I simply won't support a company that steals, or is suspicious of stealing, tech from another company, then cutting prices b/c of the free hitchhike in tech they got from the technology theft. Yep, they are supposed to be competition to Motorola, they are supposed to be 'good', but its fairly clear that they had some shenanigans with Motorola, including stealing Motorola patents, which they were forced to remove by court, and (my personal opinion) most likely they stole Motorola technology too. While its certainly better in terms of front end filtering, these still use direct conversion stuff which suffers quite a bit when the RF space gets crowded. The cross-band repeat will also intermodulate with the third harmonic of the VHF side, which would guarantee it'd fail FCC testing but that feature would not even be allowed on a type-accepted radio in the first place. Filtering is rarely omitted entirely, but also rarely sufficient to exceed the 50-dB-under-carrier spec with enough margin to account for production variability. One of those tasks is more expensive than the other, so that critical step is often not to FCC spec on these classes of radios. Once RF comes out of that chip, it just needs to be filtered and amplified.

The majority of the transmitter circuitry and virtually all of the receiver circuitry is on a single IC whose performance is guaranteed (to a fairly low bar) across that range. I'd expect transmit quality to start to deviate from spec below 425 MHz or above 480 MHz, and only in transmit power level.

460 MHz is roughly in the middle of its bandsplit too, and 470 MHz is not far off compared to its transmitter's range. These usually end up as business radios in other parts of the world where FCC type acceptance isn't needed (look at all the DTMF signaling features), so they're usually designed for optimim performance in the 440-460 MHz range. We'd see at least some kind of transmitter certification in that case (Radioddity says it has an FCC ID of POD-ANG7, but that gies to a completely different radio). No, the specs aren't guaranteed anywhere. so chances are you have a subpar radio on GMRS. FYI, the specs on those ham radios are only guaranteed for the ham frequencies, not for out of band frequencies, such as GMRS.

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