A quick web search comes up with
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which makes the following claims:
Q: Does the owner of this equipment (installed location) require an FCC license to operate the repeater?
A: No, neither the user nor the installer needs an FCC license. All of our products are FCC approved. In the instruction manual, you will find guidelines to follow to comply with all FCC requirements, such as proper separation between antennas, and persons must be 6 meters horizontally away from outside antenna.
Maybe worth a try.
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