First time I heard XERF-1570 was in December 1967 on a clock radio I got for Christmas, and I would guess it was 250 kw then or at least 100 kw!! Very strong. Seemed quite weak when I heard it later in the early-1980s. I too recall how easy many of the Bay Area stations came in at night, thought KABC-790 interfered with KGO-810.
I suppose I should clarify an earlier remark. I was a casual DXer in the '60s and '70s, mostly just tuning to powerful clears like KOA-850, KSL-1160, etc. I was very serious about DXing from 1980-'85, using a more expensive radio and antenna, and now I just do it when I have time, mostly on my car radio, though on my Sony, I can still hear the 500 kw JOAK on 774 khz. from Japan every so often between 2-6 am Pacific Time. Someone mentioned WBZ-1030. I only heard that one once, when KTWO was off, but it was not easy. Never got WSM-650 except at 29 Palms, CA using a long Beverage antenna, where lots of eastern clears came in loud, like the old WNBC-660, WCBS-880, etc. Seems like I got WSB-750 fairly often too at home in Anaheim.
Not to get off the topic, but I noticed another thread about 740 on Catalina/Avalon. How did that thing ever get on the air in 1952, with KCBS-740? Also, I thought their calls K-BIG was because of their BIG 10 kw directional signal over salt water to the mainland. If they move to the L.A. basin with a new xmtr, it won't be as good as the previous 10 kw signal, will it? I do recall around 1984-'85 or '86 when the FCC let many daytimers stay on after dark with low post-sunset power. Seems like KBRT-740 tried it for a while with low power, but after so much interference from KCBS, they went back to a sunrise to sunset operation.
Jim Hilliker
I suppose I should clarify an earlier remark. I was a casual DXer in the '60s and '70s, mostly just tuning to powerful clears like KOA-850, KSL-1160, etc. I was very serious about DXing from 1980-'85, using a more expensive radio and antenna, and now I just do it when I have time, mostly on my car radio, though on my Sony, I can still hear the 500 kw JOAK on 774 khz. from Japan every so often between 2-6 am Pacific Time. Someone mentioned WBZ-1030. I only heard that one once, when KTWO was off, but it was not easy. Never got WSM-650 except at 29 Palms, CA using a long Beverage antenna, where lots of eastern clears came in loud, like the old WNBC-660, WCBS-880, etc. Seems like I got WSB-750 fairly often too at home in Anaheim.
Not to get off the topic, but I noticed another thread about 740 on Catalina/Avalon. How did that thing ever get on the air in 1952, with KCBS-740? Also, I thought their calls K-BIG was because of their BIG 10 kw directional signal over salt water to the mainland. If they move to the L.A. basin with a new xmtr, it won't be as good as the previous 10 kw signal, will it? I do recall around 1984-'85 or '86 when the FCC let many daytimers stay on after dark with low post-sunset power. Seems like KBRT-740 tried it for a while with low power, but after so much interference from KCBS, they went back to a sunrise to sunset operation.
Jim Hilliker