determine the source of interference. The source detector is useful for installing and troubleshooting a wireless local area network (WLAN) or similar communication devices. The detector includes a receiver to receive RF signals from unknown RF sources, a processor for determining the level and characteristics of the RF signals and for determining the identities of unknown RF sources, and a display on which the processor displays the identities of the RF sources.