The CCIR,
considering
a)that several frequency bands between 4 and 30 MHz are allocated on a shared basis to various radio senices including the mobile services;
b) that more efficient use of the radio-frequency spectrum can be realized through inter-service sharing;
c>that use of the radio-frequency spectrum must take into account the dimensions of frequency, time, and
space;
d) that dynamic real-time spectrum management techniques can facilitate inter-service sharing;
e)that the fixed and mobile services are currently using many of the same frequency bands between 4 and
30MHZ.
f )that sharing between the broadcasting, fixed and mobile services is limited by No. 503 of the Radio Regulations (RR) to the Tropical Zone in four frequency bands below 5 060 kHz;
g) that sharing between the fixed and broadcasting services is limited by RR No. 530 to three bands wherein the fixed service is limited to not more than 24 dBW power and communicates within the boundary of the country it is located in and on the condition that harmful interference is not caused to the broadcasting service;
h)that in order to prevent harmful interference to long distance radiocommunications in the bnnds between 5 MHz and 30 MHz, RR No. 955 encourages administrations to use any other possible means of communications;
j)that the requirements of the fixed, mobile, and broadcasting services are inherentiy different and have diverse technical and operational characteristics.