San Diego Signal Scofflaws

[Signal Geek]

I think those cities or numbers might be reversed. Regardless, KEZY and KNSN do not have any meaningful overlap. And the KNSN signal is not good north of La Jolla in my listening and basically non-existent in North County in multiple locations I have tried to hear it, including around Rancho Santa Fe, Encinitas, Carlsbad, Vista, etc. on a good car radio.

KNSN 1240 really doesn't need to have good coverage to the north, because it's a repeater of 50kw 740 KBRT in Orange County. Many listeners to the north get a stronger signal from KBRT.

 

[K.M. Richards]

KNSN 1240 really doesn't need to have good coverage to the north, because it's a repeater of 50kw 740 KBRT in Orange County. Many listeners to the north get a stronger signal from KBRT.

What do they air after sunset, when KBRT signs off?

 

[Michael Rivers Kramer]

No, KEZY is in San Bernardino and KNSN is in San Diego.


And the simplified contour maps at Radio-Locator show the only actual signal overlap is indeed in Temecula, out in fringe coverage area:

View attachment 2816
View attachment 2817

So it would be even scarier to see Longley-Rice maps of them.

There aren’t any Longly Rice maps for AM stations. AM signals rely on ground conductivity during the day, not line of sight.

 

[Signal Geek]

What do they air after sunset, when KBRT signs off?

KBRT no longer signs off at sunset. They just drastically reduce power, to protect KCBS/San Francisco -- which booms into Southern California at night.

 

[K.M. Richards]

There aren’t any Longly Rice maps for AM stations. AM signals rely on ground conductivity during the day, not line of sight.

I must have remembered that somewhere in the back of my mind because I didn't look for any such mythical creatures. Thanks for confirming that sometimes I don't always know what it is that I know ... or don't, as the case may be!

 

[K.M. Richards]

KBRT no longer signs off at sunset. They just drastically reduce power, to protect KCBS/San Francisco -- which booms into Southern California at night.

Not anymore, according to this post (and subsequent discussion) a few weeks ago.

 

[Signal Geek]

Not anymore, according to this post (and subsequent discussion) a few weeks ago.

Wow, I didn't know KBRT had turned off their night power. Thanks K.M. for letting me know. Wish that nugget hadn't been buried within the "97.1 FM becomes KNX" discussion that sparked hundreds of comments. The KBRT news would have been worthy of a new, separate thread.