3.5MHz is used for transmission purposes by operators in the industry.
The telecoms regulator announced last week that the telecommunications operators using frequency will not have access to it by the end of the year.
The NCC’s Executive Vice-Chairman Dr. Eugene Juwah, said in Abuja that the operators would be moved to new frequencies in the 27.7MHz band as the microwave frequency band was being re-channelised in accordance with the recommendation of the International Telecommunications Union (ITU).
Dr Juwah said: “The commission, following consultations with the industry, has decided to re-channelise the 18GHz microwave frequency band from the original 3.5MHz plan to the 27.7MHz plan in accordance with the recommendation of the ITU (R F.59510).
“This new plan takes effect from January 1, 2015. From January 1, 2015, the 3.5MHz channel plan will no longer be accommodated. New assignments on the band shall, henceforth, be based on the 27.5MHz plan. Channel aggregation shall no longer be allowed.”