DavidEduardo said:
kilokat7 said:
KBRT just made it to West Michigan at 6am, new log, so it begs the question: Did I just hear the Catalina Island transmitter or the new one from the mainland? Scott's article mentioned the changeover would occur in February, so I'm very curious about their current pattern, power and location. Their signal has been in and out during the last hour or so, sometimes very strong. I'm tempted to send a reception report/recording to KBRT.
Catalina is directional east towards LA. The new site is directional west to LA.
If you heard it at 6 AM EST, it might have been a test of the new facility, even a non-directional test.
The official change over is still a week and a half away.
I wish I could be notified in advance of when these tests are.

I would like to have been able to check what their signal was like at my house a couple miles south of El Cajon, CA.
I am remembering now one day last month KBRT was significantly weaker than normal, but unfortunately I forget what day it was.
DavidEduardo said:
EJ204 said:
And I see KBRT is also boosting its daytime signal to 50,000 watts. How can they do that if they're on the same channel as KCBS and two channels away from KFMB?
KFMB and KBRT are both directional, and they are 20 kHz apart; many countries in the world have stations in the same city with 20 kHz separation: Mexico City has 100 kw on 690, 10 kw on 710 and 100 kw on 730 in the same market with no real issues.
KCBS's protected daytime contour is not overlapped by the KBRT signal, either the 10 kw Avalon one or the 50 kw Costa Mesa one.
KBRT, per the Crawford engineers, will have less signal towards San Diego with 50 kw than it did with 10 kw on Catalina. And maps show less signal towards San Francisco than with the island location and salt water path.
Also, as for 50kW co-channel stations within 400 miles, on 1580 there's KMIK in Tempe, AZ, and KBLA in Santa Monica, CA. Of course their groundwave contours don't overlap due to the high frequency. KMIK is a blowtorch here in El Cajon at night, and sometimes in midwinter has been heard at midday on top of KBLA (which is normally very faint here midday on good-quality portables anyway, and non-existent on cheaper ones).
Also I think they're more than 400 miles apart (but I don't expect more than 500), but on 830 there's KLAA Orange (transmitter across the 91 from KBRT's new site) and KFLT Tuscon, both 50kW omnidirectional daytime. Around sunset and sunrise, KFLT's religious programming is regularly heard here mixing with KLAA.
Also I never really noticed any issues with 1040 vs 1030 here in the San Diego area when 1040 was on. (They're silent now.)
Speaking of 50kW stations in close proximity, I was curious about something, David.

I know there are large cities with poor ground conductivity, but ..... Are there any cities on the planet you know of that combine absolutely
terrible ground conductivity (like what would make Long Island / Manhattan and the Coachella Valley look like saltwater) with a wide spread-out city (such that it'd take maybe 2 hours to drive across it on the highway NOT during rush hour)? Such that, for example & at least in the daytime (but of course not at night), you could have TWO (or more) co-channel omni-directional 50kW stations below 1200 kHz using half-wave antennas in the same city, so that they meet FCC Class A contour protection ratios (5 µV/m cannot overlap 100 µV/m), AND their 0.1 mV/m contours lie entirely within the official city limits?