What sttion would that be? I can get several L.A..stations here near the southeast corner of 92020 at night, including 570 KLAC, 640 KFI, 670 KIRN, 710 KSPN, 790 KABC, 830 KLAA, 870 KRLA, 930 KHJ, 980 KFWB, 1020 KTNQ, 1070 KNX, 1110 KDIS, 1150 KTLK, 1190 KXMX, 1260 KGIL, 1330 KWKW, 1540 KMPC, 1580 KBLA and 1650 KFOX. As for others, several occasionally make appearances here, but are usually blocked by co-channel interference or IBOC, including 590 kTIE, 610 KAVL (KOGO is west of me so I could null them some, but it's stiill strong), 1230 KYPA, 1280 KfRN, 1300 KAZN, 1370 KWRM, 1390 KLTX, 1430 KMRB, 1460 KTYM and 1480 KVNR.
Is it one of those, or another one?