nmoore6676 said:
KLAC is only 5kw and directional, at night, as well. All of the other "big signals" have to reduce power and run tightly directional at night. KFI is presently also at half power due to the tower collapse so that would leave only KNX, the sister station to KFWB, as the 50,000 watt blowtorch in town.
The factors are more than power.
1. 1 kw on 540 covers like abut 50 kw on 1600, all other things equal.
2. The conductivity of the transmitter location is very important. KABC's site is much better than KFWB's. KFI's is better than 710, 1110, 1540, etc.
3. The directionality may favor a station... like KTNQ which sents the equvalent of about 200 kw over LA.
4. Location of the site. KFI's site is much nearer being at the population center of the market than KNX, which loses 60% of its signal over water.
5. The efficiency of the antenna system is also a factor... half wave towers create greater coverage for the same power than quarter wavers.
So, even at 25 kw (a 25% reduction in coverage from 50 kw) KFI covers more and better than KNX due to location, conductivity, and lower dial position.
KLAC and KNX, in fact, have, for any power level, nearly identical coverage except for the fact that KNX extends a bit more on the shoreline up and down the coast due to the Torrance transmitter location. 570 5 kw on 570 is equivalent to abut 40 kw on 1070, in fact.