Abstract: This invention is an apparatus for detecting and pinpointing the sources of sparking electromagnetic RF radiation emanating from high and extra high voltage power lines in the presence of high level corona (RF) radiations which are often present on such lines. It uses a unique metal and plastic rod antenna which will not emit corona when brought up close to a high voltage conductor, and which acts as an attenuator and sensitivity indicator when pushed in steps into a special metal attenuator collar and into its metallic housing. Within the housing, the antenna rod is connected to receiving circuitry which provides sound output of the source noise-signal detected. The housing with its adapter may be removably attached to the tool holder of a standard power line hot stick to permit safe use of the apparatus as a proximity detector in pinpointing sources on power lines. The apparatus receives at a nominal UHF frequency of 430 MHz to permit detection of sparking without detecting corona.

Abstract: A portable low-output-level generator producing simultaneous audio, ultrasonic and RF noise for the test and demonstration of instruments designed to locate electrical interference, for demonstration of the broad frequency spectrum of electrical noise radiation, for antenna tests, to test the EMI susceptibility of electronic equipment, and to illustrate the effects of said noise on TV and radio receivers. This generator is enclosed in a housing and communicates audio and ultrasonic sounds to the observer via a vibrating diaphragm mounted on the face of the housing, with means provided to attenuate the audio sounds relative to the ultrasonic, and this generator radiates RF from a retractable antenna mounted on and extending outward from the housing.

Abstract: A portable electrical systems interference detector and locator comprises a circuitry housing box which mounts a two-piece antenna having forward section formed of dielectric material and a metal aft section which mounts both a folded dipole UHF driven antenna element and an active VHF driven extendable dipole antenna element. The locator includes circuitry by which both UHF and VHF inputs are received, amplified, and delivered to a field strength meter. Audio noise and/or signal output from the meter is delivered through an audio amplifier to a speaker for use by an operator for the purpose of locating the direction of strongest noise and/or signal whereby the location of a sparking or other defect in an electrical system can be ascertained.

Abstract: An ultrasonic detecting transducer and a VHF detecting antenna for locating electrical systems defects are mounted on a probe housing and connected through an RF detector to an audio amplifier and speaker contained in the housing, the speaker communicating with the adjacent connected end of an elongated, hollow, electrically non-conductive, substantially rigid pole the opposite, outer handle portion of which pole is rotatable relative to the inner portion and is perforated to allow sounds from the speaker to be heard by the operator grasping the handle portion. A switch is provided on the housing for shorting the VHF detecting antenna when the ultrasonic detecting component is to be used.