2.2.3 Primary and secondary services

There are two classes of allocation shown in the following Table of Allocations. Where the status of the allocation is Primary, the service to which it applies is printed in upper case characters in columns 2 and 3. Where the status of the allocation is Secondary, the service is printed in lower case characters in columns 2 and 3. The formal definitions from the IRR are as follows:

5.24 1) Where a band is indicated as allocated to more than one service, either on a worldwide or Regional basis, such services are listed in the following order:
5.25 a) services the names of which are printed in “capitals” (example: FIXED) are called “primary” services;
5.26 b) services the names of which are printed in “normal characters” (example: Mobile) are called “secondary” services (see Nos. 5.28 to 5.31).
5.27 2) Additional remarks shall be printed in normal characters (example: MOBILE except aeronautical mobile).

5.28 3) Stations of a secondary service:
5.29 a) shall not cause harmful interference to stations of primary services to which frequencies are already assigned or to which frequencies may be assigned at a later date;
5.30 b) cannot claim protection from harmful interference from stations of a primary service to which frequencies are already assigned or may be assigned at a later date;
5.31 c) can claim protection, however, from harmful interference from stations of the same or other secondary service(s) to which frequencies may be assigned at a later date.

5.32 4) Where a band is indicated in a footnote of the Table as allocated to a service “on a secondary basis” in an area smaller than a Region, or in a particular country, this is a secondary service (see Nos. 5.28 to 5.31).
5.33 5) Where a band is indicated in a footnote of the Table as allocated to a service “on a primary basis”, in an area smaller than a Region, or in a particular country, this is a primary service only in that area or country.