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==Conversion from semi-automatic to automatic== | ==Conversion from semi-automatic to automatic== | ||
The | The signal was converted from semi-automatic to automatic when [[Hay Lane Ground Frame]] was recovered in January 1974. | ||
[[File: 1974-01.png | border]] | [[File: 1974-01.png | border]] |
Revision as of 13:51, 9 November 2014
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Conversion from semi-automatic to automatic
The signal was converted from semi-automatic to automatic when Hay Lane Ground Frame was recovered in January 1974.