Doesn’t the FCC have some rules about encryption on RF as well? I think you have to purchase the bandwidth to legally encrypt your transmission.
Discussion
Bummer. Is this to say that since a note contains an encrypted attestation/signature it cannot legally be transmitted over radio even though the note’s actual content is unencrypted plain text?
I am far from knowledgeable on FCC regulation, but cellular signals are RF and the frequency bands are sold by the government in auctions. There are only four companies who own actual bandwidth, they lease it to other carriers who resale service to consumers. Cellular RF emissions are encrypted, and this is allowed because they purchase exclusive rights. I suspect there is a gulf between regulation and enforcement, I think the point is to protect public frequencies from constant encrypted data stream broadcast, which would render the frequencies jammed within the affected area. Consistent broadcast at high power on public frequencies will cause complaints, and those complaints will result in enforcement action. There is a public government site that lists all FCC enforcement actions.