There are an increasing number of station history cards on CDBS. They are most likely older stations, but that could be as late as the 1950s.
There is not a lot of technical information on them, but every once in a while there is something technical mentioned.
One was a PSA authorization from 1968 sent by telegram for a station that operated with 5000 watts daytime, 1000 watts nighttime, with the same pattern, even though this was originally considered DA-2. The authorized power was for 4100 watts.
Does anyone know the rules regarding these? That is the first time I had heard of a PSA authorized for more than 500 watts.
The way I was told by the late Charles Gustafson (WIND, WCFL, WTAQ, WKMI, WKZO, WJFM, WJEF, WWTV-FM), a station could originally sign on at 4:00 AM with full daytime facilities, if there were no interference complaints. Later that was changed to 6:00 AM.
It would seem like if there were complaints with 5000 watts and the power was recalculated as 4100, that the station could have easily have been 5000 watts nighttime. Because there were no power levels between 1000 and 5000 watts at the time, many stations were continuing to operate with 1000 watts night with the same pattern as day, when they could have had much more. They could have used 4100 watts and called it 5000 with an SLR if they could reach minimum RMS pattern levels for 5000 watts with 4100. This was often the case with three and four tower inline arrays.
There is not a lot of technical information on them, but every once in a while there is something technical mentioned.
One was a PSA authorization from 1968 sent by telegram for a station that operated with 5000 watts daytime, 1000 watts nighttime, with the same pattern, even though this was originally considered DA-2. The authorized power was for 4100 watts.
Does anyone know the rules regarding these? That is the first time I had heard of a PSA authorized for more than 500 watts.
The way I was told by the late Charles Gustafson (WIND, WCFL, WTAQ, WKMI, WKZO, WJFM, WJEF, WWTV-FM), a station could originally sign on at 4:00 AM with full daytime facilities, if there were no interference complaints. Later that was changed to 6:00 AM.
It would seem like if there were complaints with 5000 watts and the power was recalculated as 4100, that the station could have easily have been 5000 watts nighttime. Because there were no power levels between 1000 and 5000 watts at the time, many stations were continuing to operate with 1000 watts night with the same pattern as day, when they could have had much more. They could have used 4100 watts and called it 5000 with an SLR if they could reach minimum RMS pattern levels for 5000 watts with 4100. This was often the case with three and four tower inline arrays.
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