Okay, I'll be that guy: what he's talking about doing is in no way shape or form legal or right. FRS and GMRS radios must be type certified, as you've alluded to. The TYT-TH9800 is absolutely not Part 95 certified.
Here's the radio's certification on the FCC website. It is only Part 15B certified (technically not a type certification, since ham equipment doesn't have to be... Nearly every electronics device sold inside the United States radiates unintentional emissions, and must be reviewed to comply with Part 15 before it can be advertised or sold in the US market). There are exactly 0 ham radios that are type certified for FRS because the type requires a non-removable antenna. While FRS is available to anyone, the GMRS license is restricted to immediate family, not some rando in your group.
I'm not gonna soap box too much here, but this is the kind of arrogant, "I know what I'm doing, so it's okay," thinking creates the kind of confusion and slippery slope I absolutely can't stand. Yes, many of the new, cheap, Chinese radios like TYT, Baofeng and others
can transmit on frequencies for services they aren't supposed to use. That doesn't make it okay. Not to mention crossbanding FRS to ham bands and visa-versa. That's just wrong on so many levels.
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No worries, I expected a bit of a tongue lashing here as it is more than fair. Just as a note, I am very careful about what I do communication wise and do my level best to meet the intent of the FCC regulations while not always following them to the letter. Have you ever exceeded the speed limit? If so, your "moral high ground" is crumbling. The highway speed limits are laws in the same way that FCC regulations are laws. The FCC authorizes non licensed transmission in case of emergency--I have the capabilities that I have so that I have a tested, proven method to communicate if needed. I'd hate to be trying to modify my radio while an emergency situation is unfolding... That said, I do not make a regular practice of transmitting on bands that I am not supposed to--the cardinal rule for radio operation is to cause no interference to other users--I strictly abide by that rule.
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Now, the ability to communicate with CB, FRS, or GMRS radios is something I find quite useful but like anything else, has to be carefully evaluated. For instance, having solid communication going through a technical section of a trail has saved many lives--if there is a viable option to accomplish this with a group of people with mixed radio capabilities, I see that as something that I SHOULD do. On the other hand, we were at Uwharrie a couple months ago and there were CBs and Hams in the group. I chose to manually relay communication in the group as CBs don't have PL tones to keep out unwanted traffic and there are enough random transmissions out there that I would have almost certainly retransmitted a signal that came from outside our group. As far as linking CBs and FRS/GMRS transmissions to the HAM bands, I reference the below FCC rules on third party traffic:
§ 97.115 Third party communications.
(a) An amateur station may transmit messages for a third party to:
(1) Any station within the jurisdiction of the United States.
(2) Any station within the jurisdiction of any foreign government when transmitting emergency or disaster relief communications and any station within the jurisdiction of any foreign government whose administration has made arrangements with the United States to allow amateur stations to be used for transmitting international communications on behalf of third parties. No station shall transmit messages for a third party to any station within the jurisdiction of any foreign government whose administration has not made such an arrangement. This prohibition does not apply to a message for any third party who is eligible to be a control operator of the station.
(b) The third party may participate in stating the message where:
(1) The control operator is present at the control point and is continuously monitoring and supervising the third party's participation; and
(2) The third party is not a prior amateur service licensee whose license was revoked or not renewed after hearing and re-licensing has not taken place; suspended for less than the balance of the license term and the suspension is still in effect; suspended for the balance of the license term and re-licensing has not taken place; or surrendered for cancellation following notice of revocation, suspension or monetary forfeiture proceedings. The third party may not be the subject of a cease and desist order which relates to amateur service operation and which is still in effect.
(c) No station may transmit third party communications while being automatically controlled except a station transmitting a RTTY or data emission.
(d) At the end of an exchange of international third party communications, the station must also transmit in the station identification procedure the call sign of the station with which a third party message was exchanged.
[54 FR 25857, June 20, 1989; 54 FR 39535, Sept. 27, 1989, as amended at 71 FR 25982, May 3, 2006; 71 FR 66462, Nov. 15, 2006]
In this case, I am the control operator with direct control over the radio doing the transmitting and the cb/FRS/GMRS operator is the third party who is "participating in stating their message"
So then, yes, I bend the rules a bit when it makes sense and am prepared to rip them up completely if the need arises, but I don't blatantly thumb my nose at the regulations. I will admit to the following violation if you'd like to report me to the FCC--My kids play with the FRS radios and have free run of the neighborhood--when I need them to come home, I'll send a brief transmission on the FRS channel at 5 watts from my ham radio as the FRS can't reach the other side of the lake where the playground is.
Cheers!
Dan