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It always feels funny to me to refer to the ISM bands (the spectrum itself) as "unlicensed". - Devices operating there have to be approved - There are rules a
by codys 11y ago
It always feels funny to me to refer to the ISM bands (the spectrum itself) as "unlicensed".
- Devices operating there have to be approved
- There are rules about how the devices work
- There are rules about how the _operator_ is allowed to operate the approved devices ("Operation is subject to the following conditions" sticker on most equipment).
(all of this under FCC part 15 rules)
- yuubi 11y agoIn other bands, the operator in control of the transmitter generally needs to file paperwork with the FCC to get a license (in some systems like cellphones, the base station is in control so the subscribers don't need licenses, just approved equipment).