Overall, I concur. This law dates back to when cellular phones used analog emissions. It no longer makes any sense. Maybe they'll remove it in the near future.
www.ecfr.gov
that has become vestigial at best (since mobile phones don't operate in those bands anymore, as a rule - nearly everything is GSM now, and I think even CDMA has moved up from the 800MHz band.)
Mobile telephone does still use this band. That Part 22 spectrum is far too valuable to be abandoned.
But it's the equivalent of running a signal cable through my living room and telling me I don't get to know what's going over it - yes, I'm going to find a way to tap it, if you're going to invade my space with it.
Here's the section from 15.121 that addresses that:
Scanning receivers and frequency converters designed or marketed for use with scanning receivers, are not subject to the requirements of
paragraphs (a) and
(b) of this section provided that they are manufactured exclusively for, and marketed exclusively to, entities described in
18 U.S.C. 2512(2),
or are marketed exclusively as test equipment pursuant to
§ 15.3(dd).
15.3 sez:
Test equipment is defined as equipment that is intended primarily for purposes of performing measurements or scientific investigations. Such equipment includes, but is not limited to, field strength meters, spectrum analyzers, and modulation monitors.
So, get yourself an SDR as a piece of "test equipment" and knock yourself out.
I've got receivers that cover this spectrum, as well as a spectrum analyzer that covers everything from damn near 0KHz all the way up to 7GHz, not to mention a service monitor that covers this (it'll even transmit there). It's fun to scan through, but not fun to listen to.
No consumer scanner is going be able to do anything with the signals used on this band, other than let you listen to a annoying buzzing sound. And since LTE is encrypted, you won't be able to decode any of the traffic. Even if you could, trying to sniff packets to form any listenable radio traffic would be very difficult with the sheer amount of data.
Not to mention that all you'd get would be whatever traffic was on whichever sector of the cell site you were sitting in.
And, yeah, encrypted….
Old TVs are getting harder to find these days (those signal bands were originally carved out of the high UHF bands on broadcast television - I could tell you which channels, if I had my notes handy.)
Channel 70 - 83 were removed from the broadcast service in 1983 and assigned to other services. 52-69 were pulled later and became Band 14, used by FirstNet, and some other parts of that spectrum was used by other cellular carriers.