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I think this thread has run its course.

First of all, repeaters are neither allowed nor possible on FRS. There is no provision for repeater inputs in a separate band segment. There might be operators in other radio services using FRS as an input to a cross-band repeater. But, that is distinctly and strictly prohibited by the rules. As to ham operators who do not have GMRS licenses. If they are talking on the GMRS frequencies, they are doing so illegaly. Otherwise, there is nothing compelling a ham operator to have a GMRS license. And, yes, there are no doubt hams operating on GMRS using ham equipment. However, they typically do not go around announcing that is what they are doing, and they certainly do not claim that they have some special need or right to do so. But, regardless of examples of others who might be flouting the rules, their indiscretions do not in any way change the licensing requirements you agreed to to get your GMRS license. And, to be blunt. If someone is unwilling or incapable, regardless of age or other reason, of correctly operating under your GMRS license. Then you, as the license holder are responsible and you must prevent them from using the station. If your grand children cannot comply with the rules, they cannot use a radio operating under the GMRS rules. Period. By and large, the people on this forum support the GMRS service and want to see it remain useful and relevant. Arguing publicly that the rules do not apply to this or that special case is counter to those ends. If you still think you know better, or that your needs are special, or whatever, then go ahead and do whatever you want. Nobody will ever know anyway. But, please do not claim that your special needs come first and expect others to support you. And, please have a little more faith is your grand-children and children in general. They learn quickly and like to do things right.

Here is a little review. Since I got the Nano VNA f I decided to test an antenna that I have had for a while. I had bought 2 for a road trip. Btech sells them for $29. They are a lot cheaper then buying a magnet NMO and nmo antenna. I have been happy with the 2m (144mhz) performance, It has ok performance with GMRS and I feel it has been meh with 70cm (444mhz) performance. So I wanted to see what the numbers were like as far as SWR. I have been mostly using it for repeater usage on 2M and GMRS. No luck on 2m simplex, FRS/GMRS works well for simplex when in range. Furthest GMRS repeater has been to Alexandria give or take 11 miles from the truck. The same antenna, is being tested on a cookie backing pan in my dining room connected to an FT991a. I have managed to connect to 2m Frederick MD repeaters which are 27+ miles away on 5 watts. Still can't make a simplex call 5 miles with the same setup running 30 watts. The stats from BTech 's website: https://baofengtech.com/NAGOYA-UT-72 Frequency Range: 136-174MHz, 400-520MHz; Optimal Frequency Range: 140-170MHz, 420-470MHzWave: 1/4λ (144MHz) - 5/8λ (430MHz)Gain: 3.5dBiMax power: 80 WattsVSWR : Less 1.5:1Impedance: 50 OHMConnector: SMA-F & PL-259Length: 20 inches So the VNA is showing the following. 144.562 National 2m SWR 2.53 :1 144.000 MHz SWR 2.89:1 147.999 MHz SWR 2.21:1 159.300-163.500 lowest SWR of 1.18:1 420.000 SWR 1.92:1 450.000 SWR 1.33:1 444.900-445.800 lowest of SWR of 1.3:1 FRS/GMRS Frequencies 462.5625 SWR 1.35:1 467.7250 SWR 1.40 SWR was 1.35-1.38:1 for most of the FRS/GMRS band. Lowest actually was at 1.27:1 at 464.575 - 465.763 MHZ well outside of Amateur radio and FRS/GMRS service allocations.

You are free do do as you please. But what you cannot do is change the rules of the radio service (GMRS) you operate under. A condition of your license, that you agreed to, is to follow the rules. Part 95E § 95.1705 ( Individual licensee responsibility. The holder of an individual license to operate GMRS stations is responsible at all times for the proper operation of the stations in compliance with all applicable rules in this part. and (d) Individual licensee duties. The holder of an individual license: (1) Shall determine specifically which individuals, including family members, are allowed to operate (i.e., exercise operational control over) its GMRS station(s) (see paragraph © of this section); It is no different than operating non-GMRS certified equipment. People are free to do as they please. But, it is not ok to tell others that is an Ok thing to do. And, by the way, why not teach your grand-children about proper radio use? They might not only find it interesting, but they might also take the use of the radios more seriously, and even develop their own interest.