| 11. | A steam fog signal was also installed . which was thereafter replaced by a diaphone.
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| 12. | There was also a two-tone diaphone fog horn and living quarters for several families.
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| 13. | The building originally had a diaphone fog signal structure attached, and it was later removed.
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| 14. | There is a diaphone in place.
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| 15. | A diaphone fog horn is attached.
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| 16. | This arrangement was found unsatisfactory, and a diaphone was added sometime between 1926 and 1931.
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| 17. | The original steam whistle fog signal was replaced with diaphone foghorns in the mid-1920s.
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| 18. | It originally had a Type F Diaphone signal, and a FA-232 is now in operation.
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| 19. | As a matter of interest it is noted the diaphone has never been inoperative since installation in 1926.
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| 20. | The fog signal was upgraded to a diaphone in 1919; the following year the beacon was electrified.
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