1470's (WCWR) signal was not any better in those days, but......... people in most of Tampa could pick them up and people in Tampa and most of St. Petersburg listened. At that time radios (even transistor radios) had better senstivity and selectivity than most radios made today. (where, the AM band is an afterthought) and you certainly would not have had interference from computers, the new light bulbs and 2 zillion remotes etc.
WLCY 1380 was still number one in the ratings though, mostly by virtue of the stronger (non-directional daytime signal) and also the fact they were the only rock station that was not limited to daytime only operation; unless you count WKXY 930 out of Sarasota, which didn't come in so well in St. Pete at night.
WFSO 570 was wonderful; Tedd Webb was also on the air there, but at that time their tower was where the current 1040 tower was and they were daytime only (they did have a pre-sunrise authorization, if I recall) and their directional pattern was horrible; could not even receiver them in St. Pete Beach or north Tampa. They had to protect Cuba and WDBO 580 in Orlando. At the time I was traveling back and forth between St. Petersburg and Bradenton on a daily basis and there was an especially deep null to the south on the Misner Bridge just north of the main span of the Sunshine Skyway. (by this time, WCWR was history) This area (Misner Bridge) is and was in the St. Pete city limits and in that area, you could almost hear WFSO- 570 under Radio Reloj.
1340 was middle of the road at the time but was only 250 watts day and night, I'm not sure when they went to 1,000 watts day, but I was told that due to unnecessarily strict treaties with Cuba that they couldn't do the standard 1,000 watt daytime signal, with their tower then directly on the intercoastal waterway and the skip over the water to Cuba. This was also the reason was 570's null to the south at the time. You could pick up WFSO 570 in Citrus county on U.S. 19 better than in south St. Pete in those days...... and those were the days my friend. (we thought they'd never end

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drt