XIRIUM runs on the U-NII-1Band 5.15 - 5.25 GHz band. The XIRIUM system is able to transmit four audio channels within one frequency channel. In a Master-Slave Setup two frequency channels are used. There are 4 frequency-channels available:
| Channel-Nr. | Center frequency |
| Channel 36 | 5180 MHz |
| Channel 40 | 5200 MHz |
| Channel 44 | 5220 MHz |
| Channel 48 | 5240 MHz |
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