I love Waterfall Displays. I can now see that 167.2125, 167.3375, and167.4875 pop up/go down at the same time. 167.3375 leads/lags by a little bit (very little). all three appear to be repeater outputs (steady power level), but x.3375 a lower level. I now see that 168.8750 is tied into this "system". I am seeing/hearing what sounds like an open carrier when the other 3 are active (all 4 active at same time). No NAC on x.8750. NAC 293 on the original 3. Still haven't found the input.