WFAN is owned by CBS so the NBC news wouldn't have been from them. Usually they ID as 'Sports Radio 660 the Fan, WFAN' The Spanish was most likely a Mexican station unless KXOR was running day power at night. If David Eduardo's around, he may be able to shed some light on which Mexican station(s) could be heard in Vallejo at night. Radio-locator's data tends to be very out-dated on stations outside of the US (since it relies on FCC data)