According to tests by Florida-based Satellite Users Interference Reduction Group (SUIRG),
the radio frequencies WiMAX uses will interfere with satellite
communications in some of the very locations where it could bring the
most benefit.
The test results showe dthat WiMAX antennas can disrupt satellite
reception up to 20 kilometres away from a base station. The test, conducted in latte quarter of 2007,
conclusively demonstrated that WiMAX communications pose a significant
interference threat to satellite signals transmitted in the C-band
frequency.
The field test was performed with support from several key
industry organizations.