comdtinst m2400.1f - US Coast Guard Response Boat-Medium

D. International Frequency Management Procedures.
1. IFRB. National frequency assignments that could cause
harmful interference to foreign administrations must be
registered with the International Frequency Registration
Board (IFRB) of the ITU. The Commandant (G-TTM) determines
which assignments meet the criterion for international
registration and submits notifications to the IFRB. The
IFRB examines each notification to determine if the proposed
assignment is in compliance with the ITU Radio Regulations
and if its use will cause harmful interference to other
assignments previously registered in the Master International
Frequency Register (MIFR). Approved notifications are
entered into the MIFR and have international status.
Notifications that are not in compliance with the Radio
Regulations or it is determined that they will cause
harmful interference to previously registered assignments are
returned for additional coordination by the submitting
administration.
2. International Assignments. Frequency assignments obtained
thru the JFP for stations outside the U.S. are registered with
the IFRB by the host country or, in some instances, by the
U.S. on behalf of the host country.