Interesting! I reviewed my modem logs for the past 30 days, and I can confirm that I've ONLY seen a power level higher than 52dB on upstream channels using QAM16 modulation. Those using QAM64 appear to top out at about 51dB for me. So thanks for pointing me to that information -- I appreciate being corrected and learning something! (Looks like the DSLR/BBR FAQ should be updated to reflect this too, at least as far as when bonding on DS3.0 is in use).
The bug/issue andyross
was experiencing in that thread looks like it should be fixed in 1.0.6.8 (2nd bulletpoint of section 8.1.2 of the release notes posted by DocDrew
); meaning the modem shouldn't continually reboot in that situation any longer.