KOGO (AM) 600 kHz began nighttime digital broadcasts on the first legal night, September 14, 2007, confirms Clear Channel San Diego Market Director of Engineering John Rigg. They haven’t experienced any problems or heard any complaints to date. John said tuning around the dial, he was surprised to receive a steady HD-radio signal from KFBK at 1530 kHz. He was also able to clearly receive from El Cajon the analog-only KTAR Phoenix at 620 kHz, alternate channel from the KOGO carrier.
Other digital outlets picked up locally include KNX Los Angeles at 1070 and KSL Salt Lake at 1160. No other local AM stations have yet installed IBOC equipment.