A call from a listener Friday, February 15, led Clear Channel’s local Director of Engineering, John Rigg, to go on a treasure hunt.
He was told that when listening to KHTS 93.3 MHz in a car on interstate 805 east of the University City neighborhood in San Diego, they heard a loud fluttering noise. The noise, also taking out 93.1, could be heard jamming 93.3 as far away as Kearny Mesa.
John and RF specialist Stephen Frick grabbed their spectrum analyzer and a yagi and headed out to track down the interference. It didn’t take Steve and his directional antenna long to find a possible source of the signal off Whipple Avenue just three blocks away from the freeway. A tall mast and suspicious antenna loomed some 70 feet above a home in the neighborhood. John knocked on the door there and was loudly told from inside that no one was home.
John called the FCC’s local office Monday. As early as Wednesday, an inspector told him that the owner of the antenna was known from previous contact, and after conducting a home visit, the jamming noise disappeared.