SIEMENS BROTHERS No. F1061 - F1069 | |||||||
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INTERCOMMUNICATION
TELEPHONES (Wall Pattern)
F1067 F1061 to F1069 These instruments are arranged to operate with a common ringing battery, a dry cell being installed in the transmitter circuit of each instrument for speaking purposes. By means of this arrangement, and using the metallic circuit type telephone cable throughout the installation, immunity from cross-talk is secured. The press button line-selectors are so arranged that after removal of the hand-Microtelephone from the cradle switch, any number of press buttons may be depressed simultaneously, permitting a general call to be sent to the stations selected; thus directions may be given to a number of persons at the same time. All selectors are replaced automatically when the hand-micro-telephone is returned to the rest. F1061 - 4 lines Taken from the Siemens Brothers Catalogue "Telephones and Telephone Switchboards for private installation" 1913
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Last revised: October 19, 2025 FM2 |