• International frequency allocations extracted from the latest ITU RR Article 5 directly. These columns are given just for information and comparison with national counterpart according to the ITU’s division of the world into three regions (Oman is in region 1).
• National allocation table,
• Allowed or expected use of spectrum bands by different type of applications/radio-technologies, reference regulations and documents.

• allocated frequency bands identified with two edge frequencies
• allowed radiocommunication services under each band along with their priority. Based on their initial priority in the table of ITU RR Article 5 and recognized national interests, the priority of services could be primary or secondary. Different rights have been granted to different categories of priorities.
• International and national footnotes have been extracted form ITU RR Article 5 have a prefix “5.” and those which are national have a prefix “OM”

Frequency assignments for stations of military/security applications are often subject to change without prior coordination, especially at the time of tactical exercises, state of emergency or for security purposes. Clearly, protection of stations in civil applications, in such events, from unpredictable harmful interference initiated by stations of military/security applications is a complicated task or almost impossible. To avoid unnecessary spectrum management complexity, in practice, TRA allocates necessary sub-bands for such purposes that can be used by military bodies for tactical exercise. Stations in these bands or sub-bands have to be operated in compliance with national allocation table. Moreover, by experience gained from different administrations worldwide, classification of frequency bands only into two different governmental and non-governmental user communities at the first revision of national frequency allocation table, results in an inefficient utilization of spectrum. Therefore, the national table suggests to allocate some bands on a sharing basis. Consequently, for Oman National table of frequency allocation, there are three categories of bands or sub-bands:

• exclusive military band;
• exclusive civil bands, and
• military and civil bands on a shared basis (shared bands)

Table 1

Utilization-assignment table

Column 2 (from left), Utilization of allocated bands/sub-bands

Users, and primarily spectrum management authority, could find complementary recommended guidelines, methods or techniques for channeling arrangement, compatible with ITU RR and other well-known standardization organizations. Availability of such information allows avoiding abundantly harmful interferences and unnecessary diversification of applications. Designation of bands as exclusive military and exclusive civil bands is based on results of detailed spectrum investigation, which has being conducted during last decade in Europe and on protocols of joint meeting of Europe civil and military spectrum managers.

Table 2