Rf leak detector

Details Rf leak detector Rf leak detector

G - Physics

01

R

324/58.02

G01R 31/08 (2006.01) H04B 3/46 (2006.01) H04N 7/10 (2006.01) G01R 31/12 (2006.01)

Patent

CA 1069978

ABSTRACT The detector is primarily useful in detecting RF leaks in a TV cable. RF leaks are detected by transmitting a coded signal and using a very narrow band receiver to detect the code thereby differentiating between small amounts of RF leakage from the cable and extraneous locally generated RF energy. The leakage from the TV cable may be due to small cracks in the cable, loose fittings or other non-RF tight conditions. The detector is a three-part system including a transmitter, a remote cable powered preamp and antenna assembly, and a narrow band receiver providing an audio output. The transmitter is designed to be permanently installed at the head end location and is modulated with a unique audio tone. An RF leak is detected by moving the remote preamp and antenna assembly along the cable sheath. When the remote preamp and antenna assembly picks up leakage RF energy, the unique audio tone will be detected, and the detected audio signal fed to a loud speaker or earphones. The audio tone is readily recognized by the operator.

276554

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