Sec. 80.813 Installation of automatic-alarm-signal keying device.
(a) The automatic radiotelegraph alarm signal keyer must be
installed in the radiotelegraph operating room. It must be possible to
key, nonsimultaneously, the main transmitter and the reserve
transmitter, and to permit the device to be taken out of operation at
any time in order to permit immediate manual transmitter operation. Only
one control must be provided for each automatic alarm signal keying
device. This control must be located in the radiotelegraph operating
room.
(b) The required automatic radiotelegraph alarm signal keying device
must be capable of operating efficiently for a continuous period of 1
hour when energized solely by the reserve power supply.
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