J. Kissel After the h1calex (which includes PCALX, but was restarted for the purposes of NCALX) restarts on Oct 29th -- see LHO aLOG 52768 -- the safe.snap restored the PCALX high frequency roaming line frequency to 1234.0 Hz -- an old start-up value. Normally, during the run, the HIGH_FREQ_LINES guardian manages this frequency comparing observation ready segments against the amount of time it's been at any given frequency. Because we haven't had any observation ready segments since the model reboot, then the frequency was not restored. I've run "INIT" on the HIGH_FREQ_LINES guardian, such that we resume observation with a standard start frequency of 4001.3 Hz. I've also updated the OBSERVE and SAFE.snap files to have 4001.3 Hz as the start frequency instead of 1234.0 Hz, such that upon reboot of the model in the future, it'll come back with the standard excitation start frequency.