"If 1260 Khz. becomes KYA we still cannot expect them to play any 50s 60s or 70s favorites.
The rules regarding 3-letter calls is that you cannot have them. It can only be by waiver as KHJ did in Los Angeles. The original KYA with religion everyday!"
Nostalgia is a nice thing, but why would anybody care that a religious station has heritage call letters? Do you care that 1610 is KDIA? That station has no relation to the great soul station 1310 KDIA of the 60s and 70s. 1260 will have no relation to "the Boss of the Bay."
If you need a nostalgia fix, listen to a classic aircheck on the Bay Area Radio Museum or ReelRadio.com.