Yes. No law prevents you from provisioning and using your own hardware.
There absolutely are laws restricting what hardware you are allowed to use. e.g. https://www.fcc.gov/faqs-recent-updates-fcc-covered-list-reg...
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There absolutely are laws restricting what hardware you are allowed to use. e.g. https://www.fcc.gov/faqs-recent-updates-fcc-covered-list-reg...