Sunrise scan

I got up an hour before sunrise this morning to do some MW DXing.  Conditions were relatively poor, but low powered 740 KVOR Colorado Springs was blasting in – unusual – and only heard one time before.  Otherwise, a dud as far as catching any South Pacific signals.  738 kHz Tahiti was only showing a faint carrier this morning, while faint audio could be heard a few mornings ago at sunrise.  The strong 1017.008 Tonga carrier that was present a few mornings ago was non-existent this morning.  A check of the tropical bands also showed poor signals in the 120...