In 1935, the WWJ transmitting tower was moved to 8 Mile Rd. and Meyers Rd., North Northwest of Detroit. They went to 5000 watts Day and 1000 watts Night on 920 kHz, nondirectional, and around 1936, they went to 5000 watts Night nondirectional STA, renewed monthly, to overcome interference. The tower was 180 degrees electrical height at 920 kHz.
It appears that WWJ with 5000 watts DA, with 1000 watt equivalent nulls toward WPEN and KPRC from 8 Mile Rd., were such a problem after 1941 and moving to 950 kHz, that after being allowed 5 kW nondirectional at Night on special authorization between 1935 and 1941 on 920 kHz, renewed monthly, the signal was weak enough to the South with the DA that they applied to move to River Rouge, near Coolidge Hwy. and Goodell St., South Southwest of Detroit, in 1946. From the standpoint of a Night site, it would have been good at the time. I don't know when the FCC started allowing two site operations, but the 8 Mile Day site with 5 kW nondirectional and a 186 degree tower at 950 was unbeatable by 1950, when population began migrating toward further out areas of Oakland and Macomb Counties. From River Rouge, the nulls toward WPEN and KPRC at Night wouldn't have mattered nearly as much. And the population in Oakland and Macomb Counties was quite close in until then. They never moved though. Perhaps WPEN and KPRC changed their patterns to protect WWJ better.
WWJ FCC History Card-Takes A Long Time To Load- ~100 years of History
http://licensing.fcc.gov/cgi-bin/prod/c ... r_id=68876
It appears that WWJ with 5000 watts DA, with 1000 watt equivalent nulls toward WPEN and KPRC from 8 Mile Rd., were such a problem after 1941 and moving to 950 kHz, that after being allowed 5 kW nondirectional at Night on special authorization between 1935 and 1941 on 920 kHz, renewed monthly, the signal was weak enough to the South with the DA that they applied to move to River Rouge, near Coolidge Hwy. and Goodell St., South Southwest of Detroit, in 1946. From the standpoint of a Night site, it would have been good at the time. I don't know when the FCC started allowing two site operations, but the 8 Mile Day site with 5 kW nondirectional and a 186 degree tower at 950 was unbeatable by 1950, when population began migrating toward further out areas of Oakland and Macomb Counties. From River Rouge, the nulls toward WPEN and KPRC at Night wouldn't have mattered nearly as much. And the population in Oakland and Macomb Counties was quite close in until then. They never moved though. Perhaps WPEN and KPRC changed their patterns to protect WWJ better.
WWJ FCC History Card-Takes A Long Time To Load- ~100 years of History
http://licensing.fcc.gov/cgi-bin/prod/c ... r_id=68876
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