Coast Artillery Post Switchboard

Coast Artillery Post Switchboard

Battery519IDA
Kellogg Switchboard and Supply Co. switchboard The post switchboard room contained a Kellogg Switchboard and Supply Co. switchboard. It housed equipment lines which allowed connection throughout the Harbor Defense of the Delaware. The switchboard room was contained in a dug-in bomb-proof reinforced-concrete facility used to house the plotting and switchboard rooms and was located approximately 1/2 mile behind Battery 519. The main part of the structure was roofed with reinforced concrete, with a burster course and earth cover for overhead protection. The structure, concealed from aerial view by earth and vegetation also provided a gas-proof space, and its interior was sound-proofed with acoustic tile. The post switchboard was tied in to two separate systems, both working over the same cable net. The fire control telephone system, with manually operated switchboards, provided the tactical information and control necessary to utilize the batteries of the harbor defenses. The administrative system, using dial telephones, somewhat paralleled the fire control system, but was intended for the more routine communications, in both peace and wartime. The fire control post telephone system consisted of manually operated switchboards. Communications were distributed from these switchboards over the fire control cable net. This system was primarily used in fire control stations, guard stations, “non-ballistic” fire stations, and in the offices of the harbor defense headquarters. It was also used as an administrative system where dial facilities were not provided. Other Signal Corps equipment used in the plotting room's switchboard room included BD-74 and BD-75 switchboards, as well as one EE-86 time-interval apparatus. #Army #Artillery #Battery #Battery_519 #Bunker #Cantonment #Casemate #Coast_Artillery #FMHA #Fort #Fort_Miles #HDD #Kellogg_Switchboard #Military #Plotting_room #Switchboard #WW2 #WWII
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