This radio has a commercial mode but no where that I can find does it describe which commercial license. Looking at the tag under the battery...

FCC ID T4KD887UV https://fccid.io/T4KD878UV ...so part 22 and part 90?

Part 90 is Commercial, public safety and Government, but what is Part 22 exactly? Trying to figure this out is like looking for a sentence in War and Peace.

  • $\begingroup$ Part 90 is Private Land Mobile Services (not Amateur Radio, which is Part 97). That is, police, fire, taxi, tow trucks, railroads, etc. $\endgroup$
    – WA9ZZZ
    Jan 20, 2021 at 0:43
  • $\begingroup$ Uh... then this ISN'T a Ham HT ?! OH! Wait. The part 97 license won't be in the radio because I'm the one with the part 97 license, not the radio. $\endgroup$ Jan 24, 2021 at 2:56

1 Answer 1


If you click on "22" in the web page you linked to, you're taken to this page, which reveals that Part 22 is CFR › Title 47 › Volume 2 › Chapter I › Subchapter B › Part 22 - Public Mobile Services.

So I think the answer that you were looking for is that Part 22 is Public Mobile Services. I was surprised to see that Wikipedia doesn't have an article about Public Mobile Services. 47 CFR § 22.99 defines Public Mobile Services as, "Radio services in which licensees are authorized to offer and provide mobile and related fixed radio telecommunication services for hire to the public."

  • 2
    $\begingroup$ Cell phones being probably the most well known Public Mobile Service, but also covers paging and a few other services. $\endgroup$
    – WA9ZZZ
    Jan 20, 2021 at 0:58
  • $\begingroup$ Any ideas what that is about? Maybe the GPS? $\endgroup$ Jan 24, 2021 at 2:58
  • 1
    $\begingroup$ Nobody is allowed to transmit on GPS except the govt. $\endgroup$
    – user10489
    Jan 26, 2021 at 5:31
  • $\begingroup$ If you're asking why Part 22 rather than Part 90, I have no idea. It has nothing to do with the GPS because the radio doesn't transmit on the GPS band, and FCC type certification isn't required for receivers. $\endgroup$
    – rclocher3
    Jan 26, 2021 at 16:10

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