This Galaxy Audio AS - 1100 wireless IEM system operates in the 584 - 607 MHz range. Note that it doesn't come with a power supply, antennas, or screws for mounting the bracket to the transmitter. Also, the knob cap on the bodypack is missing.

To use this Galaxy Audio AS - 1100 wireless IEM system, first, you'll need to get your own power supply as it's not included. Then, find suitable antennas and screws for mounting the bracket to the transmitter. Since the knob cap on the bodypack is missing, handle it with care to avoid any further damage. When not in use, store it in a dry and cool place. Regularly check the connections to ensure a stable signal. That's it, enjoy using your wireless IEM system!