6/5 Other measures may also be implemented to reduce the burden of Priority of registration in the MIFR helps to establish international spectrum management that would otherwise fall on administrations. recognition of the right of a station to operate on the frequency For example, where a single radio user has need of a great deal of nationally assigned to it; see Section 26.2.4. spectrum, that user might be allotted a complete frequency band on condition that it is used efficiently. Administrations may also license 26.2.3 Limitation of cross-frontier interference stations or operators without undertaking to control interference. For example, the radio amateurs' societies are expected to discipline The use of the inspection method for identifying frequencies for the use of bands allocated to radio amateurs. assignment, laborious when interference from abroad can be disre- There are alternatives to this method and some of them are garded, becomes even more difficult when cross frontier inter- described in Sections 26.4 and 26.6. However, despite the difficul- ference must be considered. There are indeed circumstances when ties that are involved, the basic process of assigning for a new effective international consultation on frequency assignments is requirement a frequency that has been found to be suitable by virtually impossible, because the parties with whom consultation inspection of the national register of frequency assignments, aided might be necessary cannot be identified with certainty or are too where feasible by national spectrum planning as indicated above, is numerous. Such problems are made even more complex in many in very general use. frequency bands by the practice of allocating spectrum, not to one service, but to several; this is called frequency allocation sharing. 26.2.2 International registration of assignments Furthermore, many administrations reject the principle whereby the right to use a frequency may be based solely on priority of international registration of a national assignment. They