An auxiliary receiving antenna must be provided when necessary to avoid unauthorized interruption or reduced efficiency of the required watch because the normal receiving antenna is not available because a radio direction finder on board the vessel is operated.
[51 FR 31213, Sept. 2, 1986. Redesignated at 68 FR 46973, Aug. 7, 2003]
source: 51 FR 31213, Sept. 2, 1986, unless otherwise noted.
cite as: 47 CFR 80.290