On Wed, 21 Nov 2018 20:20:03 -0600, "Albert Hodge"
wrote:


I've never heard or read anything about needing a permit or license to operate a booster.

It's not that simple. In the US, the FCC must "type accept" things
that transmit to make sure they use the correct frequencies and do not
interfere with other services. If a device is type accepted for
unlicensed use, the end user does not need a license. Routers with
wi-fi fall into this category. However, lots of chinese stuff sold
over the Internet skipped the approval step. They may or may not use
the proper frequencies and may or may not interfere with legal
devices. Some even cheat and place a sticker claiming FCC approval.
Buyer beware.