| 21. | The diaphones rise more than 30 feet from the floor of the chamber and are painted in bright colors.
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| 22. | When this was a working diaphone, it sounded every 20 seconds for as long as it was foggy.
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| 23. | As long ago as the early 1970s, the diaphones, solo division, and orchestral oboe were removed.
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| 24. | In the 1950s, the lighthouse station was electrified and the fog signal was replaced with a powerful Diaphone.
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| 25. | The Coast Guard replaced the diaphone horns with an electronic fog horn in 1983 that sounded from the light tower.
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| 26. | The thunderous 32 & prime; Diaphone was less successful, but made an impression on audiences of the era.
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| 27. | That was removed in 1925, and " a much improved air-operated diaphone fog signal " was accomplished.
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| 28. | In 1995 when the lighthouse was automated an electric fog signal ( ELG 300-04 ) replaced the diaphone.
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| 29. | This particular set of diaphones was built for the Portland Liberty Theater and is one of only 10 of its type manufactured.
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| 30. | Because of growing keeper house was accompanied by a fog signal building that housed a diaphone, that has since been removed.
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