Goto Section: 80.874 | 80.876 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 80.875 VHF radiotelephone power supply.
(a) There must be readily available for use under normal load
conditions a power supply sufficient to simultaneously energize the VHF
transmitter at its required antenna power, and the VHF receiver. Under
this load condition the voltage of the source of energy at the power
input terminals of the VHF radiotelephone installation must not deviate
from its rated value by more than 10 percent on ships completed on or
after March 1, 1957, nor by more than 15 percent on ships completed
before that date.
(b) When the power supply for the VHF radiotelephone installation
consists of batteries, they must be installed in the upper part of the
ship, secured against shifting with motion of the ship, capable of
operating the installation for 6 hours, and accessible with not less
than 26 cm (10 in.) head room.
(c) Means must be provided for charging any rechargeable batteries used
in the ship's VHF radiotelephone installation. There must be provided a
device which, during charging of the batteries, will give a continuous
indication of the charging current.
(d) The VHF radiotelephone installation may be connected to the reserve
power supply of a compulsorily fitted radiotelephone or radiotelegraph
[ 51 FR 31213 , Sept. 2, 1986, as amended at 58 FR 44953 , Aug. 25, 1993]
Goto Section: 80.874 | 80.876
Goto Year: 2020 |
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