Info to me back when KURS signed on was 1040 Cd. Obregon, Mx was the reason only 47 watts was authorized. WHO was intermittent due to
this Gulf of Ca. station coming in nicely. KURS's coverage was so bad, they applied for a power increase, going from 47 watts, to a whopping 61 watts.
That helped, but that was not satisfactory, so it was set up to switch back to full power within 1 hour or so after sunset.
Quetzel was fined, I believe $20k for that incident, and appealed for a reduction, but did not pay up til next license renewal.