Irans Arabic-language news channel, al-Alam, has been jammed on the Nilesat, recent reports say.
Press TV has learned that al-Alams signal on Nilesat has been interrupted over the past few days.
The main source of the jamming signals has not been identified. However, some sources say the jamming operations are being carried out from areas inside Syria near Turkish border which are reportedly controlled by foreign-backed militants.
This is not the first time the signals of Iranian channels have been interrupted.
On December 21, Hispasat took Iran's Press TV and Hispan TV off the air, and ordered Overon, a subsidiary satellite company, to stop the transmission of the two international TV channels.
Overon said the ban on Press TV and Hispan TV followed a similar move by France's Eutelsat Company, which had already taken several Iranian satellite channels and radio stations off the air. It said the channels were removed because of a wider interpretation of EU regulations.
In November, the Hong Kong-based Asia Satellite Telecommunications Co. Ltd. (AsiaSat) also took Iranian channels off the air in East Asia.
In October, Eutelsat SA and Intelsat SA stopped the broadcast of several Iranian satellite channels, citing pressure by the European Union.
The EU has, however, denied the claims by the European satellite companies.