A read-only CwrFixedPointValue, in dBm, giving the highest transmit power the subscriber unit reached during the current operational hour, not a cumulative statistic. Because this covers a full hour rather than a single minute, it captures the worst-case, highest, power excursion the unit needed across a much longer observation window. For example, a p2mpSu1HrTxPowerMax that is noticeably higher than the previous several hours' values could indicate the link is having to work progressively harder to overcome a developing signal problem.